Articles | Volume 14, issue 3
https://doi.org/10.5194/bg-14-651-2017
© Author(s) 2017. 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-14-651-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
09 Feb 2017
Research article |
| 09 Feb 2017
Evaluating environmental drivers of spatial variability in free-living nematode assemblages along the Portuguese margin
Marine Biology research group, Ghent University, Krijgslaan 281 S8,
9000 Ghent, Belgium
Meiofauna Laboratory, Federal University of Pernambuco, Av. Prof
Moraes Rego 1235, 50670-901, Cidade Universitária, Brazil
Frederik Leliaert
Marine Biology research group, Ghent University, Krijgslaan 281 S8,
9000 Ghent, Belgium
Torben Riehl
CeNak, Center of Natural History, University of Hamburg – Zoological
Museum, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
Sofia Pinto Ramalho
Marine Biology research group, Ghent University, Krijgslaan 281 S8,
9000 Ghent, Belgium
Departamento de Biologia & CESAM, Universidade de Aveiro, Campus de
Santiago, 3810-193, Aveiro, Portugal
Eliana Alfaro Cordova
Prodelphinus, Jose Galvez 780-E, Lima 18, Peru
André Morgado Esteves
Meiofauna Laboratory, Federal University of Pernambuco, Av. Prof
Moraes Rego 1235, 50670-901, Cidade Universitária, Brazil
Ann Vanreusel
Marine Biology research group, Ghent University, Krijgslaan 281 S8,
9000 Ghent, Belgium
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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.
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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.
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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
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This article studies phytoplankton (microscopic
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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.
Cited articles
Akaike, H.: A new look at the statistical model identification, IEEE Trans, Automat, Contr., 19, 716–723, 1974.
Alvarez-Salgado, X. A., Castro, C. G., Perez, F. F., and Fraga, F.: Nutrient mineralization patterns in shelf waters of the Western Iberian upwelling, Cont. Shelf Res., 17, 1247–1270, https://doi.org/10.1016/s0278-4343(97)00014-9, 1997.
Anderson, R. N., Clarke, K. R., and Gorley, M. J.: PERMANOVA+ for PRIMER: guide to software and statistical methods, PRIMER-E, 2007.
Baldrighi, E., Lavaleye, M., Aliani, S., Conversi, A., and Manini, E.: Large Spatial Scale Variability in Bathyal Macrobenthos Abundance, Biomass, alpha- and beta-Diversity along the Mediterranean Continental Margin, PLoS One, 9, 1–16, https://doi.org/10.1371/journal.pone.0107261, 2014.
Benson, D. A., Karsch-Mizrachi, I., Lipman, D. J., Ostell, J., and Wheeler, D. L.: GenBank, Nucleic. Acids. Res., 36, 25-30, https://doi.org/10.1093/nar/gkm929, 2008.
Bik, H. M., Thomas, W. K., Lunt, D. H., and Lambshead, P. J. D.: Low endemism, continued deep-shallow interchanges, and evidence for cosmopolitan distributions in free-living marine nematodes (order Enoplida), Evol. Biol., 10, 1–10, https://doi.org/10.1186/1471-2148-10-389, 2010.
Billett, D. S. M., Lampitt, R. S., Rice, A. L., and Mantoura, R. F. C.: Seasonal sedimentation of phytoplankton to the deep-sea benthos, Nature, 302, 520–522, https://doi.org/10.1038/302520a0, 1983.
Blaxter, M. L., De Ley, P., Garey, J. R., Liu, L. X., Scheldeman, P., Vierstraete, A., Vanfleteren, J. R., Mackey, L. Y., Dorris, M., Frisse, L. M., Vida, J. T., and Thomas, W. K.: A molecular evolutionary framework for the phylum Nematoda, Nature, 392, 71–75, https://doi.org/10.1038/32160, 1998.
Boeckner, M. J., Sharma, J., and Proctor, H. C.: Revisiting the meiofauna paradox: dispersal and colonization of nematodes and other meiofaunal organisms in low- and high-energy environments, Hydrobiologia, 624, 91–106, https://doi.org/10.1007/s10750-008-9669-5, 2009.
