Articles | Volume 17, issue 4
https://doi.org/10.5194/bg-17-865-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/bg-17-865-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 Feb 2020
Research article |
| 20 Feb 2020
Alpha and beta diversity patterns of polychaete assemblages across the nodule province of the eastern Clarion-Clipperton Fracture Zone (equatorial Pacific)
Ifremer, Centre Bretagne, REM EEP, Laboratoire Environnement Profond,
ZI de la Pointe du Diable, CS 10070, 29280 Plouzané, France
Pedro Martínez Arbizu
German Centre for Marine Biodiversity Research (DZMB), Senckenberg am Meer, 26382 Wilhelmshaven, Germany
Ifremer, Centre Bretagne, REM EEP, Laboratoire Environnement Profond,
ZI de la Pointe du Diable, CS 10070, 29280 Plouzané, France
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Saskia Brix, Karen J. Osborn, Stefanie Kaiser, Sarit B. Truskey, Sarah M. Schnurr, Nils Brenke, Marina Malyutina, and Pedro Martinez Arbizu
Biogeosciences, 17, 6163–6184, https://doi.org/10.5194/bg-17-6163-2020, https://doi.org/10.5194/bg-17-6163-2020, 2020
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The Clarion–Clipperton Fracture Zone (CCZ) located in the Pacific is commercially the most important area of proposed manganese nodule mining. Extraction of this will influence the life and distribution of small deep-sea invertebrates like peracarid crustaceans, of which >90 % are undescribed species new to science. We are doing a species delimitation approach as baseline for an ecological interpretation of species distribution and discuss the results in light of future deep-sea conservation.
Daphne Cuvelier, Pedro A. Ribeiro, Sofia P. Ramalho, Daniel Kersken, Pedro Martinez Arbizu, and Ana Colaço
Biogeosciences, 17, 2657–2680, https://doi.org/10.5194/bg-17-2657-2020, https://doi.org/10.5194/bg-17-2657-2020, 2020
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Polymetallic nodule mining will remove hard substrata from the abyssal deep-sea floor. The only neighbouring ecosystems featuring hard substratum are seamounts, and their inhabiting fauna could aid in recovery post-mining. Nevertheless, first observations of seamount megafauna were very different from nodule-associated megafauna and showed little overlap. The possible uniqueness of these ecosystems implies that they should be included in management plans for the conservation of biodiversity.
Freija Hauquier, Lara Macheriotou, Tania N. Bezerra, Great Egho, Pedro Martínez Arbizu, and Ann Vanreusel
Biogeosciences, 16, 3475–3489, https://doi.org/10.5194/bg-16-3475-2019, https://doi.org/10.5194/bg-16-3475-2019, 2019
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Future mining operations in the deep sea provide a source of scientific uncertainty and call for detailed study of the ecosystem. We investigated one of the most diverse and abundant taxa present in deep-sea sediments, nematodes, and demonstrate the importance of sediment attributes for their communities. Especially species that are less common and have a limited spatial distribution will be vulnerable to mining-induced changes. Our findings can serve as a reference for future impact studies.
M. Portail, K. Olu, E. Escobar-Briones, J. C. Caprais, L. Menot, M. Waeles, P. Cruaud, P. M. Sarradin, A. Godfroy, and J. Sarrazin
Biogeosciences, 12, 5455–5479, https://doi.org/10.5194/bg-12-5455-2015, https://doi.org/10.5194/bg-12-5455-2015, 2015
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The absence of biogeographic barrier between seep and vent ecosystems in the Guaymas Basin offers the opportunity to assess the role of environmental conditions in the distribution of macrofaunal communities. Our results showed that community structure was primarily shaped by common abiotic factors. In addition, a high number of common species were shared, suggesting frequent connections between the two ecosystems. Overall, this study supports the hypothesis of a continuum among vents and seeps.
Related subject area
Biodiversity and Ecosystem Function: Marine
Unique benthic foraminiferal communities (stained) in diverse environments of sub-Antarctic fjords, South Georgia
Upwelled plankton community modulates surface bloom succession and nutrient availability in a natural plankton assemblage
First phytoplankton community assessment of the Kong Håkon VII Hav, Southern Ocean, during austral autumn
Early life stages of a Mediterranean coral are vulnerable to ocean warming and acidification
Mediterranean seagrasses as carbon sinks: methodological and regional differences
Contrasting vertical distributions of recent planktic foraminifera off Indonesia during the southeast monsoon: implications for paleoceanographic reconstructions
The onset of the spring phytoplankton bloom in the coastal North Sea supports the Disturbance Recovery Hypothesis
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
Spatial changes in community composition and food web structure of mesozooplankton across the Adriatic basin (Mediterranean Sea)
Predicting mangrove forest dynamics across a soil salinity gradient using an individual-based vegetation model linked with plant hydraulics
Will daytime community calcification reflect reef accretion on future, degraded coral reefs?
Modeling polar marine ecosystem functions guided by bacterial physiological and taxonomic traits
Quantifying functional consequences of habitat degradation on a Caribbean coral reef
Enhanced chlorophyll-a concentration in the wake of Sable Island, eastern Canada, revealed by two decades of satellite observations: a response to grey seal population dynamics?
Population dynamics and reproduction strategies of planktonic foraminifera in the open ocean
The Bouraké semi-enclosed lagoon (New Caledonia) – a natural laboratory to study the lifelong adaptation of a coral reef ecosystem to extreme environmental conditions
Atypical, high-diversity assemblages of foraminifera in a mangrove estuary in northern Brazil
Permanent ectoplasmic structures in deep-sea Cibicides and Cibicidoides taxa – long-term observations at in situ pressure
Ideas and perspectives: Ushering the Indian Ocean into the UN Decade of Ocean Science for Sustainable Development (UNDOSSD) through marine ecosystem research and operational services – an early career's take
Persistent effects of sand extraction on habitats and associated benthic communities in the German Bight
Spatial patterns of ectoenzymatic kinetics in relation to biogeochemical properties in the Mediterranean Sea and the concentration of the fluorogenic substrate used
A 2-decade (1988–2009) record of diatom fluxes in the Mauritanian coastal upwelling: impact of low-frequency forcing and a two-step shift in the species composition
Review and syntheses: Impacts of turbidity flows on deep-sea benthic communities
Ideas and perspectives: When ocean acidification experiments are not the same, repeatability is not tested
The effect of the salinity, light regime and food source on carbon and nitrogen uptake in a benthic foraminifer
Changes in population depth distribution and oxygen stratification are involved in the current low condition of the eastern Baltic Sea cod (Gadus morhua)
Effects of spatial variability on the exposure of fish to hypoxia: a modeling analysis for the Gulf of Mexico
Plant genotype determines biomass response to flooding frequency in tidal wetlands
Factors controlling the competition between Phaeocystis and diatoms in the Southern Ocean and implications for carbon export fluxes
Characterization of particle-associated and free-living bacterial and archaeal communities along the water columns of the South China Sea
Adult life strategy affects distribution patterns in abyssal isopods – implications for conservation in Pacific nodule areas
Diversity and distribution of nitrogen fixation genes in the oxygen minimum zones of the world oceans
Structure and function of epipelagic mesozooplankton and their response to dust deposition events during the spring PEACETIME cruise in the Mediterranean Sea
Distribution of planktonic foraminifera in the subtropical South Atlantic: depth hierarchy of controlling factors
Technical note: Estimating light-use efficiency of benthic habitats using underwater O2 eddy covariance
Ocean acidification reduces growth and grazing impact of Antarctic heterotrophic nanoflagellates
Dynamics of environmental conditions during the decline of a Cymodocea nodosa meadow
Megafauna community assessment of polymetallic-nodule fields with cameras: platform and methodology comparison
A meta-analysis on environmental drivers of marine phytoplankton C : N : P
Spatial and temporal variability in the response of phytoplankton and prokaryotes to B-vitamin amendments in an upwelling system
Biogeography and community structure of abyssal scavenging Amphipoda (Crustacea) in the Pacific Ocean
Are seamounts refuge areas for fauna from polymetallic nodule fields?
