Results 61 to 70 of about 4,176,998 (193)

Research progress in calculating net community production of marine ecosystem by remote sensing

Frontiers in Marine Science, 2023
Net community production (NCP) is defined as the difference between gross primary production (GPP) and total community respiration (R). NCP indicates the balance between the production and consumption of community organic carbon, therefore making it a ...
Yingqi Wang, Kui Wang, Kui Wang, Yan Bai, Di Wu, Hao Zheng   +5 more
doaj   +1 more source

Marine carbon sink dominated by biological pump after temperature overshoot

Nature Geoscience
In the event of insufficient mitigation efforts, net-negative CO2 emissions may be required to return climate warming to acceptable limits as defined by the Paris Agreement.
W. Koeve, A. Landolfi, A. Oschlies, Ivy Frenger   +3 more
semanticscholar   +1 more source

Influence of Sediment Resuspension on the Biological Pump of the Southwestern East Sea (Japan Sea)

Frontiers in Earth Science, 2020
The biological carbon pump in the southwestern East Sea (Japan Sea, EJS hereafter) was investigated based on examination of sinking particulate matter samples intercepted by bottom-tethered sediment traps deployed on a mooring at three depths (500, 1000,
Minkyoung Kim, Young-il Kim, Jeomshik Hwang, K. Choi, Chang Joon Kim, Y. Ryu, Ji-Eun Park, Kyung-Ae Park, Jae-Hyoung Park, S. Nam, N. Haghipour, T. Eglinton   +11 more
semanticscholar   +1 more source

Important Contribution of Bacterial Carbon and Nitrogen to Sinking Particle Export

Geophysical Research Letters, 2023
Photosynthesis in the surface ocean converts atmospheric CO2 into organic particles, with the fraction sinking to depth representing a major part of the ocean's biological pump.
Yuan Shen, Thomas P. Guilderson, Francisco P. Chavez, Matthew D. McCarthy   +3 more
doaj   +1 more source

The Trophic Cascade Effects of Marine Mesozooplankton: Theory, Dynamics, and Responses to Global Change

Microorganisms
Marine mesozooplankton (0.2–20 mm), as a critical trophic link between primary producers and higher trophic levels, are pivotal drivers of trophic cascades regulating pelagic ecosystem structure and function.
Mianrun Chen
doaj   +1 more source

Ocean Biogeochemical Fingerprints of Fast‐Sinking Tunicate and Fish Detritus

Geophysical Research Letters
Pelagic tunicates (salps, pyrosomes) and fishes generate jelly falls and/or fecal pellets that sink roughly 10 times faster than bulk oceanic detritus, but their impacts on biogeochemical cycles in the ocean interior are poorly understood.
Jessica Y. Luo, Charles A. Stock, John P. Dunne, Grace K. Saba, Lauren Cook   +4 more
doaj   +1 more source

A carbon budget for the Amundsen Sea Polynya, Antarctica: Estimating net community production and export in a highly productive polar ecosystem

Elementa: Science of the Anthropocene, 2016
Polynyas, or recurring areas of seasonally open water surrounded by sea ice, are foci for energy and material transfer between the atmosphere and the polar ocean.
PL Yager, RM Sherrell, SE Stammerjohn, HW Ducklow, OME Schofield, ED Ingall, SE Wilson, KE Lowry, CM Williams, L Riemann, S Bertilsson, A-C Alderkamp, J Dinasquet, R Logares, I Richert, RE Sipler, AJ Melara, L Mu, RG Newstead, AF Post, R Swalethorp, GL van Dijken   +21 more
doaj   +1 more source

Autonomous Observations of the Ocean Biological Carbon Pump [PDF]

Oceanography, 2009
Prediction of the substantial biologically mediated carbon flows in a rapidly changing and acidifying ocean requires model simulations informed by observations of key carbon cycle processes on the appropriate spatial and temporal scales. From 2000 to 2004, the National Oceanographic Partnership Program (NOPP) supported the development of the first low ...
openaire   +3 more sources

Atmospheric pCO2 Response to Stimulated Organic Carbon Export: Sensitivity Patterns and Timescales

Geophysical Research Letters
The ocean's organic carbon export is a key control on atmospheric pCO2 and stimulating this export could potentially mitigate climate change. We use a data‐constrained model to calculate the sensitivity of atmospheric pCO2 to local changes in export ...
Mark Holzer, Tim DeVries, Benoît Pasquier   +2 more
doaj   +1 more source

Quantifying the Carbon Export and Sequestration Pathways of the Ocean's Biological Carbon Pump

Global Biogeochemical Cycles, 2022
The ocean's biological carbon pump transfers carbon from the surface ocean to the deep ocean by several distinct pathways, including gravitational settling of organic particles, mixing and advection of suspended organic carbon, and active transport by ...
M. Nowicki, T. DeVries, David A. Siegel
semanticscholar   +1 more source