Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation
Fjord systems in higher latitudes are unique coastal water ecosystems that facilitate the study of dissolved organic matter (DOM) dynamics from surface to deeper waters. The current work was undertaken in the Trondheim fjord characterized by North Atlantic waters, and compared DOM fractions from thr...
Published in: | Science of The Total Environment |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2021
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/21558 https://doi.org/10.1016/j.scitotenv.2021.146402 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/21558 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/21558 2023-05-15T17:31:19+02:00 Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation Mathew, K Avarachen Ardelan, Murat Van Villa Gonzalez, Susana Vadstein, Olav Sajith Vezhapparambu, Veena Leiknes, Øystein Mankettikkara, Rahman Olsen, Yngvar 2021-03-19 https://hdl.handle.net/10037/21558 https://doi.org/10.1016/j.scitotenv.2021.146402 eng eng Elsevier Science of the Total Environment Norges teknisk-naturvitenskapelige universitet: Internal Funding EC/FP7: 603773 info:eu-repo/grantAgreement/EC/FP7/603773/EU/Ocean Food-web Patrol – Climate Effects: Reducing Targeted Uncertainties with an Interactive Network/OCEAN-CERTAIN/ Mathew KA, Ardelan M, Villa Gonzalez GS, Vadstein O, Sajith Vezhapparambu V, Leiknes Ø, Mankettikkara R, Olsen Y. Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation. Science of the Total Environment. 2021;782 FRIDAID 1904358 doi:10.1016/j.scitotenv.2021.146402 0048-9697 1879-1026 https://hdl.handle.net/10037/21558 openAccess Copyright 2021 The Author(s) VDP::Matematikk og naturvitenskap: 400 VDP::Mathematics and natural scienses: 400 Marine Science / Marine Scieence Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1016/j.scitotenv.2021.146402 2021-06-30T22:52:36Z Fjord systems in higher latitudes are unique coastal water ecosystems that facilitate the study of dissolved organic matter (DOM) dynamics from surface to deeper waters. The current work was undertaken in the Trondheim fjord characterized by North Atlantic waters, and compared DOM fractions from three depths - surface (3 m), intermediate (225 m) and deep (440 m) in four seasons, from late spring to winter in 2017. The high-resolution mass spectrometry data showed that DOM composition varies significantly in different seasons rather than in different depths in the fjord systems. The bacterial community composition was comparable except at spring surface and summer intermediate depths. Bacterial production was minimal below the euphotic layer, even with sufficient availability of inorganic nutrients. The bacterial production rate in the surface waters was about 7 times and over 50 times higher than that of the aphotic zone in the winter and the summer seasons, respectively. The surface heterotrophic microbial communities might have rapidly consumed the available labile DOM, with the production of more refractory DOM limiting bacterial production in aphotic layers. The greater number of CRAM-like formulas determined in the surface waters compared to other depths supports our hypothesis. The refractory DOM sequestered in the water column may either be exported into sediments attached to particulate matter and marine gels, or may escape into the atmosphere as carbon dioxide/monoxide during the photochemical oxidation pathways, suggesting that it is involved in climate change scenarios. Article in Journal/Newspaper North Atlantic University of Tromsø: Munin Open Research Archive Science of The Total Environment 782 146402 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400 VDP::Mathematics and natural scienses: 400 Marine Science / Marine Scieence |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400 VDP::Mathematics and natural scienses: 400 Marine Science / Marine Scieence Mathew, K Avarachen Ardelan, Murat Van Villa Gonzalez, Susana Vadstein, Olav Sajith Vezhapparambu, Veena Leiknes, Øystein Mankettikkara, Rahman Olsen, Yngvar Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation |
topic_facet |
VDP::Matematikk og naturvitenskap: 400 VDP::Mathematics and natural scienses: 400 Marine Science / Marine Scieence |
description |
Fjord systems in higher latitudes are unique coastal water ecosystems that facilitate the study of dissolved organic matter (DOM) dynamics from surface to deeper waters. The current work was undertaken in the Trondheim fjord characterized by North Atlantic waters, and compared DOM fractions from three depths - surface (3 m), intermediate (225 m) and deep (440 m) in four seasons, from late spring to winter in 2017. The high-resolution mass spectrometry data showed that DOM composition varies significantly in different seasons rather than in different depths in the fjord systems. The bacterial community composition was comparable except at spring surface and summer intermediate depths. Bacterial production was minimal below the euphotic layer, even with sufficient availability of inorganic nutrients. The bacterial production rate in the surface waters was about 7 times and over 50 times higher than that of the aphotic zone in the winter and the summer seasons, respectively. The surface heterotrophic microbial communities might have rapidly consumed the available labile DOM, with the production of more refractory DOM limiting bacterial production in aphotic layers. The greater number of CRAM-like formulas determined in the surface waters compared to other depths supports our hypothesis. The refractory DOM sequestered in the water column may either be exported into sediments attached to particulate matter and marine gels, or may escape into the atmosphere as carbon dioxide/monoxide during the photochemical oxidation pathways, suggesting that it is involved in climate change scenarios. |
format |
Article in Journal/Newspaper |
author |
Mathew, K Avarachen Ardelan, Murat Van Villa Gonzalez, Susana Vadstein, Olav Sajith Vezhapparambu, Veena Leiknes, Øystein Mankettikkara, Rahman Olsen, Yngvar |
author_facet |
Mathew, K Avarachen Ardelan, Murat Van Villa Gonzalez, Susana Vadstein, Olav Sajith Vezhapparambu, Veena Leiknes, Øystein Mankettikkara, Rahman Olsen, Yngvar |
author_sort |
Mathew, K Avarachen |
title |
Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation |
title_short |
Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation |
title_full |
Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation |
title_fullStr |
Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation |
title_full_unstemmed |
Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation |
title_sort |
temporal dynamics of carbon sequestration in coastal north atlantic fjord system as seen through dissolved organic matter characterisation |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/21558 https://doi.org/10.1016/j.scitotenv.2021.146402 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Science of the Total Environment Norges teknisk-naturvitenskapelige universitet: Internal Funding EC/FP7: 603773 info:eu-repo/grantAgreement/EC/FP7/603773/EU/Ocean Food-web Patrol – Climate Effects: Reducing Targeted Uncertainties with an Interactive Network/OCEAN-CERTAIN/ Mathew KA, Ardelan M, Villa Gonzalez GS, Vadstein O, Sajith Vezhapparambu V, Leiknes Ø, Mankettikkara R, Olsen Y. Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation. Science of the Total Environment. 2021;782 FRIDAID 1904358 doi:10.1016/j.scitotenv.2021.146402 0048-9697 1879-1026 https://hdl.handle.net/10037/21558 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1016/j.scitotenv.2021.146402 |
container_title |
Science of The Total Environment |
container_volume |
782 |
container_start_page |
146402 |
_version_ |
1766128830073798656 |