Ocean deoxygenation and copepods: coping with oxygen minimum zone variability
Unexpected high abyssal ophiuroid diversity in polymetallic nodule fields of the northeast Pacific Ocean and implications for conservation
Population dynamics of modern planktonic foraminifera in the western Barents Sea
Foraminiferal community response to seasonal anoxia in Lake Grevelingen (the Netherlands)
Light availability modulates the effects of warming in a marine N2 fixer
SiR-actin-labelled granules in foraminifera: patterns, dynamics, and hypotheses
Dimensions of marine phytoplankton diversity
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
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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.
Michael Lintner, Bianca Lintner, Wolfgang Wanek, Nina Keul, and Petra Heinz
Biogeosciences, 18, 1395–1406, https://doi.org/10.5194/bg-18-1395-2021, https://doi.org/10.5194/bg-18-1395-2021, 2021
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Foraminifera are unicellular marine organisms that play an important role in the marine element cycle. Changes of environmental parameters such as salinity or temperature have a significant impact on the faunal assemblages. Our experiments show that changes in salinity immediately influence the foraminiferal activity. Also the light regime has a significant impact on carbon or nitrogen processing in foraminifera which contain no kleptoplasts.
Michele Casini, Martin Hansson, Alessandro Orio, and Karin Limburg
Biogeosciences, 18, 1321–1331, https://doi.org/10.5194/bg-18-1321-2021, https://doi.org/10.5194/bg-18-1321-2021, 2021
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In the past 20 years the condition of the eastern Baltic cod has dropped, with large implications for the fishery. Our results show that simultaneously the cod population has moved deeper while low-oxygenated waters detrimental for cod growth have become shallower. Cod have thus dwelled more in detrimental waters, explaining the drop in its condition. This study, using long-term fish and hydrological monitoring data, evidences the impact of deoxygenation on fish biology and fishing.
Elizabeth D. LaBone, Kenneth A. Rose, Dubravko Justic, Haosheng Huang, and Lixia Wang
Biogeosciences, 18, 487–507, https://doi.org/10.5194/bg-18-487-2021, https://doi.org/10.5194/bg-18-487-2021, 2021
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The hypoxic zone is an area of low dissolved oxygen (DO) in the Gulf of Mexico. Fish can be killed by exposure to hypoxia and can be negatively impacted by exposure to low, nonlethal DO concentrations (sublethal DO). We found that high sublethal area resulted in higher exposure and DO variability had a small effect on exposure. There was a large variation in exposure among individuals, which when combined with spatial variability of DO, can result in an underestimation of exposure when averaged.
Svenja Reents, Peter Mueller, Hao Tang, Kai Jensen, and Stefanie Nolte
Biogeosciences, 18, 403–411, https://doi.org/10.5194/bg-18-403-2021, https://doi.org/10.5194/bg-18-403-2021, 2021
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By conducting a flooding experiment with two genotypes of the salt-marsh grass Elymus athericus, we show considerable differences in biomass response to flooding within the same species. As biomass production plays a major role in sedimentation processes and thereby salt-marsh accretion, we emphasise the importance of taking intraspecific differences into account when evaluating ecosystem resilience to accelerated sea level rise.
Cara Nissen and Meike Vogt
Biogeosciences, 18, 251–283, https://doi.org/10.5194/bg-18-251-2021, https://doi.org/10.5194/bg-18-251-2021, 2021
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Using a regional Southern Ocean ecosystem model, we find that the relative importance of Phaeocystis and diatoms at high latitudes is controlled by iron and temperature variability, with light levels controlling the seasonal succession in coastal areas. Yet, biomass losses via aggregation and grazing matter as well. We show that the seasonal succession of Phaeocystis and diatoms impacts the seasonality of carbon export fluxes with ramifications for nutrient cycling and food web dynamics.
Jiangtao Li, Lingyuan Gu, Shijie Bai, Jie Wang, Lei Su, Bingbing Wei, Li Zhang, and Jiasong Fang
Biogeosciences, 18, 113–133, https://doi.org/10.5194/bg-18-113-2021, https://doi.org/10.5194/bg-18-113-2021, 2021
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Few studies have focused on the particle-attached (PA) and free-living (FL) microbes of the deep ocean. Here we determined PA and FL microbial communities along depth profiles of the SCS. PA and FL fractions accommodated divergent microbial compositions, and most of them are potentially generalists with PA and FL dual lifestyles. A potential vertical connectivity between surface-specific microbes and those in the deep ocean was indicated, likely through microbial attachment to sinking particles.
Saskia Brix, Karen J. Osborn, Stefanie Kaiser, Sarit B. Truskey, Sarah M. Schnurr, Nils Brenke, Marina Malyutina, and Pedro Martinez Arbizu
Biogeosciences, 17, 6163–6184, https://doi.org/10.5194/bg-17-6163-2020, https://doi.org/10.5194/bg-17-6163-2020, 2020
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The Clarion–Clipperton Fracture Zone (CCZ) located in the Pacific is commercially the most important area of proposed manganese nodule mining. Extraction of this will influence the life and distribution of small deep-sea invertebrates like peracarid crustaceans, of which >90 % are undescribed species new to science. We are doing a species delimitation approach as baseline for an ecological interpretation of species distribution and discuss the results in light of future deep-sea conservation.
Amal Jayakumar and Bess B. Ward
Biogeosciences, 17, 5953–5966, https://doi.org/10.5194/bg-17-5953-2020, https://doi.org/10.5194/bg-17-5953-2020, 2020
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Diversity and community composition of nitrogen-fixing microbes in the three main oxygen minimum zones of the world ocean were investigated using nifH clone libraries. Representatives of three main clusters of nifH genes were detected. Sequences were most diverse in the surface waters. The most abundant OTUs were affiliated with Alpha- and Gammaproteobacteria. The sequences were biogeographically distinct and the dominance of a few OTUs was commonly observed in OMZs in this (and other) studies.
Guillermo Feliú, Marc Pagano, Pamela Hidalgo, and François Carlotti
Biogeosciences, 17, 5417–5441, https://doi.org/10.5194/bg-17-5417-2020, https://doi.org/10.5194/bg-17-5417-2020, 2020
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The impact of Saharan dust deposition events on the Mediterranean Sea ecosystem was studied during a basin-scale survey (PEACETIME cruise, May–June 2017). Short-term responses of the zooplankton community were observed after episodic dust deposition events, highlighting the impact of these events on productivity up to the zooplankton level in the poorly fertilized pelagic ecosystems of the southern Mediterranean Sea.
Douglas Lessa, Raphaël Morard, Lukas Jonkers, Igor M. Venancio, Runa Reuter, Adrian Baumeister, Ana Luiza Albuquerque, and Michal Kucera
Biogeosciences, 17, 4313–4342, https://doi.org/10.5194/bg-17-4313-2020, https://doi.org/10.5194/bg-17-4313-2020, 2020
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We observed that living planktonic foraminifera had distinct vertically distributed communities across the Subtropical South Atlantic. In addition, a hierarchic alternation of environmental parameters was measured to control the distribution of planktonic foraminifer's species depending on the water depth. This implies that not only temperature but also productivity and subsurface processes are signed in fossil assemblages, which could be used to perform paleoceanographic reconstructions.