Brandt, A.: Origin of Antarctic Isopoda (CRUSTACEA, MALACOSTRACA), Mar. Biol., 113, 415–423, https://doi.org/10.1007/bf00349167, 1992.
Brandt, A., Gooday, A. J., Brandao, S. N., Brix, S., Broekeland, W., Cedhagen, T., Choudhury, M., Cornelius, N., Danis, B., De Mesel, I., Diaz, R. J., Gillan, D. C., Ebbe, B., Howe, J. A., Janussen, D., Kaiser, S., Linse, K., Malyutina, M., Pawlowski, J., Raupach, M., and Vanreusel, A.: First insights into the biodiversity and biogeography of the Southern Ocean deep sea, Nature, 447, 307–311, https://doi.org/10.1038/nature05827, 2007.
Cardinale, B. J., Nelson, K., and Palmer, M. A.: Linking species diversity to the functioning of ecosystems: on the importance of environmental context, Oikos, 91, 175–183, https://doi.org/10.1034/j.1600-0706.2000.910117.x, 2000.
Condie, S. A. and Sherwood, C. R.: Sediment distribution and transport across the continental shelf and slope under idealized wind forcing, Prog. Oceanogr., 70, 255–270, https://doi.org/10.1016/j.pocean.2005.07.003, 2006.
Crespo, B. G., Espinoza-Gonzalez, O., Teixeira, I. G., Castro, C. G., and Figueiras, F. G.: Possible mixotrophy of pigmented nanoflagellates: Microbial plankton biomass, primary production and phytoplankton growth in the NW Iberian upwelling in spring, Estuar. Coast. Shelf Sci., 94, 172–181, https://doi.org/10.1016/j.ecss.2011.06.008, 2011.
Danovaro, R., Company, J. B., Corinaldesi, C., D'Onghia, G., Galil, B., Gambi, C., Gooday, A. J., Lampadariou, N., Luna, G. M., Morigi, C., Olu, K., Polymenakou, P., Ramirez-Llodra, E., Sabbatini, A., Sarda, F., Sibuet, M., and Tselepides, A.: Deep-Sea Biodiversity in the Mediterranean Sea: The Known, the Unknown, and the Unknowable, PLoS One, 5, 1–25, https://doi.org/10.1371/journal.pone.0011832, 2010.
Danovaro, R., Carugati, L., Corinaldesi, C., Gambi, C., Guilini, K., Pusceddu, A., and Vanreusel, A.: Multiple spatial scale analyses provide new clues on patterns and drivers of deep-sea nematode diversity, Deep.-Res. Pt. II, 92, 97–106, https://doi.org/10.1016/j.dsr2.2013.03.035, 2013.
De Grisse, A.: Redescription ou modification de quelques techniques utilisés dans l'étude des nématodes phytoparasitaires, Meded. Rijksfakulteit Landbouwwet., Gent, 34, 251–369, 1969.
De Mesel, I., Lee, H. J., Vanhove, S., Vincx, M., and Vanreusel, A.: Species diversity and distribution within the deep-sea nematode genus Acantholaimus on the continental shelf and slope in Antarctica, Polar Biol., 29, 860–871, https://doi.org/10.1007/s00300-006-0124-7, 2006.
Derycke, S., Backeljau, T., and Moens, T.: Dispersal and gene flow in free-living marine nematodes, Front. Zool., 10, 1–12, https://doi.org/10.1186/1742-9994-10-1, 2013.
Derycke, S., Remerie, T., Vierstraete, A., Backeljau, T., Vanfleteren, J., Vincx, M., and Moens, T.: Mitochondrial DNA variation and cryptic speciation within the free-living marine nematode Pellioditis marina, Mar. Ecol. Prog. Ser., 300, 91–103, https://doi.org/10.3354/meps300091, 2005.
Drago, T., Oliveira, A., Magalhaes, F., Cascalho, J., Jouanneau, J.M., and Vitorino, J.: Some evidences of northward fine sediment transport in the northern Portuguese continental shelf, Oceanol. Acta, 21, 223–231, https://doi.org/10.1016/s0399-1784(98)80010-8, 1998.
