Articles | Volume 21, issue 23
https://doi.org/10.5194/bg-21-5407-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-5407-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Dec 2024
Research article |
| 06 Dec 2024
| 06 Dec 2024
Characterizing regional oceanography and bottom environmental conditions at two contrasting sponge grounds on the northern Labrador Shelf
Evert de Froe
CORRESPONDING AUTHOR
Department of Ocean Systems, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, the Netherlands
Centre for Fisheries Ecosystems Research, Fisheries and Marine Institute of Memorial University of Newfoundland and Labrador, St. John's, NL A1C 5R3, Canada
Wageningen Marine Research, Wageningen University and Research, PO Box 77, 4400 AB Yerseke, the Netherlands
Igor Yashayaev
Department of Fisheries and Oceans, Bedford Institute of Oceanography, PO Box 1006, Dartmouth, NS B2Y 4A2, Canada
Christian Mohn
Department of Ecoscience, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
Johanne Vad
Changing Oceans Research Group, School of GeoSciences, The University of Edinburgh, Edinburgh, EH9 3FE, UK
Furu Mienis
Department of Ocean Systems, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, the Netherlands
Gerard Duineveld
Department of Ocean Systems, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, the Netherlands
Ellen Kenchington
Department of Fisheries and Oceans, Bedford Institute of Oceanography, PO Box 1006, Dartmouth, NS B2Y 4A2, Canada
Erica Head
Department of Fisheries and Oceans, Bedford Institute of Oceanography, PO Box 1006, Dartmouth, NS B2Y 4A2, Canada
Steve W. Ross
Center for Marine Science, University of North Carolina at Wilmington, 5600 Marvin Moss Ln., Wilmington, NC 28409, USA
Sabena Blackbird
School of Environmental Sciences, University of Liverpool, 4 Brownlow Street, Liverpool, L69 3GP, UK
George A. Wolff
School of Environmental Sciences, University of Liverpool, 4 Brownlow Street, Liverpool, L69 3GP, UK
J. Murray Roberts
Changing Oceans Research Group, School of GeoSciences, The University of Edinburgh, Edinburgh, EH9 3FE, UK
Barry MacDonald
Department of Fisheries and Oceans, Bedford Institute of Oceanography, PO Box 1006, Dartmouth, NS B2Y 4A2, Canada
Graham Tulloch
Lyell Centre, British Geological Survey, Research Avenue South, Edinburgh, EH14 4AP, UK
Dick van Oevelen
Department of Estuarine and Delta Systems, NIOZ Royal Netherlands Institute for Sea Research, PO Box 140, 4400 AC Yerseke, the Netherlands
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Vesna Bertoncelj, Furu Mienis, Paolo Stocchi, and Erik van Sebille
EGUsphere, https://doi.org/10.5194/egusphere-2024-3112, https://doi.org/10.5194/egusphere-2024-3112, 2024
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This study explores ocean currents around Curaçao and how land-derived substances like pollutants and nutrients travel in the water. Most substances move northwest, following the main current, but at times, ocean eddies spread them in other directions. This movement may link polluted areas to pristine coral reefs, impacting marine ecosystems. Understanding these patterns helps inform conservation and pollution management around Curaçao.
Anna-Selma van der Kaaden, Dick van Oevelen, Christian Mohn, Karline Soetaert, Max Rietkerk, Johan van de Koppel, and Theo Gerkema
Ocean Sci., 20, 569–587, https://doi.org/10.5194/os-20-569-2024, https://doi.org/10.5194/os-20-569-2024, 2024
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Cold-water corals (CWCs) and tidal waves in the interior of the ocean have been connected in case studies. We demonstrate this connection globally using hydrodynamic simulations and a CWC database. Internal-tide generation shows a similar depth pattern with slope steepness and latitude as CWCs. Our results suggest that internal-tide generation can be a useful predictor of CWC habitat and that current CWC habitats might change following climate-change-related shoaling of internal-tide generation.
Anna-Selma van der Kaaden, Sandra R. Maier, Siluo Chen, Laurence H. De Clippele, Evert de Froe, Theo Gerkema, Johan van de Koppel, Furu Mienis, Christian Mohn, Max Rietkerk, Karline Soetaert, and Dick van Oevelen
Biogeosciences, 21, 973–992, https://doi.org/10.5194/bg-21-973-2024, https://doi.org/10.5194/bg-21-973-2024, 2024
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Combining hydrodynamic simulations and annotated videos, we separated which hydrodynamic variables that determine reef cover are engineered by cold-water corals and which are not. Around coral mounds, hydrodynamic zones seem to create a typical reef zonation, restricting corals from moving deeper (the expected response to climate warming). But non-engineered downward velocities in winter (e.g. deep winter mixing) seem more important for coral reef growth than coral engineering.
Alan D. Fox, Patricia Handmann, Christina Schmidt, Neil Fraser, Siren Rühs, Alejandra Sanchez-Franks, Torge Martin, Marilena Oltmanns, Clare Johnson, Willi Rath, N. Penny Holliday, Arne Biastoch, Stuart A. Cunningham, and Igor Yashayaev
Ocean Sci., 18, 1507–1533, https://doi.org/10.5194/os-18-1507-2022, https://doi.org/10.5194/os-18-1507-2022, 2022
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Observations of the eastern subpolar North Atlantic in the 2010s show exceptional freshening and cooling of the upper ocean, peaking in 2016 with the lowest salinities recorded for 120 years. Using results from a high-resolution ocean model, supported by observations, we propose that the leading cause is reduced surface cooling over the preceding decade in the Labrador Sea, leading to increased outflow of less dense water and so to freshening and cooling of the eastern subpolar North Atlantic.
Gilles Reverdin, Claire Waelbroeck, Catherine Pierre, Camille Akhoudas, Giovanni Aloisi, Marion Benetti, Bernard Bourlès, Magnus Danielsen, Jérôme Demange, Denis Diverrès, Jean-Claude Gascard, Marie-Noëlle Houssais, Hervé Le Goff, Pascale Lherminier, Claire Lo Monaco, Herlé Mercier, Nicolas Metzl, Simon Morisset, Aïcha Naamar, Thierry Reynaud, Jean-Baptiste Sallée, Virginie Thierry, Susan E. Hartman, Edward W. Mawji, Solveig Olafsdottir, Torsten Kanzow, Anton Velo, Antje Voelker, Igor Yashayaev, F. Alexander Haumann, Melanie J. Leng, Carol Arrowsmith, and Michael Meredith
Earth Syst. Sci. Data, 14, 2721–2735, https://doi.org/10.5194/essd-14-2721-2022, https://doi.org/10.5194/essd-14-2721-2022, 2022
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The CISE-LOCEAN seawater stable isotope dataset has close to 8000 data entries. The δ18O and δD isotopic data measured at LOCEAN have uncertainties of at most 0.05 ‰ and 0.25 ‰, respectively. Some data were adjusted to correct for evaporation. The internal consistency indicates that the data can be used to investigate time and space variability to within 0.03 ‰ and 0.15 ‰ in δ18O–δD17; comparisons with data analyzed in other institutions suggest larger differences with other datasets.
Matthew P. Humphreys, Erik H. Meesters, Henk de Haas, Szabina Karancz, Louise Delaigue, Karel Bakker, Gerard Duineveld, Siham de Goeyse, Andreas F. Haas, Furu Mienis, Sharyn Ossebaar, and Fleur C. van Duyl
Biogeosciences, 19, 347–358, https://doi.org/10.5194/bg-19-347-2022, https://doi.org/10.5194/bg-19-347-2022, 2022
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A series of submarine sinkholes were recently discovered on Luymes Bank, part of Saba Bank, a carbonate platform in the Caribbean Netherlands. Here, we investigate the waters inside these sinkholes for the first time. One of the sinkholes contained a body of dense, low-oxygen and low-pH water, which we call the
acid lake. We use measurements of seawater chemistry to work out what processes were responsible for forming the acid lake and discuss the consequences for the carbonate platform.
Tobias R. Vonnahme, Martial Leroy, Silke Thoms, Dick van Oevelen, H. Rodger Harvey, Svein Kristiansen, Rolf Gradinger, Ulrike Dietrich, and Christoph Völker
Biogeosciences, 18, 1719–1747, https://doi.org/10.5194/bg-18-1719-2021, https://doi.org/10.5194/bg-18-1719-2021, 2021
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Diatoms are crucial for Arctic coastal spring blooms, and their growth is controlled by nutrients and light. At the end of the bloom, inorganic nitrogen or silicon can be limiting, but nitrogen can be regenerated by bacteria, extending the algal growth phase. Modeling these multi-nutrient dynamics and the role of bacteria is challenging yet crucial for accurate modeling. We recreated spring bloom dynamics in a cultivation experiment and developed a representative dynamic model.
Kathrin Busch, Ulrike Hanz, Furu Mienis, Benjamin Mueller, Andre Franke, Emyr Martyn Roberts, Hans Tore Rapp, and Ute Hentschel
Biogeosciences, 17, 3471–3486, https://doi.org/10.5194/bg-17-3471-2020, https://doi.org/10.5194/bg-17-3471-2020, 2020
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Seamounts are globally abundant submarine structures that offer great potential to study the impacts and interactions of environmental gradients at a single geographic location. In an exemplary way, we describe potential mechanisms by which a seamount can affect the structure of pelagic and benthic (sponge-)associated microbial communities. We conclude that the geology, physical oceanography, biogeochemistry, and microbiology of seamounts are even more closely linked than currently appreciated.
Sabine Haalboom, David M. Price, Furu Mienis, Judith D. L. van Bleijswijk, Henko C. de Stigter, Harry J. Witte, Gert-Jan Reichart, and Gerard C. A. Duineveld
Biogeosciences, 17, 2499–2519, https://doi.org/10.5194/bg-17-2499-2020, https://doi.org/10.5194/bg-17-2499-2020, 2020
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Mineral mining in deep-sea hydrothermal settings will lead to the formation of plumes of fine-grained, chemically reactive, suspended matter. Understanding how natural hydrothermal plumes evolve as they disperse from their source, and how they affect their surrounding environment, may help in characterising the behaviour of the diluted part of mining plumes. The natural plume provided a heterogeneous, geochemically enriched habitat conducive to the development of a distinct microbial ecology.
Ulrike Hanz, Claudia Wienberg, Dierk Hebbeln, Gerard Duineveld, Marc Lavaleye, Katriina Juva, Wolf-Christian Dullo, André Freiwald, Leonardo Tamborrino, Gert-Jan Reichart, Sascha Flögel, and Furu Mienis
Biogeosciences, 16, 4337–4356, https://doi.org/10.5194/bg-16-4337-2019, https://doi.org/10.5194/bg-16-4337-2019, 2019
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Along the Namibian and Angolan margins, low oxygen conditions do not meet environmental ranges for cold–water corals and hence are expected to be unsuitable habitats. Environmental conditions show that tidal movements deliver water with more oxygen and high–quality organic matter, suggesting that corals compensate unfavorable conditions with availability of food. With the expected expansion of oxygen minimum zones in the future, this study provides an example how ecosystems cope with extremes.
Tanja Stratmann, Lidia Lins, Autun Purser, Yann Marcon, Clara F. Rodrigues, Ascensão Ravara, Marina R. Cunha, Erik Simon-Lledó, Daniel O. B. Jones, Andrew K. Sweetman, Kevin Köser, and Dick van Oevelen
Biogeosciences, 15, 4131–4145, https://doi.org/10.5194/bg-15-4131-2018, https://doi.org/10.5194/bg-15-4131-2018, 2018
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Extraction of polymetallic nodules will have negative impacts on the deep-sea ecosystem, but it is not known whether the ecosystem is able to recover from them. Therefore, in 1989 a sediment disturbance experiment was conducted in the Peru Basin to mimic deep-sea mining. Subsequently, the experimental site was re-visited 5 times to monitor the recovery of fauna. We developed food-web models for all 5 time steps and found that, even after 26 years, carbon flow in the system differs significantly.
Mathieu Rembauville, Stéphane Blain, Clara Manno, Geraint Tarling, Anu Thompson, George Wolff, and Ian Salter
Biogeosciences, 15, 3071–3084, https://doi.org/10.5194/bg-15-3071-2018, https://doi.org/10.5194/bg-15-3071-2018, 2018
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Sinking phytoplankton from the surface ocean provide the principal energy source to deep-ocean ecosystems. Our aim was to understand how different phytoplankton communities impact the chemical nature of this sinking material. We show certain types of phytoplankton can preferentially export energy-rich storage compounds to the seafloor. Any climate-driven effects on phytoplankton community structure could thus impact remote deep-ocean ecosystems thousands of kilometres beneath the surface.