Karl M. Attard and Ronnie N. Glud
Biogeosciences, 17, 4343–4353, https://doi.org/10.5194/bg-17-4343-2020, https://doi.org/10.5194/bg-17-4343-2020, 2020
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Light-use efficiency defines the ability of primary producers to convert sunlight energy to primary production. This report provides a framework to compute hourly and daily light-use efficiency using underwater eddy covariance, a recent technological development that produces habitat-scale rates of primary production for many different habitat types. The approach, tested on measured flux data, provides a useful means to compare habitat productivity across time and space.
Stacy Deppeler, Kai G. Schulz, Alyce Hancock, Penelope Pascoe, John McKinlay, and Andrew Davidson
Biogeosciences, 17, 4153–4171, https://doi.org/10.5194/bg-17-4153-2020, https://doi.org/10.5194/bg-17-4153-2020, 2020
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Our study showed how ocean acidification can exert both direct and indirect influences on the interactions among trophic levels within the microbial loop. Microbial grazer abundance was reduced at CO2 concentrations at and above 634 µatm, while microbial communities increased in abundance, likely due to a reduction in being grazed. Such changes in predator–prey interactions with ocean acidification could have significant effects on the food web and biogeochemistry in the Southern Ocean.
Mirjana Najdek, Marino Korlević, Paolo Paliaga, Marsej Markovski, Ingrid Ivančić, Ljiljana Iveša, Igor Felja, and Gerhard J. Herndl
Biogeosciences, 17, 3299–3315, https://doi.org/10.5194/bg-17-3299-2020, https://doi.org/10.5194/bg-17-3299-2020, 2020
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The response of Cymodocea nodosa to environmental changes was reported during a 15-month period. The meadow decline was triggered in spring by the simultaneous reduction of available light in the water column and the creation of anoxic conditions in the rooted area. This disturbance was critical for the plant since it took place during its recruitment phase when metabolic needs are maximal and stored reserves minimal. The loss of such habitat-forming seagrass is a major environmental concern.
Timm Schoening, Autun Purser, Daniel Langenkämper, Inken Suck, James Taylor, Daphne Cuvelier, Lidia Lins, Erik Simon-Lledó, Yann Marcon, Daniel O. B. Jones, Tim Nattkemper, Kevin Köser, Martin Zurowietz, Jens Greinert, and Jose Gomes-Pereira
Biogeosciences, 17, 3115–3133, https://doi.org/10.5194/bg-17-3115-2020, https://doi.org/10.5194/bg-17-3115-2020, 2020
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Seafloor imaging is widely used in marine science and industry to explore and monitor areas of interest. The selection of the most appropriate imaging gear and deployment strategy depends on the target application. This paper compares imaging platforms like autonomous vehicles or towed camera frames and different deployment strategies of those in assessing the megafauna abundance of polymetallic-nodule fields. The deep-sea mining industry needs that information for robust impact monitoring.
Tatsuro Tanioka and Katsumi Matsumoto
Biogeosciences, 17, 2939–2954, https://doi.org/10.5194/bg-17-2939-2020, https://doi.org/10.5194/bg-17-2939-2020, 2020
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We conducted an extensive literature survey (meta-analysis) on how the C : N : P ratio varies with change in key environmental drivers. We found that the expected reduction in nutrients and warming under the future climate change scenario is likely to result in increased C : P and C : N of marine phytoplankton. Further, our findings highlight the greater stoichiometric plasticity of eukaryotes over prokaryotes, which provide us insights on how to understand and model plankton.
Vanessa Joglar, Antero Prieto, Esther Barber-Lluch, Marta Hernández-Ruiz, Emilio Fernández, and Eva Teira
Biogeosciences, 17, 2807–2823, https://doi.org/10.5194/bg-17-2807-2020, https://doi.org/10.5194/bg-17-2807-2020, 2020
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Coastal marine ecosystems are among the most ecologically and economically productive areas providing a large fraction of ecosystem goods and services to human populations, and B vitamins have long been considered important growth factors for phytoplankton. Our findings indicate that the responses of microbial plankton to B-vitamin supply are mainly driven by the bacterial community composition and that microbial plankton in this area seems to be well adapted to cope with B-vitamin shortage.
Tasnim Patel, Henri Robert, Cedric D'Udekem D'Acoz, Koen Martens, Ilse De Mesel, Steven Degraer, and Isa Schön
Biogeosciences, 17, 2731–2744, https://doi.org/10.5194/bg-17-2731-2020, https://doi.org/10.5194/bg-17-2731-2020, 2020
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Exploitation of deep-sea resources in one of the largest ecosystems on the planet has rendered research of its biodiversity more urgent than ever before. We investigated the known habitats and connectivity of deep-sea scavenging amphipods and obtained important knowledge about several species. We also demonstrated that a long-term disturbance experiment has possibly reduced amphipod biodiversity. These data and further sampling expeditions are instrumental for formulating sustainable policies.
Daphne Cuvelier, Pedro A. Ribeiro, Sofia P. Ramalho, Daniel Kersken, Pedro Martinez Arbizu, and Ana Colaço
Biogeosciences, 17, 2657–2680, https://doi.org/10.5194/bg-17-2657-2020, https://doi.org/10.5194/bg-17-2657-2020, 2020
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Polymetallic nodule mining will remove hard substrata from the abyssal deep-sea floor. The only neighbouring ecosystems featuring hard substratum are seamounts, and their inhabiting fauna could aid in recovery post-mining. Nevertheless, first observations of seamount megafauna were very different from nodule-associated megafauna and showed little overlap. The possible uniqueness of these ecosystems implies that they should be included in management plans for the conservation of biodiversity.
Karen F. Wishner, Brad Seibel, and Dawn Outram
Biogeosciences, 17, 2315–2339, https://doi.org/10.5194/bg-17-2315-2020, https://doi.org/10.5194/bg-17-2315-2020, 2020
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Increasing deoxygenation and oxygen minimum zone expansion are consequences of global warming. Copepod species had different vertical distribution strategies and physiologies associated with oxygen profile variability (0–1000 m). Species (1) changed vertical distributions and maximum abundance depth, (2) shifted diapause depth, (3) changed diel vertical migration depths, or (4) changed epipelagic depth range in the aerobic mixed layer. Present-day variability helps predict future scenarios.
Magdalini Christodoulou, Timothy O'Hara, Andrew F. Hugall, Sahar Khodami, Clara F. Rodrigues, Ana Hilario, Annemiek Vink, and Pedro Martinez Arbizu
Biogeosciences, 17, 1845–1876, https://doi.org/10.5194/bg-17-1845-2020, https://doi.org/10.5194/bg-17-1845-2020, 2020
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Unexpectedly high diversity was revealed in areas licenced for polymetallic nodule mining exploration in the Pacific Ocean. For the first time, a comprehensive reference library including 287 novel ophiuroid sequences allocated to 43 species was produced. Differences in food availability along the nodule province of CCZ were reflected in the biodiversity patterns observed. The APEI3's dissimilarity with the exploration contract areas questions its ability to serve as a biodiversity reservoir.
