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Short summary
The trophic preference (i.e., food resources and trophic levels) of different copepod groups was assessed along a salinity gradient in the temperate estuarine Gwangyang Bay of Korea, based on a seasonal investigation of taxonomic results in 2015 and stable isotope analysis incorporating multiple linear regression models. Our results depict a simple energy flow of the planktonic food web of Gwangyang Bay.
The trophic preference (i.e., food resources and trophic levels) of different copepod groups was...
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Preprint
BG | Articles | Volume 15, issue 7
Biogeosciences, 15, 2055–2073, 2018
https://doi.org/10.5194/bg-15-2055-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 2055–2073, 2018
https://doi.org/10.5194/bg-15-2055-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article 09 Apr 2018
Research article | 09 Apr 2018
Variability in copepod trophic levels and feeding selectivity based on stable isotope analysis in Gwangyang Bay of the southern coast of the Korean Peninsula
Mianrun Chen et al.
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Yanhong Lu, Shunyan Cheung, Ling Chen, Shuh-Ji Kao, Xiaomin Xia, Jianping Gan, Minhan Dai, and Hongbin Liu
Biogeosciences, 17, 6017–6032, https://doi.org/10.5194/bg-17-6017-2020, https://doi.org/10.5194/bg-17-6017-2020, 2020
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Through a comprehensive investigation, we observed differential niche partitioning among diverse ammonia-oxidizing archaea (AOA) sublineages in a typical subtropical estuary. Distinct AOA communities observed at DNA and RNA levels suggested that a strong divergence in ammonia-oxidizing activity among different AOA groups occurs. Our result highlights the importance of identifying major ammonia oxidizers at RNA level in future studies.
Yangyang Zhao, Khanittha Uthaipan, Zhongming Lu, Yan Li, Jing Liu, Hongbin Liu, Jianping Gan, Feifei Meng, and Minhan Dai
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-346, https://doi.org/10.5194/bg-2020-346, 2020
Preprint under review for BG
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We examined the evolution of intermittent hypoxia off the Pearl River Estuary as disturbed by the typhoon. In-situ oxygen consumption rate and associated time scales for the hypoxia formation was estimated for the first time at large-scales over the destruction and reinstatement of hypoxia. The comparable time scales for hypoxia formation, water residence time and disturbances from tropical cyclones have important implications towards better predicting coastal hypoxia in a changing climate.
Juan Yao, Juying Wang, Hongbin Liu, and Kedong Yin
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-188, https://doi.org/10.5194/bg-2020-188, 2020
Manuscript not accepted for further review
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Our study finds that winds appear to be a dominant regulating force on the formation of hypoxia in the Pearl River estuarine waters. The wind speed > 6 m/s appears to a threshold above which the water column stratification is destroyed and the formation of bottom hypoxia is interrupted. The frequency of such the above-threshold wind events decreases significantly, implying that climate change induced variability in wind speeds can exasperate the coastal formation of bottom hypoxia in the region.
Jang Han Lee, Dabin Lee, Jae Joong Kang, Hui Tae Joo, Jae Hyung Lee, Ho Won Lee, So Hyun Ahn, Chang Keun Kang, and Sang Heon Lee
Biogeosciences, 14, 1903–1917, https://doi.org/10.5194/bg-14-1903-2017, https://doi.org/10.5194/bg-14-1903-2017, 2017
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Based on the seasonal biochemical compositions in this study, the calorific contents of the food material were 1.0–6.1 Kcal m−3. We found that a major governing factor in the biochemical composition of POM was dissolved inorganic nitrogen loading from river input. The relatively larger amount of food material and the higher calorific content of the POM found in this study reflected good nutritive conditions for sustaining productive shellfish and fish populations in Gwangyang Bay, South Korea.
Hongbin Liu and Chih-Jung Wu
Biogeosciences, 13, 4767–4775, https://doi.org/10.5194/bg-13-4767-2016, https://doi.org/10.5194/bg-13-4767-2016, 2016
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The transport of organic C from the surface to the deep ocean by sinking particles composed of remains of dead cells and zooplankton fecal pellets can reduce the atmospheric CO2. Study of the effect of the silica content of diatoms, one of the most important primary products, on the production, degradation and sinking of its fecal pellets provides a better understanding of the complexity and variability of the planktonic food web and its implication on the vertical flux of C in the global ocean.
H. Jing, E. Rocke, L. Kong, X. Xia, H. Liu, and M. R. Landry
Biogeosciences Discuss., https://doi.org/10.5194/bgd-12-13483-2015, https://doi.org/10.5194/bgd-12-13483-2015, 2015
Manuscript not accepted for further review
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Photosynthetic Dinoflagellates predominated in the surface, while potential parasitic Dinoflagellates and Ciliates dominated in the OMZ and deeper water in Costa Rica Dome. Total and active protists in the anoxic core were distinct from those in others depths. Reduced community diversity and presence of parasitic/symbiotic trophic lifestyles in the suboxic/anoxic OMZ suggests that oxygen deficiency could cause a change of protist community and the associated microbial food web as well.
K.-K. Liu, C.-K. Kang, T. Kobari, H. Liu, C. Rabouille, and K. Fennel
Biogeosciences, 11, 7061–7075, https://doi.org/10.5194/bg-11-7061-2014, https://doi.org/10.5194/bg-11-7061-2014, 2014
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This paper provides background info on the East China Sea, Japan/East Sea and South China Sea and highlights major findings in the special issue on their biogeochemical conditions and ecosystem functions. The three seas are subject to strong impacts from human activities and/or climate forcing. Because these continental margins sustain arguably some of the most productive marine ecosystems in the world, changes in these stressed ecosystems may threaten the livelihood of a large human population.
K. Suzuki, A. Hattori-Saito, Y. Sekiguchi, J. Nishioka, M. Shigemitsu, T. Isada, H. Liu, and R. M. L. McKay
Biogeosciences, 11, 2503–2517, https://doi.org/10.5194/bg-11-2503-2014, https://doi.org/10.5194/bg-11-2503-2014, 2014
C. Guo, H. Liu, L. Zheng, S. Song, B. Chen, and B. Huang
Biogeosciences, 11, 1847–1862, https://doi.org/10.5194/bg-11-1847-2014, https://doi.org/10.5194/bg-11-1847-2014, 2014
Y.-T. Son, K.-I. Chang, S.-T. Yoon, T. Rho, J. H. Kwak, C. K. Kang, and K.-R. Kim
Biogeosciences, 11, 1319–1329, https://doi.org/10.5194/bg-11-1319-2014, https://doi.org/10.5194/bg-11-1319-2014, 2014
C.-C. Lai, Y.-W. Fu, H.-B. Liu, H.-Y. Kuo, K.-W. Wang, C.-H. Lin, J.-H. Tai, G. T. F. Wong, K.-Y. Lee, T.-Y. Chen, Y. Yamamoto, M.-F. Chow, Y. Kobayashi, C.-Y. Ko, and F.-K. Shiah
Biogeosciences, 11, 147–156, https://doi.org/10.5194/bg-11-147-2014, https://doi.org/10.5194/bg-11-147-2014, 2014
J. H. Kwak, S. H. Lee, H. J. Park, E. J. Choy, H. D. Jeong, K. R. Kim, and C. K. Kang
Biogeosciences, 10, 4405–4417, https://doi.org/10.5194/bg-10-4405-2013, https://doi.org/10.5194/bg-10-4405-2013, 2013
Related subject area
Biodiversity and Ecosystem Function: Marine
Characterization of particle-associated and free-living bacterial and archaeal communities along the water columns of the South China Sea
Adult life strategy affects distribution patterns in abyssal isopods – implications for conservation in Pacific nodule areas
Diversity and distribution of nitrogen fixation genes in the oxygen minimum zones of the world oceans
Structure and function of epipelagic mesozooplankton and their response to dust deposition events during the spring PEACETIME cruise in the Mediterranean Sea
Distribution of planktonic foraminifera in the subtropical South Atlantic: depth hierarchy of controlling factors
Technical note: Estimating light-use efficiency of benthic habitats using underwater O2 eddy covariance
Ocean acidification reduces growth and grazing impact of Antarctic heterotrophic nanoflagellates
Dynamics of environmental conditions during the decline of a Cymodocea nodosa meadow
Megafauna community assessment of polymetallic-nodule fields with cameras: platform and methodology comparison
A meta-analysis on environmental drivers of marine phytoplankton C : N : P
Plant genotype determines biomass response to flooding frequency in tidal wetlands
Spatial and temporal variability in the response of phytoplankton and prokaryotes to B-vitamin amendments in an upwelling system
Biogeography and community structure of abyssal scavenging Amphipoda (Crustacea) in the Pacific Ocean
Are seamounts refuge areas for fauna from polymetallic nodule fields?
