Articles | Volume 17, issue 7
https://doi.org/10.5194/bg-17-1991-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-1991-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Apr 2020
Research article |
| 15 Apr 2020
| 15 Apr 2020
Acrylic acid and related dimethylated sulfur compounds in the Bohai and Yellow seas during summer and winter
Xi Wu
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Laboratory for Marine Ecology and Environmental Science, Qingdao
National Laboratory for Marine Science and Technology, Qingdao, 266071,
China
College of Chemistry and Chemical Engineering, Ocean University of
China, Qingdao, 266100, China
Pei-Feng Li
College of Chemistry and Chemical Engineering, Ocean University of
China, Qingdao, 266100, China
Hong-Hai Zhang
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Laboratory for Marine Ecology and Environmental Science, Qingdao
National Laboratory for Marine Science and Technology, Qingdao, 266071,
China
College of Chemistry and Chemical Engineering, Ocean University of
China, Qingdao, 266100, China
Mao-Xu Zhu
CORRESPONDING AUTHOR
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Laboratory for Marine Ecology and Environmental Science, Qingdao
National Laboratory for Marine Science and Technology, Qingdao, 266071,
China
College of Chemistry and Chemical Engineering, Ocean University of
China, Qingdao, 266100, China
Chun-Ying Liu
CORRESPONDING AUTHOR
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Laboratory for Marine Ecology and Environmental Science, Qingdao
National Laboratory for Marine Science and Technology, Qingdao, 266071,
China
College of Chemistry and Chemical Engineering, Ocean University of
China, Qingdao, 266100, China
Gui-Peng Yang
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
Laboratory for Marine Ecology and Environmental Science, Qingdao
National Laboratory for Marine Science and Technology, Qingdao, 266071,
China
College of Chemistry and Chemical Engineering, Ocean University of
China, Qingdao, 266100, China
Related authors
No articles found.
Lin Yang, Peiyi Bian, Jing Zhang, Anja Engel, Bin Yang, and Gui-Peng Yang
EGUsphere, https://doi.org/10.5194/egusphere-2025-2429, https://doi.org/10.5194/egusphere-2025-2429, 2025
Short summary
Short summary
CO, CDOM, and FDOM were more frequently enriched in the higher temperature and salinity off-shore regions. Marine-humic like CDOM tends to inhibit the sea-to-air flux of CO in the SML. The enrichment and photochemical process of CO in the SML were more active during the daytime. The photochemical production and microbial consumption rates of CO in the SML were more active than in the SSW.
Shan-Shan Liu, Jie Ni, Jin-Ming Song, Xu-Xu Gao, Zhen He, and Gui-Peng Yang
EGUsphere, https://doi.org/10.5194/egusphere-2025-251, https://doi.org/10.5194/egusphere-2025-251, 2025
Short summary
Short summary
Volatile chlorinated hydrocarbons (VCHCs) harm the ozone layer and climate, but the role of the Western Pacific in their atmospheric budget is unclear. This study showed ocean ventilation and terrestrial transport shape VCHCs levels. The Western Pacific emits some VCHCs while absorbing CCl4, helping reduce its levels in Eastern Asia. These findings highlight the ocean’s key role in regulating atmospheric VCHCs and provide essential data to refine global estimates of VCHCs atmospheric budgets.
Shengqian Zhou, Ying Chen, Shan Huang, Xianda Gong, Guipeng Yang, Honghai Zhang, Hartmut Herrmann, Alfred Wiedensohler, Laurent Poulain, Yan Zhang, Fanghui Wang, Zongjun Xu, and Ke Yan
Earth Syst. Sci. Data, 16, 4267–4290, https://doi.org/10.5194/essd-16-4267-2024, https://doi.org/10.5194/essd-16-4267-2024, 2024
Short summary
Short summary
Dimethyl sulfide (DMS) is a crucial natural reactive gas in the global climate system due to its great contribution to aerosols and subsequent impact on clouds over remote oceans. Leveraging machine learning techniques, we constructed a long-term global sea surface DMS gridded dataset with daily resolution. Compared to previous datasets, our new dataset holds promise for improving atmospheric chemistry modeling and advancing our comprehension of the climate effects associated with oceanic DMS.
Jian Wang, Lei Xue, Qianyao Ma, Feng Xu, Gaobin Xu, Shibo Yan, Jiawei Zhang, Jianlong Li, Honghai Zhang, Guiling Zhang, and Zhaohui Chen
Atmos. Chem. Phys., 24, 8721–8736, https://doi.org/10.5194/acp-24-8721-2024, https://doi.org/10.5194/acp-24-8721-2024, 2024
Short summary
Short summary
This study investigated the distribution and sources of non-methane hydrocarbons (NMHCs) in the lower atmosphere over the marginal seas of China. NMHCs, a subset of volatile organic compounds (VOCs), play a crucial role in atmospheric chemistry. Derived from systematic atmospheric sampling in coastal cities and marginal sea regions, this study offers valuable insights into the interaction between land and sea in shaping offshore atmospheric NMHCs.
Juan Yu, Lei Yu, Zhen He, Gui-Peng Yang, Jing-Guang Lai, and Qian Liu
Biogeosciences, 21, 161–176, https://doi.org/10.5194/bg-21-161-2024, https://doi.org/10.5194/bg-21-161-2024, 2024
Short summary
Short summary
The distributions of volatile organic sulfur compounds (VSCs) (DMS, COS, and CS2) in the seawater and atmosphere of the Bohai and Yellow Seas were evaluated. Seasonal variations in VSCs were found and showed summer > spring. The COS concentrations exhibited positive correlation with DOC concentrations in seawater during summer. VSCs concentrations in seawater decreased with the depth. Sea-to-air fluxes of COS, DMS, and CS2 indicated that these marginal seas are sources of atmospheric VSCs.
Lin Yang, Jing Zhang, Anja Engel, and Gui-Peng Yang
Biogeosciences, 19, 5251–5268, https://doi.org/10.5194/bg-19-5251-2022, https://doi.org/10.5194/bg-19-5251-2022, 2022
Short summary
Short summary
Enrichment factors of dissolved organic matter (DOM) in the eastern marginal seas of China exhibited a significant spatio-temporal variation. Photochemical and enrichment processes co-regulated DOM enrichment in the sea-surface microlayer (SML). Autochthonous DOM was more frequently enriched in the SML than terrestrial DOM. DOM in the sub-surface water exhibited higher aromaticity than that in the SML.
Junri Zhao, Weichun Ma, Kelsey R. Bilsback, Jeffrey R. Pierce, Shengqian Zhou, Ying Chen, Guipeng Yang, and Yan Zhang
Atmos. Chem. Phys., 22, 9583–9600, https://doi.org/10.5194/acp-22-9583-2022, https://doi.org/10.5194/acp-22-9583-2022, 2022
Short summary
Short summary
Marine dimethylsulfide (DMS) emissions play important roles in atmospheric sulfur cycle and climate effects. In this study, DMS emissions were estimated by using the machine learning method and drove the global 3D chemical transport model to simulate their climate effects. To our knowledge, this is the first study in the Asian region that quantifies the combined impacts of DMS on sulfate, particle number concentration, and radiative forcings.
Ye Tian, Gui-Peng Yang, Chun-Ying Liu, Pei-Feng Li, Hong-Tao Chen, and Hermann W. Bange
Ocean Sci., 16, 135–148, https://doi.org/10.5194/os-16-135-2020, https://doi.org/10.5194/os-16-135-2020, 2020
Short summary
Short summary
Nitric oxide (NO) could be produced by nitrite photolysis; the rates from dissolved nitrite in artificial seawater showed increasing trends with decreasing pH, increasing temperatures, and increasing salinity. However, NO photoproduction from the natural seawater samples did not show correlations with pH, water temperature, salinity, or dissolved nitrite concentrations in the western tropical North Pacific Ocean (WNTP). And there were other NO loss processes in the surface layer of WNTP.
Ye Tian, Chao Xue, Chun-Ying Liu, Gui-Peng Yang, Pei-Feng Li, Wei-Hua Feng, and Hermann W. Bange
Biogeosciences, 16, 4485–4496, https://doi.org/10.5194/bg-16-4485-2019, https://doi.org/10.5194/bg-16-4485-2019, 2019
Short summary
Short summary
Nitric oxide (NO) seems to be widespread, with different functions in the marine ecosystem, but we know little about it. Concentrations of NO were in a range from below the limit of detection to 616 pmol L−1 at the surface and 482 pmol L−1 at the bottom of the Bohai and Yellow seas. The study region was a source of atmospheric NO. Net NO sea-to-air fluxes were much lower than NO photoproduction rates, implying that the NO produced in the mixed layer was rapidly consumed before entering the air.
Robin Bénard, Maurice Levasseur, Michael Scarratt, Sonia Michaud, Michel Starr, Alfonso Mucci, Gustavo Ferreyra, Michel Gosselin, Jean-Éric Tremblay, Martine Lizotte, and Gui-Peng Yang
Biogeosciences, 16, 1167–1185, https://doi.org/10.5194/bg-16-1167-2019, https://doi.org/10.5194/bg-16-1167-2019, 2019
Short summary
Short summary
We present rare data on the combined effects of acidification and warming on dimethylsulfide (DMS) during a mesocosm experiment. Our results show a reduction of DMS under elevated pCO2, but warming the mesocosms by 5 °C translated into a positive offset in concentrations of DMS over the whole range of pCO2 tested. Our results suggest that warming could mitigate the expected reduction in DMS production due to OA, even increasing the net DMS production, with possible repercussions for the climate.