Julie Meilland, Hélène Howa, Vivien Hulot, Isaline Demangel, Joëlle Salaün, and Thierry Garlan
Biogeosciences, 17, 1437–1450, https://doi.org/10.5194/bg-17-1437-2020, https://doi.org/10.5194/bg-17-1437-2020, 2020
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This study reports on planktonic foraminifera (PF) diversity and distribution in the Barents Sea. The species Globigerinita uvula and Turborotalita quinqueloba dominate the water column while surface sediments are dominated by Neogloboquadrina pachyderma. We hypothesize the unusual dominance of G. uvula in the water to be a seasonal signal or a result of climate forcing. Size-normalized-protein concentrations of PF show a northward decrease, suggesting biomass to vary with the environment.
Julien Richirt, Bettina Riedel, Aurélia Mouret, Magali Schweizer, Dewi Langlet, Dorina Seitaj, Filip J. R. Meysman, Caroline P. Slomp, and Frans J. Jorissen
Biogeosciences, 17, 1415–1435, https://doi.org/10.5194/bg-17-1415-2020, https://doi.org/10.5194/bg-17-1415-2020, 2020
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The paper presents the response of benthic foraminiferal communities to seasonal absence of oxygen coupled with the presence of hydrogen sulfide, considered very harmful for several living organisms.
Our results suggest that the foraminiferal community mainly responds as a function of the duration of the adverse conditions.
This knowledge is especially useful to better understand the ecology of benthic foraminifera but also in the context of palaeoceanographic interpretations.
Xiangqi Yi, Fei-Xue Fu, David A. Hutchins, and Kunshan Gao
Biogeosciences, 17, 1169–1180, https://doi.org/10.5194/bg-17-1169-2020, https://doi.org/10.5194/bg-17-1169-2020, 2020
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Combined effects of warming and light intensity were estimated in N2-fixing cyanobacterium Trichodesmium. Its physiological responses to warming were significantly modulated by light, with growth peaking at 27 °C under the light-saturating condition but being non-responsive across the range of 23–31 °C under the light-limiting condition. Light shortage also weakened the acclimation ability of Trichodesmium to warming, making light-limited Trichodesmium more sensitive to acute temperature change.
Jan Goleń, Jarosław Tyszka, Ulf Bickmeyer, and Jelle Bijma
Biogeosciences, 17, 995–1011, https://doi.org/10.5194/bg-17-995-2020, https://doi.org/10.5194/bg-17-995-2020, 2020
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We studied the organisation and dynamics of actin in foraminifera. Actin is one of the key structural proteins in most lifeforms. Our investigations show that in foraminifera it forms small granules, around 1 µm in diameter, that display rapid movement. This granularity is unusual in comparison to other organisms. We suppose that these granules are most likely involved in the formation of all types of pseudopods responsible for movement, food capturing, biomineralisation, and other functions.
Stephanie Dutkiewicz, Pedro Cermeno, Oliver Jahn, Michael J. Follows, Anna E. Hickman, Darcy A. A. Taniguchi, and Ben A. Ward
Biogeosciences, 17, 609–634, https://doi.org/10.5194/bg-17-609-2020, https://doi.org/10.5194/bg-17-609-2020, 2020
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Phytoplankton are an essential component of the marine food web and earth's carbon cycle. We use observations, ecological theory and a unique trait-based ecosystem model to explain controls on patterns of marine phytoplankton biodiversity. We find that different dimensions of diversity (size classes, biogeochemical functional groups, thermal norms) are controlled by a disparate combination of mechanisms. This may explain why previous studies of phytoplankton diversity had conflicting results.
Cited articles
Amon, D. J., Ziegler, A. F., Dahlgren, T. G., Glover, A. G., Goineau, A.,
Gooday, A. J., Wiklund, H., and Smith, C. R.: Insights into the abundance
and diversity of abyssal megafauna in a polymetallic-nodule region in the
eastern Clarion-Clipperton Zone, Sci. Rep.-UK, 6, 30492, https://doi.org/10.1038/srep30492,
2016.
Baselga, A.: Partitioning the turnover and nestedness components of beta
diversity, Global Ecol. Biogeogr., 19, 134–143, https://doi.org/10.1111/j.1466-8238.2009.00490.x, 2010.
Błażewicz, M., Jóźwiak, P., Menot, L., and Pabis, K.: High
species richness and unique composition of the tanaidacean communities
associated with five areas in the Pacific polymetallic nodule fields, Prog.
Oceanogr., 176, 102141, https://doi.org/10.1016/j.pocean.2019.102141, 2019.
Bober, S., Brix, S., Riehl, T., Schwentner, M., and Brandt, A.: Does the
Mid-Atlantic Ridge affect the distribution of abyssal benthic crustaceans
across the Atlantic Ocean?, Deep-Sea Res. Pt. II, 148,
91–104, https://doi.org/10.1016/j.dsr2.2018.02.007, 2018.
Böggemann, M.: Polychaetes (Annelida) of the abyssal SE Atlantic, Org.
Divers. Evol., 9, 251–428, 2009.
Bonifácio, P. and Menot, L.: New genera and species from the Equatorial
Pacific provide phylogenetic insights into deep-sea Polynoidae (Annelida),
Zool. J. Linn. Soc.-Lond., 185, 555–635, https://doi.org/10.1093/zoolinnean/zly063, 2019.
Bonifácio, P., Neal, L., and Menot, L.: Diversity of polynoids
(Polynoidae: Polychaeta) from Pacific and Southern Oceans, 12th
International Polychaete Conference, National Museum Wales, Cardiff, 2016.
Bonifácio, P., Neal, L., Omnes, E., Baptiste, F., Dahlgren, T. G., and
Menot, L.: The polychaete fauna of the Clarion-Clipperton Fracture Zone from
boxcore samples during SONNE cruise SO239, PANGAEA,
https://doi.org/10.1594/PANGAEA.902860, 2019.
Bonifácio, P.: Polychaete sequences from Clarion-Clipperton Fracture Zone sampled with box-corer during SONNE cruise SO239, BOLD, https://doi.org/10.5883/DS-GKG001, 2019.
Borcard, D., Gillet, F., and Legendre, P. (Eds.): Numerical ecology with R,
Springer-Verlag, New York, USA, 2011.
Boudreau, B. P. and Scott, M. R.: A model for the diffusion-controlled
growth of deep-sea manganese nodules, Am. J. Sci., 278, 903–929, https://doi.org/10.2475/ajs.278.7.903, 1978.
Brandt, A., Błażewicz-Paszkowycz, M., Bamber, R.,
Mühlenhardt-Siegel, U., Malyutina, M., Kaiser, S., De Broyer, C., and
Havermans, C.: Are there widespread peracarid species in the deep sea
(Crustacea: Malacostraca)?, Pol. Polar Res., 33, 139–162,
2012.
Brasier, M. J., Wiklund, H., Neal, L., Jeffreys, R., Linse, K., Ruhl, H.,
and Glover, A. G.: DNA barcoding uncovers cryptic diversity in 50 % of
deep-sea Antarctic polychaetes, R. Soc. Open Sci., 3, 160432, https://doi.org/10.1098/rsos.160432, 2016.
Burnham, K. P. and Overton, W. S.: Robust estimation of population size
when capture probabilities vary among animals, Ecology, 60, 927–936, https://doi.org/10.2307/1936861, 1979.
Carr, C. M., Hardy, S. M., Brown, T. M., Macdonald, T. A., and Hebert, P. D.
N.: A tri-oceanic perspective: DNA barcoding reveals geographic structure
and cryptic diversity in Canadian polychaetes, PLoS ONE, 6, e22232, https://doi.org/10.1371/journal.pone.0022232, 2011.
Chao, A.: Nonparametric estimation of the number of classes in a population,
Scand. J. Stat., 11, 265–270, 1984.