Ocean deoxygenation and copepods: coping with oxygen minimum zone variability
Unexpected high abyssal ophiuroid diversity in polymetallic nodule fields of the northeast Pacific Ocean and implications for conservation
Population dynamics of modern planktonic foraminifera in the western Barents Sea
Foraminiferal community response to seasonal anoxia in Lake Grevelingen (the Netherlands)
Changes in population depth distribution and oxygen stratification explain the current low condition of the Eastern Baltic Sea cod (Gadus morhua)
Effects of spatial variability on the exposure of fish to hypoxia: a modeling analysis for the Gulf of Mexico
Light availability modulates the effects of warming in a marine N2 fixer
SiR-actin-labelled granules in foraminifera: patterns, dynamics, and hypotheses
Alpha and beta diversity patterns of polychaete assemblages across the nodule province of the eastern Clarion-Clipperton Fracture Zone (equatorial Pacific)
Dimensions of marine phytoplankton diversity
The Arctic picoeukaryote Micromonas pusilla benefits from ocean acidification under constant and dynamic light
Factors controlling the competition between Phaeocystis and diatoms in the Southern Ocean
Flux variability of phyto- and zooplankton communities in the Mauritanian coastal upwelling between 2003 and 2008
Environmental factors influencing benthic communities in the oxygen minimum zones on the Angolan and Namibian margins
Hypoxia in mangroves: occurrence and impact on valuable tropical fish habitat
Calcification and latitudinal distribution of extant coccolithophores across the Drake Passage during late austral summer 2016
Distribution of free-living marine nematodes in the Clarion–Clipperton Zone: implications for future deep-sea mining scenarios
Characterizing photosymbiosis in modern planktonic foraminifera
Identifying areas prone to coastal hypoxia – the role of topography
Observations of deep-sea fishes and mobile scavengers from the abyssal DISCOL experimental mining area
Ocean acidification and high irradiance stimulate the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila
Rates and drivers of Red Sea plankton community metabolism
Reviews and syntheses: Insights into deep-sea food webs and global environmental gradients revealed by stable isotope (δ15N, δ13C) and fatty acid trophic biomarkers
Light-dependent calcification in Red Sea giant clam Tridacna maxima
Responses of an abyssal meiobenthic community to short-term burial with crushed nodule particles in the south-east Pacific
A trait-based modelling approach to planktonic foraminifera ecology
Physiological and biochemical responses of Emiliania huxleyi to ocean acidification and warming are modulated by UV radiation
Enhanced microbial nitrogen transformations in association with macrobiota from the rocky intertidal
Meso-zooplankton structure and functioning in the western tropical South Pacific along the 20th parallel south during the OUTPACE survey (February–April 2015)
Impact of carbonate saturation on large Caribbean benthic foraminifera assemblages
Factors influencing test porosity in planktonic foraminifera
Coral reef carbonate budgets and ecological drivers in the central Red Sea – a naturally high temperature and high total alkalinity environment
The ability of macroalgae to mitigate the negative effects of ocean acidification on four species of North Atlantic bivalve
Geophysical and geochemical controls on the megafaunal community of a high Arctic cold seep
The Arctic picoeukaryote Micromonas pusilla benefits synergistically from warming and ocean acidification
Abyssal plain faunal carbon flows remain depressed 26 years after a simulated deep-sea mining disturbance
Jiangtao Li, Lingyuan Gu, Shijie Bai, Jie Wang, Lei Su, Bingbing Wei, Li Zhang, and Jiasong Fang
Biogeosciences, 18, 113–133, https://doi.org/10.5194/bg-18-113-2021, https://doi.org/10.5194/bg-18-113-2021, 2021
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Few studies have focused on the particle-attached (PA) and free-living (FL) microbes of the deep ocean. Here we determined PA and FL microbial communities along depth profiles of the SCS. PA and FL fractions accommodated divergent microbial compositions, and most of them are potentially generalists with PA and FL dual lifestyles. A potential vertical connectivity between surface-specific microbes and those in the deep ocean was indicated, likely through microbial attachment to sinking particles.
Saskia Brix, Karen J. Osborn, Stefanie Kaiser, Sarit B. Truskey, Sarah M. Schnurr, Nils Brenke, Marina Malyutina, and Pedro Martinez Arbizu
Biogeosciences, 17, 6163–6184, https://doi.org/10.5194/bg-17-6163-2020, https://doi.org/10.5194/bg-17-6163-2020, 2020
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The Clarion–Clipperton Fracture Zone (CCZ) located in the Pacific is commercially the most important area of proposed manganese nodule mining. Extraction of this will influence the life and distribution of small deep-sea invertebrates like peracarid crustaceans, of which >90 % are undescribed species new to science. We are doing a species delimitation approach as baseline for an ecological interpretation of species distribution and discuss the results in light of future deep-sea conservation.
Amal Jayakumar and Bess B. Ward
Biogeosciences, 17, 5953–5966, https://doi.org/10.5194/bg-17-5953-2020, https://doi.org/10.5194/bg-17-5953-2020, 2020
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Diversity and community composition of nitrogen-fixing microbes in the three main oxygen minimum zones of the world ocean were investigated using nifH clone libraries. Representatives of three main clusters of nifH genes were detected. Sequences were most diverse in the surface waters. The most abundant OTUs were affiliated with Alpha- and Gammaproteobacteria. The sequences were biogeographically distinct and the dominance of a few OTUs was commonly observed in OMZs in this (and other) studies.
Guillermo Feliú, Marc Pagano, Pamela Hidalgo, and François Carlotti
Biogeosciences, 17, 5417–5441, https://doi.org/10.5194/bg-17-5417-2020, https://doi.org/10.5194/bg-17-5417-2020, 2020
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The impact of Saharan dust deposition events on the Mediterranean Sea ecosystem was studied during a basin-scale survey (PEACETIME cruise, May–June 2017). Short-term responses of the zooplankton community were observed after episodic dust deposition events, highlighting the impact of these events on productivity up to the zooplankton level in the poorly fertilized pelagic ecosystems of the southern Mediterranean Sea.
Douglas Lessa, Raphaël Morard, Lukas Jonkers, Igor M. Venancio, Runa Reuter, Adrian Baumeister, Ana Luiza Albuquerque, and Michal Kucera
Biogeosciences, 17, 4313–4342, https://doi.org/10.5194/bg-17-4313-2020, https://doi.org/10.5194/bg-17-4313-2020, 2020
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We observed that living planktonic foraminifera had distinct vertically distributed communities across the Subtropical South Atlantic. In addition, a hierarchic alternation of environmental parameters was measured to control the distribution of planktonic foraminifer's species depending on the water depth. This implies that not only temperature but also productivity and subsurface processes are signed in fossil assemblages, which could be used to perform paleoceanographic reconstructions.
Karl M. Attard and Ronnie N. Glud
Biogeosciences, 17, 4343–4353, https://doi.org/10.5194/bg-17-4343-2020, https://doi.org/10.5194/bg-17-4343-2020, 2020
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Light-use efficiency defines the ability of primary producers to convert sunlight energy to primary production. This report provides a framework to compute hourly and daily light-use efficiency using underwater eddy covariance, a recent technological development that produces habitat-scale rates of primary production for many different habitat types. The approach, tested on measured flux data, provides a useful means to compare habitat productivity across time and space.
Stacy Deppeler, Kai G. Schulz, Alyce Hancock, Penelope Pascoe, John McKinlay, and Andrew Davidson
Biogeosciences, 17, 4153–4171, https://doi.org/10.5194/bg-17-4153-2020, https://doi.org/10.5194/bg-17-4153-2020, 2020
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Our study showed how ocean acidification can exert both direct and indirect influences on the interactions among trophic levels within the microbial loop. Microbial grazer abundance was reduced at CO2 concentrations at and above 634 µatm, while microbial communities increased in abundance, likely due to a reduction in being grazed. Such changes in predator–prey interactions with ocean acidification could have significant effects on the food web and biogeochemistry in the Southern Ocean.