Sheng-Hui Zhang, Juan Yu, Qiong-Yao Ding, Gui-Peng Yang, Kun-Shan Gao, Hong-Hai Zhang, and Da-Wei Pan
Biogeosciences, 15, 6649–6658, https://doi.org/10.5194/bg-15-6649-2018, https://doi.org/10.5194/bg-15-6649-2018, 2018
Short summary
Short summary
Environmental effects of ocean acidification and trace gases have drawn much attention in recent years and existing studies reveal that the response of communities and trace gases to ocean acidification is still not predictable and requires further study. The present study examined the effect of elevated pCO2 on trace gas production and phytoplankton during an ocean acidification mesocosm experiment.
Juan Yu, Jiyuan Tian, Zhengyu Zhang, Guipeng Yang, and Hongju Chen
Biogeosciences Discuss., https://doi.org/10.5194/bg-2017-568, https://doi.org/10.5194/bg-2017-568, 2018
Preprint retracted
Short summary
Short summary
Data from the field experiment showed that Calanus sinicus was the predominant copepod in Jiaozhou Bay and has no apparent effect on DMS/DMSP production. The results in the laboratory experiment showed that the effects of C. sinicus grazing on DMS/DMSP production differed depending on the food type, food concentration and salinity. The data presented in this study are helpful to evaluate the copepod role on the biogeochemical cycle of DMSP in Jiaozhou Bay.
Shan Jian, Jing Zhang, Hong-Hai Zhang, and Gui-Peng Yang
Biogeosciences Discuss., https://doi.org/10.5194/bg-2017-453, https://doi.org/10.5194/bg-2017-453, 2017
Manuscript not accepted for further review
Chun-Ying Liu, Wei-Hua Feng, Ye Tian, Gui-Peng Yang, Pei-Feng Li, and Hermann W. Bange
Ocean Sci., 13, 623–632, https://doi.org/10.5194/os-13-623-2017, https://doi.org/10.5194/os-13-623-2017, 2017
Short summary
Short summary
We developed a new method for the determination of dissolved nitric oxide (NO) in discrete seawater samples based on the combination of a purge-and-trap setup and a fluorometric detection of NO. With this method we have a reliable and comparably easy to use method to measure oceanic NO surface concentrations, which can be used to decipher both its temporal and spatial distributions as well as its biogeochemical pathways in the oceans.
Josiane Mélançon, Maurice Levasseur, Martine Lizotte, Michael Scarratt, Jean-Éric Tremblay, Philippe Tortell, Gui-Peng Yang, Guang-Yu Shi, Huiwang Gao, David Semeniuk, Marie Robert, Michael Arychuk, Keith Johnson, Nes Sutherland, Marty Davelaar, Nina Nemcek, Angelica Peña, and Wendy Richardson
Biogeosciences, 13, 1677–1692, https://doi.org/10.5194/bg-13-1677-2016, https://doi.org/10.5194/bg-13-1677-2016, 2016
Short summary
Short summary
Ocean acidification is likely to affect iron-limited phytoplankton fertilization by desert dust. Short incubations of northeast subarctic Pacific waters enriched with dust and set at pH 8.0 and 7.8 were conducted. Acidification led to a significant reduction (by 16–38 %) of the final concentration of chl a reached after enrichment. These results show that dust deposition events in a low-pH iron-limited ocean are likely to stimulate phytoplankton growth to a lesser extent than in today's ocean.
Related subject area
Biogeochemistry: Coastal Ocean
Improved understanding of nitrate trends, eutrophication indicators, and risk areas using machine learning
Evaluating ocean alkalinity enhancement as a carbon dioxide removal strategy in the North Sea
Spring–neap tidal cycles modulate the strength of the carbon source at the estuary–coast interface
Spatiotemporal variations in surface marine carbonate system properties across the western Mediterranean Sea using volunteer observing ship data
Amplified bottom water acidification rates on the Bering Sea shelf from 1970–2022
Depositional controls and budget of organic carbon burial in fine-grained sediments of the North Sea – the Helgoland Mud Area as a natural laboratory
Effects of submarine groundwater on nutrient concentration and primary production in a deep bay of the Japan Sea
The bacteria–protist link as a main route of dissolved organic matter across contrasting productivity areas on the Patagonian Shelf
Ocean alkalinity enhancement (OAE) does not cause cellular stress in a phytoplankton community of the subtropical Atlantic Ocean
Reviews and syntheses: On increasing hypoxia in eastern boundary upwelling systems – zooplankton under metabolic stress
Zinc stimulation of phytoplankton in a low carbon dioxide, coastal Antarctic environment: evidence for the Zn hypothesis
Technical note: Testing a new approach for the determination of N2 fixation rates by coupling a membrane equilibrator to a mass spectrometer for long-term observations
A niche for diverse cable bacteria in continental margin sediments overlain by oxygen-deficient waters
Phytoplankton community succession and biogeochemistry in a bloom simulation experiment at an estuary-ocean interface
Long-term variations in pH in coastal waters along the Korean Peninsula
The effect of carbonate mineral additions on biogeochemical conditions in surface sediments and benthic–pelagic exchange fluxes
Estimation of Metabolic Dynamics of Restored Seagrass Meadows in a Southeast Asia Islet: Insights from Ex Situ Benthic Incubation
Assessing the impacts of simulated ocean alkalinity enhancement on viability and growth of nearshore species of phytoplankton
Human Activities Caused Hypoxia Expansion in a Large Eutrophic Estuary: Non-negligible Role of Riverine Suspended Sediments
Photosynthetic electron, carbon and oxygen fluxes within a mosaic of Fe limitation in the California Current Upwelling System
Responses of microbial metabolic rates to non-equilibrated silicate- versus calcium-based ocean alkalinity enhancement
High metabolic zinc demand within native Amundsen and Ross sea phytoplankton communities determined by stable isotope uptake rate measurements
The influence of zooplankton and oxygen on the particulate organic carbon flux in the Benguela Upwelling System
Reviews and syntheses: Biological indicators of low-oxygen stress in marine water-breathing animals
Temperature-enhanced effects of iron on Southern Ocean phytoplankton
Riverine nutrient impact on global ocean nitrogen cycle feedbacks and marine primary production in an Earth system model
The Northeast Greenland Shelf as a potential late-summer CO2 source to the atmosphere
Technical note: Ocean Alkalinity Enhancement Pelagic Impact Intercomparison Project (OAEPIIP)
Estimates of carbon sequestration potential in an expanding Arctic fjord (Hornsund, Svalbard) affected by dark plumes of glacial meltwater
An assessment of ocean alkalinity enhancement using aqueous hydroxides: kinetics, efficiency, and precipitation thresholds
Dissolved nitric oxide in the lower Elbe Estuary and the Port of Hamburg area
Variable contribution of wastewater treatment plant effluents to downstream nitrous oxide concentrations and emissions
Distribution of nutrients and dissolved organic matter in a eutrophic equatorial estuary: the Johor River and the East Johor Strait
Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification
Ocean alkalinity enhancement using sodium carbonate salts does not lead to measurable changes in Fe dynamics in a mesocosm experiment
Quantification and mitigation of bottom-trawling impacts on sedimentary organic carbon stocks in the North Sea
Influence of ocean alkalinity enhancement with olivine or steel slag on a coastal plankton community in Tasmania
Multi-model comparison of trends and controls of near-bed oxygen concentration on the northwest European continental shelf under climate change
Picoplanktonic methane production in eutrophic surface waters
Vertical mixing alleviates autumnal oxygen deficiency in the central North Sea
Hypoxia also occurs in small highly turbid estuaries: the example of the Charente (Bay of Biscay)
Seasonality and response of ocean acidification and hypoxia to major environmental anomalies in the southern Salish Sea, North America (2014–2018)
Oceanographic processes driving low-oxygen conditions inside Patagonian fjords
Above- and belowground plant mercury dynamics in a salt marsh estuary in Massachusetts, USA
Variability and drivers of carbonate chemistry at shellfish aquaculture sites in the Salish Sea, British Columbia
Unusual Hemiaulus bloom influences ocean productivity in Northeastern US Shelf waters
Insights into carbonate environmental conditions in the Chukchi Sea
UAV approaches for improved mapping of vegetation cover and estimation of carbon storage of small saltmarshes: examples from Loch Fleet, northeast Scotland
Iron “ore” nothing: benthic iron fluxes from the oxygen-deficient Santa Barbara Basin enhance phytoplankton productivity in surface waters
Marine anoxia initiates giant sulfur-oxidizing bacterial mat proliferation and associated changes in benthic nitrogen, sulfur, and iron cycling in the Santa Barbara Basin, California Borderland
Deep S. Banerjee and Jozef Skákala
Biogeosciences, 22, 3769–3784, https://doi.org/10.5194/bg-22-3769-2025, https://doi.org/10.5194/bg-22-3769-2025, 2025
Short summary
Short summary
Nitrate is a crucial nutrient in oceans, whose excess can trigger uncontrolled algae growth that damages marine ecosystems. We used machine learning to generate skilled, gap-free, bi-decadal surface nitrate data from sparse observations, revealing areas on the North-West European Shelf that are more vulnerable to excess algae growth if nutrient pollution occurs. We also looked at bi-decadal trends in coastal nitrate and the impact of winter nitrate on spring phytoplankton blooms.