Easton, E. E. and Thistle, D.: Do some deep-sea, sediment-dwelling species of harpacticoid copepods have 1000-km-scale range sizes?, Mol. Ecol., 25, 4301–4318, https://doi.org/10.1111/mec.13744, 2016.
Etter, R. J. and Bower, A. S.: Dispersal and population connectivity in the deep North Atlantic estimated from physical transport processes, Deep.-Res. Pt. I, 104, 159–172, https://doi.org/10.1016/j.dsr.2015.06.009, 2015.
Etter, R. J. and Grassle, J. F.: Patterns of species-diversity in the deep sea as a function of sediment particle-size diversity, Nature, 360, 576–578, https://doi.org/10.1038/360576a0, 1992.
Etter, R. J., Rex, M. A., Chase, M. R., and Quattro, J. M.: Population differentiation decreases with depth in deep-sea bivalves, Evolution (NY), 59, 1479–1491, https://doi.org/10.1111/j.0014-3820.2005.tb01797.x, 2005.
Etter, R. J., Boyle, E. E., Glazier, A., Jennings, R. M., Dutra, E., and Chase, M. R.: Phylogeography of a pan-Atlantic abyssal protobranch bivalve: implications for evolution in the Deep Atlantic, Mol. Ecol., 20, 829–843, https://doi.org/10.1111/j.1365-294X.2010.04978.x, 2011.
Figueiras, F. G., Labarta, U., and Reiriz, M. J. F.: Coastal upwelling, primary production and mussel growth in the Rias Baixas of Galicia, Hydrobiologia, 484, 121–131, https://doi.org/10.1023/a:1021309222459, 2002.
Flach, E., Muthumbi, A., and Heip, C.: Meiofauna and macrofauna community structure in relation to sediment composition at the Iberian margin compared to the Goban Spur (NE Atlantic), Prog. Oceanogr., 52, 433–457, https://doi.org/10.1016/s0079-6611(02)00018-6, 2002.
France, S. C. and Kocher, T. D.: Geographic and bathymetric patterns of mitochondrial 16S rRNA sequence divergence among deep-sea amphipods, Eurythenes gryllus, Mar. Biol., 126, 633–64, https://doi.org/10.1007/bf00351330, 1996.
Gage, J. D.: High benthic species diversity in deep-sea sediments: The importance of hydrodynamics, Marine Biodiversity: patterns and processes, Cambridge University Press, Cambridge, 1997.
Gallucci, F., Moens, T., Vanreusel, A., and Fonseca, G.: Active colonisation of disturbed sediments by deep-sea nematodes: evidence for the patch mosaic model, Mar. Ecol. Ser., 367, 173–183, https://doi.org/10.3354/meps07537, 2008.
Garcia, R. and Thomsen, L.: Bioavailable organic matter in surface sediments of the Nazare canyon and adjacent slope (Western Iberian Margin), J. Mar. Syst., 74, 44–59, https://doi.org/10.1016/j.jmarsys.2007.11.004, 2008.
Giere, O.: Meiobenthology: the microscopic motile fauna of aquatic sediments, 2009.
Gray, J. S.: Species richness of marine soft sediments, Mar. Ecol. Prog. Ser., 244, 285–297, https://doi.org/10.3354/meps244285, 2002.
Havermans, C., Sonet, G., D'Acoz, C., d'Udekem, 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.
Heip, C., Vincx, M., and Vranken, G.: The ecology of marine nematodes, Oceanogr. Mar. Biol., 23, 399–489, 1985.
ICES: Report of the ICES Advisory Comittee, ICES Advice, 2008.
Jennings, R. M., Etter, R. J., and Ficarra, L.: Population Differentiation and Species Formation in the Deep Sea: The Potential Role of Environmental Gradients and Depth, PLoS One, 8, e77594, https://doi.org/10.1371/journal.pone.0077594, 2013.
Jensen, P.: Phyto-chemical sensitivity and swimming behavior of the free-living marine nematode Chromadorita tenuis, Mar. Ecol. Ser., 4, 203–206, https://doi.org/10.3354/meps004203, 1981.
Jensen, P.: Feeding ecology of free-living aquatic nematodes, Mar. Ecol. Ser., 35, 187–196, 1987.
