A visual tour of carbon export by sinking particles

© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Durkin, C. A., Buesseler, K. O., Cetinic, I., Estapa, M. L., Kelly, R. P., & Omand, M. A visual tour of carbon export by sinking particles. Glob...

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Published in:Global Biogeochemical Cycles
Main Authors: Durkin, Colleen A., Buesseler, Ken O., Cetinić, Ivona, Estapa, Margaret L., Kelly, Roger P., Omand, Melissa M.
Format: Article in Journal/Newspaper
Language:unknown
Published: American Geophysical Union 2021
Subjects:
Online Access:https://hdl.handle.net/1912/27955
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spelling ftwhoas:oai:darchive.mblwhoilibrary.org:1912/27955 2023-05-15T18:28:37+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 M. 2021-10-06 https://hdl.handle.net/1912/27955 unknown American Geophysical Union https://doi.org/10.1029/2021GB006985 Durkin, C. A., Buesseler, K. O., Cetinic, I., Estapa, M. L., Kelly, R. P., & Omand, M. (2021). A visual tour of carbon export by sinking particles. Global Biogeochemical Cycles, 35(10), e2021GB006985. https://hdl.handle.net/1912/27955 doi:10.1029/2021GB006985 Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ CC-BY-NC Durkin, C. A., Buesseler, K. O., Cetinic, I., Estapa, M. L., Kelly, R. P., & Omand, M. (2021). A visual tour of carbon export by sinking particles. Global Biogeochemical Cycles, 35(10), e2021GB006985. doi:10.1029/2021GB006985 Biological carbon pump Sediment traps Fecal pellets Aggregates Particles Salp Article 2021 ftwhoas https://doi.org/10.1029/2021GB006985 2022-10-29T22:57:24Z © The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Durkin, C. A., Buesseler, K. O., Cetinic, I., Estapa, M. L., Kelly, R. P., & Omand, M. A visual tour of carbon export by sinking particles. Global Biogeochemical Cycles, 35(10), (2021): e2021GB006985, https://doi.org/10.1029/2021GB006985. 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 ... Article in Journal/Newspaper Subarctic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Pacific Global Biogeochemical Cycles 35 10
institution Open Polar
collection Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
op_collection_id ftwhoas
language unknown
topic Biological carbon pump
Sediment traps
Fecal pellets
Aggregates
Particles
Salp
spellingShingle Biological carbon pump
Sediment traps
Fecal pellets
Aggregates
Particles
Salp
Durkin, Colleen A.
Buesseler, Ken O.
Cetinić, Ivona
Estapa, Margaret L.
Kelly, Roger P.
Omand, Melissa M.
A visual tour of carbon export by sinking particles
topic_facet Biological carbon pump
Sediment traps
Fecal pellets
Aggregates
Particles
Salp
description © The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Durkin, C. A., Buesseler, K. O., Cetinic, I., Estapa, M. L., Kelly, R. P., & Omand, M. A visual tour of carbon export by sinking particles. Global Biogeochemical Cycles, 35(10), (2021): e2021GB006985, https://doi.org/10.1029/2021GB006985. 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 ...
format Article in Journal/Newspaper
author Durkin, Colleen A.
Buesseler, Ken O.
Cetinić, Ivona
Estapa, Margaret L.
Kelly, Roger P.
Omand, Melissa M.
author_facet Durkin, Colleen A.
Buesseler, Ken O.
Cetinić, Ivona
Estapa, Margaret L.
Kelly, Roger P.
Omand, Melissa M.
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 American Geophysical Union
publishDate 2021
url https://hdl.handle.net/1912/27955
geographic Pacific
geographic_facet Pacific
genre Subarctic
genre_facet Subarctic
op_source Durkin, C. A., Buesseler, K. O., Cetinic, I., Estapa, M. L., Kelly, R. P., & Omand, M. (2021). A visual tour of carbon export by sinking particles. Global Biogeochemical Cycles, 35(10), e2021GB006985.
doi:10.1029/2021GB006985
op_relation https://doi.org/10.1029/2021GB006985
Durkin, C. A., Buesseler, K. O., Cetinic, I., Estapa, M. L., Kelly, R. P., & Omand, M. (2021). A visual tour of carbon export by sinking particles. Global Biogeochemical Cycles, 35(10), e2021GB006985.
https://hdl.handle.net/1912/27955
doi:10.1029/2021GB006985
op_rights Attribution-NonCommercial 4.0 International
http://creativecommons.org/licenses/by-nc/4.0/
op_rightsnorm CC-BY-NC
op_doi https://doi.org/10.1029/2021GB006985
container_title Global Biogeochemical Cycles
container_volume 35
container_issue 10
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