Chen, H. and Boutros, P. C.: VennDiagram: a package for the generation of highly-customizable Venn and Euler diagrams in R, BMC Bioinformatics, 12, 3327–3327, https://doi.org/10.1186/1471-2105-12-35, 2011.
Chiu, C. H., Wang, Y. T., Walther, B. A., and Chao, A.: An improved
nonparametric lower bound of species richness via a modified good-turing
frequency formula, Biometrics, 70, 671–682, https://doi.org/10.1111/biom.12200, 2014.
Coddington, J. A., Agnarsson, I., Miller, J. A., Kuntner, M., and Hormiga,
G.: Undersampling bias: the null hypothesis for singleton species in
tropical arthropod surveys, J. Anim. Ecol., 78, 573–584,
https://doi.org/10.1111/j.1365-2656.2009.01525.x, 2009.
Cohen, B. L., Gawthrop, A., and Cavalier-Smith, T.: Molecular phylogeny of
brachiopods and phoronids based on nuclear–encoded small subunit ribosomal
RNA gene sequences, Philos. T. R. Soc. B., 353,
2039–2061, https://doi.org/10.1098/rstb.1998.0351, 1998.
Conover, W. J. and Iman, R. L.: On multiple-comparisons procedures, Los
Alamos Scientific Laboratory, New Mexico LA-7677-MS, 1979.
De Smet, B., Pape, E., Riehl, T., Bonifácio, P., Colson, L., and
Vanreusel, A.: The community structure of deep-sea macrofauna associated
with polymetallic nodules in the eastern part of the Clarion-Clipperton
Fracture Zone, Front. Mar. Sci., 103, 4, https://doi.org/10.3389/fmars.2017.00103, 2017.
Dray, S., Bauman, D., Blanchet, G., Borcard, D., Clappe, S., Guenard, G.,
Jombart, T., Larocque, G., Legendre, P., Madi, N., and Wagner, H. H.:
adespatial: Multivariate Multiscale Spatial Analysis, R package version 0.3-7, available at: https://CRAN.R-project.org/package=adespatial (last access: 12 February 2020), 2019.
Edgar, R. C.: MUSCLE: multiple sequence alignment with high accuracy and
high throughput, Nucleic Acids Res., 32, 1792–1797, https://doi.org/10.1093/nar/gkh340,
2004.
Fauchald, K.: Benthic polychaetous annelids from deep water off western
Mexico and adjacent areas in the eastern Pacific Ocean, Univ. of Southern
California, Los Angeles, 1972.
Fauchald, K.: The polychaete worms. Definitions and keys to the orders, families and genera, Natural History Museum of Los Angeles County, Science Series 28, 188 pp., 1977.
Folmer, O., Black, M., Hoeh, W. R., Lutz, R. A., and Vrijenhoek, R. C.: DNA
primers for amplification of mitochondrial cytochrome c oxidase subunit I
from diverse metazoan invertebrates, Mol. Mar. Biol. Biotech., 3,
294–299, 1994.
Friedrichs, M., Graf, G., and Springer, B.: Skimming flow induced over a
simulated polychaete tube lawn at low population densities, Mar. Ecol. Prog.
Ser., 192, 219–228, 2000.
Gage, J. D.: Diversity in deep-sea benthic macrofauna: the importance of
local ecology, the larger scale, history and the Antarctic, Deep-Sea Res.
Pt. II, 51, 1689–1708, 2004.
Gage, J. D. and Tyler, P. A.: Deep-sea biology: a natural history of
organisms at the deep-sea floor, Cambridge University Press, Cambridge,
U.K., 504 pp., 1991.
Gallagher, E. D.: COMPAH documentation, University of Massachusetts, available at:
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.9.1334&rep=rep1&type=pdf (last access: 12 February 2020), Boston, 65, 1996.
Global Sea Mineral Resources NV: Small-scale testing of nodule collector
components on the seafloor of the Clarion-Clipperton Fracture Zone and its
environmental impact, Environmental Impact Statement, DEME, 2018.
Glover, A., Dahlgren, T., Taboada, S., Paterson, G., Wiklund, H.,
Waeschenbach, A., Cobley, A., Martínez, P., Kaiser, S., Schnurr, S.,
Khodami, S., Raschka, U., Kersken, D., Stuckas, H., Menot, L.,
Bonifácio, P., Vanreusel, A., Macheriotou, L., Cunha, M., Hilário,
A., Rodrigues, C., Colaço, A., Ribeiro, P., Błażewicz, M., Gooday,
A., Jones, D., Billett, D., Goineau, A., Amon, D., Smith, C., Patel, T.,
McQuaid, K., Spickermann, R., and Brager, S.: The London workshop on the
biogeography and connectivity of the Clarion-Clipperton Zone, Res. Ideas
Outcomes, 2, e10528, https://doi.org/10.3897/rio.2.e10528, 2016.
Glover, A. G. and Smith, C. R.: The deep-sea floor: current status and
prospects of anthropogenic change by the year 2025, Environ. Conserv., 30,
219–241, 2003.
Glover, A. G., Smith, C. R., Paterson, G. L. J., Wilson, G. D. F., Hawkins,
L., and Sheader, M.: Polychaete species diversity in the central Pacific
abyss: local and regional patterns, and relationships with productivity,
Mar. Ecol.-Prog. Ser., 240, 157–170, https://doi.org/10.3354/meps240157, 2002.
Gollner, S., Kaiser, S., Menzel, L., Jones, D. O. B., Brown, A., Mestre, N.
C., van Oevelen, D., Menot, L., Colaço, A., Canals, M., Cuvelier, D.,
Durden, J. M., Gebruk, A., Egho, G. A., Haeckel, M., Marcon, Y., Mevenkamp,
L., Morato, T., Pham, C. K., Purser, A., Sanchez-Vidal, A., Vanreusel, A.,
Vink, A., and Martínez Arbizu, P.: Resilience of benthic deep-sea fauna
to mining activities, Mar. Environ. Res., 129, 76–101,
https://doi.org/10.1016/j.marenvres.2017.04.010, 2017.
Gotelli, N. J. and Colwell, R. K.: Quantifying biodiversity: Procedures and
pitfalls in the measurement and comparison of species richness, Ecol. Lett.,
4, 379–391, 2001.
Graf, G. and Rosenberg, R.: Bioresuspension and biodeposition: a review, J.
Marine Syst., 11, 269–278, https://doi.org/10.1016/S0924-7963(96)00126-1,
1997.
Grassle, J. F. and Maciolek, N. J.: Deep-sea species richness: regional and
local diversity estimates from quantitative bottom samples, Am. Nat., 139,
313–341, 1992.
Greinert, J.: Swath sonar multibeam EM122 bathymetry during SONNE cruise
SO239 with links to raw data files, PANGAEA, https://doi.org/10.1594/PANGAEA.859456, 2016.
Guggolz, T., Lins, L., Meißner, K., and Brandt, A.: Biodiversity and
distribution of polynoid and spionid polychaetes (Annelida) in the Vema
Fracture Zone, tropical North Atlantic, Deep-Sea Res. Pt. II, 148, 54–63, https://doi.org/10.1016/j.dsr2.2017.07.013, 2018.
Guggolz, T., Meißner, K., Schwentner, M., and Brandt, A.: Diversity and
distribution of Laonice species (Annelida: Spionidae) in the tropical North
Atlantic and Puerto Rico trench, Sci. Rep.-UK, 9, 9260, https://doi.org/10.1038/s41598-019-45807-7, 2019.