Bernd Wagner, Thomas Wilke, Alexander Francke, Christian Albrecht, Henrike Baumgarten, Adele Bertini, Nathalie Combourieu-Nebout, Aleksandra Cvetkoska, Michele D'Addabbo, Timme H. Donders, Kirstin Föller, Biagio Giaccio, Andon Grazhdani, Torsten Hauffe, Jens Holtvoeth, Sebastien Joannin, Elena Jovanovska, Janna Just, Katerina Kouli, Andreas Koutsodendris, Sebastian Krastel, Jack H. Lacey, Niklas Leicher, Melanie J. Leng, Zlatko Levkov, Katja Lindhorst, Alessia Masi, Anna M. Mercuri, Sebastien Nomade, Norbert Nowaczyk, Konstantinos Panagiotopoulos, Odile Peyron, Jane M. Reed, Eleonora Regattieri, Laura Sadori, Leonardo Sagnotti, Björn Stelbrink, Roberto Sulpizio, Slavica Tofilovska, Paola Torri, Hendrik Vogel, Thomas Wagner, Friederike Wagner-Cremer, George A. Wolff, Thomas Wonik, Giovanni Zanchetta, and Xiaosen S. Zhang
Biogeosciences, 14, 2033–2054, https://doi.org/10.5194/bg-14-2033-2017, https://doi.org/10.5194/bg-14-2033-2017, 2017
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Lake Ohrid is considered to be the oldest existing lake in Europe. Moreover, it has a very high degree of endemic biodiversity. During a drilling campaign at Lake Ohrid in 2013, a 569 m long sediment sequence was recovered from Lake Ohrid. The ongoing studies of this record provide first important information on the environmental and evolutionary history of the lake and the reasons for its high endimic biodiversity.
Glaucia M. Fragoso, Alex J. Poulton, Igor M. Yashayaev, Erica J. H. Head, and Duncan A. Purdie
Biogeosciences, 14, 1235–1259, https://doi.org/10.5194/bg-14-1235-2017, https://doi.org/10.5194/bg-14-1235-2017, 2017
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This research describes a detailed analysis of current distributions of spring phytoplankton communities in the Labrador Sea based on 10 years of observations. Phytoplankton community composition varied mainly according to the contrasting hydrographical zones of the Labrador Sea. The taxonomic distinctions of these communities influenced the photosynthetic and biochemical signatures of near-surface waters, which may have a profound impact on the carbon cycle in high-latitude seas.
Dick van Oevelen, Christina E. Mueller, Tomas Lundälv, and Jack J. Middelburg
Biogeosciences, 13, 5789–5798, https://doi.org/10.5194/bg-13-5789-2016, https://doi.org/10.5194/bg-13-5789-2016, 2016
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Cold-water corals form true hotspots of biodiversity in the cold and dark deep sea, but need to live off of only small amounts of food that reach the deep sea. Using chemical tracers, this study investigated whether cold-water corals are picky eaters. We found that under low food conditions, they do not differentiate between food sources but they do differentiate at high food concentrations. This adaptation suggests that they are well adapted to exploit short food pulses efficiently.
J. D. L. van Bleijswijk, C. Whalen, G. C. A. Duineveld, M. S. S. Lavaleye, H. J. Witte, and F. Mienis
Biogeosciences, 12, 4483–4496, https://doi.org/10.5194/bg-12-4483-2015, https://doi.org/10.5194/bg-12-4483-2015, 2015
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The study characterizes the microbial community composition of a cold-water coral mound. Roche GS-FLX amplicon sequencing was carried out targeting Bacteria and Archaea. Water is well-mixed at 400m depth, less so at 5 mab, where composition of communities differed among summit, slope and off-mound. Near-bottom water differed from 5 mab, showing that waters in between frameworks represent a separate microbial habitat. Patterns of microbial distribution are coupled to topo- and hydrography.
F. Mienis, G. C. A. Duineveld, A. J. Davies, M. M. S. Lavaleye, S. W. Ross, H. Seim, J. Bane, H. van Haren, M. J. N. Bergman, H. de Haas, S. Brooke, and T. C. E. van Weering
Biogeosciences, 11, 2543–2560, https://doi.org/10.5194/bg-11-2543-2014, https://doi.org/10.5194/bg-11-2543-2014, 2014
C. E. Mueller, A. I. Larsson, B. Veuger, J. J. Middelburg, and D. van Oevelen
Biogeosciences, 11, 123–133, https://doi.org/10.5194/bg-11-123-2014, https://doi.org/10.5194/bg-11-123-2014, 2014
L. Pozzato, D. Van Oevelen, L. Moodley, K. Soetaert, and J. J. Middelburg
Biogeosciences, 10, 6879–6891, https://doi.org/10.5194/bg-10-6879-2013, https://doi.org/10.5194/bg-10-6879-2013, 2013
L.-A. Henry, J. Moreno Navas, and J. M. Roberts
Biogeosciences, 10, 2737–2746, https://doi.org/10.5194/bg-10-2737-2013, https://doi.org/10.5194/bg-10-2737-2013, 2013
K. Soetaert, D. van Oevelen, and S. Sommer
Biogeosciences, 9, 5341–5352, https://doi.org/10.5194/bg-9-5341-2012, https://doi.org/10.5194/bg-9-5341-2012, 2012
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Early life stages of fish under ocean alkalinity enhancement in coastal plankton communities
Planktonic foraminifera assemblage composition and flux dynamics inferred from an annual sediment trap record in the central Mediterranean Sea
Reefal ostracod assemblages from the Zanzibar Archipelago (Tanzania)
Growth response of Emiliania huxleyi to ocean alkalinity enhancement
Composite calcite and opal test in Foraminifera (Rhizaria)
Influence of oxygen minimum zone on macrobenthic community structure in the northern Benguela Upwelling System: a macro-nematode perspective
Phytoplankton adaptation to steady or changing environments affects marine ecosystem functioning
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Species richness and functional attributes of fish assemblages across a large-scale salinity gradient in shallow coastal areas
Modeling the growth and sporulation dynamics of the macroalga Ulva in mixed-age populations in cultivation and the formation of green tides
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Will daytime community calcification reflect reef accretion on future, degraded coral reefs?
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Hyunjae Chung, Jikang Park, Mijin Park, Yejin Kim, Unyoung Chun, Sukyoung Yun, Won Sang Lee, Hyun A. Choi, Ji Sung Na, Seung-Tae Yoon, and Won Young Lee
Biogeosciences, 21, 5199–5217, https://doi.org/10.5194/bg-21-5199-2024, https://doi.org/10.5194/bg-21-5199-2024, 2024
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Understanding how marine animals adapt to variations in marine environmental conditions is paramount. In this paper, we investigated the influence of changes in seawater and light conditions on the seasonal foraging behavior of Weddell seals in the Ross Sea, Antarctica. Our findings could serve as a baseline and establish a foundational understanding for future research, particularly concerning the impact of marine environmental changes on the ecosystem of the Ross Sea Marine Protected Area.
Anaïs Lebrun, Cale A. Miller, Marc Meynadier, Steeve Comeau, Pierre Urrutti, Samir Alliouane, Robert Schlegel, Jean-Pierre Gattuso, and Frédéric Gazeau
Biogeosciences, 21, 4605–4620, https://doi.org/10.5194/bg-21-4605-2024, https://doi.org/10.5194/bg-21-4605-2024, 2024
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We tested the effects of warming, low salinity, and low irradiance on Arctic kelps. We show that growth rates were similar across species and treatments. Alaria esculenta is adapted to low-light conditions. Saccharina latissima exhibited nitrogen limitation, suggesting coastal erosion and permafrost thawing could be beneficial. Laminaria digitata did not respond to the treatments. Gene expression of Hedophyllum nigripes and S. latissima indicated acclimation to the experimental treatments.
Silvan Urs Goldenberg, Ulf Riebesell, Daniel Brüggemann, Gregor Börner, Michael Sswat, Arild Folkvord, Maria Couret, Synne Spjelkavik, Nicolás Sánchez, Cornelia Jaspers, and Marta Moyano
Biogeosciences, 21, 4521–4532, https://doi.org/10.5194/bg-21-4521-2024, https://doi.org/10.5194/bg-21-4521-2024, 2024
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Ocean alkalinity enhancement (OAE) is being evaluated as a carbon dioxide removal technology for climate change mitigation. With an experiment on species communities, we show that larval and juvenile fish can be resilient to the resulting perturbation of seawater. Fish may hence recruit successfully and continue to support fisheries' production in regions of OAE. Our findings help to establish an environmentally safe operating space for this ocean-based solution.
Thibauld M. Béjard, Andrés S. Rigual-Hernández, Javier P. Tarruella, José-Abel Flores, Anna Sanchez-Vidal, Irene Llamas-Cano, and Francisco J. Sierro
Biogeosciences, 21, 4051–4076, https://doi.org/10.5194/bg-21-4051-2024, https://doi.org/10.5194/bg-21-4051-2024, 2024
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The Mediterranean Sea is regarded as a climate change hotspot. Documenting the population of planktonic foraminifera is crucial. In the Sicily Channel, fluxes are higher during winter and positively linked with chlorophyll a concentration and cool temperatures. A comparison with other Mediterranean sites shows the transitional aspect of the studied zone. Finally, modern populations significantly differ from those in the sediment, highlighting a possible effect of environmental change.
Skye Yunshu Tian, Martin Langer, Moriaki Yasuhara, and Chih-Lin Wei
Biogeosciences, 21, 3523–3536, https://doi.org/10.5194/bg-21-3523-2024, https://doi.org/10.5194/bg-21-3523-2024, 2024
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Through the first large-scale study of meiobenthic ostracods from the diverse and productive reef ecosystem in the Zanzibar Archipelago, Tanzania, we found that the diversity and composition of ostracod assemblages as controlled by benthic habitats and human impacts were indicative of overall reef health, and we highlighted the usefulness of ostracods as a model proxy to monitor and understand the degradation of reef ecosystems from the coral-dominated phase to the algae-dominated phase.
Giulia Faucher, Mathias Haunost, Allanah Joy Paul, Anne Ulrike Christiane Tietz, and Ulf Riebesell
EGUsphere, https://doi.org/10.5194/egusphere-2024-2201, https://doi.org/10.5194/egusphere-2024-2201, 2024
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OAE is being evaluated for its capacity to absorb atmospheric CO2 in the ocean, storing it long-term to mitigate climate change. As researchers plan for field tests to gain practical insights into OAE, sharing knowledge on its environmental impact on marine ecosystems is urgent. Our study examined NaOH-induced alkalinity increases on Emiliania huxleyi, a key coccolithophore species. We found that to prevent negative impacts on this species, the increase in ΔTA should not exceed 600 µmol kg-1.
Julien Richirt, Satoshi Okada, Yoshiyuki Ishitani, Katsuyuki Uematsu, Akihiro Tame, Kaya Oda, Noriyuki Isobe, Toyoho Ishimura, Masashi Tsuchiya, and Hidetaka Nomaki
Biogeosciences, 21, 3271–3288, https://doi.org/10.5194/bg-21-3271-2024, https://doi.org/10.5194/bg-21-3271-2024, 2024
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We report the first benthic foraminifera with a composite test (i.e. shell) made of opal, which coats the inner part of the calcitic layer. Using comprehensive techniques, we describe the morphology and the composition of this novel opal layer and provide evidence that the opal is precipitated by the foraminifera itself. We explore the potential precipitation process and function(s) of this composite test and further discuss the possible implications for palaeoceanographic reconstructions.
Said Mohamed Hashim, Beth Wangui Waweru, and Agnes Muthumbi
Biogeosciences, 21, 2995–3006, https://doi.org/10.5194/bg-21-2995-2024, https://doi.org/10.5194/bg-21-2995-2024, 2024
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The study investigates the impact of decreasing oxygen in the ocean on macrofaunal communities using the BUS as an example. It identifies distinct shifts in community composition and feeding guilds across oxygen zones, with nematodes dominating dysoxic areas. These findings underscore the complex responses of benthic organisms to oxygen gradients, crucial for understanding ecosystem dynamics in hypoxic environments and their implications for marine biodiversity and sustainability.
Isabell Hochfeld and Jana Hinners
EGUsphere, https://doi.org/10.5194/egusphere-2024-1246, https://doi.org/10.5194/egusphere-2024-1246, 2024
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Ecosystem models disagree on future changes in marine ecosystem functioning. We suspect that the lack of phytoplankton adaptation represents a major uncertainty factor, given the key role that phytoplankton play in marine ecosystems. Using an evolutionary ecosystem model, we found that phytoplankton adaptation can notably change simulated ecosystem dynamics. Future models should include phytoplankton adaptation, otherwise they can systematically overestimate future ecosystem-level changes.
Tanguy Soulié, Francesca Vidussi, Justine Courboulès, Marie Heydon, Sébastien Mas, Florian Voron, Carolina Cantoni, Fabien Joux, and Behzad Mostajir
Biogeosciences, 21, 1887–1902, https://doi.org/10.5194/bg-21-1887-2024, https://doi.org/10.5194/bg-21-1887-2024, 2024
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Due to climate change, it is projected that extreme rainfall events, which bring terrestrial matter into coastal seas, will occur more frequently in the Mediterranean region. To test the effects of runoffs of terrestrial matter on plankton communities from Mediterranean coastal waters, an in situ mesocosm experiment was conducted. The simulated runoff affected key processes mediated by plankton, such as primary production and respiration, suggesting major consequences of such events.
