Articles | Volume 13, issue 11
https://doi.org/10.5194/bg-13-3461-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-3461-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
15 Jun 2016
Research article |
| 15 Jun 2016
Long-term macrobioerosion in the Mediterranean Sea assessed by micro-computed tomography
Claudia Färber
CORRESPONDING AUTHOR
Senckenberg am Meer, Abteilung Meeresforschung, Südstrand 40,
26382 Wilhelmshaven, Germany
Jürgen Titschack
Senckenberg am Meer, Abteilung Meeresforschung, Südstrand 40,
26382 Wilhelmshaven, Germany
MARUM, Center for Marine Environmental Sciences, University of Bremen, Leobener Straße, 28359 Bremen, Germany
Christine Hanna Lydia Schönberg
Oceans Institute, University of Western Australia, Crawley, WA
6009, Australia
Western Australian Museum, Welshpool, WA 6106, Australia
Karsten Ehrig
Bundesanstalt für Materialforschung und -prüfung (BAM), Unter
den Eichen 87, 12205 Berlin, Germany
Karin Boos
MARUM, Center for Marine Environmental Sciences, University of Bremen, Leobener Straße, 28359 Bremen, Germany
Daniel Baum
ZIB, Zuse Institute Berlin, Takustraße 7, 14195 Berlin, Germany
Bernhard Illerhaus
Bundesanstalt für Materialforschung und -prüfung (BAM), Unter
den Eichen 87, 12205 Berlin, Germany
Ulla Asgaard
Department of Geography and Geology, University of Copenhagen, 1350 Copenhagen K, Denmark
Richard Granville Bromley
Department of Geography and Geology, University of Copenhagen, 1350 Copenhagen K, Denmark
André Freiwald
Senckenberg am Meer, Abteilung Meeresforschung, Südstrand 40,
26382 Wilhelmshaven, Germany
Max Wisshak
Senckenberg am Meer, Abteilung Meeresforschung, Südstrand 40,
26382 Wilhelmshaven, Germany
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Claudia Färber, Henning Plessow, Simon Mischel, Frederik Kratzert, Nans Addor, Guy Shalev, and Ulrich Looser
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2024-427, https://doi.org/10.5194/essd-2024-427, 2024
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Large-sample datasets are essential in hydrological science to support modelling studies and advance process understanding. Caravan is a community initiative to create a large-sample hydrology dataset of meteorological forcing data, catchment attributes, and discharge data for catchments around the world. This dataset is a subset of hydrological discharge data and station-based watersheds from the Global Runoff Data Centre (GRDC), which are covered by an open data policy.
Claudia Färber, Henning Plessow, Simon Mischel, Frederik Kratzert, Nans Addor, Guy Shalev, and Ulrich Looser
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2024-427, https://doi.org/10.5194/essd-2024-427, 2024
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Large-sample datasets are essential in hydrological science to support modelling studies and advance process understanding. Caravan is a community initiative to create a large-sample hydrology dataset of meteorological forcing data, catchment attributes, and discharge data for catchments around the world. This dataset is a subset of hydrological discharge data and station-based watersheds from the Global Runoff Data Centre (GRDC), which are covered by an open data policy.
Luis Greiffenhagen, Jürgen Titschack, Claudia Wienberg, Haozhuang Wang, and Dierk Hebbeln
EGUsphere, https://doi.org/10.5194/egusphere-2024-2532, https://doi.org/10.5194/egusphere-2024-2532, 2024
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Cold-water coral mounds are large structures on the seabed that are built by corals over thousands of years. They are regarded as carbonate sinks, with a potentially important role in the marine carbon cycle, but more quantitative studies are needed. Using sediment cores, we calculate the amount of carbon that has been stored in two mounds over the last 400 thousand years. We provide the first numbers and show that up to 19 times more carbon is accumulated on mounds than on the common seafloor.
Nicolai Schleinkofer, David Evans, Max Wisshak, Janina Vanessa Büscher, Jens Fiebig, André Freiwald, Sven Härter, Horst R. Marschall, Silke Voigt, and Jacek Raddatz
Biogeosciences, 18, 4733–4753, https://doi.org/10.5194/bg-18-4733-2021, https://doi.org/10.5194/bg-18-4733-2021, 2021
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We have measured the chemical composition of the carbonate shells of the parasitic foraminifera Hyrrokkin sarcophaga in order to test if it is influenced by the host organism (bivalve or coral). We find that both the chemical and isotopic composition is influenced by the host organism. For example strontium is enriched in foraminifera that grew on corals, whose skeleton is built from aragonite, which is naturally enriched in strontium compared to the bivalves' calcite shell.