Guggolz, T., Meißner, K., Schwentner, M., Dahlgren, T. G., Wiklund, H.,
Bonifácio, P., and Brandt, A.: High diversity and pan-oceanic
distribution of deep-sea polychaetes: Prionospio and Aurospio (Annelida: Spionidae) in the
Atlantic and Pacific Ocean, Org. Divers. Evol., https://doi.org/10.1007/s13127-020-00430-7, 2020.
Hall, C. E. and Gurnis, M.: Strength of fracture zones from their
bathymetric and gravitational evolution, J. Geophys. Res.-Sol. Ea., 110, B01402,
https://doi.org/10.1029/2004JB003312, 2005.
Hannides, A. and Smith, C.: The Northeastern Pacific Abyssal Plain, in:
Biogeochemistry of Marine Systems, edited by: Black, K. S. and Shimmield,
G. B., Blackwell Publishing Ltd, 208–237, 2003.
Hauquier, F., Macheriotou, L., Bezerra, T. N., Egho, G., Martínez Arbizu, P., and Vanreusel, A.:
Distribution of free-living marine nematodes in the Clarion–Clipperton Zone: implications for future deep-sea mining scenarios, Biogeosciences, 16, 3475–3489, https://doi.org/10.5194/bg-16-3475-2019, 2019.
Havermans, C., Sonet, G., d'Udekem d'Acoz, C., Nagy, Z. T., Martin, P.,
Brix, S., Riehl, T., Agrawal, S., and Held, C.: Genetic and morphological
divergences in the cosmopolitan deep-sea amphipod Eurythenes gryllus reveal a diverse abyss
and a bipolar species, PLoS ONE, 8, e74218, https://doi.org/10.1371/journal.pone.0074218,
2013.
Hebert, P. D., Ratnasingham, S., and deWaard, J. R.: Barcoding animal life:
cytochrome c oxidase subunit 1 divergences among closely related species,
Proc. R. Soc. Lond. B, 270, S96–S99, https://doi.org/10.1098/rsbl.2003.0025, 2003b.
Hebert, P. D. N., Cywinska, A., Ball, S. L., and deWaard, J. R.: Biological
identifications through DNA barcodes, P. R. Soc. Lond. B,
270, 313–321, https://doi.org/10.1098/rspb.2002.2218, 2003a.
Hessler, R. R. and Jumars, P. A.: Abyssal community analysis from replicate
box cores in the central North Pacific, Deep-Sea Res., 21, 185–209, 1974.
Hein, J. R. and Petersen, S.: The geology of Manganese nodules, in: Deep
Sea Minerals: Manganese Nodules, a physical, biological, environmental, and
technical review, 1B, edited by: Baker, E. and Beaudoin, Y., Secretariat of
the Pacific Community (SPC), Noumea, New Caledonia, 7–18, 2013.
Hollander, M. and Wolfe, D. A.: Nonparametric statistical methods, John
Wiley & Sons, New York, 1973.
Holm, S.: A Simple Sequentially Rejective Multiple Test Procedure, Scand. J.
Stat., 6, 65–70, 1979.
Hurlbert, S. H.: The nonconcept of species diversity: a critique and
alternative parameters, Ecology, 52, 577–586, 1971.
Hutchings, P.: Biodiversity and functioning of polychaetes in benthic
sediments, Biodivers. Conserv., 7, 1133–1145, https://doi.org/10.1023/a:1008871430178, 1998.
ISBA/25/C/WP.1: Draft regulations on exploitation of mineral resources in
the Area. International Seabed Authority, Kingston, Jamaica, available at:
https://ran-s3.s3.amazonaws.com/isa.org.jm/s3fs-public/files/documents/isba_25_c_wp1-e.pdf (last access: 12 February 2020), 2019.
Janssen, A., Kaiser, S., Meißner, K., Brenke, N., Menot, L., and
Martínez Arbizu, P.: A reverse taxonomic approach to assess macrofaunal
distribution patterns in abyssal Pacific polymetallic nodule fields, PLoS
ONE, 10, e0117790, https://doi.org/10.1371/journal.pone.0117790, 2015.
Jones, D. O. B., Kaiser, S., Sweetman, A. K., Smith, C. R., Menot, L., Vink,
A., Trueblood, D., Greinert, J., Billett, D. S. M., Arbizu, P. M.,
Radziejewska, T., Singh, R., Ingole, B., Stratmann, T., Simon-Lledó, E.,
Durden, J. M., and Clark, M. R.: Biological responses to disturbance from
simulated deep-sea polymetallic nodule mining, PLoS ONE, 12, e0171750, https://doi.org/10.1371/journal.pone.0171750, 2017.
Jumars, P. A., Dorgan, K. M., and Lindsay, S. M.: Diet of worms emended: an
update of polychaete feeding guilds, Annu. Rev. Mar. Sci., 7, 497–520,
https://doi.org/10.1146/annurev-marine-010814-020007, 2015.
Katoh, K., Misawa, K., Kuma, K., and Miyata, T.: MAFFT: a novel method for
rapid multiple sequence alignment based on fast Fourier transform, Nucleic.
Acids. Res., 30, 3059–3066, 2002.
Kindt, R. and Coe, R.: Tree diversity analysis. A manual and software for
common statistical methods for ecological and biodiversity studies, World
Agroforestry Centre (ICRAF), Nairobi, Kenya, 2005.
Legendre, P. and Legendre, L.: Chapter 11 – Canonical analysis, in:
Developments in Environmental Modelling, edited by: Legendre, P. and
Legendre, L., Elsevier, 625–710, 2012.
Legendre, P.: Interpreting the replacement and richness difference
components of beta diversity, Global Ecol. Biogeogr., 23, 1324–1334, https://doi.org/10.1111/geb.12207, 2014.
Levin, L. A., Mengerink, K., Gjerde, K. M., Rowden, A. A., Van Dover, C. L.,
Clark, M. R., Ramirez-Llodra, E., Currie, B., Smith, C. R., Sato, K. N.,
Gallo, N., Sweetman, A. K., Lily, H., Armstrong, C. W., and Brider, J.:
Defining “serious harm” to the marine environment in the context of
deep-seabed mining, Mar. Policy, 74, 245–259,
https://doi.org/10.1016/j.marpol.2016.09.032, 2016.
Lins, L., da Silva, M. C., Neres, P., Esteves, A. M., and Vanreusel, A.:
Testing deep-sea biodiversity paradigms on abyssal nematode genera and
Acantholaimus species, Deep-Sea Res. Pt. II, 148, 208–222,
https://doi.org/10.1016/j.dsr2.2016.12.005, 2018.
Lodge, M., Johnson, D., Le Gurun, G., Wengler, M., Weaver, P., and Gunn, V.:
Seabed mining: International Seabed Authority environmental management plan
for the Clarion–Clipperton Zone. A partnership approach, Mar. Policy, 49,
66–72, https://doi.org/10.1016/j.marpol.2014.04.006, 2014.
Magalhães, W. F. and Bailey-Brock, J. H.: Particle selection and
feeding behaviour in two cirratulid polychaetes, J. Mar. Biol. Assoc. UK,
97, 1069–1074, https://doi.org/10.1017/s0025315417000522, 2017.
Martínez Arbizu, P. and Haeckel, M.: RV SONNE Fahrtbericht/Cruise
Report SO239: EcoResponse Assessing the Ecology, Connectivity and Resilience
of Polymetallic Nodule Field Systems, Balboa (Panama) – Manzanillo (Mexico)
11 March–30 April 2015, GEOMAR Report, N. Ser. 025, GEOMAR Helmholtz-Zentrum
für Ozeanforschung, Kiel, Germany, 2015.