Katoh, K., Asimenos, G., and Toh, H.: Multiple Alignment of DNA Sequences with MAFFT, edited by: Posada, D., Bioinforma, DNA Seq. Anal., 537, 39–64, 2009.
Kearse, M., Moir, R., Wilson, A., Stones-Havas, S., Cheung, M., Sturrock, S., Buxton, S., Cooper, A., Markowitz, S., Duran, C., Thierer, T., Ashton, B., Meintjes, P., and Drummond, A.: Geneious Basic: An integrated and extendable desktop software platform for the organization and analysis of sequence data, Bioinformatics, 28, 1647–1649, https://doi.org/10.1093/bioinformatics/bts199, 2012.
Kussakin, O. G.: Peculiarities of geographical and vertical distribution of marine Isopods and problem of deep-sea fauna origin, Mar. Biol., 23, 19–34, https://doi.org/10.1007/bf00394108, 1973.
Lambshead, P. J. D., Tietjen, J., Ferrero, T., and Jensen, P.: Latitudinal diversity gradients in the deep sea with special reference to North Atlantic nematodes, Mar. Ecol. Prog. Ser., 194, 159–167, https://doi.org/10.3354/meps194159, 2000.
Leduc, D., Rowden, A. A., Bowden, D. A., Nodder, S. D. S., Probert, P. K., Pilditch, C. C. A., Duineveld, G. G. C. A., and Witbaard, R.: Nematode beta diversity on the continental slope of New Zealand?: spatial patterns and environmental drivers, Mar. Ecol. Prog. Ser., 454, 37–52, 2012a.
Leduc, D., Rowden, A. A., Probert, P. K., Pilditch, C. A., Nodder, S. D., Vanreusel, A., Duineveld, G. C. A., and Witbaard, R.: Further evidence for the effect of particle-size diversity on deep-sea benthic biodiversity, Deep.-Res. Pt. I, 63, 164–169, 2012b.
Lee, H. J., Vanhove, S., Peck, L. S., and Vincx, M.: Recolonisation of meiofauna after catastrophic iceberg scouring in shallow Antarctic sediments, Polar Biol., 24, 918–925, https://doi.org/10.1007/s003000100300, 2001.
Levin, L. A. and Dayton, P. K.: Ecological theory and continental margins: where shallow meets deep, Trends Ecol. Evol., 24, 606–617, https://doi.org/10.1016/j.tree.2009.04.012, 2009.
Levin, L. A., Etter, R. J., Rex, M. A., Gooday, A. J., Smith, C. R., Pineda, J., Stuart, C. T., Hessler, R. R., and Pawson, D.: Environmental influences on regional deep-sea species diversity, Annu. Rev. Ecol. Syst., 32, 51–93, 2001.
Lins, L., Guilini, K., Veit-Köhler, G., Hauquier, F., Alves, R. M. S., Esteves, A. M., and Vanreusel, A.: The link between meiofauna and surface productivity in the Southern Ocean, Deep.-Res. Pt. II, 108, 60–68., https://doi.org/10.1016/j.dsr2.2014.05.003, 2014.
Lins, L., da Silva, M. C., Hauquier, F., Esteves, A. M., and Vanreusel, A.: Nematode community composition and feeding shaped by contrasting productivity regimes in the Southern Ocean, Prog. Oceanogr., 134, 356–369, https://doi.org/10.1016/j.pocean.2015.03.006, 2015.
Loreau, M., Naeem, S., Inchausti, P., Bengtsson, J., Grime, J. P., Hector, A., Hooper, D. U., Huston, M. A., Raffaelli, D., Schmid, B., Tilman, D., and Wardle, D. A.: Ecology – Biodiversity and ecosystem functioning: Current knowledge and future challenges, Science, 294, 804–808, https://doi.org/10.1126/science.1064088, 2001.
Lutz, M. J., Caldeira, K., Dunbar, R. B., and Behrenfeld, M. J.: Seasonal rhythms of net primary production and particulate organic carbon flux to depth describe the efficiency of biological pump in the global ocean, J. Geophys. Res., 112, C10011, https://doi.org/10.1029/2006jc003706, 2007.