André Bahr, Monika Doubrawa, Jürgen Titschack, Gregor Austermann, Andreas Koutsodendris, Dirk Nürnberg, Ana Luiza Albuquerque, Oliver Friedrich, and Jacek Raddatz
Biogeosciences, 17, 5883–5908, https://doi.org/10.5194/bg-17-5883-2020, https://doi.org/10.5194/bg-17-5883-2020, 2020
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We explore the sensitivity of cold-water corals (CWCs) to environmental changes utilizing a multiproxy approach on a coral-bearing sediment core from off southeastern Brazil. Our results reveal that over the past 160 kyr, CWCs flourished during glacial high-northern-latitude cold events (Heinrich stadials). These periods were associated with anomalous wet phases on the continent enhancing terrigenous nutrient and organic-matter supply to the continental margin, boosting food supply to the CWCs.
Max Wisshak and Liane Hüne
Foss. Rec., 22, 77–90, https://doi.org/10.5194/fr-22-77-2019, https://doi.org/10.5194/fr-22-77-2019, 2019
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Here, we describe an enigmatic new microfossil that was found encrusting a belemnite from the Middle Jurassic of the Falaises des Vaches Noires in Normandy, France. The organism has produced a conspicuous attachment etching on the belemnite for better adhesion and this trace fossil is new to science as well. Based on morphological criteria and the capacity to bioerode, the new microproblematicum can best be compared to encrusting bryozoans and foraminiferans.
Max Wisshak and Christian Neumann
Foss. Rec., 21, 1–9, https://doi.org/10.5194/fr-21-1-2018, https://doi.org/10.5194/fr-21-1-2018, 2018
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A new bioerosion trace fossil, the rosette-shaped microboring Neodendrina carnelia igen. et isp. n., is described from a giant clam (Tridacna maxima) discovered in Pleistocene to Holocene coral reef deposits of the Egyptian Red Sea coast. The trace was formed as a complex attachment scar after the host had ceased. The biological identity of the trace maker, probably either a benthic foraminiferan or a macrophyte, is discussed.
Martin Bartels, Jürgen Titschack, Kirsten Fahl, Rüdiger Stein, Marit-Solveig Seidenkrantz, Claude Hillaire-Marcel, and Dierk Hebbeln
Clim. Past, 13, 1717–1749, https://doi.org/10.5194/cp-13-1717-2017, https://doi.org/10.5194/cp-13-1717-2017, 2017
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Multi-proxy analyses (i.a., benthic foraminiferal assemblages and sedimentary properties) of a marine record from Woodfjorden at the northern Svalbard margin (Norwegian Arctic) illustrate a significant contribution of relatively warm Atlantic water to the destabilization of tidewater glaciers, especially during the deglaciation and early Holocene (until ~ 7800 years ago), whereas its influence on glacier activity has been fading during the last 2 millennia, enabling glacier readvances.
Max Wisshak, Jürgen Titschack, Wolf-Achim Kahl, and Peter Girod
Foss. Rec., 20, 173–199, https://doi.org/10.5194/fr-20-173-2017, https://doi.org/10.5194/fr-20-173-2017, 2017
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The ongoing technical revolution in non-destructive 3-D visualisation via micro-computed tomography (micro-CT) finds a valuable application in the studies of bioerosion trace fossils, since their three-dimensional architecture lies hidden within hard substrates. Selected examples of such cases are illustrated by reference to bioerosion trace fossils preserved in Late Cretaceous belemnite guards from the European Chalk Province, including the description of two new trace fossil ichnospecies.
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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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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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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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This study used ocean glider data to extend previously established relationships between surface and depth-integrated chlorophyll to an intermittent-oligotrophic continental margin. Relationships were established for stratified summer-transition months, stratified winter months, and mixed water columns. Integrations over twice the euphotic zone depth best captured Deep Chlorophyll Maxima contributing to a seasonal increase in depth-integrated chlorophyll likely relevant to higher trophic levels.