Feifei Liu, Ute Daewel, Jan Kossack, Kubilay Timur Demir, Helmuth Thomas, and Corinna Schrum
Biogeosciences, 22, 3699–3719, https://doi.org/10.5194/bg-22-3699-2025, https://doi.org/10.5194/bg-22-3699-2025, 2025
Short summary
Short summary
Ocean alkalinity enhancement (OAE) boosts oceanic CO₂ absorption, offering a climate solution. Using a regional model, we examined OAE in the North Sea, revealing that shallow coastal areas achieve higher CO₂ uptake than offshore where alkalinity is more susceptible to deep-ocean loss. Long-term carbon storage is limited, and pH shifts vary by location. Our findings guide OAE deployment to optimize carbon removal while minimizing ecological effects, supporting global climate mitigation efforts.
Vlad A. Macovei, Louise C. V. Rewrie, Rüdiger Röttgers, and Yoana G. Voynova
Biogeosciences, 22, 3375–3396, https://doi.org/10.5194/bg-22-3375-2025, https://doi.org/10.5194/bg-22-3375-2025, 2025
Short summary
Short summary
We found that biogeochemical variability at the land–sea interface (LSI) in two major temperate estuaries is modulated by the 14 d spring–neap tidal cycle, with large effects on dissolved inorganic and organic carbon concentrations and distribution. As this effect increases the strength of the carbon source to the atmosphere by up to 74 % during spring tide, it should be accounted for in regional models, which aim to resolve biogeochemical processing at the LSI.
David Curbelo-Hernández, David González-Santana, Aridane G. González, J. Magdalena Santana-Casiano, and Melchor González-Dávila
Biogeosciences, 22, 3329–3356, https://doi.org/10.5194/bg-22-3329-2025, https://doi.org/10.5194/bg-22-3329-2025, 2025
Short summary
Short summary
This study offers a unique high-resolution dataset (2019–2024) on surface physicochemical properties in the western Mediterranean Sea. It reveals accelerated surface warming, significantly altering CO2 levels and pH. Currently a net CO2 sink, the region may become a CO2 source by 2030 due to weakening in-gassing. The research highlights the value of VOS (volunteer observing ship) lines for monitoring climate impacts and emphasizes the need for ongoing observations to enhance long-term trend accuracy and future projections.
Darren J. Pilcher, Jessica N. Cross, Natalie Monacci, Linquan Mu, Kelly A. Kearney, Albert J. Hermann, and Wei Cheng
Biogeosciences, 22, 3103–3125, https://doi.org/10.5194/bg-22-3103-2025, https://doi.org/10.5194/bg-22-3103-2025, 2025
Short summary
Short summary
The Bering Sea shelf is a highly productive marine ecosystem that is vulnerable to ocean acidification. We use a computational model to simulate the carbon cycle and acidification rates from 1970–2022. The results suggest that bottom water acidification rates are more than twice as great as surface rates. Bottom waters are also naturally more acidic. Thus these waters will pass key thresholds known to negatively impact marine organisms, such as red king crab, much sooner than surface waters.
Daniel Müller, Bo Liu, Walter Geibert, Moritz Holtappels, Lasse Sander, Elda Miramontes, Heidi Taubner, Susann Henkel, Kai-Uwe Hinrichs, Denise Bethke, Ingrid Dohrmann, and Sabine Kasten
Biogeosciences, 22, 2541–2567, https://doi.org/10.5194/bg-22-2541-2025, https://doi.org/10.5194/bg-22-2541-2025, 2025
Short summary
Short summary
Coastal and shelf sediments are the most important sinks for organic carbon (OC) on Earth. We produced a new high-resolution sediment and porewater data set from the Helgoland Mud Area (HMA), North Sea, to determine which depositional factors control the preservation of OC. The burial efficiency is highest in an area of high sedimentation and terrigenous OC. The HMA covers 0.09 % of the North Sea but accounts for 0.76 % of its OC accumulation, highlighting the importance of the depocentre.
Menghong Dong, Xinyu Guo, Takuya Matsuura, Taichi Tebakari, and Jing Zhang
Biogeosciences, 22, 2383–2402, https://doi.org/10.5194/bg-22-2383-2025, https://doi.org/10.5194/bg-22-2383-2025, 2025
Short summary
Short summary
Submarine groundwater discharge (SGD), a common coastal hydrological process that involves submarine inflow of groundwater into the sea, is associated with a large nutrient load. To clarify the distribution of SGD-derived nutrients after release at the bottom of the sea and their contribution to phytoplankton growth in the marine ecosystem, we modeled the SGD process in Toyama Bay using a specialized computer code that can distinguish SGD-derived nutrients from nutrients from other sources.
M. Celeste López-Abbate, John E. Garzón-Cardona, Ricardo Silva, Juan-Carlos Molinero, Laura A. Ruiz-Etcheverry, Ana M. Martínez, Azul S. Gilabert, and Rubén J. Lara
Biogeosciences, 22, 2309–2325, https://doi.org/10.5194/bg-22-2309-2025, https://doi.org/10.5194/bg-22-2309-2025, 2025
Short summary
Short summary
This study explores how microbial dynamics influence the dissolved organic matter (DOM) pool in the Patagonian Shelf. Despite high phytoplankton biomass, selective grazing on fast-growing bacteria led to DOM accumulation, likely due to reduced DOM-consuming bacteria and added egestion compounds. Experiments showed that bacteria not only acted as a carbon sink through mineralization but also transferred assimilated carbon dioxide (CO2) to higher trophic levels.
Librada Ramírez, Leonardo J. Pozzo-Pirotta, Aja Trebec, Víctor Manzanares-Vázquez, José L. Díez, Javier Arístegui, Ulf Riebesell, Stephen D. Archer, and María Segovia
Biogeosciences, 22, 1865–1886, https://doi.org/10.5194/bg-22-1865-2025, https://doi.org/10.5194/bg-22-1865-2025, 2025
Short summary
Short summary
We studied the potential effects of increasing ocean alkalinity on a natural plankton community in subtropical waters of the Atlantic near Gran Canaria, Spain. Alkalinity is the capacity of water to resist acidification, and plankton are usually microscopic plants (phytoplankton) and animals (zooplankton), often less than 2.5 cm in length. This study suggests that increasing ocean alkalinity did not have a significant negative impact on the plankton community studied.
Leissing Frederick, Mauricio A. Urbina, and Ruben Escribano
Biogeosciences, 22, 1839–1852, https://doi.org/10.5194/bg-22-1839-2025, https://doi.org/10.5194/bg-22-1839-2025, 2025
Short summary
Short summary
Evidence shows that due to global warming, zooplankton inhabiting the coastal upwelling zone are exposed to increasing hypoxia affecting their physiology, metabolism, and population dynamics. The adaptive responses of zooplankton to cope with mild/severe hypoxia may depend on trade-offs with other metabolic/energy demands, implying less energy for growth, feeding, and reproduction, with ecological consequences for the zooplankton population and the marine food web.
Riss M. Kell, Adam V. Subhas, Nicole L. Schanke, Lauren E. Lees, Rebecca J. Chmiel, Deepa Rao, Margaret M. Brisbin, Dawn M. Moran, Matthew R. McIlvin, Francesco Bolinesi, Olga Mangoni, Raffaella Casotti, Cecilia Balestra, Tristan Horner, Robert B. Dunbar, Andrew E. Allen, Giacomo R. DiTullio, and Mak A. Saito
EGUsphere, https://doi.org/10.1101/2023.11.05.565706, https://doi.org/10.1101/2023.11.05.565706, 2025
Short summary
Short summary
Photosynthetic productivity is strongly influenced by water column nutrient availability. Despite the importance of zinc, definitive evidence for oceanic zinc limitation of photosynthesis has been scarce. We applied multiple biogeochemical measurements to a field site in Terra Nova Bay, Antarctica, to demonstrate that the phytoplankton community was experiencing zinc limitation. This field evidence paves the way for future experimental studies to consider Zn as a limiting oceanic micronutrient.
Sören Iwe, Oliver Schmale, and Bernd Schneider
Biogeosciences, 22, 1767–1779, https://doi.org/10.5194/bg-22-1767-2025, https://doi.org/10.5194/bg-22-1767-2025, 2025
Short summary
Short summary
We present a novel method for quantifying N2 fixation by cyanobacteria, which is crucial in Baltic Sea eutrophication. Our Gas Equilibrium – Membrane-Inlet Mass Spectrometer (GE-MIMS), designed for operation on voluntary observing ships (VOSs), enables large-scale monitoring of surface water N2 depletion caused by N2 fixation. Laboratory tests confirm the device’s accuracy and precision, ensuring that it can complement current methods and contribute valuable data for better understanding N2 fixation in the Baltic Sea.
Caroline P. Slomp, Martijn Hermans, Niels A. G. M. van Helmond, Silke Severmann, James McManus, Marit R. van Erk, and Sairah Malkin
EGUsphere, https://doi.org/10.5194/egusphere-2025-817, https://doi.org/10.5194/egusphere-2025-817, 2025
Short summary
Short summary
Cable bacteria couple oxidation of sulfide at depth in sediments with reduction of oxygen, nitrate or nitrite near the sediment surface, thereby preventing release of toxic hydrogen sulfide to the overlying water. We show evidence for a diversity of cable bacteria in sediments from hypoxic and anoxic basins along the continental margin of California and Mexico. Cable bacteria activity in this setting is likely periodic and dependent on the supply of organic matter and/or oxygen.