Meldal, B. H. M., Debenham, N. J., De Ley, P., De Ley, I. T., Vanfleteren, J. R., Vierstraete, A. R., Bert, W., Borgonie, G., Moens, T., Tyler, P. A., Austen, M. C., Blaxter, M. L., Rogers, A. D., and Lambshead, P. J. D.: An improved molecular phylogeny of the Nematoda with special emphasis on marine taxa, Mol. Phylogenet. Evol., 42, 622–636, https://doi.org/10.1016/j.ympev.2006.08.025, 2007.
Moens, T., Braeckman, U., Derycke, S., Fonseca, G., Gallucci, F., Gingold, R., Guilini, K., Ingels, J., Leduc, D., Vanaverbeke, J., Van Colen, C., Vanreusel, A., and Vincx, M.: Ecology of free-living marine nematodes, in: Handbook of Zoology: Gastrotricha, Cycloneuralia and Gnathifera, edited by: Schmidt-Rhaesa, A., 2, 109–152, 2014.
Moreno, M., Ferrero, T. J., Gallizia, I., Vezzulli, L., Albertelli, G., and Fabiano, M.: An assessment of the spatial heterogeneity of environmental disturbance within an enclosed harbour through the analysis of meiofauna and nematode assemblages, Estuar. Coast. Shelf Sci., 77, 565–576, https://doi.org/10.1016/j.ecss.2007.10.016, 2008.
Muthumbi, A. W. and Vincx, M.: Acantholaimus (Chromadoridae: Nematoda) from the Indian Ocean: description of seven species, Hydrobiologia, 346, 59–76, https://doi.org/10.1023/a:1002937226161, 1997.
Muthumbi, W. N. A., Vanreusel, A., and Vincx, M.: Taxon-related diversity patterns from the continental shelf to the slope: a case study on nematodes from the Western Indian Ocean, Mar. Ecol., 32, 453–467, https://doi.org/10.1111/j.1439-0485.2011.00449.x, 2011.
Netto, S. A., Gallucci, F., and Fonseca, G. F. C.: Meiofauna communities of continental slope and deep-sea sites off SE Brazil, Deep-Res. Pt. I, 52, 845–859, https://doi.org/10.1016/j.dsr.2004.11.009, 2005.
Nolasco, R., Pires, A. C., Cordeiro, N., Le Cann, B., and Dubert, J.: A high-resolution modeling study of the Western Iberian Margin mean and seasonal upper ocean circulation, Ocean Dynam., 63, 1041–1062, https://doi.org/10.1007/s10236-013-0647-8, 2013.
Pape, E., Bezerra, T. N., Jones, D. O. B., and Vanreusel, A.: Unravelling the environmental drivers of deep-sea nematode biodiversity and its relation with carbon mineralisation along a longitudinal primary productivity gradient, Biogeosciences, 10, 3127–3143, https://doi.org/10.5194/bg-10-3127-2013, 2013.
Posada, D.: jModelTest: Phylogenetic model averaging, Mol. Biol. Evol., 25, 1253–1256, https://doi.org/10.1093/molbev/msn083, 2008.
Posada, D. and Crandall, K. A.: MODELTEST: testing the model of DNA substitution, Bioinformatics, 14, 817–818, https://doi.org/10.1093/bioinformatics/14.9.817, 1998.
Puig, P., Canals, M., Company, J. B., Martin, J., Amblas, D., Lastras, G., Palanques, A., and Calafat, A. M.: Ploughing the deep sea floor, Nature, 489, 286–290, https://doi.org/10.1038/nature11410, 2012.
Pusceddu, A., Bianchelli, S., Martin, J., Puig, P., Palanques, A., Masque, P., and Danovaro, R.: Chronic and intensive bottom trawling impairs deep-sea biodiversity and ecosystem functioning, P. Natl. Acad. Sci. USA, 111, 8861–8866, https://doi.org/10.1073/pnas.1405454111, 2014.
Quaresma, L. S., Vitorino, J., Oliveira, A., and da Silva, J. C. B.: Evidence of sediment resuspension by nonlinear internal waves on the western Portuguese mid-shelf, Mar. Geol., 246, 123–143, https://doi.org/10.1016/j.margeo.2007.04.019, 2007.