Chueh-Chen Tung, Yu-Shih Lin, Jian-Xiang Liao, Tzu-Hsuan Tu, James T. Liu, Li-Hung Lin, Pei-Ling Wang, and Chih-Lin Wei
Biogeosciences, 21, 1729–1756, https://doi.org/10.5194/bg-21-1729-2024, https://doi.org/10.5194/bg-21-1729-2024, 2024
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This study contrasts seabed food webs between a river-fed, high-energy canyon and the nearby slope. We show higher organic carbon (OC) flows through the canyon than the slope. Bacteria dominated the canyon, while seabed fauna contributed more to the slope food web. Due to frequent perturbation, the canyon had a lower faunal stock and OC recycling. Only 4 % of the seabed OC flux enters the canyon food web, suggesting a significant role of the river-fed canyon in transporting OC to the deep sea.
Joost de Vries, Fanny Monteiro, Gerald Langer, Colin Brownlee, and Glen Wheeler
Biogeosciences, 21, 1707–1727, https://doi.org/10.5194/bg-21-1707-2024, https://doi.org/10.5194/bg-21-1707-2024, 2024
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Calcifying phytoplankton (coccolithophores) utilize a life cycle in which they can grow and divide into two different phases. These two phases (HET and HOL) vary in terms of their physiology and distributions, with many unknowns about what the key differences are. Using a combination of lab experiments and model simulations, we find that nutrient storage is a critical difference between the two phases and that this difference allows them to inhabit different nitrogen input regimes.
Theodor Kindeberg, Karl Michael Attard, Jana Hüller, Julia Müller, Cintia Organo Quintana, and Eduardo Infantes
Biogeosciences, 21, 1685–1705, https://doi.org/10.5194/bg-21-1685-2024, https://doi.org/10.5194/bg-21-1685-2024, 2024
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Seagrass meadows are hotspots for biodiversity and productivity, and planting seagrass is proposed as a tool for mitigating biodiversity loss and climate change. We assessed seagrass planted in different years and found that benthic oxygen and carbon fluxes increased as the seabed developed from bare sediments to a mature seagrass meadow. This increase was partly linked to the diversity of colonizing algae which increased the light-use efficiency of the seagrass meadow community.
Anna-Selma van der Kaaden, Sandra R. Maier, Siluo Chen, Laurence H. De Clippele, Evert de Froe, Theo Gerkema, Johan van de Koppel, Furu Mienis, Christian Mohn, Max Rietkerk, Karline Soetaert, and Dick van Oevelen
Biogeosciences, 21, 973–992, https://doi.org/10.5194/bg-21-973-2024, https://doi.org/10.5194/bg-21-973-2024, 2024
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Combining hydrodynamic simulations and annotated videos, we separated which hydrodynamic variables that determine reef cover are engineered by cold-water corals and which are not. Around coral mounds, hydrodynamic zones seem to create a typical reef zonation, restricting corals from moving deeper (the expected response to climate warming). But non-engineered downward velocities in winter (e.g. deep winter mixing) seem more important for coral reef growth than coral engineering.
Xiaoke Xin, Giulia Faucher, and Ulf Riebesell
Biogeosciences, 21, 761–772, https://doi.org/10.5194/bg-21-761-2024, https://doi.org/10.5194/bg-21-761-2024, 2024
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Ocean alkalinity enhancement (OAE) is a promising approach to remove CO2 by accelerating natural rock weathering. However, some of the alkaline substances contain trace metals which could be toxic to marine life. By exposing three representative phytoplankton species to Ni released from alkaline materials, we observed varying responses of phytoplankton to nickel concentrations, suggesting caution should be taken and toxic thresholds should be avoided in OAE with Ni-rich materials.
Olmo Miguez-Salas, Angelika Brandt, Henry Knauber, and Torben Riehl
Biogeosciences, 21, 641–655, https://doi.org/10.5194/bg-21-641-2024, https://doi.org/10.5194/bg-21-641-2024, 2024
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In the deep sea, the interaction between benthic fauna (tracemakers) and substrate can be preserved as traces (i.e. lebensspuren), which are common features of seafloor landscapes, rendering them promising proxies for inferring biodiversity from marine images. No general correlation was observed between traces and benthic fauna. However, a local correlation was observed between specific stations depending on unknown tracemakers, tracemaker behaviour, and lebensspuren morphotypes.
Cale A. Miller, Pierre Urrutti, Jean-Pierre Gattuso, Steeve Comeau, Anaïs Lebrun, Samir Alliouane, Robert W. Schlegel, and Frédéric Gazeau
Biogeosciences, 21, 315–333, https://doi.org/10.5194/bg-21-315-2024, https://doi.org/10.5194/bg-21-315-2024, 2024
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This work describes an experimental system that can replicate and manipulate environmental conditions in marine or aquatic systems. Here, we show how the temperature and salinity of seawater delivered from a fjord is manipulated to experimental tanks on land. By constantly monitoring temperature and salinity in each tank via a computer program, the system continuously adjusts automated flow valves to ensure the seawater in each tank matches the targeted experimental conditions.
Rachel A. Kruft Welton, George Hoppit, Daniela N. Schmidt, James D. Witts, and Benjamin C. Moon
Biogeosciences, 21, 223–239, https://doi.org/10.5194/bg-21-223-2024, https://doi.org/10.5194/bg-21-223-2024, 2024
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We conducted a meta-analysis of known experimental literature examining how marine bivalve growth rates respond to climate change. Growth is usually negatively impacted by climate change. Bivalve eggs/larva are generally more vulnerable than either juveniles or adults. Available data on the bivalve response to climate stressors are biased towards early growth stages (commercially important in the Global North), and many families have only single experiments examining climate change impacts.
Vincent Mouchi, Christophe Pecheyran, Fanny Claverie, Cécile Cathalot, Marjolaine Matabos, Yoan Germain, Olivier Rouxel, Didier Jollivet, Thomas Broquet, and Thierry Comtet
Biogeosciences, 21, 145–160, https://doi.org/10.5194/bg-21-145-2024, https://doi.org/10.5194/bg-21-145-2024, 2024
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The impact of deep-sea mining will depend critically on the ability of larval dispersal of hydrothermal mollusks to connect and replenish natural populations. However, assessing connectivity is extremely challenging, especially in the deep sea. Here, we investigate the potential of using the chemical composition of larval shells to discriminate larval origins between multiple hydrothermal sites in the southwest Pacific. Our results confirm that this method can be applied with high accuracy.
Anna-Marie Winter, Nadezda Vasilyeva, and Artem Vladimirov
Biogeosciences, 20, 3683–3716, https://doi.org/10.5194/bg-20-3683-2023, https://doi.org/10.5194/bg-20-3683-2023, 2023
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There is an increasing number of fish in poor state, and many do not recover, even when fishing pressure is ceased. An Allee effect can hinder population recovery because it suppresses the fish's productivity at low abundance. With a model fitted to 17 Atlantic cod stocks, we find that ocean warming and fishing can cause an Allee effect. If present, the Allee effect hinders fish recovery. This shows that Allee effects are dynamic, not uncommon, and calls for precautionary management measures.
Afrah Alothman, Daffne López-Sandoval, Carlos M. Duarte, and Susana Agustí
Biogeosciences, 20, 3613–3624, https://doi.org/10.5194/bg-20-3613-2023, https://doi.org/10.5194/bg-20-3613-2023, 2023
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This study investigates bacterial dissolved inorganic carbon (DIC) fixation in the Red Sea, an oligotrophic ecosystem, using stable-isotope labeling and spectroscopy. The research reveals that bacterial DIC fixation significantly contributes to total DIC fixation, in the surface and deep water. The study demonstrates that as primary production decreases, the role of bacterial DIC fixation increases, emphasizing its importance with photosynthesis in estimating oceanic carbon dioxide production.
Arianna Zampollo, Thomas Cornulier, Rory O'Hara Murray, Jacqueline Fiona Tweddle, James Dunning, and Beth E. Scott
Biogeosciences, 20, 3593–3611, https://doi.org/10.5194/bg-20-3593-2023, https://doi.org/10.5194/bg-20-3593-2023, 2023
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This paper highlights the use of the bottom mixed layer depth (BMLD: depth between the end of the pycnocline and the mixed layer below) to investigate subsurface Chlorophyll a (a proxy of primary production) in temperate stratified shelf waters. The strict correlation between subsurface Chl a and BMLD becomes relevant in shelf-productive waters where multiple stressors (e.g. offshore infrastructure) will change the stratification--mixing balance and related carbon fluxes.
Marco Fusi, Sylvain Rigaud, Giovanna Guadagnin, Alberto Barausse, Ramona Marasco, Daniele Daffonchio, Julie Régis, Louison Huchet, Capucine Camin, Laura Pettit, Cristina Vina-Herbon, and Folco Giomi
Biogeosciences, 20, 3509–3521, https://doi.org/10.5194/bg-20-3509-2023, https://doi.org/10.5194/bg-20-3509-2023, 2023
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Oxygen availability in marine water and freshwater is very variable at daily and seasonal scales. The dynamic nature of oxygen fluctuations has important consequences for animal and microbe physiology and ecology, yet it is not fully understood. In this paper, we showed the heterogeneous nature of the aquatic oxygen landscape, which we defined here as the
oxyscape, and we addressed the importance of considering the oxyscape in the modelling and managing of aquatic ecosystems.
Anne L. Morée, Tayler M. Clarke, William W. L. Cheung, and Thomas L. Frölicher
Biogeosciences, 20, 2425–2454, https://doi.org/10.5194/bg-20-2425-2023, https://doi.org/10.5194/bg-20-2425-2023, 2023
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Ocean temperature and oxygen shape marine habitats together with species’ characteristics. We calculated the impacts of projected 21st-century warming and oxygen loss on the contemporary habitat volume of 47 marine species and described the drivers of these impacts. Most species lose less than 5 % of their habitat at 2 °C of global warming, but some species incur losses 2–3 times greater than that. We also calculate which species may be most vulnerable to climate change and why this is the case.
Markus A. Min, David M. Needham, Sebastian Sudek, Nathan Kobun Truelove, Kathleen J. Pitz, Gabriela M. Chavez, Camille Poirier, Bente Gardeler, Elisabeth von der Esch, Andrea Ludwig, Ulf Riebesell, Alexandra Z. Worden, and Francisco P. Chavez
Biogeosciences, 20, 1277–1298, https://doi.org/10.5194/bg-20-1277-2023, https://doi.org/10.5194/bg-20-1277-2023, 2023
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Emerging molecular methods provide new ways of understanding how marine communities respond to changes in ocean conditions. Here, environmental DNA was used to track the temporal evolution of biological communities in the Peruvian coastal upwelling system and in an adjacent enclosure where upwelling was simulated. We found that the two communities quickly diverged, with the open ocean being one found during upwelling and the enclosure evolving to one found under stratified conditions.
Wojciech Majewski, Witold Szczuciński, and Andrew J. Gooday
Biogeosciences, 20, 523–544, https://doi.org/10.5194/bg-20-523-2023, https://doi.org/10.5194/bg-20-523-2023, 2023
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We studied foraminifera living in the fjords of South Georgia, a sub-Antarctic island sensitive to climate change. As conditions in water and on the seafloor vary, different associations of these microorganisms dominate far inside, in the middle, and near fjord openings. Assemblages in inner and middle parts of fjords are specific to South Georgia, but they may become widespread with anticipated warming. These results are important for interpretating fossil records and monitoring future change.
Allanah Joy Paul, Lennart Thomas Bach, Javier Arístegui, Elisabeth von der Esch, Nauzet Hernández-Hernández, Jonna Piiparinen, Laura Ramajo, Kristian Spilling, and Ulf Riebesell
Biogeosciences, 19, 5911–5926, https://doi.org/10.5194/bg-19-5911-2022, https://doi.org/10.5194/bg-19-5911-2022, 2022
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We investigated how different deep water chemistry and biology modulate the response of surface phytoplankton communities to upwelling in the Peruvian coastal zone. Our results show that the most influential drivers were the ratio of inorganic nutrients (N : P) and the microbial community present in upwelling source water. These led to unexpected and variable development in the phytoplankton assemblage that could not be predicted by the amount of inorganic nutrients alone.
Hanna M. Kauko, Philipp Assmy, Ilka Peeken, Magdalena Różańska-Pluta, Józef M. Wiktor, Gunnar Bratbak, Asmita Singh, Thomas J. Ryan-Keogh, and Sebastien Moreau
Biogeosciences, 19, 5449–5482, https://doi.org/10.5194/bg-19-5449-2022, https://doi.org/10.5194/bg-19-5449-2022, 2022
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This article studies phytoplankton (microscopic
plantsin the ocean capable of photosynthesis) in Kong Håkon VII Hav in the Southern Ocean. Different species play different roles in the ecosystem, and it is therefore important to assess the species composition. We observed that phytoplankton blooms in this area are formed by large diatoms with strong silica armors, which can lead to high silica (and sometimes carbon) export to depth and be important prey for krill.