Jenna Alyson Lee, Joseph H. Vineis, Mathieu A. Poupon, Laure Resplandy, and Bess B. Ward
EGUsphere, https://doi.org/10.5194/egusphere-2025-871, https://doi.org/10.5194/egusphere-2025-871, 2025
Short summary
Short summary
Concurrent sampling of environmental parameters, productivity rates, photopigments, and DNA were used to analyze a 24–L estuarine diatom bloom microcosm. Biogeochemical data and an ecological model indicated that the bloom was terminated by grazing. Comparisons to previous studies revealed (1) additional community and diversity complexity using 18S amplicon vs. traditional pigment–based analyses, and (2) a potential global productivity–diversity relationship using 18S and carbon transport rates.
Yong-Woo Lee, Mi-Ok Park, Seong-Gil Kim, Tae-Hoon Kim, Yong Hwa Oh, Sang Heon Lee, and DongJoo Joung
Biogeosciences, 22, 675–690, https://doi.org/10.5194/bg-22-675-2025, https://doi.org/10.5194/bg-22-675-2025, 2025
Short summary
Short summary
Long-term pH variation in coastal waters along the Korean Peninsula was assessed for the first time, and it exhibited no significant pH change over an 11-year period. This contrasts with the ongoing pH decline in open oceans and other coastal areas. Analysis of environmental data showed that pH is mainly controlled by dissolved oxygen in bottom waters. This suggests that ocean warming could cause a pH decline in Korean coastal waters, affecting many fish and seaweed aquaculture operations.
Kadir Biçe, Tristen Myers Stewart, George G. Waldbusser, and Christof Meile
Biogeosciences, 22, 641–657, https://doi.org/10.5194/bg-22-641-2025, https://doi.org/10.5194/bg-22-641-2025, 2025
Short summary
Short summary
We studied the effect of addition of carbonate minerals on coastal sediments. We carried out laboratory experiments to quantify the dissolution kinetics and integrated these observations into a numerical model that describes biogeochemical cycling in surficial sediments. Using the model, we demonstrate the buffering effect of the mineral additions and their duration. We quantify the effect under different environmental conditions and assess the potential for increased atmospheric CO2 uptake.
Mariche Bandibas Natividad, Jian-Jhih Chen, Hsin-Yu Chou, Lan-Feng Fan, Yi-Le Shen, and Wen-Chen Chou
EGUsphere, https://doi.org/10.5194/egusphere-2024-4000, https://doi.org/10.5194/egusphere-2024-4000, 2025
Short summary
Short summary
Seagrass restoration serves as a nature-based solution for CO2 removal. We examined the organic carbon and carbonate dynamics of restored seagrasses (SG) and bare sediments (BS) using ex situ core incubations. SG exhibited higher net ecosystem metabolism compared to BS, while no significant difference was observed in net ecosystem calcification. Consequently, SG demonstrated a significantly enhanced overall capacity for carbon uptake.
Jessica L. Oberlander, Mackenzie E. Burke, Cat A. London, and Hugh L. MacIntyre
Biogeosciences, 22, 499–512, https://doi.org/10.5194/bg-22-499-2025, https://doi.org/10.5194/bg-22-499-2025, 2025
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is a promising negative emission technology that results in the net sequestration of atmospheric carbon. In this paper, we assess the potential impact of OAE on phytoplankton through an analysis of prior studies and the effects of simulated OAE on photosynthetic competence. Our findings suggest that there may be little if any significant impact on most phytoplankton studied to date if OAE is conducted in well-flushed, nearshore environments.
Yue Nan, Zheng Chen, Bin Wang, Bo Liang, and Jiatang Hu
EGUsphere, https://doi.org/10.5194/egusphere-2024-4013, https://doi.org/10.5194/egusphere-2024-4013, 2025
Short summary
Short summary
Human activities are changing the coastal water environment, but the role of suspended sediments in oxygen loss is not well understood. We used a model to compare dissolved oxygen levels and related factors in the 1990s and 2010s in the Pearl River Estuary. Reduced suspended sediments and increased pollution have expanded low-oxygen areas by 1.5 times. It highlights that declining suspended sediments increase hypoxia in estuaries, especially with rising nutrients, which need urgent attention.
Yayla Sezginer, Kate Schuler, Emily Speciale, Adrian Marchetti, Claire Till, Ralph Till, and Philippe Tortell
EGUsphere, https://doi.org/10.5194/egusphere-2024-3812, https://doi.org/10.5194/egusphere-2024-3812, 2025
Short summary
Short summary
We recorded three metrics of photosynthesis in the California Current. Real-time observations of microalgae physiology and productivity revealed signs of iron limitation where the continental shelf rapidly dropped off. Iron limitation influenced how efficiently light was absorbed and used for carbon fixation but did not appear to affect net photosynthetic oxygen production. Our results offer useful insights towards efforts to model carbon fixation rates from microalgae optical properties.
Laura Marín-Samper, Javier Arístegui, Nauzet Hernández-Hernández, and Ulf Riebesell
Biogeosciences, 21, 5707–5724, https://doi.org/10.5194/bg-21-5707-2024, https://doi.org/10.5194/bg-21-5707-2024, 2024
Short summary
Short summary
This study exposed a natural community to two non-CO2-equilibrated ocean alkalinity enhancement (OAE) deployments using different minerals. Adding alkalinity in this manner decreases dissolved CO2, essential for photosynthesis. While photosynthesis was not suppressed, bloom formation was mildly delayed, potentially impacting marine food webs. The study emphasizes the need for further research on OAE without prior equilibration and on its ecological implications.
Riss M. Kell, Rebecca J. Chmiel, Deepa Rao, Dawn M. Moran, Matthew R. McIlvin, Tristan J. Horner, Nicole L. Schanke, Ichiko Sugiyama, Robert B. Dunbar, Giacomo R. DiTullio, and Mak A. Saito
Biogeosciences, 21, 5685–5706, https://doi.org/10.5194/bg-21-5685-2024, https://doi.org/10.5194/bg-21-5685-2024, 2024
Short summary
Short summary
Despite interest in modeling the biogeochemical uptake and cycling of the trace metal zinc (Zn), measurements of Zn uptake in natural marine phytoplankton communities have not been conducted previously. To fill this gap, we employed a stable isotope uptake rate measurement method to quantify Zn uptake into natural phytoplankton assemblages within the Southern Ocean. Zn demand was high and rapid enough to depress the inventory of Zn available to phytoplankton on seasonal timescales.
Luisa Chiara Meiritz, Tim Rixen, Anja Karin van der Plas, Tarron Lamont, and Niko Lahajnar
Biogeosciences, 21, 5261–5276, https://doi.org/10.5194/bg-21-5261-2024, https://doi.org/10.5194/bg-21-5261-2024, 2024
Short summary
Short summary
Moored and drifting sediment trap experiments in the northern (nBUS) and southern (sBUS) Benguela Upwelling System showed that active carbon fluxes by vertically migrating zooplankton were about 3 times higher in the sBUS than in the nBUS. Despite these large variabilities, the mean passive particulate organic carbon (POC) fluxes were almost equal in the two subsystems. The more intense near-bottom oxygen minimum layer seems to lead to higher POC fluxes and accumulation rates in the nBUS.
Michael R. Roman, Andrew H. Altieri, Denise Breitburg, Erica M. Ferrer, Natalya D. Gallo, Shin-ichi Ito, Karin Limburg, Kenneth Rose, Moriaki Yasuhara, and Lisa A. Levin
Biogeosciences, 21, 4975–5004, https://doi.org/10.5194/bg-21-4975-2024, https://doi.org/10.5194/bg-21-4975-2024, 2024
Short summary
Short summary
Oxygen-depleted ocean waters have increased worldwide. In order to improve our understanding of the impacts of this oxygen loss on marine life it is essential that we develop reliable indicators that track the negative impacts of low oxygen. We review various indicators of low-oxygen stress for marine animals including their use, research needs, and application to confront the challenges of ocean oxygen loss.
Charlotte Eich, Mathijs van Manen, J. Scott P. McCain, Loay J. Jabre, Willem H. van de Poll, Jinyoung Jung, Sven B. E. H. Pont, Hung-An Tian, Indah Ardiningsih, Gert-Jan Reichart, Erin M. Bertrand, Corina P. D. Brussaard, and Rob Middag
Biogeosciences, 21, 4637–4663, https://doi.org/10.5194/bg-21-4637-2024, https://doi.org/10.5194/bg-21-4637-2024, 2024
Short summary
Short summary
Phytoplankton growth in the Southern Ocean (SO) is often limited by low iron (Fe) concentrations. Sea surface warming impacts Fe availability and can affect phytoplankton growth. We used shipboard Fe clean incubations to test how changes in Fe and temperature affect SO phytoplankton. Their abundances usually increased with Fe addition and temperature increase, with Fe being the major factor. These findings imply potential shifts in ecosystem structure, impacting food webs and elemental cycling.
Miriam Tivig, David P. Keller, and Andreas Oschlies
Biogeosciences, 21, 4469–4493, https://doi.org/10.5194/bg-21-4469-2024, https://doi.org/10.5194/bg-21-4469-2024, 2024
Short summary
Short summary
Marine biological production is highly dependent on the availability of nitrogen and phosphorus. Rivers are the main source of phosphorus to the oceans but poorly represented in global model oceans. We include dissolved nitrogen and phosphorus from river export in a global model ocean and find that the addition of riverine phosphorus affects marine biology on millennial timescales more than riverine nitrogen alone. Globally, riverine phosphorus input increases primary production rates.