Quattrini, A. M., Baums, I. B., Shank, T. M., Morrison, C. L., and Cordes, E. E.: Testing the depth-differentiation hypothesis in a deepwater octocoral, P. R. Soc. B, 282, 20150008, https://doi.org/10.1098/rspb.2015.0008, 2015.
Quattro, J. M., Chase, M. R., Rex, M. A., Greig, T. W., and Etter, R. J.: Extreme mitochondrial DNA divergence within populations of the deep-sea gastropod Frigidoalvania brychia, Mar. Biol., 139, 1107–1113, 2001.
R Core Team: R: A language and environment for statistical computing, R Foundation for Statistical Computing, 2013.
Raes, M., Rose, A., and Vanreusel, A.: Response of nematode communities after large-scale ice-shelf collapse events in the Antarctic Larsen area, Glob. Change Biol., 16, 1618–1631, https://doi.org/10.1111/j.1365-2486.2009.02137.x, 2010.
Ramalho, S. P., Adao, H., Kiriakoulakis, K., Wolff, G. A., Vanreusel, A., and Ingels, J.: Temporal and spatial variation in the Nazare Canyon (Western Iberian margin): Inter-annual and canyon heterogeneity effects on meiofauna biomass and diversity, Deep.-Res. Pt. I, 83, 102–114, https://doi.org/10.1016/j.dsr.2013.09.010, 2014.
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.
Relvas, P., Barton, E. D., Dubert, J., Oliveira, P. B., Peliz, A., da Silva, J. C. B., and Santos, A. M. P.: Physical oceanography of the western Iberia ecosystem: Latest views and challenges, Prog. Oceanogr., 74, 149–173, https://doi.org/10.1016/j.pocean.2007.04.021, 2007.
Rex, M. A.: Community structure in the deep-sea benthos, Annu. Rev. Ecol. Syst., 12, 331–353, 1981.
Rex, M. A. and Etter, R. J.: Deep-sea biodiversity: pattern and scale, Setting the stage: patterns of benthic standing stock, Harvard University Press, 2010.
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. and Kaiser, S.: Conquered from the Deep Sea? A New Deep-Sea Isopod Species from the Antarctic Shelf Shows Pattern of Recent Colonization, PLoS One, 7, e49354, https://doi.org/10.1371/journal.pone.0049354, 2012.
Ronquist, F. and Huelsenbeck, J. P.: MrBayes 3: Bayesian phylogenetic inference under mixed models, Bioinformatics, 19, 1572–1574, https://doi.org/10.1093/bioinformatics/btg180, 2003.
Rowe, G. T., Wei, C., Nunnally, C., Haedrich, R., Montagna, P., Baguley, J. G., Bernhard, J. M., Wicksten, M., Ammons, A., Escobar Briones, E., Soliman, Y., and Deming, J. W.: Comparative biomass structure and estimated carbon flow in food webs in the deep Gulf of Mexico, Deep.-Res. Pt. II, 55, 2699–2711, https://doi.org/10.1016/j.dsr2.2008.07.020, 2008.
Salgueiro, E., Naughton, F., Voelker, A. H. L., de Abreu, L., Alberto, A., Rossignol, L., Duprat, J., Magalhaes, V. H., Vaqueiro, S., Turon, J. L., and Abrantes, F.: Past circulation along the western Iberian margin: a time slice vision from the Last Glacial to the Holocene, Quaternary Sci. Rev., 106, 316–329, https://doi.org/10.1016/j.quascirev.2014.09.001, 2014.
Salgueiro, E., Voelker, A. H. L., de Abreu, L., Abrantes, F., Meggers, H., and Wefer, G.: Temperature and productivity changes off the western Iberian margin during the last 150 ky, Quaternary Sci. Rev., 29, 680–695, https://doi.org/10.1016/j.quascirev.2009.11.013, 2010.