Chloe Carbonne, Steeve Comeau, Phoebe T. W. Chan, Keyla Plichon, Jean-Pierre Gattuso, and Núria Teixidó
Biogeosciences, 19, 4767–4777, https://doi.org/10.5194/bg-19-4767-2022, https://doi.org/10.5194/bg-19-4767-2022, 2022
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For the first time, our study highlights the synergistic effects of a 9-month warming and acidification combined stress on the early life stages of a Mediterranean azooxanthellate coral, Astroides calycularis. Our results predict a decrease in dispersion, settlement, post-settlement linear extention, budding and survival under future global change and that larvae and recruits of A. calycularis are stages of interest for this Mediterranean coral resistance, resilience and conservation.
Iris E. Hendriks, Anna Escolano-Moltó, Susana Flecha, Raquel Vaquer-Sunyer, Marlene Wesselmann, and Núria Marbà
Biogeosciences, 19, 4619–4637, https://doi.org/10.5194/bg-19-4619-2022, https://doi.org/10.5194/bg-19-4619-2022, 2022
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Seagrasses are marine plants with the capacity to act as carbon sinks due to their high primary productivity, using carbon for growth. This capacity can play a key role in climate change mitigation. We compiled and published data showing that two Mediterranean seagrass species have different metabolic rates, while the study method influences the rates of the measurements. Most communities act as carbon sinks, while the western basin might be more productive than the eastern Mediterranean.
Raúl Tapia, Sze Ling Ho, Hui-Yu Wang, Jeroen Groeneveld, and Mahyar Mohtadi
Biogeosciences, 19, 3185–3208, https://doi.org/10.5194/bg-19-3185-2022, https://doi.org/10.5194/bg-19-3185-2022, 2022
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We report census counts of planktic foraminifera in depth-stratified plankton net samples off Indonesia. Our results show that the vertical distribution of foraminifera species routinely used in paleoceanographic reconstructions varies in hydrographically distinct regions, likely in response to food availability. Consequently, the thermal gradient based on mixed layer and thermocline dwellers also differs for these regions, suggesting potential implications for paleoceanographic reconstructions.
Ricardo González-Gil, Neil S. Banas, Eileen Bresnan, and Michael R. Heath
Biogeosciences, 19, 2417–2426, https://doi.org/10.5194/bg-19-2417-2022, https://doi.org/10.5194/bg-19-2417-2022, 2022
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In oceanic waters, the accumulation of phytoplankton biomass in winter, when light still limits growth, is attributed to a decrease in grazing as the mixed layer deepens. However, in coastal areas, it is not clear whether winter biomass can accumulate without this deepening. Using 21 years of weekly data, we found that in the Scottish coastal North Sea, the seasonal increase in light availability triggers the accumulation of phytoplankton biomass in winter, when light limitation is strongest.
Birgit Koehler, Mårten Erlandsson, Martin Karlsson, and Lena Bergström
Biogeosciences, 19, 2295–2312, https://doi.org/10.5194/bg-19-2295-2022, https://doi.org/10.5194/bg-19-2295-2022, 2022
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Understanding species richness patterns remains a challenge for biodiversity management. We estimated fish species richness over a coastal salinity gradient (3–32) with a method that allowed comparing data from various sources. Species richness was 3-fold higher at high vs. low salinity, and salinity influenced species’ habitat preference, mobility and feeding type. If climate change causes upper-layer freshening of the Baltic Sea, further shifts along the identified patterns may be expected.
Uri Obolski, Thomas Wichard, Alvaro Israel, Alexander Golberg, and Alexander Liberzon
Biogeosciences, 19, 2263–2271, https://doi.org/10.5194/bg-19-2263-2022, https://doi.org/10.5194/bg-19-2263-2022, 2022
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The algal genus Ulva plays a major role in coastal ecosystems worldwide and is a promising prospect as an seagriculture crop. A substantial hindrance to cultivating Ulva arises from sudden sporulation, leading to biomass loss. This process is not yet well understood. Here, we characterize the dynamics of Ulva growth, considering the potential impact of sporulation inhibitors, using a mathematical model. Our findings are an essential step towards understanding the dynamics of Ulva growth.
Emanuela Fanelli, Samuele Menicucci, Sara Malavolti, Andrea De Felice, and Iole Leonori
Biogeosciences, 19, 1833–1851, https://doi.org/10.5194/bg-19-1833-2022, https://doi.org/10.5194/bg-19-1833-2022, 2022
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Zooplankton play a key role in marine ecosystems, forming the base of the marine food web and a link between primary producers and higher-order consumers, such as fish. This aspect is crucial in the Adriatic basin, one of the most productive and overexploited areas of the Mediterranean Sea. A better understanding of community and food web structure and their response to water mass changes is essential under a global warming scenario, as zooplankton are sensitive to climate change.
Masaya Yoshikai, Takashi Nakamura, Rempei Suwa, Sahadev Sharma, Rene Rollon, Jun Yasuoka, Ryohei Egawa, and Kazuo Nadaoka
Biogeosciences, 19, 1813–1832, https://doi.org/10.5194/bg-19-1813-2022, https://doi.org/10.5194/bg-19-1813-2022, 2022
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This study presents a new individual-based vegetation model to investigate salinity control on mangrove productivity. The model incorporates plant hydraulics and tree competition and predicts unique and complex patterns of mangrove forest structures that vary across soil salinity gradients. The presented model does not hold an empirical expression of salinity influence on productivity and thus may provide a better understanding of mangrove forest dynamics in future climate change.
Coulson A. Lantz, William Leggat, Jessica L. Bergman, Alexander Fordyce, Charlotte Page, Thomas Mesaglio, and Tracy D. Ainsworth
Biogeosciences, 19, 891–906, https://doi.org/10.5194/bg-19-891-2022, https://doi.org/10.5194/bg-19-891-2022, 2022
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Coral bleaching events continue to drive the degradation of coral reefs worldwide. In this study we measured rates of daytime coral reef community calcification and photosynthesis during a reef-wide bleaching event. Despite a measured decline in coral health across several taxa, there was no change in overall daytime community calcification and photosynthesis. These findings highlight potential limitations of these community-level metrics to reflect actual changes in coral health.
Hyewon Heather Kim, Jeff S. Bowman, Ya-Wei Luo, Hugh W. Ducklow, Oscar M. Schofield, Deborah K. Steinberg, and Scott C. Doney
Biogeosciences, 19, 117–136, https://doi.org/10.5194/bg-19-117-2022, https://doi.org/10.5194/bg-19-117-2022, 2022
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Heterotrophic marine bacteria are tiny organisms responsible for taking up organic matter in the ocean. Using a modeling approach, this study shows that characteristics (taxonomy and physiology) of bacteria are associated with a subset of ecological processes in the coastal West Antarctic Peninsula region, a system susceptible to global climate change. This study also suggests that bacteria will become more active, in particular large-sized cells, in response to changing climates in the region.
Alice E. Webb, Didier M. de Bakker, Karline Soetaert, Tamara da Costa, Steven M. A. C. van Heuven, Fleur C. van Duyl, Gert-Jan Reichart, and Lennart J. de Nooijer
Biogeosciences, 18, 6501–6516, https://doi.org/10.5194/bg-18-6501-2021, https://doi.org/10.5194/bg-18-6501-2021, 2021
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The biogeochemical behaviour of shallow reef communities is quantified to better understand the impact of habitat degradation and species composition shifts on reef functioning. The reef communities investigated barely support reef functions that are usually ascribed to conventional coral reefs, and the overall biogeochemical behaviour is found to be similar regardless of substrate type. This suggests a decrease in functional diversity which may therefore limit services provided by this reef.
Emmanuel Devred, Andrea Hilborn, and Cornelia Elizabeth den Heyer
Biogeosciences, 18, 6115–6132, https://doi.org/10.5194/bg-18-6115-2021, https://doi.org/10.5194/bg-18-6115-2021, 2021
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A theoretical model of grey seal seasonal abundance on Sable Island (SI) coupled with chlorophyll-a concentration [chl-a] measured by satellite revealed the impact of seal nitrogen fertilization on the surrounding waters of SI, Canada. The increase in seals from about 100 000 in 2003 to about 360 000 in 2018 during the breeding season is consistent with an increase in [chl-a] leeward of SI. The increase in seal abundance explains 8 % of the [chl-a] increase.
Julie Meilland, Michael Siccha, Maike Kaffenberger, Jelle Bijma, and Michal Kucera
Biogeosciences, 18, 5789–5809, https://doi.org/10.5194/bg-18-5789-2021, https://doi.org/10.5194/bg-18-5789-2021, 2021
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Planktonic foraminifera population dynamics has long been assumed to be controlled by synchronous reproduction and ontogenetic vertical migration (OVM). Due to contradictory observations, this concept became controversial. We here test it in the Atlantic ocean for four species of foraminifera representing the main clades. Our observations support the existence of synchronised reproduction and OVM but show that more than half of the population does not follow the canonical trajectory.
Federica Maggioni, Mireille Pujo-Pay, Jérome Aucan, Carlo Cerrano, Barbara Calcinai, Claude Payri, Francesca Benzoni, Yves Letourneur, and Riccardo Rodolfo-Metalpa
Biogeosciences, 18, 5117–5140, https://doi.org/10.5194/bg-18-5117-2021, https://doi.org/10.5194/bg-18-5117-2021, 2021
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Based on current experimental evidence, climate change will affect up to 90 % of coral reefs worldwide. The originality of this study arises from our recent discovery of an exceptional study site where environmental conditions (temperature, pH, and oxygen) are even worse than those forecasted for the future.
While these conditions are generally recognized as unfavorable for marine life, we found a rich and abundant coral reef thriving under such extreme environmental conditions.
Nisan Sariaslan and Martin R. Langer
Biogeosciences, 18, 4073–4090, https://doi.org/10.5194/bg-18-4073-2021, https://doi.org/10.5194/bg-18-4073-2021, 2021
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Analyses of foraminiferal assemblages from the Mamanguape mangrove estuary (northern Brazil) revealed highly diverse, species-rich, and structurally complex biotas. The atypical fauna resembles shallow-water offshore assemblages and are interpreted to be the result of highly saline ocean waters penetrating deep into the estuary. The findings contrast with previous studies, have implications for the fossil record, and provide novel perspectives for reconstructing mangrove environments.
Jutta E. Wollenburg, Jelle Bijma, Charlotte Cremer, Ulf Bickmeyer, and Zora Mila Colomba Zittier
Biogeosciences, 18, 3903–3915, https://doi.org/10.5194/bg-18-3903-2021, https://doi.org/10.5194/bg-18-3903-2021, 2021
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Cultured at in situ high-pressure conditions Cibicides and Cibicidoides taxa develop lasting ectoplasmic structures that cannot be retracted or resorbed. An ectoplasmic envelope surrounds their test and may protect the shell, e.g. versus carbonate aggressive bottom water conditions. Ectoplasmic roots likely anchor the specimens in areas of strong bottom water currents, trees enable them to elevate themselves above ground, and twigs stabilize and guide the retractable pseudopodial network.
Kumar Nimit
Biogeosciences, 18, 3631–3635, https://doi.org/10.5194/bg-18-3631-2021, https://doi.org/10.5194/bg-18-3631-2021, 2021
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The Indian Ocean Rim hosts many of the underdeveloped and emerging economies that depend on ocean resources for the livelihood of millions. Operational ocean information services cater to the requirements of resource managers and end-users to efficiently harness resources, mitigate threats and ensure safety. This paper outlines existing tools and explores the ongoing research that has the potential to convert the findings into operational services in the near- to midterm.
Finn Mielck, Rune Michaelis, H. Christian Hass, Sarah Hertel, Caroline Ganal, and Werner Armonies
Biogeosciences, 18, 3565–3577, https://doi.org/10.5194/bg-18-3565-2021, https://doi.org/10.5194/bg-18-3565-2021, 2021
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Marine sand mining is becoming more and more important to nourish fragile coastlines that face global change. We investigated the largest sand extraction site in the German Bight. The study reveals that after more than 35 years of mining, the excavation pits are still detectable on the seafloor while the sediment composition has largely changed. The organic communities living in and on the seafloor were strongly decimated, and no recovery is observable towards previous conditions.
France Van Wambeke, Elvira Pulido, Philippe Catala, Julie Dinasquet, Kahina Djaoudi, Anja Engel, Marc Garel, Sophie Guasco, Barbara Marie, Sandra Nunige, Vincent Taillandier, Birthe Zäncker, and Christian Tamburini
Biogeosciences, 18, 2301–2323, https://doi.org/10.5194/bg-18-2301-2021, https://doi.org/10.5194/bg-18-2301-2021, 2021
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Michaelis–Menten kinetics were determined for alkaline phosphatase, aminopeptidase and β-glucosidase in the Mediterranean Sea. Although the ectoenzymatic-hydrolysis contribution to heterotrophic prokaryotic needs was high in terms of N, it was low in terms of C. This study points out the biases in interpretation of the relative differences in activities among the three tested enzymes in regard to the choice of added concentrations of fluorogenic substrates.