Mirjana Najdek, Marino Korlević, Paolo Paliaga, Marsej Markovski, Ingrid Ivančić, Ljiljana Iveša, Igor Felja, and Gerhard J. Herndl
Biogeosciences, 17, 3299–3315, https://doi.org/10.5194/bg-17-3299-2020, https://doi.org/10.5194/bg-17-3299-2020, 2020
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The response of Cymodocea nodosa to environmental changes was reported during a 15-month period. The meadow decline was triggered in spring by the simultaneous reduction of available light in the water column and the creation of anoxic conditions in the rooted area. This disturbance was critical for the plant since it took place during its recruitment phase when metabolic needs are maximal and stored reserves minimal. The loss of such habitat-forming seagrass is a major environmental concern.
Timm Schoening, Autun Purser, Daniel Langenkämper, Inken Suck, James Taylor, Daphne Cuvelier, Lidia Lins, Erik Simon-Lledó, Yann Marcon, Daniel O. B. Jones, Tim Nattkemper, Kevin Köser, Martin Zurowietz, Jens Greinert, and Jose Gomes-Pereira
Biogeosciences, 17, 3115–3133, https://doi.org/10.5194/bg-17-3115-2020, https://doi.org/10.5194/bg-17-3115-2020, 2020
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Seafloor imaging is widely used in marine science and industry to explore and monitor areas of interest. The selection of the most appropriate imaging gear and deployment strategy depends on the target application. This paper compares imaging platforms like autonomous vehicles or towed camera frames and different deployment strategies of those in assessing the megafauna abundance of polymetallic-nodule fields. The deep-sea mining industry needs that information for robust impact monitoring.
Tatsuro Tanioka and Katsumi Matsumoto
Biogeosciences, 17, 2939–2954, https://doi.org/10.5194/bg-17-2939-2020, https://doi.org/10.5194/bg-17-2939-2020, 2020
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We conducted an extensive literature survey (meta-analysis) on how the C : N : P ratio varies with change in key environmental drivers. We found that the expected reduction in nutrients and warming under the future climate change scenario is likely to result in increased C : P and C : N of marine phytoplankton. Further, our findings highlight the greater stoichiometric plasticity of eukaryotes over prokaryotes, which provide us insights on how to understand and model plankton.
Svenja Reents, Peter Mueller, Hao Tang, Kai Jensen, and Stefanie Nolte
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-99, https://doi.org/10.5194/bg-2020-99, 2020
Revised manuscript accepted for BG
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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 to take intraspecific differences into account when evaluating ecosystem resilience to accelerated sea level rise.
Vanessa Joglar, Antero Prieto, Esther Barber-Lluch, Marta Hernández-Ruiz, Emilio Fernández, and Eva Teira
Biogeosciences, 17, 2807–2823, https://doi.org/10.5194/bg-17-2807-2020, https://doi.org/10.5194/bg-17-2807-2020, 2020
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Coastal marine ecosystems are among the most ecologically and economically productive areas providing a large fraction of ecosystem goods and services to human populations, and B vitamins have long been considered important growth factors for phytoplankton. Our findings indicate that the responses of microbial plankton to B-vitamin supply are mainly driven by the bacterial community composition and that microbial plankton in this area seems to be well adapted to cope with B-vitamin shortage.
Tasnim Patel, Henri Robert, Cedric D'Udekem D'Acoz, Koen Martens, Ilse De Mesel, Steven Degraer, and Isa Schön
Biogeosciences, 17, 2731–2744, https://doi.org/10.5194/bg-17-2731-2020, https://doi.org/10.5194/bg-17-2731-2020, 2020
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Exploitation of deep-sea resources in one of the largest ecosystems on the planet has rendered research of its biodiversity more urgent than ever before. We investigated the known habitats and connectivity of deep-sea scavenging amphipods and obtained important knowledge about several species. We also demonstrated that a long-term disturbance experiment has possibly reduced amphipod biodiversity. These data and further sampling expeditions are instrumental for formulating sustainable policies.
Daphne Cuvelier, Pedro A. Ribeiro, Sofia P. Ramalho, Daniel Kersken, Pedro Martinez Arbizu, and Ana Colaço
Biogeosciences, 17, 2657–2680, https://doi.org/10.5194/bg-17-2657-2020, https://doi.org/10.5194/bg-17-2657-2020, 2020
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Polymetallic nodule mining will remove hard substrata from the abyssal deep-sea floor. The only neighbouring ecosystems featuring hard substratum are seamounts, and their inhabiting fauna could aid in recovery post-mining. Nevertheless, first observations of seamount megafauna were very different from nodule-associated megafauna and showed little overlap. The possible uniqueness of these ecosystems implies that they should be included in management plans for the conservation of biodiversity.
Karen F. Wishner, Brad Seibel, and Dawn Outram
Biogeosciences, 17, 2315–2339, https://doi.org/10.5194/bg-17-2315-2020, https://doi.org/10.5194/bg-17-2315-2020, 2020
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Increasing deoxygenation and oxygen minimum zone expansion are consequences of global warming. Copepod species had different vertical distribution strategies and physiologies associated with oxygen profile variability (0–1000 m). Species (1) changed vertical distributions and maximum abundance depth, (2) shifted diapause depth, (3) changed diel vertical migration depths, or (4) changed epipelagic depth range in the aerobic mixed layer. Present-day variability helps predict future scenarios.
Magdalini Christodoulou, Timothy O'Hara, Andrew F. Hugall, Sahar Khodami, Clara F. Rodrigues, Ana Hilario, Annemiek Vink, and Pedro Martinez Arbizu
Biogeosciences, 17, 1845–1876, https://doi.org/10.5194/bg-17-1845-2020, https://doi.org/10.5194/bg-17-1845-2020, 2020
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Unexpectedly high diversity was revealed in areas licenced for polymetallic nodule mining exploration in the Pacific Ocean. For the first time, a comprehensive reference library including 287 novel ophiuroid sequences allocated to 43 species was produced. Differences in food availability along the nodule province of CCZ were reflected in the biodiversity patterns observed. The APEI3's dissimilarity with the exploration contract areas questions its ability to serve as a biodiversity reservoir.
Julie Meilland, Hélène Howa, Vivien Hulot, Isaline Demangel, Joëlle Salaün, and Thierry Garlan
Biogeosciences, 17, 1437–1450, https://doi.org/10.5194/bg-17-1437-2020, https://doi.org/10.5194/bg-17-1437-2020, 2020
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This study reports on planktonic foraminifera (PF) diversity and distribution in the Barents Sea. The species Globigerinita uvula and Turborotalita quinqueloba dominate the water column while surface sediments are dominated by Neogloboquadrina pachyderma. We hypothesize the unusual dominance of G. uvula in the water to be a seasonal signal or a result of climate forcing. Size-normalized-protein concentrations of PF show a northward decrease, suggesting biomass to vary with the environment.
Julien Richirt, Bettina Riedel, Aurélia Mouret, Magali Schweizer, Dewi Langlet, Dorina Seitaj, Filip J. R. Meysman, Caroline P. Slomp, and Frans J. Jorissen
Biogeosciences, 17, 1415–1435, https://doi.org/10.5194/bg-17-1415-2020, https://doi.org/10.5194/bg-17-1415-2020, 2020
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The paper presents the response of benthic foraminiferal communities to seasonal absence of oxygen coupled with the presence of hydrogen sulfide, considered very harmful for several living organisms.
Our results suggest that the foraminiferal community mainly responds as a function of the duration of the adverse conditions.
This knowledge is especially useful to better understand the ecology of benthic foraminifera but also in the context of palaeoceanographic interpretations.
Michele Casini, Martin Hansson, Alessandro Orio, and Karin Limburg
Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-74, https://doi.org/10.5194/bg-2020-74, 2020
Revised manuscript accepted for BG
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In the past twenty years the condition of the Eastern Baltic cod has dropped with large implications for the fishery. Our results show that during the same time, the cod population has moved deeper, while low-oxygenated waters detrimental for cod growth have shallowed. Cod has thus dwelled more in detrimental waters, which relates to 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 Discuss., https://doi.org/10.5194/bg-2020-51, https://doi.org/10.5194/bg-2020-51, 2020
Revised manuscript accepted for BG
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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, that when combined with spatial variability of DO, can result in an underestimation of exposure when averaged.
Xiangqi Yi, Fei-Xue Fu, David A. Hutchins, and Kunshan Gao
Biogeosciences, 17, 1169–1180, https://doi.org/10.5194/bg-17-1169-2020, https://doi.org/10.5194/bg-17-1169-2020, 2020
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Combined effects of warming and light intensity were estimated in N2-fixing cyanobacterium Trichodesmium. Its physiological responses to warming were significantly modulated by light, with growth peaking at 27 °C under the light-saturating condition but being non-responsive across the range of 23–31 °C under the light-limiting condition. Light shortage also weakened the acclimation ability of Trichodesmium to warming, making light-limited Trichodesmium more sensitive to acute temperature change.