Schratzberger, M., Whomersley, P., Warr, K., Bolam, S. G., and Rees, H. L.: Colonisation of various types of sediment by estuarine nematodes via lateral infaunal migration: a laboratory study, Mar. Biol., 145, 69–78, https://doi.org/10.1007/s00227-004-1302-1, 2004.
Serpetti, N., Gontikaki, E., Narayanaswamy, B. E., and Witte, U.: Macrofaunal community inside and outside of the Darwin Mounds Special Area of Conservation, NE Atlantic, Biogeosciences, 10, 3705–3714, https://doi.org/10.5194/bg-10-3705-2013, 2013.
Silvestro, D. and Michalak, I.: raxmlGUI: a graphical front-end for RAxML, Org. Divers. Evol., 12, 335–337, https://doi.org/10.1007/s13127-011-0056-0, 2012.
Stachowicz, J. J., Bruno, J. F., and Duffy, J. E.: Understanding the effects of marine biodiversity on communities and ecosystems, Annu. Rev. Ecol. Evol. Syst., 38, 739–766, https://doi.org/10.1146/annurev.ecolsys.38.091206.095659, 2007.
Stamatakis, A.: RAxML-VI-HPC: Maximum likelihood-based phylogenetic analyses with thousands of taxa and mixed models, Bioinformatics, 22, 2688–2690, https://doi.org/10.1093/bioinformatics/btl446, 2006.
Strugnell, J. M., Rogers, A. D., Prodohl, P. A., Collins, M. A., and Allcock, A. L.: The thermohaline expressway: the Southern Ocean as a centre of origin for deep-sea octopuses, Cladistics, 24, 853–860, https://doi.org/10.1111/j.1096-0031.2008.00234.x, 2008.
Tamura, K., Stecher, G., Peterson, D., Filipski, A., and Kumar, S.: MEGA6: molecular evolutionary genetics analysis version 6.0, Mol. Biol. Evol., 30, 2725–2729, 2013.
Thiel, H.: Benthos in Upwelling Regions, Upwelling Ecosystems, Springer Berlin Heidelberg, Berlin, https://doi.org/10.1007/978-3-642-66985-9_11, 1978.
Tokeshi, M.: Species Coexistence: Ecological and evolutionary perspectives, Cambridge, 1999.
Ullberg, J. and Olafsson, E.: Free-living marine nematodes actively choose habitat when descending from the water column, Mar. Ecol. Ser., 260, 141–149, 2003.
Vanaverbeke, J., Bezerra, T. N., Braeckman, U., De Groote, A., de Meester, N., Deprez, T., Derycke, S., Gilarte, P., Guilini, K., Hauquier, F., Lins, L., Maria, T., Moens, T., Pape, E., Smol, N., Taheri, M., Van Campenhout, J., Vanreusel, A., Wu, X., and Vincx, M.: Nemys: World Database of Free-living Marine Nematodes, available at: http://nemys.ugent.be, last access: 3 December 2015.
Van Campenhout, J., Derycke, S., Tchesunov, A., Portnova, D., and Vanreusel, A.: The Halomonhystera disjuncta population is homogeneous across the Hakon Mosby mud volcano (Barents Sea) but is genetically differentiated from its shallow-water relatives, J. Zool. Syst. Evol. Res., 52, 203–216, https://doi.org/10.1111/jzs.12054, 2014.
Van Gaever, S., Olu, K., Derycke, S., and Vanreusel, A.: Metazoan meiofaunal communities at cold seeps along the Norwegian margin: Influence of habitat heterogeneity and evidence for connection with shallow-water habitats, Deep.-Res. Pt. I, 56, 772–785, https://doi.org/10.1016/j.dsr.2008.12.015, 2009.
Vanreusel, A., Vincx, M., Van Gansbeke, D., and Gijselinck, W.: Structural Analysis of the meiobenthos communities of the shelf break area in two stations of the Gulf of biscay, Belgian J. Zool., 122, 185–202, 1992.