Esdoorn Willcox, Marcos Lemes, Thomas Juul-Pedersen, Mikael Kristian Sejr, Johnna Marchiano Holding, and Søren Rysgaard
Biogeosciences, 21, 4037–4050, https://doi.org/10.5194/bg-21-4037-2024, https://doi.org/10.5194/bg-21-4037-2024, 2024
Short summary
Short summary
In this work, we measured the chemistry of seawater from samples obtained from different depths and locations off the east coast of the Northeast Greenland National Park to determine what is influencing concentrations of dissolved CO2. Historically, the region has always been thought to take up CO2 from the atmosphere, but we show that it is possible for the region to become a source in late summer. We discuss the variables that may be related to such changes.
Lennart Thomas Bach, Aaron James Ferderer, Julie LaRoche, and Kai Georg Schulz
Biogeosciences, 21, 3665–3676, https://doi.org/10.5194/bg-21-3665-2024, https://doi.org/10.5194/bg-21-3665-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is an emerging marine CO2 removal method, but its environmental effects are insufficiently understood. The OAE Pelagic Impact Intercomparison Project (OAEPIIP) provides funding for a standardized and globally replicated microcosm experiment to study the effects of OAE on plankton communities. Here, we provide a detailed manual for the OAEPIIP experiment. We expect OAEPIIP to help build scientific consensus on the effects of OAE on plankton.
Marlena Szeligowska, Déborah Benkort, Anna Przyborska, Mateusz Moskalik, Bernabé Moreno, Emilia Trudnowska, and Katarzyna Błachowiak-Samołyk
Biogeosciences, 21, 3617–3639, https://doi.org/10.5194/bg-21-3617-2024, https://doi.org/10.5194/bg-21-3617-2024, 2024
Short summary
Short summary
The European Arctic is experiencing rapid regional warming, causing glaciers that terminate in the sea to retreat onto land. Due to this process, the area of a well-studied fjord, Hornsund, has increased by around 100 km2 (40%) since 1976. Combining satellite and in situ data with a mathematical model, we estimated that, despite some negative consequences of glacial meltwater release, such emerging coastal waters could mitigate climate change by increasing carbon uptake and storage by sediments.
Mallory C. Ringham, Nathan Hirtle, Cody Shaw, Xi Lu, Julian Herndon, Brendan R. Carter, and Matthew D. Eisaman
Biogeosciences, 21, 3551–3570, https://doi.org/10.5194/bg-21-3551-2024, https://doi.org/10.5194/bg-21-3551-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement leverages the large surface area and carbon storage capacity of the oceans to store atmospheric CO2 as dissolved bicarbonate. We monitored CO2 uptake in seawater treated with NaOH to establish operational boundaries for carbon removal experiments. Results show that CO2 equilibration occurred on the order of weeks to months, was consistent with values expected from equilibration calculations, and was limited by mineral precipitation at high pH and CaCO3 saturation.
Riel Carlo O. Ingeniero, Gesa Schulz, and Hermann W. Bange
Biogeosciences, 21, 3425–3440, https://doi.org/10.5194/bg-21-3425-2024, https://doi.org/10.5194/bg-21-3425-2024, 2024
Short summary
Short summary
Our research is the first to measure dissolved NO concentrations in temperate estuarine waters, providing insights into its distribution under varying conditions and enhancing our understanding of its production processes. Dissolved NO was supersaturated in the Elbe Estuary, indicating that it is a source of atmospheric NO. The observed distribution of dissolved NO most likely resulted from nitrification.
Weiyi Tang, Jeff Talbott, Timothy Jones, and Bess B. Ward
Biogeosciences, 21, 3239–3250, https://doi.org/10.5194/bg-21-3239-2024, https://doi.org/10.5194/bg-21-3239-2024, 2024
Short summary
Short summary
Wastewater treatment plants (WWTPs) are known to be hotspots of greenhouse gas emissions. However, the impact of WWTPs on the emission of the greenhouse gas N2O in downstream aquatic environments is less constrained. We found spatially and temporally variable but overall higher N2O concentrations and fluxes in waters downstream of WWTPs, pointing to the need for efficient N2O removal in addition to the treatment of nitrogen in WWTPs.
Amanda Y. L. Cheong, Kogila Vani Annammala, Ee Ling Yong, Yongli Zhou, Robert S. Nichols, and Patrick Martin
Biogeosciences, 21, 2955–2971, https://doi.org/10.5194/bg-21-2955-2024, https://doi.org/10.5194/bg-21-2955-2024, 2024
Short summary
Short summary
We measured nutrients and dissolved organic matter for 1 year in a eutrophic tropical estuary to understand their sources and cycling. Our data show that the dissolved organic matter originates partly from land and partly from microbial processes in the water. Internal recycling is likely important for maintaining high nutrient concentrations, and we found that there is often excess nitrogen compared to silicon and phosphorus. Our data help to explain how eutrophication persists in this system.
Aaron Ferderer, Kai G. Schulz, Ulf Riebesell, Kirralee G. Baker, Zanna Chase, and Lennart T. Bach
Biogeosciences, 21, 2777–2794, https://doi.org/10.5194/bg-21-2777-2024, https://doi.org/10.5194/bg-21-2777-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is a promising method of atmospheric carbon removal; however, its ecological impacts remain largely unknown. We assessed the effects of simulated silicate- and calcium-based mineral OAE on diatom silicification. We found that increased silicate concentrations from silicate-based OAE increased diatom silicification. In contrast, the enhancement of alkalinity had no effect on community silicification and minimal effects on the silicification of different genera.
David González-Santana, María Segovia, Melchor González-Dávila, Librada Ramírez, Aridane G. González, Leonardo J. Pozzo-Pirotta, Veronica Arnone, Victor Vázquez, Ulf Riebesell, and J. Magdalena Santana-Casiano
Biogeosciences, 21, 2705–2715, https://doi.org/10.5194/bg-21-2705-2024, https://doi.org/10.5194/bg-21-2705-2024, 2024
Short summary
Short summary
In a recent experiment off the coast of Gran Canaria (Spain), scientists explored a method called ocean alkalinization enhancement (OAE), where carbonate minerals were added to seawater. This process changed the levels of certain ions in the water, affecting its pH and buffering capacity. The researchers were particularly interested in how this could impact the levels of essential trace metals in the water.
Lucas Porz, Wenyan Zhang, Nils Christiansen, Jan Kossack, Ute Daewel, and Corinna Schrum
Biogeosciences, 21, 2547–2570, https://doi.org/10.5194/bg-21-2547-2024, https://doi.org/10.5194/bg-21-2547-2024, 2024
Short summary
Short summary
Seafloor sediments store a large amount of carbon, helping to naturally regulate Earth's climate. If disturbed, some sediment particles can turn into CO2, but this effect is not well understood. Using computer simulations, we found that bottom-contacting fishing gears release about 1 million tons of CO2 per year in the North Sea, one of the most heavily fished regions globally. We show how protecting certain areas could reduce these emissions while also benefitting seafloor-living animals.
Jiaying A. Guo, Robert F. Strzepek, Kerrie M. Swadling, Ashley T. Townsend, and Lennart T. Bach
Biogeosciences, 21, 2335–2354, https://doi.org/10.5194/bg-21-2335-2024, https://doi.org/10.5194/bg-21-2335-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement aims to increase atmospheric CO2 sequestration by adding alkaline materials to the ocean. We assessed the environmental effects of olivine and steel slag powder on coastal plankton. Overall, slag is more efficient than olivine in releasing total alkalinity and, thus, in its ability to sequester CO2. Slag also had less environmental effect on the enclosed plankton communities when considering its higher CO2 removal potential based on this 3-week experiment.
Giovanni Galli, Sarah Wakelin, James Harle, Jason Holt, and Yuri Artioli
Biogeosciences, 21, 2143–2158, https://doi.org/10.5194/bg-21-2143-2024, https://doi.org/10.5194/bg-21-2143-2024, 2024
Short summary
Short summary
This work shows that, under a high-emission scenario, oxygen concentration in deep water of parts of the North Sea and Celtic Sea can become critically low (hypoxia) towards the end of this century. The extent and frequency of hypoxia depends on the intensity of climate change projected by different climate models. This is the result of a complex combination of factors like warming, increase in stratification, changes in the currents and changes in biological processes.
Sandy E. Tenorio and Laura Farías
Biogeosciences, 21, 2029–2050, https://doi.org/10.5194/bg-21-2029-2024, https://doi.org/10.5194/bg-21-2029-2024, 2024
Short summary
Short summary
Time series studies show that CH4 is highly dynamic on the coastal ocean surface and planktonic communities are linked to CH4 accumulation, as found in coastal upwelling off Chile. We have identified the crucial role of picoplankton (> 3 µm) in CH4 recycling, especially with the addition of methylated substrates (trimethylamine and methylphosphonic acid) during upwelling and non-upwelling periods. These insights improve understanding of surface ocean CH4 recycling, aiding CH4 emission estimates.
Charlotte A. J. Williams, Tom Hull, Jan Kaiser, Claire Mahaffey, Naomi Greenwood, Matthew Toberman, and Matthew R. Palmer
Biogeosciences, 21, 1961–1971, https://doi.org/10.5194/bg-21-1961-2024, https://doi.org/10.5194/bg-21-1961-2024, 2024
Short summary
Short summary
Oxygen (O2) is a key indicator of ocean health. The risk of O2 loss in the productive coastal/continental slope regions is increasing. Autonomous underwater vehicles equipped with O2 optodes provide lots of data but have problems resolving strong vertical O2 changes. Here we show how to overcome this and calculate how much O2 is supplied to the low-O2 bottom waters via mixing. Bursts in mixing supply nearly all of the O2 to bottom waters in autumn, stopping them reaching ecologically low levels.
