Results 1 to 10 of about 1,175 (212)

The sequestration efficiency of the biological pump [PDF]

Geophysical Research Letters, 2012
The conversion of dissolved nutrients and carbon to organic matter by phytoplankton in the surface ocean, and its downward transport by sinking particles, produces a “biological pump” that reduces the concentration of atmospheric CO2. Global rates of organic matter export are a poor indicator of biological carbon storage however, because organic matter
François Primeau, Tim Devries
exaly   +4 more sources

The biological pump effects of phytoplankton on the occurrence and benthic bioaccumulation of hydrophobic organic contaminants (HOCs) in a hypereutrophic lake

Ecotoxicology and Environmental Safety, 2021
The distribution of hydrophobic organic contaminants (HOCs) in eutrophic ecosystems has been widely studied, but how phytoplankton blooms affect their occurrence and benthic bioaccumulation is poorly understood. To fill this knowledge gap, the biological
Qiqi Ding, Xionghu Gong, Miao Jin, Xiaolong Yao, Lu Zhang, Zhonghua Zhao   +5 more
doaj   +3 more sources

Exploitation of mesopelagic fish stocks can impair the biological pump and food web dynamics in the ocean

Frontiers in Marine Science
The demand for marine living resources is increasing at an unprecedented scale because of the need for continuous food provision to the world’s population. The potential of already exploited fish stocks to meet this demand is limited.
Deniz Dişa, Ekin Akoglu, Ekin Akoglu, Baris Salihoglu, Baris Salihoglu   +4 more
doaj   +3 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

Ion pumps as biological targets for decavanadate [PDF]

Dalton Transactions, 2013
The putative applications of poly-, oligo- and mono-oxometalates in biochemistry, biology, pharmacology and medicine are rapidly attracting interest. In particular, these compounds may act as potent ion pump inhibitors and have the potential to play a role in the treatment of e.g. ulcers, cancer and ischemic heart disease.
Manuel, Aureliano, Gil, Fraqueza, C André, Ohlin   +2 more
openaire   +4 more sources

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