Vanreusel, A., Fonseca, G., Danovaro, R., da Silva, M. C., Esteves, A. M., Ferrero, T., Gad, G., Galtsova, V., Gambi, C., Genevois, V.D., Ingels, J., Ingole, B., Lampadariou, N., Merckx, B., Miljutin, D., Miljutina, M., Muthumbi, A., Netto, S., Portnova, D., Radziejewska, T., Raes, M., Tchesunov, A., Vanaverbeke, J., Van Gaever, S., Venekey, V., Bezerra, T. N., Flint, H., Copley, J., Pape, E., Zeppilli, D., Martinez, P. A., and Galeron, J.: The contribution of deep-sea macrohabitat heterogeneity to global nematode diversity, Mar. Ecol. Evol. Perspect., 31, 6–20, https://doi.org/10.1111/j.1439-0485.2009.00352.x, 2010.
Vincx, M., Bett, B. J., Dinet, A., Ferrero, T., Gooday, A. J., Lambshead, P. J. D., Pfannkuche, O., Soltwedel, T., and Vanreusel, A.: Meiobenthos of the deep Northeast Atlantic, Adv. Mar. Biol., 30, 1–88, 1994.
Warwick, H. M., Somerfield, P. J., and Platt, R. M.: Free-living marine nematodes part III – Monhysterids, Pictorial key to world genera and notes for the identification of British species, 1998.
Wei, C.-L., Rowe, G. T., Escobar-Briones, E., Boetius, A., Soltwedel, T., Caley, M. J., Soliman, Y., Huettmann, F., Qu, F., Yu, Z., Pitcher, C. R., Haedrich, R. L., Wicksten, M. K., Rex, M. A., Baguley, J. G., Sharma, J., Danovaro, R., MacDonald, I. R., Nunnally, C. C., Deming, J. W., Montagna, P., Levesque, M., Weslawski, J. M., Wlodarska-Kowalczuk, M., Ingole, B. S., Bett, B. J., Billett, D. S. M., Yool, A., Bluhm, B. A., Iken, K., and Narayanaswamy, B. E.: Global Patterns and Predictions of Seafloor Biomass Using Random Forests, PLoS One, 5, e15323, https://doi.org/10.1371/journal.pone.0015323, 2010.
Whittaker, R. J., Willis, K. J., and Field, R.: Scale and species richness: towards a general, hierarchical theory of species diversity, J. Biogeogr., 28, 453–470, https://doi.org/10.1046/j.1365-2699.2001.00563.x, 2001.
Wieser, W.: Beziehungen zwischen Mundhöhlengestalt, Ernährungsweise und Vorkommen bei freilebenden marinen Nematoden, Ark. für Zool., 4, 439–484, 1953.
Wilson, G. D.: Variation in deep-sea Isopod Eurycope iphthima (ASELLOTA, EURYCOPIDAE) – Depth related clines in rostral morphology and in population structure, J. Crustac. Biol., 3, 127–140, https://doi.org/10.2307/1547858, 1983.
Wright, S. W. and Jeffrey, S. W.: High-resolution HPLC system for chlorophylls and carotenoids of marine phytoplankton, in: Phytoplankton Pigments in Oceanography, edited by: Jeffrey, S. W., Mantoura, R. F. C., and Wright, S. W., UN Educational, Scientific and Cultural Organization, Paris, 327–341, 1997.
Yoder, M., De Ley, I. T., King, I. W., Mundo-Ocampo, M., Mann, J., Blaxter, M., Poiras, L., and De Ley, P.: DESS: a versatile solution for preserving morphology and extractable DNA of nematodes, Nematology, 8, 367–376, https://doi.org/10.1163/156854106778493448, 2006.
Zeppilli, D., Vanreusel, A., and Danovaro, R.: Cosmopolitanism and Biogeography of the Genus Manganonema (Nematoda: Monhysterida) in the Deep sea, Animals, 1, 291–305, https://doi.org/10.3390/ani1030291, 2011.
Short summary
Anthropogenic impacts in the deep sea are regarded as high disturbers of the deep-sea bottom. This study focus in trying to understand the impact of disturbance in the ecosystem and how important functions, such as hydrodynamics and surface primary productivity, affect benthic organisms. Our results showed that high sediment variability due to hydrodynamics, and consequently disturbance, combined with high resource availability are probably the main factors promoting deep-sea species coexistence
Anthropogenic impacts in the deep sea are regarded as high disturbers of the deep-sea bottom....
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