May, R. M.: Bottom up for the oceans, Nature, 357, 278–279, 1992.
McClain, C. R. and Schlacher, T. A.: On some hypotheses of diversity of
animal life at great depths on the sea floor, Mar. Ecol., 36, 849–872, https://doi.org/10.1111/maec.12288, 2015.
Medlin, L., Elwood, H. J., Stickel, S., and Sogin, M. L.: The
characterization of enzymatically amplified eukaryotic 16S-like rRNA-coding
regions, Gene, 71, 491–499, https://doi.org/10.1016/0378-1119(88)90066-2,
1988.
Melo, A. S.: A critique of the use of jackknife and related non-parametric
techniques to estimate species richness, Community Ecol., 5, 149–157, 2004.
Menot, L.: ness: Hypergeometric standardization and probabilistic measures
of similarity for community ecology. R package version 0.1.0, Zenodo,
https://doi.org/10.5281/zenodo.3254750, 2019.
Menzel, L., George, K. H., and Arbizu, P. M.: Submarine ridges do not
prevent large-scale dispersal of abyssal fauna: A case study of
Mesocletodes (Crustacea, Copepoda, Harpacticoida), Deep-Sea Res. Pt. I, 58, 839–864, https://doi.org/10.1016/j.dsr.2011.05.008, 2011.
Miljutin, D. M., Miljutina, M. A., Arbizu, P. M., and Galéron, J.:
Deep-sea nematode assemblage has not recovered 26 years after experimental
mining of polymetallic nodules (Clarion-Clipperton Fracture Zone, Tropical
Eastern Pacific), Deep-Sea Res. Pt. I, 58, 885–897,
2011.
Miljutina, M., Miljutin, D., Mahatma, R., and Galéron, J.: Deep-sea
nematode assemblages of the Clarion-Clipperton Nodule Province (Tropical
North-Eastern Pacific), Mar. Biodivers., 40, 1–15, 2010.
Moore, J. C. and de Ruiter, P. C.: Invertebrates in detrital food webs
along gradients of productivity, in: 2000, edited by: Colman, D. C. and
Hendrix, P. F., CABI Publishing, 161–184, 2000.
Morgan, C. L.: Resource estimates of the Clarion-Clipperton manganese nodule
deposits, in: Handbook of marine mineral deposits, edited by: Cronan, D. S.,
CRC Press, Boca Raton, 145–170, 2000.
Murray, J. and Renard, A. F.: Report on the Scientific Results of the Voyage
of HMS Challenger During the Years 1873-76: Deep-Sea Deposits, Hodges,
Figgis, & Company, Dublin, 1891.
Nygren, A. and Sundberg, P.: Phylogeny and evolution of reproductive modes
in Autolytinae (Syllidae, Annelida), Mol. Phylogenet. Evol., 29, 235–249,
https://doi.org/10.1016/S1055-7903(03)00095-2, 2003.
Oebius, H. U., Becker, H. J., Rolinski, S., and Jankowski, J. A.:
Parametrization and evaluation of marine environmental impacts produced by
deep-sea manganese nodule mining, Deep-Sea Res. Pt. II, 48, 3453–3467, https://doi.org/10.1016/S0967-0645(01)00052-2,
2001.
O'Hara, R. B.: Species richness estimators: how many species can dance on
the head of a pin?, J. Anim. Ecol., 74, 375–386, https://doi.org/10.1111/j.1365-2656.2005.00940.x, 2005.
Oksanen, J., Blanchet, F. G., Kindt, R., Legendre, P., Minchin, P. R.,
O'Hara, R. B., Simpson, G. L., Solymos, P., Stevens, M. H. H., and Wagner,
H.: vegan: Community Ecology Package, R package version 2.2-1, available at: http://CRAN.R-project.org/package=vegan (last access: 12 February 2020), 2015.
Palumbi, S. R.: Nucleic acid II: the polymerase chain reaction, in:
Molecular Systematics, edited by: Hillis, D. M., Moritz, G., and Mable, B.,
Sinauer Associates, Sunderland, MA, 1996.
Patel, T., Robert, H., D'Udekem D'Acoz, C., Martens, K., De Mesel, I., Degraer, S., and Schön, I.: Biogeography and community structure of abyssal scavenging Amphipoda (Crustacea) in the Pacific Ocean, Biogeosciences Discuss., https://doi.org/10.5194/bg-2018-347, in review, 2018.
Paterson, G. L. J., Wilson, G. D. F., Cosson, N., and Lamont, P. A.: Hessler
and Jumars (1974) revisited: abyssal polychaete assemblages from the
Atlantic and Pacific, Deep-Sea Res. Pt. II, 45, 225–251, 1998.
Paterson, G. L. J., Neal, L., Altamira, I., Soto, E. H., Smith, C. R.,
Galeron, J., Menot, L., Billett, D. S. M., Cunha, M., and Glover, A. G.: New
Prionospio and Aurospio Species from the Deep Sea (Annelida: Polychaeta), Zootaxa, 4092, 1–32,
2016.
Post, D. M.: The long and short of food-chain length, Trends Ecol. Evol.,
17, 269–277, https://doi.org/10.1016/S0169-5347(02)02455-2, 2002.
Radziejewska, T.: Responses of deep-sea meiobenthic communities to sediment
disturbance simulating effects of polymetallic nodule mining, Int. Rev.
Hydrobiol., 87, 457–477, 2002.
Ramirez-Llodra, E., Brandt, A., Danovaro, R., De Mol, B., Escobar, E., German, C. R., Levin, L. A., Martinez Arbizu, P., Menot, L., Buhl-Mortensen, P., Narayanaswamy, B. E., Smith, C. R., Tittensor, D. P., Tyler, P. A., Vanreusel, A., and Vecchione, M.: Deep, diverse and definitely different: unique attributes of the world's largest ecosystem, Biogeosciences, 7, 2851–2899, https://doi.org/10.5194/bg-7-2851-2010, 2010.
Ratnasingham, S. and Hebert, P. D. N.: bold: The Barcode of Life Data
System (http://www.barcodinglife.org), Mol. Ecol. Notes, 7, 355–364, https://doi.org/10.1111/j.1471-8286.2007.01678.x, 2007.
R Core Team: R: A language and environment for statistical computing, R
Foundation for Statistical Computing, Vienna, Austria, 2018.
Rex, M. A., McClain, C. R., Johnson, N. A., Etter, R. J., Allen, J. A.,
Bouchet, P., and Waren, A.: A source-sink hypothesis for abyssal
biodiversity, Am. Nat., 165, 163–178, 2005.
Riehl, T., Kaiser, S., and Brandt, A.: Vema-TRANSIT – An interdisciplinary
study on the bathymetry of the Vema-Fracture Zone and Puerto Rico Trench as
well as abyssal Atlantic biodiversity, Deep-Sea Res. Pt. II, 148, 1–6, https://doi.org/10.1016/j.dsr2.2018.01.007, 2018a.
Riehl, T., Lins, L., and Brandt, A.: The effects of depth, distance, and the
Mid-Atlantic Ridge on genetic differentiation of abyssal and hadal isopods
(Macrostylidae), Deep-Sea Res. Pt. II, 148, 74–90,
https://doi.org/10.1016/j.dsr2.2017.10.005, 2018b.