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.
Cited articles
Badde, A. and Illerhaus, B.: Three dimensional computerized microtomography in the analysis of sculpture, Scanning, 30, 16–26, 2008.
Baum, D. and Titschack, J.: Cavity and pore segmentation in 3D images with ambient occlusion, in: Proceedings of the 18th EG/VGTC Conference on Visualization, Groningen, the Netherlands, 6–10 June 2016.
Bavestrello, G., Bonito, M., and Sarà, M.: Influence of depth on the size of sponge spicules, Sci. Mar., 57, 415–420, 1993.
Becker, L. C. and Reaka-Kudla, M. L.: The use of tomography in assessing bioerosion in corals, in: Proceedings of the 8th International Coral Reef Symposium Vol. 2, Smithsonian Tropical Research Institute, Panama, 24–29 June 1996, 1819–1824, 1997.
Beuck, L., Vertino, A., Stepina, E., Karolczak, M., and Pfannkuche, O.: Skeletal response of Lophelia pertusa (Scleractinia) to bioeroding sponge infestation visualised with micro-computed tomography, Facies, 53, 157–176, 2007.
Beuck, L., Wisshak, M., Munnecke, A., and Freiwald, A.: A giant boring in a Silurian stromatoporoid analysed by computer tomography, Acta Palaeontol. Pol., 53, 149–160, 2008.
Blissett, D. J., Pickerill, R. K., and Rigby, J. K.: A new species of boring sponge from the White Limestone Group, Jamaica, Caribb. J. Sci., 42, 247–251, 2006.
Bromley, R. G.: Borings as trace fossils and Entobia cretacea Portlock, as an example, Geol. J., 3, 49–90, 1970.
Bromley, R. G. and D'Alessandro, A.: Bioerosion in the Pleistocene of southern Italy: ichnogenera Caulostrepsis and Maeandropolydora, Riv. Ital. Paleontol. S., 89, 283–309, 1983.
Bromley, R. G. and D'Alessandro, A.: The ichnogenus Entobia from the Miocene, Pliocene and Pleistocene of southern Italy, Riv. Ital. Paleontol. S., 90, 227–296, 1984.
Bromley, R. G. and D'Alessandro, A.: Ichnological study of shallow marine endolithic sponges from the Italian coast, Riv. Ital. Paleontol. S., 95, 279–314, 1989.
Bromley, R. G. and Fürsich, F. T.: Comments on the proposed amendments to the International Code of Zoological Nomenclature regarding ichnotaxa, Z.N. (S.) 1973, B. Zool. Nomencl., 37, 6–10, 1980.
Bromley, R. G. and Schönberg, C. H.: Borings, bodies and ghosts: spicules of the endolithic sponge Aka akis sp. nov. within the boring Entobia cretacea, Cretaceous, England, in: Current Developments in Bioerosion, edited by: Wisshak, M. and Tapanila, L., Springer, Berlin, 235–248, 2008.
Bromley, R. G. and Tendal, O. S.: Example of substrate competition and phobotropism between two clionid sponges, J. Zool. Lond, 169, 151–155, 1973.
Bromley, R. G., Hanken, N.-M., and Asgaard, U.: Shallow marine bioerosion: preliminary results of an experimental study, B. Geol. Soc. Denmark, 38, 85–99, 1990.
Bromley, R. G., Beuck, L., and Ruggiero, E. T.: Endolithic sponge versus terebratulid brachiopod, Pleistocene, Italy: accidental symbiosis, bioclaustration and deformity, in: Current Developments in Bioerosion, edited by: Wisshak, M. and Tapanila, L., Springer, Berlin, 361–368, 2008.
Calcinai, B., Azzini, F., Bavestrello, G., Gaggero, L., and Cerrano, C.: Excavating rates and boring pattern of Cliona albimarginata (Porifera: Clionaidae) in different substrata, in: Porifera Research: Biodiversity, Innovation & Sustainability, Proceedings of the 7th International Sponge Symposium, Búzios, Rio de Janeiro, 7–13 May 2006, 203–210, 2007.
Calcinai, B., Bavestrello, G., Cuttone, G., and Cerrano, C.: Excavating sponges from the Adriatic Sea: description of Cliona adriatica sp. nov. (Demospongiae: Clionaidae) and estimation of its boring activity, J. Mar. Biol. Assoc. UK, 91, 339–346, 2011.