Jan Goleń, Jarosław Tyszka, Ulf Bickmeyer, and Jelle Bijma
Biogeosciences, 17, 995–1011, https://doi.org/10.5194/bg-17-995-2020, https://doi.org/10.5194/bg-17-995-2020, 2020
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We studied the organisation and dynamics of actin in foraminifera. Actin is one of the key structural proteins in most lifeforms. Our investigations show that in foraminifera it forms small granules, around 1 µm in diameter, that display rapid movement. This granularity is unusual in comparison to other organisms. We suppose that these granules are most likely involved in the formation of all types of pseudopods responsible for movement, food capturing, biomineralisation, and other functions.
Paulo Bonifácio, Pedro Martínez Arbizu, and Lénaïck Menot
Biogeosciences, 17, 865–886, https://doi.org/10.5194/bg-17-865-2020, https://doi.org/10.5194/bg-17-865-2020, 2020
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The patterns observed in the composition of polychaete assemblages were attributed to variations in food supply at the regional scale and nodule density at the local scale. The high levels of species replacement were mainly driven by rare species, leading to regional species pool estimates between 498 and 240 000 species. The high proportion of singletons seems reflect an under-sampling bias that is currently preventing the assessment of potential biodiversity loss due to nodule mining.
Stephanie Dutkiewicz, Pedro Cermeno, Oliver Jahn, Michael J. Follows, Anna E. Hickman, Darcy A. A. Taniguchi, and Ben A. Ward
Biogeosciences, 17, 609–634, https://doi.org/10.5194/bg-17-609-2020, https://doi.org/10.5194/bg-17-609-2020, 2020
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Phytoplankton are an essential component of the marine food web and earth's carbon cycle. We use observations, ecological theory and a unique trait-based ecosystem model to explain controls on patterns of marine phytoplankton biodiversity. We find that different dimensions of diversity (size classes, biogeochemical functional groups, thermal norms) are controlled by a disparate combination of mechanisms. This may explain why previous studies of phytoplankton diversity had conflicting results.
Emily White, Clara J. M. Hoppe, and Björn Rost
Biogeosciences, 17, 635–647, https://doi.org/10.5194/bg-17-635-2020, https://doi.org/10.5194/bg-17-635-2020, 2020
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The Arctic picoeukaryote Micromonas pusilla was acclimated to two pCO2 levels under a constant and a dynamic light, simulating more realistic light fields. M. pusilla was able to benefit from ocean acidification with an increase in growth rate, irrespective of the light regime. In dynamic light M. pusilla optimised its photophysiology for effective light usage during both low- and high-light periods. This highlights M. pusilla is likely to cope well with future conditions in the Arctic Ocean.
Cara Nissen and Meike Vogt
Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-488, https://doi.org/10.5194/bg-2019-488, 2020
Revised manuscript accepted for BG
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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 variability of Phaeocystis and diatoms impacts the seasonality of carbon export fluxes, with ramifications for nutrient cycling and food web dynamics.
Oscar E. Romero, Karl-Heinz Baumann, Karin A. F. Zonneveld, Barbara Donner, Jens Hefter, Bambaye Hamady, Vera Pospelova, and Gerhard Fischer
Biogeosciences, 17, 187–214, https://doi.org/10.5194/bg-17-187-2020, https://doi.org/10.5194/bg-17-187-2020, 2020
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Monitoring of the multiannual evolution of populations representing different trophic levels allows for obtaining insights into the impact of climate variability in marine coastal upwelling ecosystems. By using a multiyear, continuous (1,900 d) sediment trap record, we assess the dynamics and fluxes of calcareous, organic and siliceous microorganisms off Mauritania (NW Africa). The experiment allowed for the recognition of a general sequence of seasonal variations of the main populations.
Ulrike Hanz, Claudia Wienberg, Dierk Hebbeln, Gerard Duineveld, Marc Lavaleye, Katriina Juva, Wolf-Christian Dullo, André Freiwald, Leonardo Tamborrino, Gert-Jan Reichart, Sascha Flögel, and Furu Mienis
Biogeosciences, 16, 4337–4356, https://doi.org/10.5194/bg-16-4337-2019, https://doi.org/10.5194/bg-16-4337-2019, 2019
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Along the Namibian and Angolan margins, low oxygen conditions do not meet environmental ranges for cold–water corals and hence are expected to be unsuitable habitats. Environmental conditions show that tidal movements deliver water with more oxygen and high–quality organic matter, suggesting that corals compensate unfavorable conditions with availability of food. With the expected expansion of oxygen minimum zones in the future, this study provides an example how ecosystems cope with extremes.
Alexia Dubuc, Ronald Baker, Cyril Marchand, Nathan J. Waltham, and Marcus Sheaves
Biogeosciences, 16, 3959–3976, https://doi.org/10.5194/bg-16-3959-2019, https://doi.org/10.5194/bg-16-3959-2019, 2019
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Little is known about how hypoxia influences mangrove fish assemblages. In situ video observations reveal species-specific avoidance strategies in response to developing hypoxia in a mangrove forest. Taxa commonly using mangroves could withstand hypoxia, while others usually associated with reef habitats were not recorded below 70 % saturation. These results suggest that hypoxia is an important factor shaping mangrove fish assemblages and could explain the low species richness usually observed.
Mariem Saavedra-Pellitero, Karl-Heinz Baumann, Miguel Ángel Fuertes, Hartmut Schulz, Yann Marcon, Nele Manon Vollmar, José-Abel Flores, and Frank Lamy
Biogeosciences, 16, 3679–3702, https://doi.org/10.5194/bg-16-3679-2019, https://doi.org/10.5194/bg-16-3679-2019, 2019
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Open ocean phytoplankton include coccolithophore algae, a key element in carbon cycle regulation with important feedbacks to the climate system. We document latitudinal variability in both coccolithophore assemblage and the mass variation in one particular species, Emiliania huxleyi, for a transect across the Drake Passage (in the Southern Ocean). Coccolithophore abundance, diversity and maximum depth habitat decrease southwards, coinciding with changes in the predominant E. huxleyi morphotypes.
Freija Hauquier, Lara Macheriotou, Tania N. Bezerra, Great Egho, Pedro Martínez Arbizu, and Ann Vanreusel
Biogeosciences, 16, 3475–3489, https://doi.org/10.5194/bg-16-3475-2019, https://doi.org/10.5194/bg-16-3475-2019, 2019
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Future mining operations in the deep sea provide a source of scientific uncertainty and call for detailed study of the ecosystem. We investigated one of the most diverse and abundant taxa present in deep-sea sediments, nematodes, and demonstrate the importance of sediment attributes for their communities. Especially species that are less common and have a limited spatial distribution will be vulnerable to mining-induced changes. Our findings can serve as a reference for future impact studies.
Haruka Takagi, Katsunori Kimoto, Tetsuichi Fujiki, Hiroaki Saito, Christiane Schmidt, Michal Kucera, and Kazuyoshi Moriya
Biogeosciences, 16, 3377–3396, https://doi.org/10.5194/bg-16-3377-2019, https://doi.org/10.5194/bg-16-3377-2019, 2019
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Photosymbiosis (endosymbiosis with algae) is an evolutionary important ecology for many marine organisms but has poorly been identified among planktonic foraminifera. In this study, we identified and characterized photosymbiosis of various species of planktonic foraminifera by focusing on their photosynthesis–related features. We finally proposed a new framework showing a potential strength of photosymbiosis, which will serve as a basis for future ecological studies of planktonic foraminifera.
Elina A. Virtanen, Alf Norkko, Antonia Nyström Sandman, and Markku Viitasalo
Biogeosciences, 16, 3183–3195, https://doi.org/10.5194/bg-16-3183-2019, https://doi.org/10.5194/bg-16-3183-2019, 2019
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Our understanding of the drivers of hypoxia fundamentally hinges on patterns of water circulation and vertical mixing that can be difficult to resolve in coastal regions. We identified areas prone to oxygen loss in a complex marine area without knowledge of biogeochemical properties, using only parameters which describe the enclosed seafloors with restricted water exchange. Our approach could help nutrient abatement measures and pinpoint areas where management actions are most urgently needed.