Rowe, G. T., Sibuet, M., Deming, J. M., Khripounoff, A., Tietjen, J., Macko,
S. A., and Theroux, R.: “Total” sediment biomass and preliminary estimates
of organic carbon residence time in deep-sea benthos, Mar. Ecol.-Prog. Ser.,
79, 99–114, 1991.
RStudio Team: RStudio: Integrated Development for R. RStudio, Inc, Boston,
MA, 2015.
Simon-Lledó, E., Bett, B. J., Huvenne, V. A. I., Schoening, T., Benoist,
N. M. A., and Jones, D. O. B.: Ecology of a polymetallic nodule occurrence
gradient: Implications for deep-sea mining, Limnol. Oceanogr., 64, 1883–1894, https://doi.org/10.1002/lno.11157, 2019.
Sjölin, E., Erséus, C., and Källersjö, M.: Phylogeny of
Tubificidae (Annelida, Clitellata) based on mitochondrial and nuclear
sequence data, Mol. Phylogenet. Evol., 35, 431–441,
https://doi.org/10.1016/j.ympev.2004.12.018, 2005.
Smith, C. R. and Demopoulos, A. W. J.: The Deep Pacific ocean floor, in:
Ecosystems of the Deep Oceans, edited by: Tyler, P. A., Ecosystem of the
World 28, Elsevier Science, Amsterdam, 179–218, 2003.
Smith, C. R., Berelson, W., Demaster, D. J., Dobbs, F. C., Hammond, D.,
Hoover, D. J., Pope, R. H., and Stephens, M.: Latitudinal variations in
benthic processes in the abyssal equatorial Pacific: control by biogenic
particle flux, Deep-Sea Res. Pt. II, 44, 2295–2317,
https://doi.org/10.1016/S0967-0645(97)00022-2, 1997.
Smith, C. R., De Leo, F. C., Bernardino, A. F., Sweetman, A. K., and Arbizu,
P. M.: Abyssal food limitation, ecosystem structure and climate change,
Trends Ecol. Evol., 23, 518–528, 2008a.
Smith, C. R., Paterson, G. L. D., Lambshead, P. J. D., Glover, A., Rogers,
A. D., Gooday, A. J., Kitazato, H., Sibuet, M., Galéron, J., and Menot,
L.: Biodiversity, species ranges, and gene flow in the abyssal Pacific
nodule province: predicting and managing the impacts of deep seabed mining,
International Seabed Authority, Kingston, Jamaica, 38, 2008b.
Smith, E. P. and van Belle, G.: Nonparametric estimation of species
richness, Biometrics, 40, 119–129, https://doi.org/10.2307/2530750, 1984.
Sokolova, M. N.: Trophic Structure of Abyssal Macrobenthos, in: Adv. Mar.
Biol., edited by: Blaxter, J. H. S., Southward, A. J., Gebruk, A. V.,
Southward, E. C., and Tyler, P. A., Academic Press, 427–525, 1997.
Sternberg, R. W.: Field measurements of the hydrodynamic roughness of the
deep-sea boundary, Deep-Sea Res. Oceanogr. Abstr., 17, 413–420,
https://doi.org/10.1016/0011-7471(70)90056-2, 1970.
Suess, E.: Particle organic carbon flux in the oceans-surface productivity
and oxygen utilization, Nature, 228, 260–263, 1980.
Thiel, H., Schriever, G., Bussau, C. and Borowski, C.: Manganese nodule
crevice fauna, Deep-Sea Res. Pt. 1, 40, 419–423,
https://doi.org/10.1016/0967-0637(93)90012-R, 1993.
Trueblood, D. D., Gallagher, E. D., and Gould, D. M.: Three stages of
seasonal succession on the Savin Hill Cove mudflat, Boston Harbor, Limnol.
Oceanogr., 39, 1440–1454, 1994.
UNCLOS: United Nations Convention on the Law of the Sea, Montego Bay,
Jamaica, In force 16 November 1994, available at: https://www.un.org/depts/los/convention_agreements/convention_overview_convention.htm
(last access: 12 February 2020), 1982.
Van Dover, C. L., Ardron, J. A., Escobar, E., Gianni, M., Gjerde, K. M.,
Jaeckel, A., Jones, D. O. B., Levin, L. A., Niner, H. J., Pendleton, L.,
Smith, C. R., Thiele, T., Turner, P. J., Watling, L., and Weaver, P. P. E.:
Biodiversity loss from deep-sea mining, Nat. Geosci., 10, 464–465, https://doi.org/10.1038/ngeo2983, 2017.
Vanreusel, A., Hilario, A., Ribeiro, P. A., Menot, L., and Arbizu, P. M.:
Threatened by mining, polymetallic nodules are required to preserve abyssal
epifauna, Sci. Rep.-UK, 6, 26808, https://doi.org/10.1038/srep26808, 2016.
Vavrek, M.: fossil: palaeoecological and palaeogeographical analysis tools.
Palaeontol, Electronica, 14, 1T, 2011.
Volkmann, S. E. and Lehnen, F.: Production key figures for planning the
mining of manganese nodules, Mar. Georesour. Geotec., 36, 360–375, https://doi.org/10.1080/1064119X.2017.1319448, 2018.
Volkmann, S. E., Kuhn, T., and Lehnen, F.: A comprehensive approach for a
techno-economic assessment of nodule mining in the deep sea, Miner. Econ.,
31, 319–336, https://doi.org/10.1007/s13563-018-0143-1, 2018.
Volz, J. B., Mogollón, J. M., Geibert, W., Arbizu, P. M., Koschinsky,
A., and Kasten, S.: Natural spatial variability of depositional conditions,
biogeochemical processes and element fluxes in sediments of the eastern
Clarion-Clipperton Zone, Pacific Ocean, Deep-Sea Res. Pt. I, 140, 159–172, https://doi.org/10.1016/j.dsr.2018.08.006, 2018.
Wedding, L. M., Friedlander, A. M., Kittinger, J. N., Watling, L., Gaines,
S. D., Bennett, M., Hardy, S. M., and Smith, C. R.: From principles to
practice: a spatial approach to systematic conservation planning in the deep
sea, P. R. Soc. Lond. B, 280, 20131684, https://doi.org/10.1098/rspb.2013.1684, 2013.
Westberry, T., Behrenfeld, M. J., Siegel, D. A., and Boss, E.: Carbon-based
primary productivity modeling with vertically resolved photoacclimation,
Global Biogeochem. Cy., 22, GB2024, https://doi.org/10.1029/2007gb003078, 2008.
Wilson, G. D. F.: Macrofauna abundance, species diversity and turnover at
three sites in the Clipperton-Clarion Fracture Zone, Mar. Biodivers., 47,
323–347, https://doi.org/10.1007/s12526-016-0609-8, 2017.
WoRMS: World Register of Marine Species, https://doi.org/10.14284/170,
2019.
Yu, O. H., Lee, H.-G., Kim, D., Wi, J. H., Kim, K. H., and Yoo, C. M.:
Characterization of Deep-sea Macrofauna in the Korean Exploration Claim Area
in the Clarion-Clipperton Fracture Zone, Northeastern Pacific Ocean, Ocean
Sci. J., 53, 301–314, https://doi.org/10.1007/s12601-018-0029-8, 2018.
Short summary
The patterns observed in the composition of polychaete assemblages were attributed to variations in food supply at the regional scale and nodule density at the local scale. The high levels of species replacement were mainly driven by rare species, leading to regional species pool estimates between 498 and 240 000 species. The high proportion of singletons seems reflect an under-sampling bias that is currently preventing the assessment of potential biodiversity loss due to nodule mining.
The patterns observed in the composition of polychaete assemblages were attributed to variations...
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