Carballo, J. L., Sanchez-Moyano, J. E., and García-Gómez, J. C.: Taxonomic and ecological remarks on boring sponges (Clionidae) from the Straits of Gibraltar (southern Spain): tentative bioindicators?, Zool. J. Linn. Soc., 112, 407–424, 1994.
Carreiro-Silva, M. and McClanahan, T. R.: Macrobioerosion of dead branching Porites, 4 and 6 years after coral mass mortality, Mar. Ecol.-Prog. Ser., 458, 103–122, 2012.
Chazottes, V., Le Campion-Alsumard, T., Peyrot-Clausade, M., and Cuet, P.: The effects of eutrophication-related alterations to coral reef communities on agents and rates of bioerosion (Reunion Island, Indian Ocean), Coral Reefs, 21, 375–390, 2002.
Christomanos, A. A. and Norton, A. B.: Beiträge zur Kenntnis der Pigmente der Schwämme Aplysina aerophoba und Clione schmidtii, Folia Bioch. et Biol. Graeca, 11, 10–20, 1974.
Corriero, G., Scalera Liaci, L., Ruggiero, D., and Pansini, M.: The sponge community of a semi-submerged Mediterranean cave, Mar. Ecol., 21, 85–96, 2000.
Crook, E. D., Cohen, A. L., Rebolledo-Vieyra, M., Hernandez, L., and Paytan, A.: Reduced calcification and lack of acclimatization by coral colonies growing in areas of persistent natural acidification, P. Natl. Acad. Sci. USA, 110, 11044–11049, 2013.
DeCarlo, T. M., Cohen, A. L., Barkley, H. C., Cobban, Q., Young, C., Shamberger, K. E., Brainard, R. E., and Golbuu, Y.: Coral macrobioerosion is accelerated by ocean acidification and nutrients, Geology, 43, 7–10, 2015.
De Groot, R. A.: Boring sponges (Clinoidae) and their trace fossils from the coast near Rovinj (Yugoslavia), Geol. Mijnbouw, 56, 168–181, 1977.
De Paula, T. S., Zilberberg, C., Hajdu, E., and Lôbo-Hajdu, G.: Morphology and molecules on opposite sides of the diversity gradient: four cryptic species of the Cliona celata (Porifera, Demospongiae) complex in South America revealed by mitochondrial and nuclear markers, Mol. Phylogenet. Evol., 62, 529–541, 2012.
EMODnet Portal for Bathymetry, available at: http://www.emodnet-bathymetry.eu (last access: 6 June 2016), 2015.
Evcen, A., and Çinar, M. E.: Bioeroding sponge species (Porifera) in the Aegean Sea (Eastern Mediterranean), J. Black Sea/Mediterranean Environment, 21, 285–306, 2015.
Fang, J. K. H., Mello-Athayde, M. A., Schönberg, C. H. L., Kline, D. I., Hoegh-Guldberg, O., and Dove, S.: Sponge biomass and bioerosion rates increase under ocean warming and acidification, Glob. Change Biol., 19, 3581–3591, 2013.
Färber, C., Wisshak, M., Pyko, I., Bellou, N., and Freiwald, A.: Effects of water depth, seasonal exposure, and substrate orientation on microbial bioerosion in the Ionian Sea (Eastern Mediterranean), PLoS ONE, 10, e0126495, https://doi.org/10.1371/journal.pone.0126495, 2015.
Feldkamp, L. A., Davis, L. C., and Kress, J. W.: Practical cone-beam algorithm, J. Opt. Soc. Am. A, 1, 612–619, 1984.
Fischer, P. M.: Recherches sur les éponges perforantes fossiles, Nouv. Arch. Mus. Hist. Nat. Paris, 4, 117–173, 1868.
Glynn, P. W.: Bioerosion and coral reef growth: a dynamic balance, in: Life and Death of Coral Reefs, edited by: Birkeland, C., Chapman and Hall, New York, 68–95, 1997.
Grange, J. S., Rybarczyk, H., and Tribollet, A.: The three steps of the carbonate biogenic dissolution process by microborers in coral reefs (New Caledonia), Environ. Sci. Pollut. Res. Int., 22, 13625–13637, 2015.