Oscar E. Romero, Simon Ramondenc, and Gerhard Fischer
Biogeosciences, 18, 1873–1891, https://doi.org/10.5194/bg-18-1873-2021, https://doi.org/10.5194/bg-18-1873-2021, 2021
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Upwelling intensity along NW Africa varies on the interannual to decadal timescale. Understanding its changes is key for the prediction of future changes of CO2 sequestration in the northeastern Atlantic. Based on a multiyear (1988–2009) sediment trap experiment at the site CBmeso, fluxes and the species composition of the diatom assemblage are presented. Our data help in establishing the scientific basis for forecasting and modeling future states of this ecosystem and its decadal changes.
Katharine T. Bigham, Ashley A. Rowden, Daniel Leduc, and David A. Bowden
Biogeosciences, 18, 1893–1908, https://doi.org/10.5194/bg-18-1893-2021, https://doi.org/10.5194/bg-18-1893-2021, 2021
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Turbidity flows – underwater avalanches – are large-scale physical disturbances believed to have profound impacts on productivity and diversity of benthic communities in the deep sea. We reviewed published studies and found that current evidence for changes in productivity is ambiguous at best, but the influence on regional and local diversity is clearer. We suggest study design criteria that may lead to a better understanding of large-scale disturbance effects on deep-sea benthos.
Phillip Williamson, Hans-Otto Pörtner, Steve Widdicombe, and Jean-Pierre Gattuso
Biogeosciences, 18, 1787–1792, https://doi.org/10.5194/bg-18-1787-2021, https://doi.org/10.5194/bg-18-1787-2021, 2021
Short summary
Short summary
The reliability of ocean acidification research was challenged in early 2020 when a high-profile paper failed to corroborate previously observed impacts of high CO2 on the behaviour of coral reef fish. We now know the reason why: the
replicatedstudies differed in many ways. Open-minded and collaborative assessment of all research results, both negative and positive, remains the best way to develop process-based understanding of the impacts of ocean acidification on marine organisms.
Cited articles
Abelson, A. and Denny, M.: Settlement of Marine Organisms in Flow, Annu. Rev. Ecol. Syst., 28, 317–339, https://doi.org/10.1146/annurev.ecolsys.28.1.317, 1997.
Andrews, D. and Hargrave, B. T.: Close interval sampling of interstitial silicate and porosity in marine sediments, Geochim. Cosmochim. Ac., 48, 711–722, https://doi.org/10.1016/0016-7037(84)90097-8, 1984.
Barber, A., Sirois, M., Chaillou, G., and Gélinas, Y.: Stable isotope analysis of dissolved organic carbon in Canada's eastern coastal waters, Limnol. Oceanogr., 62, S71–S84, https://doi.org/10.1002/lno.10666, 2017.
Bart, M. C., Mueller, B., Rombouts, T., van de Ven, C., Tompkins, G. J., Osinga, R., Brussaard, C. P. D., MacDonald, B., Engel, A., Rapp, H. T., and de Goeij, J. M.: Dissolved organic carbon (DOC) is essential to balance the metabolic demands of four dominant North-Atlantic deep-sea sponges, Limnol. Oceanogr., 66, 925–938, https://doi.org/10.1002/lno.11652, 2021.
Beazley, L., Wang, Z., Kenchington, E., Yashayaev, I., Rapp, H. T., Xavier, J. R., Murillo, F. J., Fenton, D., and Fuller, S.: Predicted distribution of the glass sponge Vazella pourtalesi on the Scotian Shelf and its persistence in the face of climatic variability, PLOS ONE, 13, e0205505, https://doi.org/10.1371/journal.pone.0205505, 2018.
Beazley, L., Kenchington, E., Murillo, F., Brickman, D., Wang, Z., Davies, A., Roberts, E., and Rapp, H.: Climate change winner in the deep sea? Predicting the impacts of climate change on the distribution of the glass sponge Vazella pourtalesii, Mar. Ecol. Prog. Ser., 657, 1–23, https://doi.org/10.3354/meps13566, 2021.
Beazley, L. I., Kenchington, E. L., Murillo, F. J., and del Sacau, M. M.: Deep-sea sponge grounds enhance diversity and abundance of epibenthic megafauna in the Northwest Atlantic, ICES J. Mar. Sci., 70, 1471–1490, https://doi.org/10.1093/icesjms/fst124, 2013.
Becker, R. A., Wilks, A. R., and Brownrigg, R.: R package: Mapdata: Extra Map Databases (Version 2.3.1), CRAN [code], https://CRAN.R-project.org/package=mapdata (last access: 1 December 2023), 2022.
Belkin, I. M.: Rapid warming of Large Marine Ecosystems, Prog. Oceanogr., 81, 207–213, https://doi.org/10.1016/j.pocean.2009.04.011, 2009.
Benner, R., Louchouarn, P., and Amon, R. M. W.: Terrigenous dissolved organic matter in the Arctic Ocean and its transport to surface and deep waters of the North Atlantic, Global Biogeochem. Cy., 11, https://doi.org/10.1029/2004GB002398, 2005.
Bergquist, P. R.: Sponges, University of California Press, 282 pp., ISBN 978-0-520-03658-1, 1978.
Bloomfield, P.: Fourier analysis of time series: an introduction, John Wiley & Sons, https://doi.org/10.1002/0471722235, 2004.
Brito-Morales, I., Schoeman, D. S., Molinos, J. G., Burrows, M. T., Klein, C. J., Arafeh-Dalmau, N., Kaschner, K., Garilao, C., Kesner-Reyes, K., and Richardson, A. J.: Climate velocity reveals increasing exposure of deep-ocean biodiversity to future warming, Nat. Clim. Change, 10, 576–581, https://doi.org/10.1038/s41558-020-0773-5, 2020.
Brodnicke, O. B., Meyer, H. K., Busch, K., Xavier, J. R., Knudsen, S. W., Møller, P. R., Hentschel, U., and Sweet, M. J.: Deep-sea sponge derived environmental DNA analysis reveals demersal fish biodiversity of a remote Arctic ecosystem, Environmental DNA, 5, 1405–1417, https://doi.org/10.1002/edn3.451, 2023.
Buhl-Mortensen, L., Vanreusel, A., Gooday, A. J., Levin, L. A., Priede, I. G., Buhl-Mortensen, P., Gheerardyn, H., King, N. J., and Raes, M.: Biological structures as a source of habitat heterogeneity and biodiversity on the deep ocean margins, Mar, Ecol,, 31, 21–50, https://doi.org/10.1111/j.1439-0485.2010.00359.x, 2010.
Cacchione, D. A., Pratson, L. F., and Ogston, A. S.: The Shaping of Continental Slopes by Internal Tides, Science, 296, 724–727, https://doi.org/10.1126/science.1069803, 2002.
Campitelli, E.: metR: Tools for Easier Analysis of Meteorological Fields, Zenodo, https://doi.org/10.5281/zenodo.2593516, 2021.
Cathalot, C., Van Oevelen, D., Cox, T. J. S., Kutti, T., Lavaleye, M., Duineveld, G., and Meysman, F. J. R.: Cold-water coral reefs and adjacent sponge grounds: hotspots of benthic respiration and organic carbon cycling in the deep sea, Front. Mar. Sci., 2, 37, https://doi.org/10.3389/fmars.2015.00037, 2015.
Centurioni, L. R., Turton, J., Lumpkin, R., Braasch, L., Brassington, G., Chao, Y., Charpentier, E., Chen, Z., Corlett, G., Dohan, K., Donlon, C., Gallage, C., Hormann, V., Ignatov, A., Ingleby, B., Jensen, R., Kelly-Gerreyn, B. A., Koszalka, I. M., Lin, X., Lindstrom, E., Maximenko, N., Merchant, C. J., Minnett, P., O'Carroll, A., Paluszkiewicz, T., Poli, P., Poulain, P.-M., Reverdin, G., Sun, X., Swail, V., Thurston, S., Wu, L., Yu, L., Wang, B., and Zhang, D.: Global in situ Observations of Essential Climate and Ocean Variables at the Air–Sea Interface, Front. Mar. Sci., 6, https://doi.org/10.3389/fmars.2019.00419, 2019.
Chawarski, J., Klevjer, T. A., Coté, D., and Geoffroy, M.: Evidence of temperature control on mesopelagic fish and zooplankton communities at high latitudes, Front. Mar. Sci., 9, https://doi.org/10.3389/fmars.2022.917985, 2022.
Christie, W. W.: A simple procedure for rapid transmethylation of glycerolipids and cholesteryl esters, J. Lipid Res., 23, 1072–1075, https://doi.org/10.1016/S0022-2275(20)38081-0, 1982.
Colaço, A., Rapp, H. T., Campanyà-Llovet, N., and Pham, C. K.: Bottom trawling in sponge grounds of the Barents Sea (Arctic Ocean): A functional diversity approach, Deep-Sea Res. Pt. I, 183, 103742, https://doi.org/10.1016/j.dsr.2022.103742, 2022.
Cote, D.: Cruise report – Integrated Studies and Ecosystem Characterization of the Labrador Sea Deep Ocean (ISECOLD), Zenodo, https://doi.org/10.5281/zenodo.3862120, 2020.
Coté, D., Edinger, E. N., and Mercier, A.: CCGS Amundsen Field Report. Integrated studies and ecosystem characterization of the Labrador Sea Deep Ocean (ISECOLD), p. 41, https://amundsenscience.com/expeditions/2018-expedition/ (last access: 3 December 2024), 2018.
Culwick, T., Phillips, J., Goodwin, C., Rayfield, E. J., and Hendry, K. R.: Sponge Density and Distribution Constrained by Fluid Forcing in the Deep Sea, Front. Mar. Sci., 7, 395, https://doi.org/10.3389/fmars.2020.00395, 2020.
Cuny, J., Rhines, P. B., Niiler, P. P., and Bacon, S.: Labrador Sea Boundary Currents and the Fate of the Irminger Sea Water, J. Phys. Oceanogr., 32, 627–647, https://doi.org/10.1175/1520-0485(2002)032<0627:LSBCAT>2.0.CO;2, 2002.
Curry, B., Lee, C. M., and Petrie, B.: Volume, Freshwater, and Heat Fluxes through Davis Strait, 2004–05, J. Phys. Oceanogr., 41, 429–436, https://doi.org/10.1175/2010JPO4536.1, 2011.
Curry, B., Lee, C. M., Petrie, B., Moritz, R. E., and Kwok, R.: Multiyear Volume, Liquid Freshwater, and Sea Ice Transports through Davis Strait, 2004–10, J. Phys. Oceanogr., 44, 1244–1266, https://doi.org/10.1175/JPO-D-13-0177.1, 2014.
Cyr, F. and Galbraith, P. S.: A climate index for the Newfoundland and Labrador shelf, Earth Syst. Sci. Data, 13, 1807–1828, https://doi.org/10.5194/essd-13-1807-2021, 2021.
Cyr, F. and Larouche, P.: Thermal Fronts Atlas of Canadian Coastal Waters, Atmos. Ocean, 53, 212–236, https://doi.org/10.1080/07055900.2014.986710, 2015.
Cyr, F., Lewis, K., Bélanger, D., Regular, P., Clay, S., and Devred, E.: Physical controls and ecological implications of the timing of the spring phytoplankton bloom on the Newfoundland and Labrador shelf, Limnol. Oceanogr. Lett., 9, 191–198, https://doi.org/10.1002/lol2.10347, 2023.
Dalsgaard, J., St. John, M., Kattner, G., Müller-Navarra, D., and Hagen, W.: Fatty acid trophic markers in the pelagic marine environment, in: Advances in Marine Biology, vol. 46, Elsevier, 225–340, https://doi.org/10.1016/S0065-2881(03)46005-7, 2003.
Davison, J. J., van Haren, H., Hosegood, P., Piechaud, N., and Howell, K. L.: The distribution of deep-sea sponge aggregations (Porifera) in relation to oceanographic processes in the Faroe-Shetland Channel, Deep-Sea Res. Pt. I, 146, 55–61, https://doi.org/10.1016/j.dsr.2019.03.005, 2019.
de Froe, E., Yashayaev, I., Mohn, C., Vad, J., Mienis, F., Duineveld, G., Kenchington, E., Head, E., Ross, S. W., Blackbird, S., Wolff, G. A., Roberts, M., MacDonald, B. W., Tulloch, G., and van Oevelen, D.: Supplementary data to: Characterizing regional oceanography and bottom environmental conditions at two contrasting sponge grounds on the northern Labrador Shelf, Zenodo [data set], https://doi.org/10.5281/zenodo.10571403, 2024.
de Kluijver, A., Bart, M. C., van Oevelen, D., de Goeij, J. M., Leys, S. P., Maier, S. R., Maldonado, M., Soetaert, K., Verbiest, S., and Middelburg, J. J.: An Integrative Model of Carbon and Nitrogen Metabolism in a Common Deep-Sea Sponge (Geodia barretti), Front. Mar. Sci., 7, 1131, https://doi.org/10.3389/fmars.2020.596251, 2021.
Dinn, C., Zhang, X., Edinger, E., and Leys, S. P.: Sponge communities in the eastern Canadian Arctic: species richness, diversity and density determined using targeted benthic sampling and underwater video analysis, Polar Biol., 43, 1287–1305, https://doi.org/10.1007/s00300-020-02709-z, 2020.
