Results 21 to 30 of about 59,987 (246)

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

Biogeosciences, 2017
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
E. L. Cavan, S. A. Henson, A. Belcher, R. Sanders   +3 more
doaj   +1 more source

Coupled changes in western South Atlantic carbon sequestration and particle reactive element cycling during millennial-scale Holocene climate variability

Scientific Reports, 2021
Abstract Continental shelves have the potential to remove atmospheric carbon dioxide via the biological pump, burying it in seafloor sediments. The efficiency of marine carbon sequestration changes rapidly due to variations in biological productivity ...
Bruna B. Dias, Alexander M. Piotrowski, Cátia F. Barbosa, Igor M. Venancio, Cristiano M. Chiessi, Ana Luiza S. Albuquerque   +5 more
doaj   +1 more source

Extraordinary Carbon Fluxes on the Shallow Pacific Arctic Shelf During a Remarkably Warm and Low Sea Ice Period

Frontiers in Marine Science, 2020
The shallow Pacific Arctic shelf has historically acted as an effective carbon sink, characterized by tight benthic pelagic coupling. However, the strength of the biological carbon pump in the Arctic has been predicted to weaken with climate change due ...
Stephanie H. O’Daly, Seth L. Danielson, Sarah M. Hardy, Russell R. Hopcroft, Catherine Lalande, Dean A. Stockwell, Andrew M. P. McDonnell   +6 more
doaj   +1 more source

Temporal and regional variabilities in the attenuation of sinking particulate organic carbon in the Kuroshio region

Frontiers in Marine Science, 2022
The biological pump that transports carbon from the surface ocean to the ocean interior is an important determinant of ocean carbon absorption from the atmosphere, and of biological activity beneath the euphotic zone.
Hideki Fukuda, Kiyotaka Hidaka, Takashi Setou, Akira Kusaka, Daisuke Ambe, Hiroaki Saito   +5 more
doaj   +1 more source

Optimal parameters for the ocean's nutrient, carbon, and oxygen cycles compensate for circulation biases but replumb the biological pump [PDF]

Biogeosciences, 2023
Accurate predictive modeling of the ocean's global carbon and oxygen cycles is challenging because of uncertainties in both biogeochemistry and ocean circulation. Advances over the last decade have made parameter optimization feasible, allowing models to
B. Pasquier, M. Holzer, M. A. Chamberlain, R. J. Matear, N. L. Bindoff, F. W. Primeau   +5 more
doaj   +1 more source

Hypoxia-tolerant zooplankton may reduce biological carbon pump efficiency in the Humboldt current system off Peru

Communications Earth & Environment, 2023
In the ocean, downward flux of particles produced in sunlit surface waters is the major component of the biological carbon pump, which sequesters atmospheric carbon dioxide and fuels deep-sea ecosystems.
Anja Engel, Carolina Cisternas-Novoa, Helena Hauss, Rainer Kiko, Frédéric A. C. Le Moigne   +4 more
doaj   +1 more source

Reforming International Fisheries Law Can Increase Blue Carbon Sequestration

Frontiers in Marine Science, 2022
The oceans are by far the largest carbon sink and are estimated to have absorbed roughly 40 percent of anthropogenic carbon dioxide emissions since the beginning of the industrial era.
Niels Krabbe, David Langlet, Andrea Belgrano, Andrea Belgrano, Sebastian Villasante   +4 more
doaj   +1 more source

Variations in the biological pump throughout the Miocene: evidence from organic carbon burial in Pacific Ocean sediments [PDF]

Climate of the Past
The biological pump, defined as the marine biological production and sedimentation of particulate organic carbon (POC), is a fundamental process for fixing atmospheric carbon dioxide in the oceans, transferring carbon away from the atmosphere to the deep
M. Lyle, A. Olivarez Lyle
doaj   +1 more source

Radiocarbon constraints on the glacial ocean circulation and its impact on atmospheric CO2

Nature Communications, 2017
Establishing the efficiency of the biological carbon pump is needed to constrain the impact of ocean circulation on the carbon cycle. Here, the authors compile a global array of ocean–atmosphere radiocarbon disequilibrium estimates and evaluate the ...
L. C. Skinner, F. Primeau, E. Freeman, M. de la Fuente, P. A. Goodwin, J. Gottschalk, E. Huang, I. N. McCave, T. L. Noble, A. E. Scrivner   +9 more
doaj   +1 more source

Pelagic Iron Recycling in the Southern Ocean: Exploring the Contribution of Marine Animals

Frontiers in Marine Science, 2018
The availability of iron controls primary productivity in large areas of the Southern Ocean. Iron is largely supplied via atmospheric dust deposition, melting ice, the weathering of shelf sediments, upwelling, sediment resuspension, mixing (deep water ...
Lavenia Ratnarajah, Steve Nicol, Steve Nicol, Andrew R. Bowie, Andrew R. Bowie   +4 more
doaj   +1 more source