Jeffrey C. Drazen, Astrid B. Leitner, Sage Morningstar, Yann Marcon, Jens Greinert, and Autun Purser
Biogeosciences, 16, 3133–3146, https://doi.org/10.5194/bg-16-3133-2019, https://doi.org/10.5194/bg-16-3133-2019, 2019
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We investigated the fish and scavenger community after a deep seafloor disturbance experiment intended to simulate the effects of deep-sea mining. Fish density returned to background levels after several years; however the dominant fish was rarely found in ploughed habitat after 26 years. Given the significantly larger scale of industrial mining, these results could translate to population-level effects. The abyssal fish community at the site was similar to that in the Clarion–Clipperton Zone.
Scarlett Trimborn, Silke Thoms, Pascal Karitter, and Kai Bischof
Biogeosciences, 16, 2997–3008, https://doi.org/10.5194/bg-16-2997-2019, https://doi.org/10.5194/bg-16-2997-2019, 2019
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Ecophysiological studies on Antarctic cryptophytes to assess whether climatic changes such as ocean acidification and enhanced stratification affect their growth in Antarctic coastal waters in the future are lacking so far. Our results reveal beneficial effects of ocean acidification in conjunction with enhanced irradiance on growth and photosynthesis of the Antarctic cyrptophyte Geminigera cryophila. Hence, cryptophytes such as G. cryophila may be potential winners of these climatic changes.
Daffne C. López-Sandoval, Katherine Rowe, Paloma Carillo-de-Albonoz, Carlos M. Duarte, and Susana Agustí
Biogeosciences, 16, 2983–2995, https://doi.org/10.5194/bg-16-2983-2019, https://doi.org/10.5194/bg-16-2983-2019, 2019
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We addressed how the intertwined effect of temperature and nutrients modulates the metabolic response of planktonic communities in the Red Sea, one of the warmest seas on earth. Our study unveiled that photosynthesis increases at a faster pace than respiration rates for this group of organisms formed by microalgae, bacteria, and drifting animals. This anomaly is likely due to the nature of the basin where the warmest waters are frequently enriched with nutrients, which favours microalgae growth.
Camilla Parzanini, Christopher C. Parrish, Jean-François Hamel, and Annie Mercier
Biogeosciences, 16, 2837–2856, https://doi.org/10.5194/bg-16-2837-2019, https://doi.org/10.5194/bg-16-2837-2019, 2019
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This review synthesized current knowledge of deep-sea food webs and provided a preliminary analysis of global geographic patterns in the biochemical composition of deep-water organisms. Our results revealed both latitudinal and depth wise trends in the biochemical composition of deep-sea animals. In addition, the link across latitudes between surface primary production and deep-water communities was highlighted, which has important implications in the face of global climate change.
Susann Rossbach, Vincent Saderne, Andrea Anton, and Carlos M. Duarte
Biogeosciences, 16, 2635–2650, https://doi.org/10.5194/bg-16-2635-2019, https://doi.org/10.5194/bg-16-2635-2019, 2019
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Giant clams including the species Tridacna maxima are unique among bivalves as they live in symbiosis with unicellular algae and generally function as net photoautotrophs. Light is therefore crucial for these species to thrive. We show that net calcification and photosynthetic rates of T. maxima are light dependent, with maximum rates at conditions comparable to 4 m water depth, reflected also in the depth-related distribution in the Red Sea with maximum abundances in shallow sunlit coral reefs.
Lisa Mevenkamp, Katja Guilini, Antje Boetius, Johan De Grave, Brecht Laforce, Dimitri Vandenberghe, Laszlo Vincze, and Ann Vanreusel
Biogeosciences, 16, 2329–2341, https://doi.org/10.5194/bg-16-2329-2019, https://doi.org/10.5194/bg-16-2329-2019, 2019
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To elucidate the potential effects of crushed nodule particle deposition on abyssal meiobenthos, we covered abyssal soft sediment in the Peru Basin (4200 m depth) with approximately 2 cm of this nodule material for 11 d. About half of the meiobenthos migrated from the sediment into the added material, and nematode feeding type proportions in that added layer were altered. These results considerably contribute to our understanding of the short-term responses of deep-sea meiobenthos to burial.
Maria Grigoratou, Fanny M. Monteiro, Daniela N. Schmidt, Jamie D. Wilson, Ben A. Ward, and Andy Ridgwell
Biogeosciences, 16, 1469–1492, https://doi.org/10.5194/bg-16-1469-2019, https://doi.org/10.5194/bg-16-1469-2019, 2019
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The paper presents a novel study based on the traits of shell size, calcification and feeding behaviour of two planktonic foraminifera life stages using modelling simulations. With the model, we tested the cost and benefit of calcification and explored how the interactions of planktonic foraminifera among other plankton groups influence their biomass under different environmental conditions. Our results provide new insights into environmental controls in planktonic foraminifera ecology.
Shanying Tong, David A. Hutchins, and Kunshan Gao
Biogeosciences, 16, 561–572, https://doi.org/10.5194/bg-16-561-2019, https://doi.org/10.5194/bg-16-561-2019, 2019
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Most previous studies concerning the effects of environmental changes on marine organisms have been carried out under
photosynthetically active radiation onlyconditions, with solar ultraviolet radiation (UVR) not being considered. In this study, we found that UVR can counteract the negative effects of the
greenhousetreatment on the calcification rate to photosynthesis rate ratio, and may be a key stressor when considering the impacts of future greenhouse conditions on E. huxleyi.
Catherine A. Pfister and Mark A. Altabet
Biogeosciences, 16, 193–206, https://doi.org/10.5194/bg-16-193-2019, https://doi.org/10.5194/bg-16-193-2019, 2019
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Microbial assemblages on host plants and animals are an increasingly recognized biological phenomenon. We present evidence that microbes in association with mussels and seaweeds are contributing greatly to nitrogen cycling in coastal marine areas, often many times that of the microbes that are simply free-living in seawater. The addition of dissolved organic carbon increased nutrient uptake by microbes, suggesting that coastal species enhance microbial metabolism through resource provisioning.
François Carlotti, Marc Pagano, Loïc Guilloux, Katty Donoso, Valentina Valdés, Olivier Grosso, and Brian P. V. Hunt
Biogeosciences, 15, 7273–7297, https://doi.org/10.5194/bg-15-7273-2018, https://doi.org/10.5194/bg-15-7273-2018, 2018
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The paper characterizes the zooplankton community and plankton food web processes between New Caledonia and Tahiti (tropical South Pacific) during the austral summer 2015. In this region, the pelagic production depends on N2 fixation by diazotroph microorganisms on which the zooplankton community feeds, supporting a pelagic food chain ending with valuable tuna fisheries. We estimated a contribution of up to 75 % of diazotroph‐derived nitrogen to zooplankton biomass in the Melanesian archipelago.
Ana Martinez, Laura Hernández-Terrones, Mario Rebolledo-Vieyra, and Adina Paytan
Biogeosciences, 15, 6819–6832, https://doi.org/10.5194/bg-15-6819-2018, https://doi.org/10.5194/bg-15-6819-2018, 2018
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Our study at low-pH submarine springs suggests that ocean acidification may reduce the number of Caribbean benthic foraminifera, particularly those species that form carbonate shells. This may have subsequent repercussions on the global carbon cycle and marine food webs that depend on benthic foraminifera.
Janet E. Burke, Willem Renema, Michael J. Henehan, Leanne E. Elder, Catherine V. Davis, Amy E. Maas, Gavin L. Foster, Ralf Schiebel, and Pincelli M. Hull
Biogeosciences, 15, 6607–6619, https://doi.org/10.5194/bg-15-6607-2018, https://doi.org/10.5194/bg-15-6607-2018, 2018
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Metabolic rates are sensitive to environmental conditions and can skew geochemical measurements. However, there is no way to track these rates through time. Here we investigate the controls of test porosity in planktonic foraminifera (organisms commonly used in paleoclimate studies) as a potential proxy for metabolic rate. We found that the porosity varies with body size and temperature, two key controls on metabolic rate, and that it can respond to rapid changes in ambient temperature.
Anna Roik, Till Röthig, Claudia Pogoreutz, Vincent Saderne, and Christian R. Voolstra
Biogeosciences, 15, 6277–6296, https://doi.org/10.5194/bg-15-6277-2018, https://doi.org/10.5194/bg-15-6277-2018, 2018
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In this study we collected in situ accretion/erosion rates and abiotic/biotic variables to estimate carbonate budgets and ecological drivers of coral reef growth in the central Red Sea. Our data suggest that reef growth is comparable to estimates of other regions, but the erosive forces in the Red Sea are not as pronounced. Comparison with recent data suggests that Red Sea reef growth might not have decreased over the past decades, despite warming, calling for more detailed investigations.