Grant, R. E.: Notice of a new zoophyte (Cliona celata, Gr.) from the Firth of Forth, Edinburgh New Phil. J., 1, 78–81, 1826.
Hassan, M.: Modification of carbonate substrata by bioerosion and bioaccretion on coral reefs of the Red Sea, Shaker Verlag, Aachen, 1998.
Hoeksema, B. W.: Excavation patterns and spiculae dimensions of the boring sponge Cliona celata from the SW Netherlands, Senck. Marit., 15, 55–85, 1983.
Hutchings, P. A., Kiene, W. E., Cunningham, R. B., and Donnelly, C.: Spatial and temporal patterns of non-colonial boring organisms (polychaetes, sipunculans and bivalve molluscs) in Porites at Lizard Island, Great Barrier Reef, Coral Reefs, 11, 23–31, 1992.
Kennedy, E. V., Perry, C. T., Halloran, P. R., Iglesias-Prieto, R., Schönberg, C. H. L., Wisshak, M., Form, A. U., Carricart-Ganivet, J. P., Fine, M., Eakin, C. M., and Mumby, P. J.: Avoiding coral reef functional collapse requires local and global action, Curr. Biol., 23, 912–918, 2013.
Kiene, W. E.: A model of bioerosion on the Great Barrier Reef, Proceedings of the 6th International Coral Reef Symposium Vol. 3, Townsville, Australia, 8–12 August 1988, 449–454, 1988.
Kiene, W. E. and Hutchings, P. A.: Long-term bioerosion of experimental coral substrates from Lizard Island, Great Barrier Reef, Proceedings of the 7th International Coral Reef Symposium Vol. 1, UOG Station, Guam, 22–27 June 1992, 397–403, 1992.
Kiene, W. E. and Hutchings, P. A.: Bioerosion experiments at Lizard Island, Great Barrier Reef, Coral Reefs, 13, 91–98, 1994.
Le Campion-Alsumard, T.: Les cyanophycées endolithes marines. Systématique, ultrastructure, écologie et biodestruction, Oceanol. Acta, 2, 143–156, 1979.
Leal, C. V., De Paula, T. S., Lôbo-Hajdu, G., Schönberg, C. H. L., and Esteves, E. L.: Morphological and molecular systematics of the “Cliona viridis complex” from south-eastern Brazil, J. Mar. Biol. Assoc. UK, 96, 313–323, 2016.
Lescinsky, H. L., Hill, M., and Hoedt, B. A.: Results of long-term bioerosion study: Belize patch reefs, Proceedings of the 11th International Coral Reef Symposium, Ft. Lauderdale, Florida, 7–11 July 2008, 26–30, 2008.
Neumann, A. C.: Observations on coastal erosion in Bermuda and measurements of the boring rate of the sponge, Cliona lampa, Limnol. Oceanogr., 11, 92–108, 1966.
Osorno, A., Peyrot-Clausade, M., and Hutchings, P. A.: Patterns and rates of erosion in dead Porites across the Great Barrier Reef (Australia) after 2 years and 4 years of exposure, Coral Reefs, 24, 292–303, 2005.
Pari, N., Peyrot-Clausade, M., Le Campion-Alsumard, T., Hutchings, P., Chazottes, V., Golubic, S., Le Campion, J., and Fontaine, M. F.: Bioerosion of experimental substrates on high islands and on atoll lagoons (French Polynesia) after two years of exposure, Mar. Ecol.-Prog. Ser., 166, 119–130, 1998.
Pari, N., Peyrot-Clausade, M., and Hutchings, P. A.: Bioerosion of experimental substrates on high islands and atoll lagoons (French Polynesia) during 5 years of exposure, J. Exp. Mar. Biol. Ecol., 276, 109–127, 2002.
Peyrot-Clausade, M., Le Campion-Alsumard, T., Hutchings, P., LeCampion, J., Payri, C., and Fontaine, M.-F.: Initial bioerosion and bioaccretion on experimental substrates in high island and atoll lagoons (French Polynesia), Oceanol. Acta, 18, 531–541, 1995.
Rasband, W. S.: ImageJ. U. S. National Institutes of Health, Bethesda, Maryland, USA, http://imagej.nih.gov/ij/ (last access: 6 June 2016), 1997–2015.
