Supplementary material from "Climate change and diminishing seasonality in Arctic benthic processes"
The iconic picture of Arctic marine ecosystems shows an intense pulse of biological productivity around the spring bloom that is sustained while fresh organic matter (OM) is available, after which ecosystem activity declines to basal levels in autumn and winter. We investigated seasonality in benthi...
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ftdatacite:10.6084/m9.figshare.c.5056725.v1 2023-05-15T14:43:54+02:00 Supplementary material from "Climate change and diminishing seasonality in Arctic benthic processes" Morata, Nathalie Michaud, Emma Marie-Aude Poullaouec Devesa, Jérémy Goff, Manon Le Corvaisier, Rudolph Renaud, Paul E. 2020 https://dx.doi.org/10.6084/m9.figshare.c.5056725.v1 https://rs.figshare.com/collections/Supplementary_material_from_Climate_change_and_diminishing_seasonality_in_Arctic_benthic_processes_/5056725/1 unknown The Royal Society https://dx.doi.org/10.1098/rsta.2019.0369 https://dx.doi.org/10.6084/m9.figshare.c.5056725 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geochemistry FOS Earth and related environmental sciences Oceanography Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.5056725.v1 https://doi.org/10.1098/rsta.2019.0369 https://doi.org/10.6084/m9.figshare.c.5056725 2021-11-05T12:55:41Z The iconic picture of Arctic marine ecosystems shows an intense pulse of biological productivity around the spring bloom that is sustained while fresh organic matter (OM) is available, after which ecosystem activity declines to basal levels in autumn and winter. We investigated seasonality in benthic biogeochemical cycling at three stations in a high-Arctic fjord that has recently lost much of its seasonal ice-cover. Unlike observations from other Arctic locations, we find little seasonality in sediment community respiration and bioturbation rates, although different sediment reworking modes varied through the year. Nutrient fluxes did vary, suggesting that, although OM was processed at similar rates, seasonality in its quality led to spring/summer peaks in inorganic nitrogen and silicate fluxes. These patterns correspond to published information on seasonality in vertical flux at the stations. Largely ice-free Kongsfjorden has a considerable detrital pool in soft sediments which sustain benthic communities over the year. Sources of this include macroalgae and terrestrial runoff. Climate change leading to less ice cover, higher light availability and expanded benthic habitat, may lead to more detrital carbon in the system, dampening the quantitative importance of seasonal pulses of phytodetritus to seafloor communities in some areas of the Arctic.This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems'. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Kongsfjord* Kongsfjorden DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
unknown |
topic |
Geochemistry FOS Earth and related environmental sciences Oceanography |
spellingShingle |
Geochemistry FOS Earth and related environmental sciences Oceanography Morata, Nathalie Michaud, Emma Marie-Aude Poullaouec Devesa, Jérémy Goff, Manon Le Corvaisier, Rudolph Renaud, Paul E. Supplementary material from "Climate change and diminishing seasonality in Arctic benthic processes" |
topic_facet |
Geochemistry FOS Earth and related environmental sciences Oceanography |
description |
The iconic picture of Arctic marine ecosystems shows an intense pulse of biological productivity around the spring bloom that is sustained while fresh organic matter (OM) is available, after which ecosystem activity declines to basal levels in autumn and winter. We investigated seasonality in benthic biogeochemical cycling at three stations in a high-Arctic fjord that has recently lost much of its seasonal ice-cover. Unlike observations from other Arctic locations, we find little seasonality in sediment community respiration and bioturbation rates, although different sediment reworking modes varied through the year. Nutrient fluxes did vary, suggesting that, although OM was processed at similar rates, seasonality in its quality led to spring/summer peaks in inorganic nitrogen and silicate fluxes. These patterns correspond to published information on seasonality in vertical flux at the stations. Largely ice-free Kongsfjorden has a considerable detrital pool in soft sediments which sustain benthic communities over the year. Sources of this include macroalgae and terrestrial runoff. Climate change leading to less ice cover, higher light availability and expanded benthic habitat, may lead to more detrital carbon in the system, dampening the quantitative importance of seasonal pulses of phytodetritus to seafloor communities in some areas of the Arctic.This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems'. |
format |
Article in Journal/Newspaper |
author |
Morata, Nathalie Michaud, Emma Marie-Aude Poullaouec Devesa, Jérémy Goff, Manon Le Corvaisier, Rudolph Renaud, Paul E. |
author_facet |
Morata, Nathalie Michaud, Emma Marie-Aude Poullaouec Devesa, Jérémy Goff, Manon Le Corvaisier, Rudolph Renaud, Paul E. |
author_sort |
Morata, Nathalie |
title |
Supplementary material from "Climate change and diminishing seasonality in Arctic benthic processes" |
title_short |
Supplementary material from "Climate change and diminishing seasonality in Arctic benthic processes" |
title_full |
Supplementary material from "Climate change and diminishing seasonality in Arctic benthic processes" |
title_fullStr |
Supplementary material from "Climate change and diminishing seasonality in Arctic benthic processes" |
title_full_unstemmed |
Supplementary material from "Climate change and diminishing seasonality in Arctic benthic processes" |
title_sort |
supplementary material from "climate change and diminishing seasonality in arctic benthic processes" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5056725.v1 https://rs.figshare.com/collections/Supplementary_material_from_Climate_change_and_diminishing_seasonality_in_Arctic_benthic_processes_/5056725/1 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change Kongsfjord* Kongsfjorden |
genre_facet |
Arctic Arctic Ocean Climate change Kongsfjord* Kongsfjorden |
op_relation |
https://dx.doi.org/10.1098/rsta.2019.0369 https://dx.doi.org/10.6084/m9.figshare.c.5056725 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5056725.v1 https://doi.org/10.1098/rsta.2019.0369 https://doi.org/10.6084/m9.figshare.c.5056725 |
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