Sabine Schmidt and Ibrahima Iris Diallo
Biogeosciences, 21, 1785–1800, https://doi.org/10.5194/bg-21-1785-2024, https://doi.org/10.5194/bg-21-1785-2024, 2024
Short summary
Short summary
Along the French coast facing the Bay of Biscay, the large Gironde and Loire estuaries suffer from hypoxia. This prompted a study of the small Charente estuary located between them. This work reveals a minimum oxygen zone in the Charente estuary, which extends for about 25 km. Temperature is the main factor controlling the hypoxia. This calls for the monitoring of small turbid macrotidal estuaries that are vulnerable to hypoxia, a risk expected to increase with global warming.
Simone R. Alin, Jan A. Newton, Richard A. Feely, Samantha Siedlecki, and Dana Greeley
Biogeosciences, 21, 1639–1673, https://doi.org/10.5194/bg-21-1639-2024, https://doi.org/10.5194/bg-21-1639-2024, 2024
Short summary
Short summary
We provide a new multi-stressor data product that allows us to characterize the seasonality of temperature, O2, and CO2 in the southern Salish Sea and delivers insights into the impacts of major marine heatwave and precipitation anomalies on regional ocean acidification and hypoxia. We also describe the present-day frequencies of temperature, O2, and ocean acidification conditions that cross thresholds of sensitive regional species that are economically or ecologically important.
Pamela Linford, Iván Pérez-Santos, Paulina Montero, Patricio A. Díaz, Claudia Aracena, Elías Pinilla, Facundo Barrera, Manuel Castillo, Aida Alvera-Azcárate, Mónica Alvarado, Gabriel Soto, Cécile Pujol, Camila Schwerter, Sara Arenas-Uribe, Pilar Navarro, Guido Mancilla-Gutiérrez, Robinson Altamirano, Javiera San Martín, and Camila Soto-Riquelme
Biogeosciences, 21, 1433–1459, https://doi.org/10.5194/bg-21-1433-2024, https://doi.org/10.5194/bg-21-1433-2024, 2024
Short summary
Short summary
The Patagonian fjords comprise a world region where low-oxygen water and hypoxia conditions are observed. An in situ dataset was used to quantify the mechanism involved in the presence of these conditions in northern Patagonian fjords. Water mass analysis confirmed the contribution of Equatorial Subsurface Water in the advection of the low-oxygen water, and hypoxic conditions occurred when the community respiration rate exceeded the gross primary production.
Ting Wang, Buyun Du, Inke Forbrich, Jun Zhou, Joshua Polen, Elsie M. Sunderland, Prentiss H. Balcom, Celia Chen, and Daniel Obrist
Biogeosciences, 21, 1461–1476, https://doi.org/10.5194/bg-21-1461-2024, https://doi.org/10.5194/bg-21-1461-2024, 2024
Short summary
Short summary
The strong seasonal increases of Hg in aboveground biomass during the growing season and the lack of changes observed after senescence in this salt marsh ecosystem suggest physiologically controlled Hg uptake pathways. The Hg sources found in marsh aboveground tissues originate from a mix of sources, unlike terrestrial ecosystems, where atmospheric GEM is the main source. Belowground plant tissues mostly take up Hg from soils. Overall, the salt marsh currently serves as a small net Hg sink.
Eleanor Simpson, Debby Ianson, Karen E. Kohfeld, Ana C. Franco, Paul A. Covert, Marty Davelaar, and Yves Perreault
Biogeosciences, 21, 1323–1353, https://doi.org/10.5194/bg-21-1323-2024, https://doi.org/10.5194/bg-21-1323-2024, 2024
Short summary
Short summary
Shellfish aquaculture operates in nearshore areas where data on ocean acidification parameters are limited. We show daily and seasonal variability in pH and saturation states of calcium carbonate at nearshore aquaculture sites in British Columbia, Canada, and determine the contributing drivers of this variability. We find that nearshore locations have greater variability than open waters and that the uptake of carbon by phytoplankton is the major driver of pH and saturation state variability.
S. Alejandra Castillo Cieza, Rachel H. R. Stanley, Pierre Marrec, Diana N. Fontaine, E. Taylor Crockford, Dennis J. McGillicuddy Jr., Arshia Mehta, Susanne Menden-Deuer, Emily E. Peacock, Tatiana A. Rynearson, Zoe O. Sandwith, Weifeng Zhang, and Heidi M. Sosik
Biogeosciences, 21, 1235–1257, https://doi.org/10.5194/bg-21-1235-2024, https://doi.org/10.5194/bg-21-1235-2024, 2024
Short summary
Short summary
The coastal ocean in the northeastern USA provides many services, including fisheries and habitats for threatened species. In summer 2019, a bloom occurred of a large unusual phytoplankton, the diatom Hemiaulus, with nitrogen-fixing symbionts. This led to vast changes in productivity and grazing rates in the ecosystem. This work shows that the emergence of one species can have profound effects on ecosystem function. Such changes may become more prevalent as the ocean warms due to climate change.
Claudine Hauri, Brita Irving, Sam Dupont, Rémi Pagés, Donna D. W. Hauser, and Seth L. Danielson
Biogeosciences, 21, 1135–1159, https://doi.org/10.5194/bg-21-1135-2024, https://doi.org/10.5194/bg-21-1135-2024, 2024
Short summary
Short summary
Arctic marine ecosystems are highly susceptible to impacts of climate change and ocean acidification. We present pH and pCO2 time series (2016–2020) from the Chukchi Ecosystem Observatory and analyze the drivers of the current conditions to get a better understanding of how climate change and ocean acidification could affect the ecological niches of organisms.
William Hiles, Lucy C. Miller, Craig Smeaton, and William E. N. Austin
Biogeosciences, 21, 929–948, https://doi.org/10.5194/bg-21-929-2024, https://doi.org/10.5194/bg-21-929-2024, 2024
Short summary
Short summary
Saltmarsh soils may help to limit the rate of climate change by storing carbon. To understand their impacts, they must be accurately mapped. We use drone data to estimate the size of three saltmarshes in NE Scotland. We find that drone imagery, combined with tidal data, can reliably inform our understanding of saltmarsh size. When compared with previous work using vegetation communities, we find that our most reliable new estimates of stored carbon are 15–20 % smaller than previously estimated.
De'Marcus Robinson, Anh L. D. Pham, David J. Yousavich, Felix Janssen, Frank Wenzhöfer, Eleanor C. Arrington, Kelsey M. Gosselin, Marco Sandoval-Belmar, Matthew Mar, David L. Valentine, Daniele Bianchi, and Tina Treude
Biogeosciences, 21, 773–788, https://doi.org/10.5194/bg-21-773-2024, https://doi.org/10.5194/bg-21-773-2024, 2024
Short summary
Short summary
The present study suggests that high release of ferrous iron from the seafloor of the oxygen-deficient Santa Barabara Basin (California) supports surface primary productivity, creating positive feedback on seafloor iron release by enhancing low-oxygen conditions in the basin.
David J. Yousavich, De'Marcus Robinson, Xuefeng Peng, Sebastian J. E. Krause, Frank Wenzhöfer, Felix Janssen, Na Liu, Jonathan Tarn, Franklin Kinnaman, David L. Valentine, and Tina Treude
Biogeosciences, 21, 789–809, https://doi.org/10.5194/bg-21-789-2024, https://doi.org/10.5194/bg-21-789-2024, 2024
Short summary
Short summary
Declining oxygen (O2) concentrations in coastal oceans can threaten people’s ways of life and food supplies. Here, we investigate how mats of bacteria that proliferate on the seafloor of the Santa Barbara Basin sustain and potentially worsen these O2 depletion events through their unique chemoautotrophic metabolism. Our study shows how changes in seafloor microbiology and geochemistry brought on by declining O2 concentrations can help these mats grow as well as how that growth affects the basin.
Cited articles
Alcolombri, U., Ben-Dor, S., Feldmesser, E., Levin, Y., Tawfik, D. S., and
Vardi, A.: Identification of the algal dimethyl sulfide–releasing enzyme: A
missing link in the marine sulfur cycle, Science, 348, 1466–1469, 2015.
Andreae, M. O.: Dimethylsulfide in the water column and the sediment
porewaters of the Peru upwelling area, Limnol. Oceanogr., 30,
1208–1218, 1985.
Andreae, M. O. and Barnard, W. R.: Determination of trace quantities of
dimethyl sulfide in aqueous solutions, Anal. Chem., 55, 608–612,
1983.
Asher, E. C., Dacey, J. W. H., Stukel, M., Long, M. C., and Tortell, P. D.:
Processes driving seasonal variability in DMS, DMSP, and DMSO concentrations
and turnover in coastal Antarctic waters, Limnol. Oceanogr., 62,
104–124, 2017.
Bajt, O., Šket, B., and Faganeli, J.: The aqueous photochemical
transformation of acrylic acid, Mar. Chem., 58, 255–259, 1997.
Bentley, R. and Chasteen, T. G.: Environmental VOSCs – formation and
degradation of dimethyl sulfide, methanethiol and related materials,
Chemosphere, 55, 291–317, 2004.
Charlson, R. J., Lovelock, J. E., Andreae, M. O., and Warren, S. G.: Oceanic
phytoplankton, atmospheric sulphur, cloud albedo and climate, Nature, 326,
655–661, 1987.
Curson, A. R. J., Liu, J., Bermejo Martínez, A., Green, R. T., Chan,
Y., Carrión, O., Williams, B. T., Zhang, S.-H., Yang, G.-P., Bulman
Page, P. C., Zhang, X.-H., and Todd, J. D.: Dimethylsulfoniopropionate
biosynthesis in marine bacteria and identification of the key gene in this
process, Nature Microbiol., 2, 17009, https://doi.org/10.1038/nmicrobiol.2017.9, 2017.