Craig S. Young and Christopher J. Gobler
Biogeosciences, 15, 6167–6183, https://doi.org/10.5194/bg-15-6167-2018, https://doi.org/10.5194/bg-15-6167-2018, 2018
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Photosynthetic activity and/or nitrate assimilation by the macroalgae Ulva buffered carbonate chemistry and yielded enhanced growth of bivalves by mitigating the harmful effects of elevated CO2 levels. This benefit was not limited to acidified conditions, as evidenced by increased bivalve growth in the presence of Ulva within ambient CO2 treatments. The ability of macroalgae to buffer carbonate chemistry may be increasingly important for calcifying organisms vulnerable to ocean acidification.
Arunima Sen, Emmelie K. L. Åström, Wei-Li Hong, Alexey Portnov, Malin Waage, Pavel Serov, Michael L. Carroll, and JoLynn Carroll
Biogeosciences, 15, 4533–4559, https://doi.org/10.5194/bg-15-4533-2018, https://doi.org/10.5194/bg-15-4533-2018, 2018
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Diverse benthic communities populate a site of methane seepage on the Arctic shelf. Despite a likely reliance on sulfide as an energy source, Oligobrachia worm distributions did not correlate with sulfide concentrations. We suggest that sulfide and carbon generation linked to microbial activity and high methane fluxes determines their presence or absence. We discuss the site and our results within the context of Arctic ecology and economy as well as the biology of seafloor hydrocarbon seeps.
Clara Jule Marie Hoppe, Clara M. Flintrop, and Björn Rost
Biogeosciences, 15, 4353–4365, https://doi.org/10.5194/bg-15-4353-2018, https://doi.org/10.5194/bg-15-4353-2018, 2018
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Responses of the Arctic microalgae Micromonas pusilla to different pCO2 levels were investigated at two temperatures. We observed that warming and ocean acidification (OA) synergistically increased growth rates. Furthermore, elevated temperature shifted the pCO2 optimum of biomass production to higher levels. This seem to be caused by more efficient photosynthesis under warmer and more acidic conditions. Our findings explain the dominance of picoeukaryotes frequently observed in OA experiments.
Tanja Stratmann, Lidia Lins, Autun Purser, Yann Marcon, Clara F. Rodrigues, Ascensão Ravara, Marina R. Cunha, Erik Simon-Lledó, Daniel O. B. Jones, Andrew K. Sweetman, Kevin Köser, and Dick van Oevelen
Biogeosciences, 15, 4131–4145, https://doi.org/10.5194/bg-15-4131-2018, https://doi.org/10.5194/bg-15-4131-2018, 2018
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Extraction of polymetallic nodules will have negative impacts on the deep-sea ecosystem, but it is not known whether the ecosystem is able to recover from them. Therefore, in 1989 a sediment disturbance experiment was conducted in the Peru Basin to mimic deep-sea mining. Subsequently, the experimental site was re-visited 5 times to monitor the recovery of fauna. We developed food-web models for all 5 time steps and found that, even after 26 years, carbon flow in the system differs significantly.
Cited articles
Ambler, J. W. and Frost, B. W.: The feeding behavior of a predatory
planktonic copepod, Torlanus discaudatus, Limnol. Oceanogr., 19,
446–451, 1974.
Antonio, E. S., Kasai, A., Ueno, M., Kurikawa, Y., Tsuchiya, K., Toyohara,
H., Inshihi, Y., Yokoyama, H., and Yamashita, Y.: Consumption of terrestrial
organic matter by estuarine molluscs determined by analysis of their stable
isotopes and cellulase activity, Estuar. Coast. Shelf S., 86, 401–407, 2010.
Baek, S. H., Kim, D., Son, M., Yun, S. M., and Kim, Y. O.: Seasonal
distribution of phytoplankton assemblages and nutrient-enriched bioassays as
indicators of nutrient limitation of phytoplankton growth in Gwangyang Bay,
Korea, Estuar. Coast. Shelf S., 163, 265–278, 2015.
Berk, S. G., Brownlee, D. C., Heinle, D. R., Kling, H. J., and Colwell, R.
R.: Ciliates as a food source for marine planktonic copepods, Microb. Ecol.,
4, 27–40, 1977.
Calbet, A. and Saiz, E.: The ciliate-copepod link in marine ecosystems,
Aquat. Microb. Ecol., 38, 157–167, 2005.
Checkley, D. M. and Entzeroth, L. C.: Elemental and isotopic fractionation of
carbon and nitrogen by marine, planktonic copepods and implications to the
marine nitrogen cycle, J. Plankton Res., 7, 553–568, 1985.
Checkley, D. M. and Miller, C. A.: Nitrogen isotope fractionation by oceanic
zooplankton, Deep-Sea Res. Pt. I, 36, 1449–1456, 1989.
Chen, M. and Liu, H.: Experimental simulation of trophic interactions among
omnivorous copepods, heterotrophic dinoflagellates and diatoms, J. Exp. Mar.
Biol. Ecol., 403, 65–74, 2011.
Chen, M., Liu, H., and Li, H.: Effect of mesozooplankton feeding selectivity
on the dynamics of algae in the presence of intermediate grazers a laboratory
simulation, Mar. Ecol.-Prog. Ser., 486, 47–58, 2013.
Chen, M., Liu, H., and Chen, B.: Seasonal variability of mesozooplankton
feeding rates on phytoplankton in subtropical coastal and estuarine waters,
Front. Mar. Sci., 4, 186, https://doi.org/10.3389/fmars.2017.00186, 2017.
Choy, E. J., An, S., and Kang, C. K.: Pathways of organic matter through food
webs of diverse habitats in the regulated Nakdong River estuary (Korea),
Estuar. Coast. Shelf S., 78, 215–226, 2008.
Cifuentes, L. A., Sharp, J. H., and Fogel, M. L.: Stable carbon and nitrogen
isotope biogeochemistry in the Delaware estuary, Limnol. Oceanogr., 33,
1102–1115, 1988.
Conley, W. J. and Turner, J. T.: Omnivory by the coastal marine copepods
Centropages hamatus and Labidocera aestiva, Mar.
Ecol.-Prog. Ser., 241, 113–120, 1985.
Deegan, L. A. and Garritt, R. H.: Evidence for spatial variability in
estuarine food webs, Mar. Ecol.-Prog. Ser., 147, 31–47, 1997.
Fessenden, L. and Cowles, T. J.: Copepod predation on phagotrophic ciliates
in Oregon coastal waters, Mar. Ecol.-Prog. Ser., 107, 103–111, 1994.
Fogel, M. L. and Cifuentes, L. A.: Isotope fractionation during primary
production, in: Organic Geochemistry, edited by: Engel, M. H. and Macko, S.
A., Plenum Press, New York, 73–98, 1993.
Francis, T. B., Schindler, D. E., Holtgrieve, G. W., Larson, E. R.,
Scheuerell, M. D., Semmens, B. X., and Ward, E. J.: Habitat structure
determines resource use by zooplankton in temperate lakes, Ecol. Lett., 14,
364–372, 2011.
Froneman, P. W.: In situ feeding rates of the copepods,
Pseudodiaptomus hessei and Acartia longipatella, in a
temperate, temporarily open/closed Eastern Cape estuary, S. Afr. J. Sci.,
100, 577–583, 2004.
Fry, B.: Conservative mixing of stable isotopes across estuarine salinity
gradients: a conceptual framework for monitoring watershed influences on
downstream fisheries production, Estuar. Coast., 25, 264–271, 2002.
Fry, B.: Stable Isotope Ecology, Springer Science & Business Media, New
York, USA, 2007.
Gearing, J. N., Gearing, P. J., Rudnick, D. T., Requejo, A. G., and Hutchins,
M. J.: Isotopic variability of organic carbon in a phytoplankton-based,
temperate estuary, Geochim. Cosmochim. Ac., 48, 1089–1098, 1984.
Gifford, S. M., Rollwagen-Bollens, G., and Bollens, S. M.: Mesozooplankton
omnivory in the upper San Francisco Estuary, Mar. Ecol.-Prog. Ser., 348,
33–46, 2007.
Gophen, M. and Harris, R. P.: Visual predation by a marine cyclopoid copepod,
Corycaeus anglicus, J. Mar. Biol. Assoc. UK, 61, 391–399, 1981.