Drinkwater, K. F. and Harding, G. C.: Effects of the Hudson Strait outflow on the biology of the Labrador Shelf, Can. J. Fish. Aquat. Sci., 58, 171–184, https://doi.org/10.1139/f00-210, 2001.
Drinkwater, K. F. and Jones, E. P.: Density stratification, nutrient and chlorophyll distributions in the Hudson Strait region during summer and their relation to tidal mixing, Cont. Shelf Res., 7, 599–607, https://doi.org/10.1016/0278-4343(87)90025-2, 1987.
Dunbar, M. J.: Eastern Arctic waters: a summary of our present knowledge of the physical oceanography of the eastern arctic area, from Hudson bay to cape Farewell and from Bell Isle to Smith sound, Fisheries Research Board of Canada, Ottawa, 131 pp., https://waves-vagues.dfo-mpo.gc.ca/library-bibliotheque/10206.pdf (last access: 3 December 2024), 1951.
Edwards, M. and Richardson, A. J.: Impact of climate change on marine pelagic phenology and trophic mismatch, Nature, 430, 881–884, https://doi.org/10.1038/nature02808, 2004.
Egbert, G. D. and Erofeeva, S. Y.: Efficient Inverse Modeling of Barotropic Ocean Tides, J. Atmos. Ocean. Technol., 19, 183–204, https://doi.org/10.1175/1520-0426(2002)019<0183:EIMOBO>2.0.CO;2, 2002.
Elipot, S., Lumpkin, R., Perez, R. C., Lilly, J. M., Early, J. J., and Sykulski, A. M.: A global surface drifter data set at hourly resolution, J. Geophys. Res.-Oceans, 121, 2937–2966, https://doi.org/10.1002/2016JC011716, 2016.
Elipot, S., Sykulski, A. M., Lumpkin, R., Centurioni, L. R., and Pazos, M.: Hourly location, current velocity, and temperature collected from Global Drifter Program drifters world-wide, NOAA National Centers for Environmental Information [data set], https://doi.org/10.25921/x46c-3620, 2022.
Fissel, D. B. and Lemon, D. D.: Analysis of physical oceanographic data from the Labrador Shelf, summer 1980, No. 39, Canadian Contractor Report of Hydrography and Ocean Sciences, 136 pp., Bedford Institute of Oceanography. https://www.osti.gov/etdeweb/biblio/5105285 (last access: 3 December 2024), 1991.
Frajka-Williams, E. and Rhines, P. B.: Physical controls and interannual variability of the Labrador Sea spring phytoplankton bloom in distinct regions, Deep-Sea Res. Pt. I, 57, 541–552, https://doi.org/10.1016/j.dsr.2010.01.003, 2010.
Frajka-Williams, E., Rhines, P. B., and Eriksen, C. C.: Physical controls and mesoscale variability in the Labrador Sea spring phytoplankton bloom observed by Seaglider, Deep-Sea Res. Pt. I, 56, 2144–2161, https://doi.org/10.1016/j.dsr.2009.07.008, 2009.
Fry, B.: Stable Isotope Ecology, Springer-Verlag, New York, https://doi.org/10.1007/0-387-33745-8, 2006.
Fuentes-Yaco, C., Koeller, P. A., Sathyendranath, S., and Platt, T.: Shrimp (Pandalus borealis) growth and timing of the spring phytoplankton bloom on the Newfoundland–Labrador Shelf, Fish. Oceanogr., 16, 116–129, https://doi.org/10.1111/j.1365-2419.2006.00402.x, 2007.
GEBCO Bathymetric Compilation Group: The GEBCO_2023 Grid – a continuous terrain model of the global oceans and land, [data set], https://doi.org/10.5285/f98b053b-0cbc-6c23-e053-6c86abc0af7b, 2023.
Gille, S. T., Metzger, E. J., and Tokmakian: Seafloor Topography and Ocean Circulation, Oceanography, 17, 47–54, https://doi.org/10.5670/oceanog.2004.66, 2004.
Grebmeier, J. M. and Barry, J. P.: The influence of oceanographic processes on pelagic-benthic coupling in polar regions: A benthic perspective, J. Mar. Syst., 2, 495–518, https://doi.org/10.1016/0924-7963(91)90049-Z, 1991.
Griffiths, D. K., Pingree, R. D., and Sinclair, M.: Summer tidal fronts in the near-arctic regions of Foxe Basin and Hudson Bay, Deep-Sea Res. Pt. I, 28, 865–873, https://doi.org/10.1016/S0198-0149(81)80006-4, 1981.
Grolemund, G. and Wickham, H.: Dates and Times Made Easy with lubridate, J. Stat. Softw., 40, 1–25, 2011.
Guillot, P.: Cruise Bright/SN/Atlas 1802 (leg 2) CTD processing notes, Amundsen Science, 2018.
Haalboom, S., de Stigter, H., Duineveld, G., van Haren, H., Reichart, G.-J., and Mienis, F.: Suspended particulate matter in a submarine canyon (Whittard Canyon, Bay of Biscay, NE Atlantic Ocean): Assessment of commonly used instruments to record turbidity, Mar. Geol., 434, 106439, https://doi.org/10.1016/j.margeo.2021.106439, 2021.
Haalboom, S., de Stigter, H. C., Mohn, C., Vandorpe, T., Smit, M., de Jonge, L., and Reichart, G.-J.: Monitoring of a sediment plume produced by a deep-sea mining test in shallow water, Málaga Bight, Alboran Sea (southwestern Mediterranean Sea), Mar. Geol., 456, 106971, https://doi.org/10.1016/j.margeo.2022.106971, 2023.
Hanz, U., Roberts, E. M., Duineveld, G., Davies, A., Haren, H. van, Rapp, H. T., Reichart, G.-J., and Mienis, F.: Long-term Observations Reveal Environmental Conditions and Food Supply Mechanisms at an Arctic Deep-Sea Sponge Ground, J. Geophys. Res.-Oceans, 126, e2020JC016776, https://doi.org/10.1029/2020JC016776, 2021a.
Hanz, U., Beazley, L., Kenchington, E., Duineveld, G., Rapp, H. T., and Mienis, F.: Seasonal Variability in Near-bed Environmental Conditions in the Vazella pourtalesii Glass Sponge Grounds of the Scotian Shelf, Front. Mar. Sci., 7, 597682, https://doi.org/10.3389/fmars.2020.597682, 2021b.
Hanz, U., Riekenberg, P., de Kluijver, A., van der Meer, M., Middelburg, J. J., de Goeij, J. M., Bart, M. C., Wurz, E., Colaço, A., Duineveld, G. C. A., Reichart, G.-J., Rapp, H.-T., and Mienis, F.: The important role of sponges in carbon and nitrogen cycling in a deep-sea biological hotspot, Funct. Ecol., 36, 2188–2199, https://doi.org/10.1111/1365-2435.14117, 2022.
Harrison, G. W., Yngve Børsheim, K., Li, W. K. W., Maillet, G. L., Pepin, P., Sakshaug, E., Skogen, M. D., and Yeats, P. A.: Phytoplankton production and growth regulation in the Subarctic North Atlantic: A comparative study of the Labrador Sea-Labrador/Newfoundland shelves and Barents/Norwegian/Greenland seas and shelves, Prog. Oceanogr., 114, 26–45, https://doi.org/10.1016/j.pocean.2013.05.003, 2013.
Head, E. J. H., Harris, L. R., and Yashayaev, I.: Distributions of Calanus spp. and other mesozooplankton in the Labrador Sea in relation to hydrography in spring and summer (1995–2000), Prog. Oceanogr., 59, 1–30, https://doi.org/10.1016/S0079-6611(03)00111-3, 2003.
Head, E. J. H., Melle, W., Pepin, P., Bagøien, E., and Broms, C.: On the ecology of Calanus finmarchicus in the Subarctic North Atlantic: A comparison of population dynamics and environmental conditions in areas of the Labrador Sea-Labrador/Newfoundland Shelf and Norwegian Sea Atlantic and Coastal Waters, Prog. Oceanogr., 114, 46–63, https://doi.org/10.1016/j.pocean.2013.05.004, 2013.
Hijmans, R. J.: terra: Spatial Data Analysis, CRAN [code], https://doi.org/10.32614/CRAN.package.terra, 2023.
Hoffmann, F., Radax, R., Woebken, D., Holtappels, M., Lavik, G., Rapp, H. T., Schläppy, M.-L., Schleper, C., and Kuypers, M. M. M.: Complex nitrogen cycling in the sponge Geodia barretti, Environ. Microb., 11, 2228–2243, https://doi.org/10.1111/j.1462-2920.2009.01944.x, 2009.
Hogg, M. M., Tendal, O. S., Conway, K. W., Pomponi, S. A., Soest, R. W. M. van, Gutt, J., Krautter, M., and Roberts, J. M.: Deep-Sea Sponge Grounds: Reservoirs of Biodiversity, in Cambridge: World Conservation Monitoring Centre, UNEP regional seas report and studies, no. 189, UNEP-WCMC Biodiversity Series, 32, 2010.
Howell, K.-L., Piechaud, N., Downie, A.-L., and Kenny, A.: The distribution of deep-sea sponge aggregations in the North Atlantic and implications for their effective spatial management, Deep-Sea Res. Pt. I, 115, 309–320, https://doi.org/10.1016/j.dsr.2016.07.005, 2016.
Hunter-Cevera, K. R., Neubert, M. G., Olson, R. J., Solow, A. R., Shalapyonok, A., and Sosik, H. M.: Physiological and ecological drivers of early spring blooms of a coastal phytoplankter, Science, 354, 326–329, https://doi.org/10.1126/science.aaf8536, 2016.
Iken, K., Brey, T., Wand, U., Voigt, J., and Junghans, P.: Food web structure of the benthic community at the Porcupine Abyssal Plain (NE Atlantic): a stable isotope analysis, Prog. Oceanogr., 50, 383–405, https://doi.org/10.1016/S0079-6611(01)00062-3, 2001.
Jones, E. P., Dyrssen, D., and Coote, A. R.: Nutrient Regeneration in Deep Baffin Bay with Consequences for Measurements of the Conservative Tracer NO and Fossil Fuel CO2 in the Oceans, Can. J. Fish. Aquat. Sci., 41, 30–35, https://doi.org/10.1139/f84-003, 1984.
Jones, S. E., Jago, C. F., Bale, A. J., Chapman, D., Howland, R. J. M., and Jackson, J.: Aggregation and resuspension of suspended particulate matter at a seasonally stratified site in the southern North Sea: physical and biological controls, Cont. Shelf Res., 18, 1283–1309, https://doi.org/10.1016/S0278-4343(98)00044-2, 1998.
Jorda, G., Marbà, N., Bennett, S., Santana-Garcon, J., Agusti, S., and Duarte, C. M.: Ocean warming compresses the three-dimensional habitat of marine life, Nat. Ecol. Evol., 4, 109–114, https://doi.org/10.1038/s41559-019-1058-0, 2020.
Kahn, A. S., Yahel, G., Chu, J. W. F., Tunnicliffe, V., and Leys, S. P.: Benthic grazing and carbon sequestration by deep-water glass sponge reefs: Deep-water glass sponge reefs, Limnol. Oceanogr., 60, 78–88, https://doi.org/10.1002/lno.10002, 2015.
Kahn, A. S., Chu, J. W. F., and Leys, S. P.: Trophic ecology of glass sponge reefs in the Strait of Georgia, British Columbia, Sci. Rep., 8, 756, https://doi.org/10.1038/s41598-017-19107-x, 2018.
Kazanidis, G., van Oevelen, D., Veuger, B., and Witte, U. F. M.: Unravelling the versatile feeding and metabolic strategies of the cold-water ecosystem engineer Spongosorites coralliophaga (Stephens, 1915), Deep-Sea Res. Pt. I, 141, 71–82, https://doi.org/10.1016/j.dsr.2018.07.009, 2018.
Kelley, D. and Richards, C.: oce: Analysis of Oceanographic Data, CRAN [code], https://doi.org/10.32614/CRAN.package.oce, 2020.
Kenchington, E., Power, D., and Koen-Alonso, M.: Associations of demersal fish with sponge grounds on the continental slopes of the northwest Atlantic, Mar. Ecol. Prog. Ser., 477, 217–230, https://doi.org/10.3354/meps10127, 2013.
Kenchington, E., Yashayaev, I., Tendal, O. S., and Jørgensbye, H.: Water mass characteristics and associated fauna of a recently discovered Lophelia pertusa (Scleractinia: Anthozoa) reef in Greenlandic waters, Polar Biol., 40, 321–337, https://doi.org/10.1007/s00300-016-1957-3, 2017.
Kenchington, E. L., Lirette, C., Cogswell, A., Archambault, D., Archambault, P., Benoit, H., Bernier, D., Brodie, B., Fuller, S., Gilkinson, K., Lévesque, M., Power, D., Siferd, T., Treble, M., and Wareham, V.: Delineating Coral and Sponge Concentrations in the Biogeographic Regions of the East Coast of Canada Using Spatial Analyses, DFO Can. Sci. Advis. Sec. Res. Doc., vi + 202 pp., 2010.
