A Visual Tour of Carbon Export by Sinking Particles
To better quantify the ocean's biological carbon pump, we resolved the diversity of sinking particles that transport carbon into the ocean's interior, their contribution to carbon export, and their attenuation with depth. Sinking particles collected in sediment trap gel layers from four di...
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ftpubmed:oai:pubmedcentral.nih.gov:9286655 2023-05-15T18:28:30+02:00 A Visual Tour of Carbon Export by Sinking Particles Durkin, Colleen A. Buesseler, Ken O. Cetinić, Ivona Estapa, Margaret L. Kelly, Roger P. Omand, Melissa 2021-10-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9286655/ http://www.ncbi.nlm.nih.gov/pubmed/35865105 https://doi.org/10.1029/2021GB006985 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9286655/ http://www.ncbi.nlm.nih.gov/pubmed/35865105 http://dx.doi.org/10.1029/2021GB006985 © 2021 The Authors. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. CC-BY-NC Global Biogeochem Cycles Research Article Text 2021 ftpubmed https://doi.org/10.1029/2021GB006985 2022-07-31T01:44:33Z To better quantify the ocean's biological carbon pump, we resolved the diversity of sinking particles that transport carbon into the ocean's interior, their contribution to carbon export, and their attenuation with depth. Sinking particles collected in sediment trap gel layers from four distinct ocean ecosystems were imaged, measured, and classified. The size and identity of particles was used to model their contribution to particulate organic carbon (POC) flux. Measured POC fluxes were reasonably predicted by particle images. Nine particle types were identified, and most of the compositional variability was driven by the relative contribution of aggregates, long cylindrical fecal pellets, and salp fecal pellets. While particle composition varied across locations and seasons, the entire range of compositions was measured at a single well‐observed location in the subarctic North Pacific over one month, across 500 m of depth. The magnitude of POC flux was not consistently associated with a dominant particle class, but particle classes did influence flux attenuation. Long fecal pellets attenuated most rapidly with depth whereas certain other classes attenuated little or not at all with depth. Small particles (<100 μm) consistently contributed ∼5% to total POC flux in samples with higher magnitude fluxes. The relative importance of these small particle classes (spherical mini pellets, short oval fecal pellets, and dense detritus) increased in low flux environments (up to 46% of total POC flux). Imaging approaches that resolve large variations in particle composition across ocean basins, depth, and time will help to better parameterize biological carbon pump models. Text Subarctic PubMed Central (PMC) Pacific Global Biogeochemical Cycles 35 10 |
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English |
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Research Article |
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Research Article Durkin, Colleen A. Buesseler, Ken O. Cetinić, Ivona Estapa, Margaret L. Kelly, Roger P. Omand, Melissa A Visual Tour of Carbon Export by Sinking Particles |
topic_facet |
Research Article |
description |
To better quantify the ocean's biological carbon pump, we resolved the diversity of sinking particles that transport carbon into the ocean's interior, their contribution to carbon export, and their attenuation with depth. Sinking particles collected in sediment trap gel layers from four distinct ocean ecosystems were imaged, measured, and classified. The size and identity of particles was used to model their contribution to particulate organic carbon (POC) flux. Measured POC fluxes were reasonably predicted by particle images. Nine particle types were identified, and most of the compositional variability was driven by the relative contribution of aggregates, long cylindrical fecal pellets, and salp fecal pellets. While particle composition varied across locations and seasons, the entire range of compositions was measured at a single well‐observed location in the subarctic North Pacific over one month, across 500 m of depth. The magnitude of POC flux was not consistently associated with a dominant particle class, but particle classes did influence flux attenuation. Long fecal pellets attenuated most rapidly with depth whereas certain other classes attenuated little or not at all with depth. Small particles (<100 μm) consistently contributed ∼5% to total POC flux in samples with higher magnitude fluxes. The relative importance of these small particle classes (spherical mini pellets, short oval fecal pellets, and dense detritus) increased in low flux environments (up to 46% of total POC flux). Imaging approaches that resolve large variations in particle composition across ocean basins, depth, and time will help to better parameterize biological carbon pump models. |
format |
Text |
author |
Durkin, Colleen A. Buesseler, Ken O. Cetinić, Ivona Estapa, Margaret L. Kelly, Roger P. Omand, Melissa |
author_facet |
Durkin, Colleen A. Buesseler, Ken O. Cetinić, Ivona Estapa, Margaret L. Kelly, Roger P. Omand, Melissa |
author_sort |
Durkin, Colleen A. |
title |
A Visual Tour of Carbon Export by Sinking Particles |
title_short |
A Visual Tour of Carbon Export by Sinking Particles |
title_full |
A Visual Tour of Carbon Export by Sinking Particles |
title_fullStr |
A Visual Tour of Carbon Export by Sinking Particles |
title_full_unstemmed |
A Visual Tour of Carbon Export by Sinking Particles |
title_sort |
visual tour of carbon export by sinking particles |
publisher |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9286655/ http://www.ncbi.nlm.nih.gov/pubmed/35865105 https://doi.org/10.1029/2021GB006985 |
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Pacific |
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Pacific |
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Subarctic |
genre_facet |
Subarctic |
op_source |
Global Biogeochem Cycles |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9286655/ http://www.ncbi.nlm.nih.gov/pubmed/35865105 http://dx.doi.org/10.1029/2021GB006985 |
op_rights |
© 2021 The Authors. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
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CC-BY-NC |
op_doi |
https://doi.org/10.1029/2021GB006985 |
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Global Biogeochemical Cycles |
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35 |
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10 |
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1766211009883668480 |