Graeve, M., Hagen, W., and Kattner, G.: Herbivorous or omnivorous? On the
significance of lipid compositions as trophic markers in Antarctic copepods,
Deep-Sea Res. Pt. I, 41, 915–924, 1994.
Granger, J., Sigman, D. M., Needoba, J. A., and Harrison, P. J.: Coupled
nitrogen and oxygen isotope fractionation of nitrate during assimilation by
cultures of marine phytoplankton, Limnol. Oceanogr., 49, 1763–1773, 2004.
Grey, J., Jones, R. I., and Sleep, D.: Seasonal changes in the importance of
the source of organic matter to the diet of zooplankton in Loch Ness, as
indicated by stable isotope analysis, Limnol. Oceanogr., 46, 505–513, 2001.
Hada, A. and Uye, S.: Cannibalistic feeding behavior of the brackish-water
copepod Sinocalanus tenellus, J. Plankton. Res., 13, 155–166, 1991.
Hannides, C., Popp, B. N., Landry, M. R., and Graham, B. S.: Quantification
of zooplankton trophic position in the North Pacific Subtropical Gyre using
stable nitrogen isotopes, Limnol. Oceanogr., 54, 50–61, 2009.
Hemminga, M. A. and Mateo, M. A.: Stable carbon isotopes in seagrasses:
variability in ratios and use in ecological studies, Mar. Ecol.-Prog. Ser.,
140, 285–298, 1996.
Herzka, S. Z.: Assessing connectivity of estuarine fishes based on stable
isotope ratio analysis, Estuar. Coast. Shelf S., 64, 58–69, 2005.
Hooff, R. C. and Bollens, S. M.: Functional response and potential predatory
impact of Tortanus dextrilobatus, a carnivorous copepod recently
introduced to the San Francisco Estuary, Mar. Ecol.-Prog. Ser., 277,
167–179, 2004.
Jang, M.-C., Shin, K., Lee, T., and Noh, I.: Feeding selectivity of calanoid
copepods on phytoplankton in Jangmok Bay, South Coast of Korea, Ocean Sci.
J., 45, 101–111, 2010.
Jeffrey, S. W.: Application of pigment methods to oceanography, in:
Phytoplankton Pigments in Oceanography: Guidelines to Modern Methods, edited
by: Jeffery, S. W., Mantoura, R. F. C., and Wright, S. W., UNESCO Publishing,
Paris, France, 127–166, 1997.
Kang, C. K., Kim, J. B., Lee, K. S., Kim, J. B., Lee, P. Y., and Hong, J. S.:
Trophic importance of benthic microalgae to macrozoobenthos in coastal bay
systems in Korea: dual stable C and N isotope analyses, Mar. Ecol.-Prog.
Ser., 259, 79–92, 2003.
Kang, C. K., Choy, E. J., Hur, Y. B., and Myeong, J. I.: Isotopic evidence of
particle size-dependent food partitioning in cocultured sea squirt
Halocynthia roretzi and Pacific oyster Crassostrea gigas,
Aquat. Biol., 6, 289–302, 2009.
Kim, B. J., Ro, Y. J., Jung, K. Y., and Park, K. S.: Numerical modeling of
circulation characteristics in the Kwangyang Bay estuarine system, J. Korean
Soc. Coast. Ocean Eng., 26, 253–266, 2014.
Kim, S. Y., Moon, C. H., Cho, H. J., and Lim, D. I.: Dinoflagellate cysts in
coastal sediments as indicators of eutrophication: a case of Gwangyang Bay,
South Sea of Korea, Estuar. Coast., 32, 1225–233, 2009.
Kiørboe, T., Saiz, E., and Viitasalo, M.: Prey switching behaviour in the
planktonic copepod Acartia tonsa, Mar. Ecol.-Prog. Ser., 143,
65–75, 1996.
Kürten, B., Painting, S. J., Struck, U., Polunin, N. V., and Middelburg,
J. J.: Tracking seasonal changes in North Sea zooplankton trophic dynamics
using stable isotopes, Biogeochemistry, 113, 1–21, 2013.
Kwak, J. H., Han, E., Lee, S. H., Park, H. J., Kim, K. R., and Kang, C. K.: A
consistent structure of phytoplankton communities across the warm–cold
regions of the water mass on a meridional transect in the East/Japan Sea,
Deep-Sea Res. Pt. II, 143, 36–44, 2017.
Kwon, K. Y., Moon, C. H., Kang, C. K., and Kim, Y. N.: Distribution of
particulate organic matters along the salinity gradients in the Seomjin River
estuary, Korean J. Fish. Aquat. Sci., 35, 86–96, 2002.
Kwon, K. Y., Moon, C. H., Lee, J. S., Yang, S. R., Park, M. O., and Lee, P.
Y.: Estuarine behavior and flux of nutrients in the Seomjin River estuary,
The Sea J. Korean Soc. Oceanogr., 9, 153–163, 2004.
Landry, M. R.: Predatory feeding behavior of a marine copepod,
Labidocera trispinosa, Limnol. Oceanogr., 23, 1103–1113, 1978.
Landry, M. R., Lehner-Fournier, J. M., and Fagerness, V. L.: Predatory
feeding behavior of the marine cyclopoid copepod Corycaeus anglicus,
Mar. Biol., 85, 163–169, 1985.
Layman, C. A., Araujo, M. S., Boucek, R., Hammerschlag-Peyer, C. M.,
Harrison, E., Jud, Z. R., and Post, D. M.: Applying stable isotopes to
examine food-web structure: an overview of analytical tools, Biol. Rev., 87,
545–562, 2012.
Lee, S. Y.: Carbon dynamics of Deep Bay, eastern Pearl River estuary, China.
II: Trophic relationship based on carbon-and nitrogen-stable isotopes, Mar.
Ecol.-Prog. Ser., 205, 1–10, 2000.
Lee, Y. W., Park, M. O., Kim, Y. S., Kim, S. S., and Kang, C. K.: Application
of photosynthetic pigment analysis using a HPLC and CHEMTAX program to
studies of/ phytoplankton community composition, The Sea J. Korean Soc.
Oceanogr., 16, 117–124, 2011.
Liu, G. M., Sun, J., Wang, H., Zhang, Y., Yang, B., and Ji, B.: Abundance of
Calanus sinicus across the tidal front in the Yellow Sea, China,
Fish. Oceanogr., 12, 291–298, 2003.
Liu, H., Dagg, M. J., and Strom, S.: Grazing by the calanoid copepod
Neocalanus cristatus on the microbial food web in the coastal Gulf
of Alaska, J. Plankton Res., 27, 647–662, 2005a.
Liu, H., Dagg, M., Wu, C., and Chiang, K.: Mesozooplankton consumption of
microplankton in the Mississippi River plume, with special emphasis on
planktonic ciliates, Mar. Ecol.-Prog. Ser., 286, 133–144, 2005b.
Matson, E. A. and Brinson, M. M.: Stable carbon isotopes and the C : N
ratio in the estuaries of the Pamlico and Neuse Rivers. North Carolina,
Limnol. Oceanogr., 35, 1290–1300, 1990.
McClelland, J. W., Valiela, I., Michener, R. H.: Nitrogen-stable isotope
signatures in estuarine food webs: A record of increasing urbanization in
coastal watersheds, Limnol. Oceanogr., 42, 930–937, 1997.
Melville, A. J. and Connolly, R. M.: Spatial analysis of stable isotope data
to determine primary sources of nutrition for fish, Oecologia, 136, 499–507,
2003.
Michener, R. H. and Kaufman, L.: Stable isotope ratios as tracers in marine
food webs: an update, Stable Isotopes in Ecology and Environmental Science,
2, 238–282, 2007.
Montoya, J. P., Horrigan, S. G., and McCarthy, J. J.: Rapid, storm-induced
changes in the natural abundance of 15N in a planktonic ecosystem,
Chesapeake Bay, USA, Geochim. Cosmochim. Ac., 55, 3627–3638, 1991.
Montoya, J. P., Carpenter, E. J., and Capone, D. G.: Nitrogen fixation and
nitrogen isotope abundances in zooplankton of the oligotrophic North
Atlantic, Limnol. Oceanogr., 47, 1617–1628, 2002.
Moore, J. W. and Semmens, B. X.: Incorporating uncertainty and prior
information into stable isotope mixing models, Ecol. Lett., 11, 470–480,
2008.
Mullin, M. M.: Differential predation by the carnivorous marine copepod
Tortanus discautus, Limnol. Oceanogr., 24, 774–777, 1979.