Dacey, J. W. and Blough, N. V.: Hydroxide decomposition of
dimethylsulfoniopropionate to form dimethylsulfide, Geophys. Res.
Lett., 14, 1246–1249, 1987.
Dacey, J. W. and Wakeham, S. G.: Oceanic dimethylsulfide: production during
zooplankton grazing on phytoplankton, Science, 233, 1314–1316,
1986.
Deschaseaux, E. S., Jones, G. B., Deseo, M. A., Shepherd, K. M., Kiene, R.
P., Swan, H. B., Harrison, P. L., and Eyre, B. D.: Effects of environmental
factors on dimethylated sulfur compounds and their potential role in the
antioxidant system of the coral holobiont, Limnol. Oceanogr., 59,
758–768, 2014.
Espinosa, M. D. L. L., Martínez, A., Peralta, O., and Castro, T.:
Spatial variability of dimethylsulfide (DMS) and dimethylsulfoniopropionate
(DMSP) in the southern Gulf of Mexico, Environ. Chem., 13, 352–363,
2015.
Gibson, J. A. E., Swadling, K. M., and Burton, H. R.: Acrylate and
Dimenthylsulfoniopropionate (DMSP) Concentrations during an Antarctic
Phytoplankton Bloom, in: Biological and Environmental Chemistry of DMSP and
Related Sulfonium Compounds, edited by: Kiene, R. P., Visscher, P. T.,
Keller, M. D., and Kirst, G. O., Springer US, Boston, MA, 213–222, 1996.
Jin, N.: Studies on Photochemical Process of Dimethylsulfide and its
Transformation Rates in the Yellow Sea and the Bohai Sea, MS thesis, Ocean
University of China, Qingdao, 2016.
Keller, M. D., Bellows, W. K., and Guillard, R. R. L.: Dimethyl sulfide
production in marine phytoplankton, in: Biogenic Sulfur in the Environment,
edited by: Saltzman, E. S. and Cooper, W. J., American Chemical Society,
Washington, DC, 167–182, 1989.
Kiene, R. P. and Gerard, G.: Evaluation of glycine betaine as an inhibitor
of dissolved dimethylsulfoniopropionate degradation in coastal waters,
Mar. Ecol.-Prog. Ser., 128, 121–131, 1995.
Kiene, R. P. and Linn, L. J.: Distribution and turnover of dissolved DMSP
and its relationship with bacterial production and dimethylsulfide in the
Gulf of Mexico, Limnol. Oceanogr., 45, 849–861, 2000a.
Kiene, R. P. and Linn, L. J.: The fate of dissolved
dimethylsulfoniopropionate (DMSP) in seawater: tracer studies using
35S-DMSP, Geochim. Cosmochim. Ac., 64, 2797–2810, 2000b.
Kiene, R. P. and Service, S. K.: Decomposition of dissolved DMSP and DMS in
estuarine waters: dependence on temperature and substrate concentration,
Mar. Ecol.-Prog. Ser., 76, 1–11, 1991.
Kiene, R. P. and Service, S. K.: The Influence of Glycine Betaine on
Dimethyl Sulfide and Dimethylsulfoniopropionate Concentrations in Seawater,
in: Biogeochemistry of Global Change, edited by: Oremland, R. S., Springer
US, Boston, M.A., 654–671, 1993.
Kiene, R. P. and Slezak, D.: Low dissolved DMSP concentrations in seawater
revealed by small-volume gravity filtration and dialysis sampling, Limnol. Oceanogr., 4, 80–95, 2006.
Kiene, R. P., Williams, L. P. H., and Walker, J. E.: Seawater microorganisms
have a high affinity glycine betaine uptake system which also recognizes
dimethylsulfoniopropionate, Aquat. Microb. Ecol., 15, 39–51, 1998.
Kinsey, J. D., Kieber, D. J., and Neale, P. J.: Effects of iron limitation
and UV radiation on Phaeocystis antarctica growth and
dimethylsulfoniopropionate, dimethylsulfoxide and acrylate concentrations,
Environ. Chem., 13, 195–211, 2016.
Kirst, G. O., Thiel, C., Wolff, H., Nothnagel, J., Wanzek, M., and Ulmke,
R.: Dimethylsulfoniopropionate (DMSP) in icealgae and its possible
biological role, Mar. Chem., 35, 381–388, 1991.
Lana, A., Bell, T., Simó, R., Vallina, S., Ballabrera-Poy, J., Kettle,
A., Dachs, J., Bopp, L., Saltzman, E., and Stefels, J.: An updated
climatology of surface dimethlysulfide concentrations and emission fluxes in
the global ocean, Global Biogeochem. Cy., 25, 3–25, 2011.
Ledyard, K. M. and Dacey, J. W.: Microbial cycling of DMSP and DMS in
coastalandoligotrophicseawater, Limnol. Oceanogr., 41, 33–40, 1996.
Lee, H. J., Jung, K. T., Foreman, M., and Chung, J. Y.: A three-dimensional
mixed finite-difference Galerkin function model for the oceanic circulation
in the Yellow Sea and the East China Sea, Cont. Shelf Res., 20,
863–895, 2000.
Levine, N. M., Varaljay, V. A., Toole, D. A., Dacey, J. W., Doney, S. C.,
and Moran, M. A.: Environmental, biochemical and genetic drivers of DMSP
degradation and DMS production in the Sargasso Sea, Environ.
Microbiol., 14, 1210–1223, 2012.
Li, C. X., Yang, G. P., Wang, B. D., and Xu, Z. J.: Vernal distribution and
turnover of dimethylsulfide (DMS) in the surface water of the Yellow Sea,
J. Geophys. Res.-Oceans, 121, 7495–7516, 2016.
Li, C.-Y., Zhang, D., Chen, X.-L., Wang, P., Shi, W.-L., Li, P.-Y., Zhang,
X.-Y., Qin, Q.-L., Todd, J. D., and Zhang, Y.-Z.: Mechanistic Insights into
Dimethylsulfoniopropionate Lyase DddY, a New Member of the Cupin
Superfamily, J. Mol. Biol., 429, 3850–3862, 2017.
Liang, J., Liu, J., Wang, X., Lin, H., Liu, J., Zhou, S., Sun, H., and
Zhang, X.-H.: Spatiotemporal dynamics of free-living and particle-associated
Vibrio communities in the northern Chinese marginal seas, Appl.
Environ. Microbiol., 85, e00217–00219, 2019.
Liu, C. Y., Wang, L. L., Yang, G. P., Chen, Y., and Li, P. F.: Determination
of acrylic acid in seawater by high performance liquid chromatography and
its application, Acta Oceanol. Sin., 35, 172–176, 2013.
Liu, Q.: Analysis and Identification of Organic Compounds and Sifting of
Items of Toxic Organic Compounds for the Water of Yalu River, Urban
Environment & Urban Ecology, 14, 41–43, 2001.
Liu, S., Lou, S., Kuang, C., Huang, W., Chen, W., Zhang, J., and Zhong, G.:
Water quality assessment by pollution-index method in the coastal waters of
Hebei Province in western Bohai Sea, China, Mar. Pollut. Bull., 62,
2220–2229, 2011.
Liu, X., Huang, B., Huang, Q., Wang, L., Ni, X., Tang, Q., Sun, S., Wei, H.,
Liu, S., and Li, C.: Seasonal phytoplankton response to physical processes
in the southern Yellow Sea, J. of Sea Res., 95, 45–55, 2015.
Liu, Y., Liu, C.-Y., Yang, G.-P., Zhang, H.-H., and Zhang, S.-H.:
Biogeochemistry of dimethylsulfoniopropionate, dimethylsulfide and acrylic
acid in the Yellow Sea and the Bohai Sea during autumn, Environ.
Chem., 13, 127–139, 2016.
Lovelock, J. E., Maggs, R. J., and Rasmussen, R. A.: Atmospheric dimethyl
sulphide and the natural sulphur cycle, Nature, 237, 452–453, 1972.
Luan, Q., Sun, J., Shen, Z., Song, S., and Wang, M.: Phytoplankton
assemblage of Yangtze River Estuary and the adjacent East China Sea in
summer, 2004, J. Ocean U. China, 5, 123–131, 2006.
Malin, G. and Erst, G. O.: Algal Production of Dimethyl Sulfide and Its
Atmospheric Role1, J. Phycol., 33, 889–896, 1997.
Malin, G., Turner, S. M., and Liss, P. S.: Sulfur: the plankton/climate
connection, J. Phycol., 28, 590–597, 1992.
McParland, E. L. and Levine, N. M.: The role of differential DMSP
production and community composition in predicting variability of global
surface DMSP concentrations, Limnol. Oceanogr., 64, 757–773, 2019.
Motard-Côté, J., Kieber, D. J., Rellinger, A., and Kiene, R. P.:
Influence of the Mississippi River plume and non-bioavailable DMSP on
dissolved DMSP turnover in the northern Gulf of Mexico, Environ.
Chem., 13, 280–292, 2016.
Nedwell, D. B., Shabbeer, M. T., and Harrison, R. M.: Dimethyl sulphide in
North Sea waters and sediments, Estuar. Coast. Shelf S., 39,
209–217, 1994.
Nguyen, B. C., Mihalopoulos, N., Putaud, J. P., Gaudry, A., Gallet, L.,
Keene, W. C., and Galloway, J. N.: Covariations in oceanic dimethyl sulfide,
its oxidation products and rain acidity at Amsterdam Island in the southern
Indian Ocean, J. Atmos. Chem., 15, 39–53, 1992.
