Results 1 to 10 of about 519,930 (304)

Carbon sequestration by multiple biological pump pathways in a coastal upwelling biome [PDF]

Nature Communications, 2023
Multiple processes transport carbon into the deep ocean as part of the biological carbon pump, leading to long-term carbon sequestration. However, our ability to predict future changes in these processes is hampered by the absence of studies that have ...
Michael R. Stukel, John P. Irving, Thomas B. Kelly, Mark D. Ohman, Christian K. Fender, Natalia Yingling   +5 more
doaj   +2 more sources

Sea Ice Loss leads to regime shifts in the arctic biological pump [PDF]

Nature Communications
The Arctic Ocean has undergone accelerated warming and a marked decline in sea ice over recent decades. Yet, the response of the biological pump—a critical mechanism for atmospheric carbon sequestration—remains poorly understood.
Ming Wu, Yuhan Hu, Chengfeng Le, Fanyu Lin, Tingyu Gu, Peifang Deng, Zong-Pei Jiang, Kui Wang, Yihui Chen, Wei-Lei Wang, Musheng Lan, Ruibo Lei, Jianfeng He, Di Qi, Zhangxian Ouyang, John C. Lehrter, Chuanmin Hu, Wei-Jun Cai   +17 more
doaj   +2 more sources

Review of algorithms estimating export production from satellite derived properties

Frontiers in Marine Science, 2023
Whereas the vertical transport of biomass from productive surface waters to the deep ocean (the biological pump) is a critical component of the global carbon cycle, its magnitude and variability is poorly understood.
Bror F. Jönsson, Gemma Kulk, Gemma Kulk, Shubha Sathyendranath, Shubha Sathyendranath   +4 more
doaj   +1 more source

Slow-sinking particulate organic carbon and its attenuation in the mesopelagic water of the South China Sea

Frontiers in Marine Science, 2022
Coastal acidification has been widely investigated in terms of its rationale and ecological effects in the last decade. However, the driving mechanism for acidification in open seawater, especially in mesopelagic water, is still poorly understood.
Weifeng Yang, Weifeng Yang, Xiufeng Zhao, Xiufeng Zhao, Minfang Zheng   +4 more
doaj   +1 more source

Robust detection of marine life with label-free image feature learning and probability calibration

Machine Learning: Science and Technology, 2023
Advances in in situ marine life imaging have significantly increased the size and quality of available datasets, but automatic image analysis has not kept pace.
Tobias Schanz, Klas Ove Möller, Saskia Rühl, David S Greenberg   +3 more
doaj   +1 more source

Bacterial Metabolic Response to Change in Phytoplankton Communities and Resultant Effects on Carbon Cycles in the Amundsen Sea Polynya, Antarctica

Frontiers in Marine Science, 2022
We investigated changes in heterotrophic bacterial metabolic activities and associated carbon cycles in response to a change in dominant phytoplankton communities during two contrasting environmental conditions in austral summer in the Amundsen Sea ...
Bomina Kim, Bomina Kim, Sung-Han Kim, Sung-Han Kim, Jun-Oh Min, Jun-Oh Min, Youngju Lee, Jinyoung Jung, Tae-Wan Kim, Jae Seong Lee, Eun Jin Yang, Jisoo Park, SangHoon Lee, Jung-Ho Hyun   +13 more
doaj   +1 more source

Influence of atmospheric dust deposition on sinking particle flux in the northwest Pacific

Frontiers in Marine Science, 2023
We examined the flux and composition of sinking particles collected at a water depth of 800 m in the northwest Pacific from November 2017 to August 2018 to assess the impact of dust deposition on organic carbon export.
Hyung Jeek Kim, Dongseon Kim, Young-Gyu Park, Jong-Yeon Park, Ki-Young Choi, Joon Sang Park, Sung Min An, Kyungman Kwon, Jae Hoon Noh, Jeomshik Hwang   +9 more
doaj   +1 more source

Particles act as ‘specialty centers’ with expanded enzymatic function throughout the water column in the western North Atlantic

Frontiers in Microbiology, 2022
Heterotrophic bacteria initiate the degradation of high molecular weight organic matter by producing an array of extracellular enzymes to hydrolyze complex organic matter into sizes that can be taken up into the cell.
C. Chad Lloyd, Sarah Brown, John Paul Balmonte, John Paul Balmonte, Adrienne Hoarfrost, Adrienne Hoarfrost, Sherif Ghobrial, Carol Arnosti   +7 more
doaj   +1 more source

Evolutionary temperature compensation of carbon fixation in marine phytoplankton [PDF]

, 2020
The efficiency of carbon sequestration by the biological pump could decline in the coming decades because respiration tends to increase more with temperature than photosynthesis.
Barton, Samuel, Buckling, Angus, Jenkins, James, Raven, John A., Schaum, C.-Elisa, Smirnoff, Nicholas, Yvon-Durocher, Gabriel   +6 more
core   +3 more sources

Role of zooplankton in determining the efficiency of the biological carbon pump [PDF]

, 2016
The efficiency of the ocean’s biological carbon pump (BCPeff – here the product of particle export and transfer efficiencies) plays a key role in the air-sea partitioning of CO2. Despite its importance in the global carbon cycle, the biological processes
Belcher, Anna, Cavan, Emma L., Henson, Stephanie A., Sanders, Richard   +3 more
core   +4 more sources