Reitner, J. and Keupp, H.: The fossil record of the haplosclerid excavating sponge Aka de Laubenfels, in: Fossil and Recent Sponges, edited by: Reitner, J. and Keupp, H., Springer, Berlin, 102–120, 1991.
Ridley, S. O.: Account of the zoological collections made during the surveys of the H. M. S. “Alert” in the Strait of Magellan and on the coast of Patagonia. Spongida, P. Zool. Soc. Lond., 107–139, 1881.
Rosell, D. and Uriz, M.-J.: Cliona viridis (Schmidt, 1862) and Cliona nigricans (Schmidt, 1862) (Porifera, Hadromerida): evidence which shows they are the same species, Ophelia, 33, 45–53, 1991.
Rosell, D. and Uriz, M.-J.: Excavating and endolithic sponge species (Porifera) from the Mediterranean: species descriptions and identification key, Org. Divers. Evol., 2, 55–86, 2002.
Rosell, D., Uriz, M.-J., and Martin, D.: Infestation by excavating sponges on the oyster (Ostrea edulis) populations of the Blanes littoral zone (north-western Mediterranean Sea), J. Mar. Biol. Assoc. UK, 79, 409–413, 1999.
Rützler, K.: The role of burrowing sponges in bioerosion, Oecologia, 19, 203–216, 1975.
Rützler, K. and Bromley, R. G.: Cliona rhodensis, new species (Porifera: Hadromerida) from the Mediterranean, P. Biol. Soc. Wash., 94, 1219–1225, 1981.
Sammarco, P. W. and Risk, M. J.: Large-scale patterns in internal bioerosion of Porites: cross continental shelf trends on the Great Barrier Reef, Mar. Ecol.-Prog. Ser., 59, 145–156, 1990.
Schmidt, O: Die Spongien des adriatischen Meeres, Engelmann, Leipzig, 1862.
Schön, J.: Physical properties of rocks: a workbook, Handbook of Petroleum Exploration and Production, 8, Elsevier, Amsterdam, 2011.
Schönberg, C. H. L.: Estimating the extent of endolithic tissue of a Great Barrier Reef clionid sponge, Senck. Marit, 31, 29–19, 2001.
Schönberg, C. H. L.: A history of sponge erosion: from past myths and hypotheses to recent approaches, in: Current Developments in Bioerosion, edited by: Wisshak, M. and Tapanila, L., Springer, Berlin, 165–202, 2008.
Schönberg, C. H. L. and Shields, G.: Micro-computed tomography for studies on Entobia: transparent substrate versus modern technology, in: Current Developments in Bioerosion, edited by: Wisshak, M. and Tapanila, L., Springer, Berlin, 147–164, 2008.
Schönberg, C. H. L. and Wisshak, M.: Marine bioerosion, in: The Mediterranean Sea, edited by: Goffredo, S. and Dubinsky, Z., Springer, the Netherlands, 49–68, 2014.
Scott, P. J. B., Moser, K. A., and Risk, M. J.: Bioerosion of concrete and limestone by marine organisms: A 13 year experiment from Jamaica, Mar. Pollut. Bull., 19, 219–222, 1988.
Silbiger, N. J., Guadayol, Ò., Thomas, F. I. M., and Donahue, M. J.: Reefs shift from net accretion to net erosion along a natural environmental gradient, Mar. Ecol.-Prog. Ser., 515, 33–44, 2014.
Silbiger, N. J., Guadayol, Ò., Thomas, F. I. M., and Donahue, M. J.: A novel μCT analysis reveals different responses of bioerosion and secondary accretion to environmental variability, PLoS ONE, 11, e0153058, https://doi.org/10.1371/journal.pone.0153058, 2016.
Stalling, D., Westerhof, M., and Hege, H.-C.: Amira: a highly interactive system for visual data analysis, in: The Visualization Handbook, edited by: Hansen, C. D. and Johnson, C. R., Elsevier Butterworth-Heinemann, Burlington, 749–767, 2005.
Titschack, J., Baum, D., De Pol-Holz, R., López Correa, M., Forster, N., Flögel, S., Hebbeln, D., and Freiwald, A.: Aggradation and carbonate accumulation of Holocene Norwegian cold-water coral reefs, Sedimentology, 62, 1873–1898, 2015.