Kieke, D. and Yashayaev, I.: Studies of Labrador Sea Water formation and variability in the subpolar North Atlantic in the light of international partnership and collaboration, Prog. Oceanogr., 132, 220–232, https://doi.org/10.1016/j.pocean.2014.12.010, 2015.
Kiriakoulakis, K., Bett, B. J., White, M., and Wolff, G. A.: Organic biogeochemistry of the Darwin Mounds, a deep-water coral ecosystem, of the NE Atlantic, Deep-Sea Res. Pt. I, 51, 1937–1954, https://doi.org/10.1016/j.dsr.2004.07.010, 2004.
Klitgaard, A. B.: The fauna associated with outer shelf and upper slope sponges (Porifera, Demospongiae) at the Faroe Islands, northeastern Atlantic, Sarsia, 80, 1–22, https://doi.org/10.1080/00364827.1995.10413574, 1995.
Klitgaard, A. B. and Tendal, O. S.: Distribution and species composition of mass occurrences of large-sized sponges in the northeast Atlantic, Prog. Oceanogr., 61, 57–98, https://doi.org/10.1016/j.pocean.2004.06.002, 2004.
Knudby, A., Kenchington, E., and Murillo, F. J.: Modeling the Distribution of Geodia Sponges and Sponge Grounds in the Northwest Atlantic, PLoS ONE, 8, e82306, https://doi.org/10.1371/journal.pone.0082306, 2013.
Kollmeyer, R. C., McGill, D. A., and Corwin, N.: Oceanography of the Labrador Sea in the vicinity of Hudson Strait in 1965, Washington, D.C., U.S. Coast Guard Oceanographic Unit, 108 pp., https://doi.org/10.5962/bhl.title.16966, 1967.
Kutti, T., Bannister, R. J., and Fosså, J. H.: Community structure and ecological function of deep-water sponge grounds in the Traenadypet MPA–Northern Norwegian continental shelf, Cont. Shelf Res., 69, 21–30, https://doi.org/10.1016/j.csr.2013.09.011, 2013.
Kutti, T., Fosså, J., and Bergstad, O.: Influence of structurally complex benthic habitats on fish distribution, Mar. Ecol. Prog. Ser., 520, 175–190, https://doi.org/10.3354/meps11047, 2015.
Canadian Ice Service: Latest Ice conditions, https://www.canada.ca/en/environment-climate-change/services/ice-forecasts-observations/latest-conditions.html (last access: 2 January 2022), 2022.
Lazier, J.: Seasonal variability of temperature and salinity in the Labrador Current, J. Marine Res., 40, https://elischolar.library.yale.edu/journal_of_marine_research/1647, 1982.
Lazier, J., Hendry, R., Clarke, A., Yashayaev, I., and Rhines, P.: Convection and restratification in the Labrador Sea, 1990–2000, Deep-Sea Res. Pt. I, 49, 1819–1835, https://doi.org/10.1016/S0967-0637(02)00064-X, 2002.
Lehmann, N., Kienast, M., Granger, J., Bourbonnais, A., Altabet, M. A., and Tremblay, J.-É.: Remote Western Arctic Nutrients Fuel Remineralization in Deep Baffin Bay, Global Biogeochem. Cy., 33, 649–667, https://doi.org/10.1029/2018GB006134, 2019.
Lesht, B. M.: Relationship between sediment resuspension and the statistical frequency distribution of bottom shear stress, Mar. Geol., 32, M19–M27, https://doi.org/10.1016/0025-3227(79)90142-7, 1979.
Leys, S. P. and Lauzon, N. R. J.: Hexactinellid sponge ecology: growth rates and seasonality in deep water sponges, J. Exp. Mar. Biol. Ecol., 230, 111–129, https://doi.org/10.1016/S0022-0981(98)00088-4, 1998.
Leys, S. P., Yahel, G., Reidenbach, M. A., Tunnicliffe, V., Shavit, U., and Reiswig, H. M.: The Sponge Pump: The Role of Current Induced Flow in the Design of the Sponge Body Plan, PLoS ONE, 6, e27787, https://doi.org/10.1371/journal.pone.0027787, 2011.
López-Acosta, M., Leynaert, A., and Maldonado, M.: Silicon consumption in two shallow-water sponges with contrasting biological features, Limnol. Oceanogr., 61, 2139–2150, https://doi.org/10.1002/lno.10359, 2016.
Maier, S. R., Kutti, T., Bannister, R. J., Fang, J. K.-H., van Breugel, P., van Rijswijk, P., and van Oevelen, D.: Recycling pathways in cold-water coral reefs: Use of dissolved organic matter and bacteria by key suspension feeding taxa, Sci. Rep., 10, 9942, https://doi.org/10.1038/s41598-020-66463-2, 2020a.
Maier, S. R., Bannister, R. J., van Oevelen, D., and Kutti, T.: Seasonal controls on the diet, metabolic activity, tissue reserves and growth of the cold-water coral Lophelia pertusa, Coral Reefs, 39, 173–187, https://doi.org/10.1007/s00338-019-01886-6, 2020b.
Maldonado, M.: The ecology of the sponge larva, Can. J. Zool., 84, 175–194, https://doi.org/10.1139/z05-177, 2011.
Maldonado, M., Navarro, L., Grasa, A., Gonzalez, A., and Vaquerizo, I.: Silicon uptake by sponges: a twist to understanding nutrient cycling on continental margins, Sci. Rep., 1, 30, https://doi.org/10.1038/srep00030, 2011.
Maldonado, M., Ribes, M., and van Duyl, F. C.: Nutrient Fluxes Through Sponges, in: Advances in Marine Biology, vol. 62, Elsevier, 113–182, https://doi.org/10.1016/B978-0-12-394283-8.00003-5, 2012.
Maldonado, M., López-Acosta, M., Beazley, L., Kenchington, E., Koutsouveli, V., and Riesgo, A.: Cooperation between passive and active silicon transporters clarifies the ecophysiology and evolution of biosilicification in sponges, Sci. Adv., 6, eaba9322, https://doi.org/10.1126/sciadv.aba9322, 2020a.
Maldonado, M., Beazley, L., López-Acosta, M., Kenchington, E., Casault, B., Hanz, U., and Mienis, F.: Massive silicon utilization facilitated by a benthic-pelagic coupled feedback sustains deep-sea sponge aggregations, Limnol. Oceanogr., 66, 11610, https://doi.org/10.1002/lno.11610, 2020b.
MATLAB: version 7.10.0 (R2010a), The MathWorks Inc., Natick, Massachusetts, https://www.mathworks.com (last access: 3 December 2024), 2010.
McIntyre, F. D., Drewery, J., Eerkes-Medrano, D., and Neat, F. C.: Distribution and diversity of deep-sea sponge grounds on the Rosemary Bank Seamount, NE Atlantic, Mar. Biol., 163, 143, https://doi.org/10.1007/s00227-016-2913-z, 2016.
Meyer, H. K., Roberts, E. M., Rapp, H. T., and Davies, A. J.: Spatial patterns of arctic sponge ground fauna and demersal fish are detectable in autonomous underwater vehicle (AUV) imagery, Deep-Sea Res. Pt. I, 153, 103137, https://doi.org/10.1016/j.dsr.2019.103137, 2019.
Miatta, M. and Snelgrove, P. V. R.: Benthic nutrient fluxes in deep-sea sediments within the Laurentian Channel MPA (eastern Canada): The relative roles of macrofauna, environment, and sea pen octocorals, Deep-Sea Res. Pt. I, 178, 103655, https://doi.org/10.1016/j.dsr.2021.103655, 2021.
Michna, P. and Woods, M.: RNetCDF: Interface to “NetCDF” Datasets, CRAN [code], https://doi.org/10.32614/CRAN.package.RNetCDF, 2019.
Mienis, F., Duineveld, G. C. A., Davies, A. J., Ross, S. W., Seim, H., Bane, J., and van Weering, T. C. E.: The influence of near-bed hydrodynamic conditions on cold-water corals in the Viosca Knoll area, Gulf of Mexico, Deep-Sea Res. Pt. I, 60, 32–45, https://doi.org/10.1016/j.dsr.2011.10.007, 2012.
Morganti, T. M., Slaby, B. M., de Kluijver, A., Busch, K., Hentschel, U., Middelburg, J. J., Grotheer, H., Mollenhauer, G., Dannheim, J., Rapp, H. T., Purser, A., and Boetius, A.: Giant sponge grounds of Central Arctic seamounts are associated with extinct seep life, Nat. Commun., 13, 638, https://doi.org/10.1038/s41467-022-28129-7, 2022.
Morrison, K. M., Meyer, H. K., Roberts, E. M., Rapp, H. T., Colaço, A., and Pham, C. K.: The First Cut Is the Deepest: Trawl Effects on a Deep-Sea Sponge Ground Are Pronounced Four Years on, Front. Mar. Sci., 7, https://doi.org/10.3389/fmars.2020.605281, 2020.
Müller, K. and Wickham, H.: tibble: Simple Data Frames, CRAN [code], https://doi.org/10.32614/CRAN.package.tibble, 2023.
Murillo, F., Kenchington, E., Tompkins, G., Beazley, L., Baker, E., Knudby, A., and Walkusz, W.: Sponge assemblages and predicted archetypes in the eastern Canadian Arctic, Mar. Ecol. Prog. Ser., 597, 115–135, https://doi.org/10.3354/meps12589, 2018.
Murillo, F. J., Muñoz, P. D., Cristobo, J., Ríos, P., González, C., Kenchington, E., and Serrano, A.: Deep-sea sponge grounds of the Flemish Cap, Flemish Pass and the Grand Banks of Newfoundland (Northwest Atlantic Ocean): Distribution and species composition, Mar. Biol. Res., 8, 842–854, https://doi.org/10.1080/17451000.2012.682583, 2012.
Myers, R. A., Akenhead, S. A., and Drinkwater, K.: The influence of Hudson Bay runoff and ice-melt on the salinity of the inner Newfoundland Shelf, Atmos.-Ocean, 28, 241–256, https://doi.org/10.1080/07055900.1990.9649377, 1990.
Neuwirth, E.: RColorBrewer: ColorBrewer Palettes, CRAN [code], https://doi.org/10.32614/CRAN.package.RColorBrewer, 2014.
Newton, P. P., Lampitt, R. S., Jickells, T. D., King, P., and Boutle, C.: Temporal and spatial variability of biogenic particles fluxes during the JGOFS northeast Atlantic process studies at 47° N, 20° W, Deep-Sea Res. Pt. I, 41, 1617–1642, https://doi.org/10.1016/0967-0637(94)90065-5, 1994.
Pedersen, T. L.: patchwork: The Composer of Plots, CRAN [code], https://doi.org/10.32614/CRAN.package.patchwork, 2019.
Petrie, B., Akenhead, S. A., Lazier, J., and Loder, J.: The cold intermediate layer on the Labrador and Northeast Newfoundland Shelves, 1978–86, No. 12, NAFO Science Council Studies, 57–69, 1988.
Pham, C. K., Murillo, F. J., Lirette, C., Maldonado, M., Colaço, A., Ottaviani, D., and Kenchington, E.: Removal of deep-sea sponges by bottom trawling in the Flemish Cap area: conservation, ecology and economic assessment, Sci. Rep., 9, 15843, https://doi.org/10.1038/s41598-019-52250-1, 2019.
Pile, A. J. and Young, C. M.: The natural diet of a hexactinellid sponge: Benthic–pelagic coupling in a deep-sea microbial food web, Deep-Sea Res. Pt. I, 53, 1148–1156, https://doi.org/10.1016/j.dsr.2006.03.008, 2006.
Polunin, N. V. C., Morales-Nin, B., Pawsey, W. E., Cartes, J. E., Pinnegar, J. K., and Moranta, J.: Feeding relationships in Mediterranean bathyal assemblages elucidated by stable nitrogen and carbon isotope data, Mar. Ecol. Prog. Ser., 220, 13–23, https://doi.org/10.3354/meps220013, 2001.
Puerta, P., Johnson, C., Carreiro-Silva, M., Henry, L.-A., Kenchington, E., Morato, T., Kazanidis, G., Rueda, J. L., Urra, J., Ross, S., Wei, C.-L., González-Irusta, J. M., Arnaud-Haond, S., and Orejas, C.: Influence of Water Masses on the Biodiversity and Biogeography of Deep-Sea Benthic Ecosystems in the North Atlantic, Front. Mar. Sci., 7, 239, https://doi.org/10.3389/fmars.2020.00239, 2020.
R Core Team: R: A Language and Environment for Statistical Computing, R Foundation for Statistical Computing, Vienna, Austria, URL https://www.R-project.org/ (last access: 3 December 2024), 2019.
Radax, R., Rattei, T., Lanzen, A., Bayer, C., Rapp, H. T., Urich, T., and Schleper, C.: Metatranscriptomics of the marine sponge Geodia barretti: tackling phylogeny and function of its microbial community, Environ. Microb., 14, 1308–1324, https://doi.org/10.1111/j.1462-2920.2012.02714.x, 2012.