Needoba, J. A., Waser, N. A., Harrison, P. J., and Calvert, S. E.: Nitrogen
isotope fractionation in 12 species of marine phytoplankton during growth on
nitrate, Mar. Ecol.-Prog. Ser., 255, 81–91, 2003.
Nejstgaard, J. C., Naustvoll, L. J., and Sazhin, A.: Correcting for
underestimation of microzooplankton grazing in bottle incubation experiments
with mesozooplankton, Mar. Ecol.-Prog. Ser., 221, 59–75, 2001.
Park, E. O., Suh, H. L., and Soh, H. Y.: Spatio-temporal distribution of
Acartia (Copepoda: Calanoida) species along a salinity gradient in
the Seomjin River estuary, South Korea, J. Nat. Hist., 49, 2799–2812, 2015.
Park, H. J., Han, E., Lee, Y. J., and Kang, C. K.: Trophic linkage of a
temperate intertidal macrobenthic food web under opportunistic macroalgal
blooms: A stable isotope approach, Mar. Pollut. Bull., 111, 86–94, 2016.
Parnell, A. C., Inger, R., Bearhop, S., and Jackson, A. L.: Source
partitioning using stable isotopes: coping with too much variation, PloS One,
5, e9672, https://doi.org/10.1371/journal.pone.0009672, 2010.
Parnell, A. C., Phillips, D. L., Bearhop, S., Semmens, B. X., Ward, E. J.,
Moore, J. W., Jackson, A. L., Grey, J., Kelly, D. J., and Inger, R.: Bayesian
stable isotope mixing models, Environmetrics, 24, 387–399, 2013.
Phillips, D. L. and Gregg, J. W.: Source partitioning using stable isotopes:
coping with too many sources, Oecologia, 136, 261–269, 2003.
Phillips, D. L. and Koch, P. L.: Incorporating concentration dependence in
stable isotope mixing models, Oecologia, 130, 114–125, 2002.
Post, D. M.: Using stable isotopes to estimate trophic position: models,
methods, and assumptions, Ecology, 83, 703–718, 2002.
Rau, G. H., Teyssie, J. L., Rassoulzadegan, F., and Fowler, S. W.:
13C/12C and 15N/14N variations among size-fractionated
marine particles: implications for their origin and trophic relationships,
Mar. Ecol.-Prog. Ser., 59, 33–38, 1990.
Rolff, C.: Seasonal variation in δ13C and δ15N of
size-fractionated plankton at a coastal station in the northern Baltic
proper, Mar. Ecol.-Prog. Ser., 203, 47–65, 2000.
Rollwagen-Bollens, G. C. and Penry, D. L.: Feeding dynamics of
Acartia spp. copepods in a large, temperate estuary (San Francisco
Bay, CA), Mar. Ecol.-Prog. Ser., 257, 139–158, 2003.
Sato, T., Miyajima, T., Ogawa, H., Umezawa, Y., and Koike, I.: Temporal
variability of stable carbon and nitrogen isotopic composition of
size-fractionated particulate organic matter in the hypertrophic Sumida River
Estuary of Tokyo Bay, Japan, Estuar. Coast. Shelf S., 68, 245–258, 2006.
Sautour, B. and Castel, J.: Feeding behaviour of the coastal copepod
Euterpina acutifrons on small particles, Cah. Biol. Mar., 34,
239–251, 1993.
Schmidt, K., Atkinson, A., Stübing, D., McClelland, J. W., Montoya, J.
P., and Voss, M.: Trophic relationships among Southern Ocean copepods and
krill: some uses and limitations of a stable isotope approach, Limnol.
Oceanogr., 48, 277–289, 2003.
Sell, A. F., van Keuren, D., and Madin, L. P.: Predation by omnivorous
copepods on early developmental stages of Calanus finmarchicus and
Pseudocalanus spp., Limnol. Oceanogr., 46, 953–959, 2001.
Sommer, F., Saage, A., Santer, B., Hansen, T., and Sommer, U.: Linking
foraging strategies of marine calanoid copepods to patterns of nitrogen
stable isotope signatures in a mesocosm study. Mar. Ecol.-Prog. Ser., 286,
99–106, 2005.
Sommer, U. and Sommer, F.: Cladocerans versus copepods: the cause of
contrasting top–down controls on freshwater and marine phytoplankton,
Oecologia, 147, 183–194, 2006.
Stibor, H., Vadstein, O., Diehl, S., Gelzleichter, A., Hansen, T., Hantzsche,
F., Katechakis, A., Lippert, B., Løseth, K., Peters, C., Roederer, W.,
Sandow, M., Sundt-Hansen, L., and Olsen, Y.: Copepods act as a switch between
alternative trophic cascades in marine pelagic food webs, Ecol. Lett., 7,
321–328, 2004.
Tamelander, T., Søreide, J. E., Hop, H., and Carroll, M. L.: Fractionation
of stable isotopes in the Arctic marine copepod Calanus glacialis:
effects on the isotopic composition of marine particulate organic matter, J.
Exp. Mar. Biol. Ecol., 333, 231–240, 2006.
Thornton, S. F. and McManus, J.: Application of organic carbon and nitrogen
stable isotope and C ∕ N ratios as source indicators of organic matter
provenance in estuarine systems: evidence from the Tay Estuary, Scotland,
Estuar. Coast. Shelf S., 38, 219–233, 1994.
Turner, J. T.: Zooplankton feeding ecology: contents of fecal pellets of the
copepods Acartia tonsa and Labidocera aestiva from
continental shelf waters near the mouth of the Mississippi River, Mar. Ecol.,
5, 265–282, 1984.
Turner, J. T.: Zooplankton feeding ecology: contents of fecal pellets of the
cyclopoid copepods Oncaea venusta, Corycaeus amazonicus,
Oithona plumifera, and O. simplex from the northern Gulf of
Mexico, Mar. Ecol., 7, 289–302, 1986.
Turner, J. T.: The importance of small planktonic copepods and their roles in
pelagic marine food webs, Zool. Stud., 43, 255–266, 2004.
Uye, S.: Why does Calanus sinicus prosper in the shelf ecosystem of
the Northwest Pacific Ocean?, ICES J. Mar. Sci, 57, 1850–1855, 2000.
Uye, S. and Kayano, Y.: Predatory feeding behavior of Tortanus (Copepoda:
Calanoida): life-stage differences and the predation impact on small
planktonic crustaceans, J. Crustacean Biol., 14, 473–483, 1994.
Vadstein, O., Stibor, H., Lippert, B., Løseth, K., Roederer, W.,
Sundt-Hansen, L., and Olsen, Y.: Moderate increase in the biomass of
omnivorous copepods may ease grazing control of planktonic algae, Mar.
Ecol.-Prog. Ser., 270, 199–207, 2004.
Ward, E. J., Semmens, B. X., and Schindler, D. E.: Including source
uncertainty and prior information in the analysis of stable isotope mixing
models, Environ. Sci. Technol., 44, 4645–4650, 2010.
Waser, N. A. D., Harrison, P. J., Nielsen, B., Calvert, S. E., and Turpin, D.
H.: Nitrogen isotope fractionation during the uptake and assimilation of
nitrate, nitrite, ammonium, and urea by a marine diatom, Limnol. Oceanogr.,
43, 215–224, 1998.
Wiadnyana, N. N. and Rassoulzadegan, F.: Selective feeding of Acartia clause and Centropages typicus on microzooplankton, Mar.
Ecol.-Prog. Ser., 53, 37–45, 1989.
Wood, S. and Wood, M. S.: Package “mgcv”, R Package Version 1.7–29, 2015.
Zapata, M., Rodríguez, F., and Garrido, J. L.: Separation of
chlorophylls and carotenoids from marine phytoplankton: a new HPLC method
using a reversed phase C8 column and pyridine-containing mobile phases, Mar.
Ecol.-Prog. Ser., 195, 29–45, 2000.
Zöllner, E., Hoppe, H. G., Sommer, U., and Jürgens, K.: Effect of
zooplankton-mediated trophic cascades on marine microbial food web components
(bacteria, nanoflagellates, ciliates), Limnol. Oceanogr., 54, 262–275, 2009.
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Short summary
The trophic preference (i.e., food resources and trophic levels) of different copepod groups was assessed along a salinity gradient in the temperate estuarine Gwangyang Bay of Korea, based on a seasonal investigation of taxonomic results in 2015 and stable isotope analysis incorporating multiple linear regression models. Our results depict a simple energy flow of the planktonic food web of Gwangyang Bay.
The trophic preference (i.e., food resources and trophic levels) of different copepod groups was...
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