Topsent, E.: Contribution à l'étude des Clionides, Arch. Zool. Exper. Gén., 5, 1–165, 1888.
Tribollet, A. and Golubic, S.: Cross-shelf differences in the pattern and pace of bioerosion of experimental carbonate substrates exposed for 3 years on the northern Great Barrier Reef, Australia, Coral Reefs, 24, 422–434, 2005.
Tribollet, A., Godinot, C., Atkinson, M., and Langdon, C.: Effects of elevated pCO2 on dissolution of coral carbonates by microbial euendoliths, Global Biogeochem. Cy., 23, GB3008, https://doi.org/10.1029/2008GB003286, 2009.
Tribollet, A., Radtke, G., and Golubic, S.: Bioerosion, in: Encyclopedia of Geobiology, edited by: Reitner, J. and Thiel, V., Springer, Dordrecht, 117–134, 2011.
Vacelet, J., Bitar, G., Dailianis, T., Zibrowius, H., and Perez, T.: A large encrusting clionaid sponge in the Eastern Mediterranean Sea, Mar. Ecol, 29, 237–246, 2008.
Vogel, K., Kiene, W. E., Gektidis, M., and Radtke, G.: Scientific results from investigation of microbial borers and bioerosion in reef environments, Göttinger Arb. Geol. Pal., Sb 2, 139–143, 1996.
Vogel, K., Gektidis, M., Golubic, S., Kiene, W. E., and Radtke, G.: Experimental studies on microbial bioerosion at Lee Stocking Island, Bahamas and One Tree Island, Great Barrier Reef, Australia: implications for paleoecological reconstructions, Lethaia, 33, 190–204, 2000.
Wilson, M.: Macroborings and the evolution of marine bioerosion, In: Trace fossils: Concepts, Problems, Prospects, edited by: Milller III, W., Elsevier, Amsterdam, 356–367, 2007.
Wisshak, M.: High-latitude bioerosion: The Kosterfjord experiment, Springer, Berlin, Heidelberg, 2006.
Wisshak, M.: Microbioerosion, in: Trace Fossils as Indicators of Sedimentary Environments, edited by: Knaust, D. and Bromley, R. G., Elsevier, Amsterdam, 213–243, 2012.
Wisshak, M., Form, A., Jakobsen, J., and Freiwald, A.: Temperate carbonate cycling and water mass properties from intertidal to bathyal depths (Azores), Biogeosciences, 7, 2379–2396, https://doi.org/10.5194/bg-7-2379-2010, 2010.
Wisshak, M., Tribollet, A., Golubic, S., Jakobsen, J., and Freiwald, A.: Temperate bioerosion: ichnodiversity and biodiversity from intertidal to bathyal depths (Azores), Geobiology, 9, 492–520, 2011.
Wisshak, M., Schönberg, C. H. L., Form, A., and Freiwald, A.: Ocean acidification accelerates reef bioerosion, PLoS ONE, 7, e45124, https://doi.org/10.1371/journal.pone.0045124, 2012.
Wisshak, M., Schönberg, C. H. L., Form, A., and Freiwald, A.: Effects of ocean acidification and global warming on reef bioerosion–lessons from a clionaid sponge, Aquat. Biol., 19, 111–127, 2013.
Wisshak, M., Schönberg, C. H. L., Form, A., and Freiwald, A.: Sponge bioerosion accelerated by ocean acidification across species and latitudes?, Helgoland Mar. Res., 68, 253–262, 2014.
Xavier, J. R., Rachello-Dolmen, P. G., Parra-Velandia, F., Schönberg, C. H. L., Breeuwer, J. A., and van Soest, R. W.: Molecular evidence of cryptic speciation in the “cosmopolitan” excavating sponge Cliona celata (Porifera, Clionaidae), Mol. Phylogenet. Evol., 56, 13–20, 2010.
Short summary
In this study we present results from the first long-term bioerosion experiment (1–14 years of exposure) outside the tropical realm. A novel micro-CT approach was used to visualise and to quantify the development of macrobioerosion traces. After 14 years, 30 % of the original substrate volume was excavated chiefly by sponges. High spatio-temporal variability prohibited clear conclusions about the onset of macrobioerosion equilibrium conditions, calling for further long-term experiments.
In this study we present results from the first long-term bioerosion experiment (1–14 years of...
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