Ricketts, N. B., Trask, P. D., Smith, E. H., Soule, F. M., and Mosby, O.: The “Marion” expedition to Davis Strait and Baffin Bay: Under direction of the United States Coast Guard, 1928, Scientific results: pt.1. Washington, U.S. Govt. Print. Off, 1931–1937, https://doi.org/10.5962/bhl.title.10182, 1931.
Rivkin, R. B., Legendre, L., Deibel, D., Tremblay, J.-É., Klein, B., Crocker, K., Roy, S., Silverberg, N., Lovejoy, C., Mesplé, F., Romero, N., Anderson, M. R., Matthews, P., Savenkoff, C., Vézina, A., Therriault, J.-C., Wesson, J., Bérubé, C., and Ingram, R. G.: Vertical Flux of Biogenic Carbon in the Ocean: Is There Food Web Control?, Science, 272, 1163–1166, https://doi.org/10.1126/science.272.5265.1163, 1996.
Rix, L., de Goeij, J. M., Mueller, C. E., Struck, U., Middelburg, J. J., van Duyl, F. C., Al-Horani, F. A., Wild, C., Naumann, M. S., and van Oevelen, D.: Coral mucus fuels the sponge loop in warm- and cold-water coral reef ecosystems, Sci. Rep., 6, 18715, https://doi.org/10.1038/srep18715, 2016.
Roberts, E. M., Mienis, F., Rapp, H. T., Hanz, U., Meyer, H. K., and Davies, A. J.: Oceanographic setting and short-timescale environmental variability at an Arctic seamount sponge ground, Deep-Sea Res. Pt. I, 138, 98–113, https://doi.org/10.1016/j.dsr.2018.06.007, 2018.
Robertson, L. M., Hamel, J.-F., and Mercier, A.: Feeding in deep-sea demosponges: Influence of abiotic and biotic factors, Deep-Sea Res. Pt. I, 127, 49–56, https://doi.org/10.1016/j.dsr.2017.07.006, 2017.
Rooks, C., Fang, J. K.-H., Mørkved, P. T., Zhao, R., Rapp, H. T., Xavier, J. R., and Hoffmann, F.: Deep-sea sponge grounds as nutrient sinks: denitrification is common in boreo-Arctic sponges, Biogeosciences, 17, 1231–1245, https://doi.org/10.5194/bg-17-1231-2020, 2020.
Roy, V., Iken, K., and Archambault, P.: Environmental Drivers of the Canadian Arctic Megabenthic Communities, PLOS ONE, 9, e100900, https://doi.org/10.1371/journal.pone.0100900, 2014.
Ryan, J. A. and Ulrich, J. M.: xts: eXtensible Time Series, CRAN [code], https://doi.org/10.32614/CRAN.package.xts, 2024.
Schläppy, M.-L., Weber, M., Mendola, D., Hoffmann, F., and de Beer, D.: Heterogeneous oxygenation resulting from active and passive flow in two Mediterranean sponges, Dysida avara and Chondrosia reniformis, Limnol. Oceanogr., 55, 1289–1300, https://doi.org/10.4319/lo.2010.55.3.1289, 2010.
Sherwood, O. A., Heikoop, J. M., Scott, D. B., Risk, M. J., Guilderson, T. P., and McKinney, R. A.: Stable isotopic composition of deep-sea gorgonian corals Primnoa spp.: a new archive of surface processes, Mar. Ecol. Prog. Ser., 301, 135–148, https://doi.org/10.3354/meps301135, 2005.
Sherwood, O. A., Jamieson, R. E., Edinger, E. N., and Wareham, V. E.: Stable C and N isotopic composition of cold-water corals from the Newfoundland and Labrador continental slope: Examination of trophic, depth and spatial effects, Deep-Sea Res. Pt. I, 55, 1392–1402, https://doi.org/10.1016/j.dsr.2008.05.013, 2008.
Sherwood, O. A., Davin, S. H., Lehmann, N., Buchwald, C., Edinger, E. N., Lehmann, M. F., and Kienast, M.: Stable isotope ratios in seawater nitrate reflect the influence of Pacific water along the northwest Atlantic margin, Biogeosciences, 18, 4491–4510, https://doi.org/10.5194/bg-18-4491-2021, 2021.
Shimeta, J. and Jumars, P. A.: Physical mechanisms and rates of particle capture by suspension feeders, Oceanogr. Mar. Biol., ISSN 0078-3218, 191–257, 1991.
Shumway, R. H., Stoffer, D. S., and Stoffer, D. S.: Time series analysis and its applications, Springer, https://doi.org/10.1007/978-3-319-52452-8, 2000.
Sigman, D. M., Karsh, K. L., and Casciotti, K. L.: Nitrogen Isotopes in the Ocean, in: Encyclopedia of Ocean Sciences, Elsevier Ltd, 40–54, https://doi.org/10.1016/B978-012374473-9.00632-9, 2009.
signal developers: signal: Signal processing, CRAN [code], https://CRAN.R-project.org/package=signal, last access: 1 December 2023.
St. Laurent, L., Stringer, S., Garrett, C., and Perrault-Joncas, D.: The generation of internal tides at abrupt topography, Deep-Sea Res. Pt. I, 50, 987–1003, https://doi.org/10.1016/S0967-0637(03)00096-7, 2003.
Stoffer, D.: astsa: Applied Statistical Time Series Analysis, CRAN [code], https://doi.org/10.32614/CRAN.package.astsa, 2020.
Straneo, F. and Saucier, F.: The outflow from Hudson Strait and its contribution to the Labrador Current, Deep-Sea Res. Pt. I, 55, 926–946, https://doi.org/10.1016/j.dsr.2008.03.012, 2008.
Sutcliffe Jr., W. H., Loucks, R. H., Drinkwater, K. F., and Coote, A. R.: Nutrient Flux onto the Labrador Shelf from Hudson Strait and its Biological Consequences, Can. J. Fish. Aquat. Sci., 40, 1692–1701, https://doi.org/10.1139/f83-196, 1983.
Thomson, D. H.: Marine Benthos in the Eastern Canadian High Arctic: Multivariate Analyses of Standing Crop and Community Structure, Arctic, 35, 61–74, 1982.
Tremblay, J.-É., Gratton, Y., Carmack, E. C., Payne, C. D., and Price, N. M.: Impact of the large-scale Arctic circulation and the North Water Polynya on nutrient inventories in Baffin Bay, J. Geophys. Res.-Oceans, 107, 26-1–26-14, https://doi.org/10.1029/2000JC000595, 2002.
Turner, J. T.: Zooplankton fecal pellets, marine snow, phytodetritus and the ocean's biological pump, Prog. Oceanogr., 130, 205–248, https://doi.org/10.1016/j.pocean.2014.08.005, 2015.
Vacelet, J. and Donadey, C.: Electron microscope study of the association between some sponges and bacteria, J. Exp. Mar. Biol. Ecol., 30, 301–314, https://doi.org/10.1016/0022-0981(77)90038-7, 1977.
Vander Zanden, M. J. and Rasmussen, J. B.: Variation in δ15N and δ13C trophic fractionation: Implications for aquatic food web studies, Limnol. Oceanogr., 46, 2061–2066, https://doi.org/10.4319/lo.2001.46.8.2061, 2001.
van der Kaaden, A.-S., van Oevelen, D., Mohn, C., Soetaert, K., Rietkerk, M., van de Koppel, J., and Gerkema, T.: Resemblance of the global depth distribution of internal-tide generation and cold-water coral occurrences, Ocean Sci., 20, 569–587, https://doi.org/10.5194/os-20-569-2024, 2024.
van Duyl, F., Hegeman, J., Hoogstraten, A., and Maier, C.: Dissolved carbon fixation by sponge–microbe consortia of deep water coral mounds in the northeastern Atlantic Ocean, Mar. Ecol. Prog. Ser., 358, 137–150, https://doi.org/10.3354/meps07370, 2008.
van Duyl, F. C., Lengger, S. K., Schouten, S., Lundälv, T., van Oevelen, D., and Müller, C. E.: Dark CO 2 fixation into phospholipid-derived fatty acids by the cold-water coral associated sponge Hymedesmia (Stylopus) coriacea (Tisler Reef, NE Skagerrak), Mar. Biol. Res., 1–17, https://doi.org/10.1080/17451000.2019.1704019, 2020.
Vaughan, D. and Dancho, M.: tibbletime: Time Aware Tibbles, CRAN [code], https://doi.org/10.32614/CRAN.package.tibbletime, 2020.
Vieira, R. P., Bett, B. J., Jones, D. O. B., Durden, J. M., Morris, K. J., Cunha, M. R., Trueman, C. N., and Ruhl, H. A.: Deep-sea sponge aggregations (Pheronema carpenteri) in the Porcupine Seabight (NE Atlantic) potentially degraded by demersal fishing, Prog. Oceanogr., 183, 102189, https://doi.org/10.1016/j.pocean.2019.102189, 2020.
Vogel, S.: Current-induced flow through living sponges in nature, P. Natl. Acad. Sci. USA, 74, 2069–2071, https://doi.org/10.1073/pnas.74.5.2069, 1977.
White, M.: Comparison of near seabed currents at two locations in the Porcupine Sea Bight–implications for benthic fauna, J. Mar. Biol. Assoc. UK, 83, 683–686, https://doi.org/10.1017/S0025315403007641h, 2003.
Whitney, F., Conway, K., Thomson, R., Barrie, V., Krautter, M., and Mungov, G.: Oceanographic habitat of sponge reefs on the Western Canadian Continental Shelf, Cont. Shelf Res., 25, 211–226, https://doi.org/10.1016/j.csr.2004.09.003, 2005.
Wickham, H.: Reshaping Data with the reshape Package, J. Stat. Softw., 21, 1–20, 2007.
Wickham, H.: ggplot2: Elegant Graphics for Data Analysis, Springer-Verlag New York, https://doi.org/10.1007/978-0-387-98141-3, 2016.
Wickham, H. and Bryan, J.: readxl: Read Excel Files, CRAN [code], https://doi.org/10.32614/CRAN.package.readxl, 2019.
Wilkinson, C. R., Garrone, R., Vacelet, J., and Smith, D. C.: Marine sponges discriminate between food bacteria and bacterial symbionts: electron microscope radioautography and in situ evidence, P. Roy. Soc. Lond. B, 220, 519–528, https://doi.org/10.1098/rspb.1984.0018, 1984.
Witte, U., Brattegard, T., Graf, G., and Springer, B.: Particle capture and deposition by deep-sea sponges from the Norwegian-Greenland Sea, Mar. Ecol. Prog. Ser., 154, 241–252, https://doi.org/10.3354/meps154241, 1997.
Wu, Y., Peterson, I. K., Tang, C. C. L., Platt, T., Sathyendranath, S., and Fuentes-Yaco, C.: The impact of sea ice on the initiation of the spring bloom on the Newfoundland and Labrador Shelves, J. Plankton Res., 29, 509–514, https://doi.org/10.1093/plankt/fbm035, 2007.
Wurz, E., Beazley, L., MacDonald, B., Kenchington, E., Rapp, H. T., and Osinga, R.: The Hexactinellid Deep-Water Sponge Vazella pourtalesii (Schmidt, 1870) (Rossellidae) Copes With Temporarily Elevated Concentrations of Suspended Natural Sediment, Front. Mar. Sci., 8, https://doi.org/10.3389/fmars.2021.611539, 2021.
Xie, Y.: knitr: A General-Purpose Package for Dynamic Report Generation in R, https://doi.org/10.32614/CRAN.package.knitr, 2020.
Yahel, G., Whitney, F., Reiswig, H. M., Eerkes-Medrano, D. I., and Leys, S. P.: In situ feeding and metabolism of glass sponges (Hexactinellida, Porifera) studied in a deep temperate fjord with a remotely operated submersible, Limnol. Oceanogr., 52, 428–440, https://doi.org/10.4319/lo.2007.52.1.0428, 2007.
Yashayaev, I.: Hydrographic changes in the Labrador Sea, 1960–2005, Prog. Oceanogr., 73, 242–276, https://doi.org/10.1016/j.pocean.2007.04.015, 2007.
Yashayaev, I.: Intensification and shutdown of deep convection in the Labrador Sea were caused by changes in atmospheric and freshwater dynamics, Commun. Earth Environ., 5, 1–23, https://doi.org/10.1038/s43247-024-01296-9, 2024.
Yashayaev, I. and Loder, J. W.: Further intensification of deep convection in the Labrador Sea in 2016, Geophys. Res. Lett., 44, 1429–1438, https://doi.org/10.1002/2016GL071668, 2017.
Short summary
Deep-sea sponge grounds are distributed globally and are considered hotspots of biological diversity and biogeochemical cycling. To date, little is known about the environmental constraints that control where deep-sea sponge grounds occur and what conditions favour high sponge biomass. Here, we characterize oceanographic conditions at two contrasting sponge grounds. Our results imply that sponges and associated fauna benefit from strong tidal currents and favourable regional ocean currents.
Deep-sea sponge grounds are distributed globally and are considered hotspots of biological...
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