Ning, X., Lin, C., Su, J., Liu, C., Hao, Q., Le, F., and Tang, Q.: Long-term
environmental changes and the responses of the ecosystems in the Bohai Sea
during 1960–1996, Deep-Sea Res. Pt. II, 57, 1079–1091, 2010.
Noordkamp, D. J. B., Gieskes, W. W. C., Gottschal, J. C., Forney, L. J., and
Van Rijssel, M.: Acrylate in Phaeocystis colonies does not affect the
surrounding bacteria, J. Sea Res., 43, 287–296, 2000.
Parsons, T. R., Maita, Y., and Lalli, C. M.: A manual of biological and
chemical methods for seawater analysis, Pergamon Press, Oxford, 1984.
Quinn, P. K. and Bates, T. S.: The case against climate regulation via
oceanic phytoplankton sulphur emissions, Nature, 480, 51–56, 2011.
Reisch, C. R., Moran, M. A., and Whitman, W. B.: Bacterial catabolism of
dimethylsulfoniopropionate (DMSP), Front. Microbiol., 2, 1–12, 2011.
Seeberg-Elverfeldt, J., Schlüter, M., Feseker, T., and Kölling, M.:
Rhizon sampling of porewaters near the sediment-water interface of aquatic
systems, Limnol. Oceanogr.-Meth., 3, 361–371, 2005.
Shenoy, D. M. and Patil, J. S.: Temporal variations in
dimethylsulphoniopropionate and dimethyl sulphide in the Zuari estuary, Goa
(India), Mar. Environ. Res., 56, 387–402, 2003.
Shooter, D. and Brimblecombe, P.: Dimethylsulphide oxidation in the ocean,
Deep-Sea Res. Pt. A, 36, 577–585, 1989.
Sicre, M. A., Peulve, S., Saliot, A., De Leeuw, J. W., and Baas, M.:
Molecular characterization of the organic fraction of suspended matter in
the surface waters and bottom nepheloid layer of the Rhone delta using
analytical pyrolysis, Org. Geochem., 21, 11–26, 1994.
Sieburth, J. M.: Acrylic acid, an “antibiotic” principle in Phaeocystis
blooms in Antarctic waters, Science, 132, 676–677, 1960.
Simó, R., Pedrós-Alió, C., Malin, G., and Grimalt, J. O.:
Biological turnover of DMS, DMSP and DMSO in contrasting open-sea waters,
Mar. Ecol.-Prog. Ser., 203, 1–11, 2000.
Slezak, D., Puskaric, S., and Herndl, G. J.: Potential role of acrylic acid
in bacterioplankton communities in the sea, Mar. Ecol.-Prog. Ser.,
105, 191–197, 1994.
Spiese, C. E., Le, T., Zimmer, R. L., and Kieber, D. J.: Dimethylsulfide
membrane permeability, cellular concentrations and implications for
physiological functions in marine algae, J. Plankton Res., 38,
41–54, 2016.
Stefels, J.: Physiological aspects of the production and conversion of DMSP
in marine algae and higher plants, J. Sea Res., 43, 183–197,
2000.
Steinke, M., Malin, G., Archer, S. D., Burkill, P. H., and Liss, P. S.: DMS
production in a coccolithophorid bloom: evidence for the importance of
dinoflagellate DMSP lyases, Aquat. Microb. Ecol., 26, 259–270, 2002.
Su, J.: Circulation dynamics of the China Seas north of 18∘ N, in:
The Sea, edited by: Robinson, A. R. and Brink, K. H., Wiley, Hoboken, New
Jersey, 483–505, 1998.
Sun, J.: Distribution of Dimethyl Sulfur Compounds in China Marginal Seas
and the Response of Their Algal Release to Acidificaiton MS thesis, Ocean
University of China, Qingdao, 2017.
Sun, J., Liu, D., and Qian, S.: Preliminary study on seasonal succession and
development pathway of phytoplankton community in the Bohai Sea, Acta
Oceanol. Sin., 20, 251–260, 2001.
Sunda, W. G., Kieber, D. J., Kiene, R. P., and Huntsman, S.: An antioxidant
function for DMSP and DMS in marine algae, Nature, 418, 317–320, 2002.
Tan, T.-T., Wu, X., Liu, C.-Y., and Yang, G.-P.: Distributions of
dimethylsulfide and its related compounds in the Yangtze (Changjiang) River
Estuary and its adjacent waters in early summer, Cont. Shelf Res.,
146, 89–101, 2017.
Taylor, B. F. and Visscher, P. T.: Metabolic Pathways Involved in DMSP
Degradation, in: Biological and Environmental Chemistry of DMSP and Related
Sulfonium Compounds, edited by: Kiene, R. P., Visscher, P. T., Keller, M.
D., and Kirst, G. O., Springer US, Boston, MA, 265–276, 1996.
Tyssebotn, I. M. B., Kinsey, J. D., Kieber, D. J., Kiene, R. P., Rellinger,
A. N., and Motard-Côté, J.: Concentrations, biological uptake, and
respiration of dissolved acrylate and dimethylsulfoxide in the northern Gulf
of Mexico, Limnol. Oceanogr., 62, 1198–1218, 2017.
Vairavamurthy, A., Andreae, M. O., and Brooks, J. M.: Determination of
acrylic acid in aqueous samples by electron capture gas chromatography after
extraction with tri-n-octylphosphine oxide and derivatization with
pentafluorobenzyl bromide, Anal. Chem., 58, 2684–2687, 1986.
Wang, K.: Chracteristics of bacterial community in the sediments of the
Bohai Sea and Yellow Seas, revealed by 454-Pyrosequencing, MS thsis, Ocean
University of China, Qingdao, 2015.
Wang, P., Cao, H. Y., Chen, X. L., Li, C. Y., Li, P. Y., Zhang, X. Y., Qin,
Q. L., Todd, J. D., and Zhang, Y. Z.: Mechanistic insight into acrylate
metabolism and detoxification in marine
dimethylsulfoniopropionate-catabolizing bacteria, Mol. Microbiol.,
105, 674–688, 2017.
Wang, X., Cui, Z., Guo, Q., Han, X., and Wang, J.: Distribution of nutrients
and eutrophication assessment in the Bohai Sea of China, Chin. J.
Oceanol. Limn., 27, 177–183, 2009.
Wei, H., Sun, J., Moll, A., and Zhao, L.: Phytoplankton dynamics in the
Bohai Sea – observations and modelling, J. Marine Syst., 44,
233–251, 2004.
Wei, Q.-S., Liu, L., Zhan, R., Wei, X.-H., and Zang, J.-Y.: Distribution
features of the chemical parameters in the Southern Yellow Sea in summer,
Periodical of Ocean University of China, 40, 82–88, 2010.
Wolfe, G. V., Steinke, M., and Kirst, G. O.: Grazing-activated chemical
defence in a unicellular marine alga, Nature, 387, 894–897, 1997.
Wu, X., Liu, C. Y., and Li, P. F.: Photochemical transformation of acrylic
acid in seawater, Mar. Chem., 170, 29–36, 2015.
Wu, X., Li, P. F., Liu, C. Y., Zhang, H. H., Yang, G. P., Zhang, S. H., and
Zhu, M. X.: Biogeochemistry of Dimethylsulfide, Dimethylsulfoniopropionate,
and Acrylic Acid in the Changjiang Estuary and the East China Sea, J. Geophys. Res.-Oceans, 122, 10245–10261, 2017.
Yang, G. P., Song, Y. Z., Zhang, H. H., Li, C. X., and Wu, G. W.: Seasonal
variation and biogeochemical cycling of dimethylsulfide (DMS) and
dimethylsulfoniopropionate (DMSP) in the Yellow Sea and Bohai Sea, J. Geophys. Res.-Oceans, 119, 8897–8915, 2014.
Yang, G. P., Zhang, S. H., Zhang, H. H., Yang, J., and Liu, C. Y.:
Distribution of biogenic sulfur in the Bohai Sea and northern Yellow Sea and
its contribution to atmospheric sulfate aerosol in the late fall, Mar.
Chem., 169, 23–32, 2015a.
Yang, J., Yang, G., Zhang, H., and Zhang, S.: Spatial distribution of
dimethylsulfide and dimethylsulfoniopropionate in the Yellow Sea and Bohai
Sea during summer, Chin. J. Oceanol. Limn., 33,
1020–1038, 2015b.
Zhang, D.: The Study of Phytoplankton and Biosilicon in the Yellow Sea and
the Bohai Sea, MS thesis, Tianjin University of Science and Technology,
Tianjin, 2018.
Zindler, C., Peeken, I., Marandino, C. A., and Bange, H. W.: Environmental control on the variability of DMS and DMSP in the Mauritanian upwelling region, Biogeosciences, 9, 1041–1051, https://doi.org/10.5194/bg-9-1041-2012, 2012.
Short summary
Acrylic acid (AA) exhibited obvious spatial and temporal variations in the Bohai and Yellow seas. Strong biological production and abundant terrestrial inputs led to high AA in summer. Extremely high AA in sediments might result from the cleavage of intracellular DMSP and reduce bacterial metabolism. Degradation experiments of AA and DMSP proved other sources of AA and microbial consumption to be the key removal source. This study provided insightful information on the sulfur cycle these seas.
Acrylic acid (AA) exhibited obvious spatial and temporal variations in the Bohai and Yellow...
Altmetrics
Final-revised paper
Preprint