Evidence for the Impact of Climate Change on Primary Producers in the Southern Ocean
Within the framework of the Marine Ecosystem Assessment for the Southern Ocean (MEASO), this paper brings together analyses of recent trends in phytoplankton biomass, primary production and irradiance at the base of the mixed layer in the Southern Ocean and summarises future projections. Satellite o...
Published in: | Frontiers in Ecology and Evolution |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Frontiers Media S.A.
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3389/fevo.2021.592027 https://doaj.org/article/4b8eee6967644a7c8c3108339369aa61 |
id |
ftdoajarticles:oai:doaj.org/article:4b8eee6967644a7c8c3108339369aa61 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:4b8eee6967644a7c8c3108339369aa61 2023-05-15T13:37:19+02:00 Evidence for the Impact of Climate Change on Primary Producers in the Southern Ocean Matthew H. Pinkerton Philip W. Boyd Stacy Deppeler Alex Hayward Juan Höfer Sebastien Moreau 2021-05-01T00:00:00Z https://doi.org/10.3389/fevo.2021.592027 https://doaj.org/article/4b8eee6967644a7c8c3108339369aa61 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fevo.2021.592027/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2021.592027 https://doaj.org/article/4b8eee6967644a7c8c3108339369aa61 Frontiers in Ecology and Evolution, Vol 9 (2021) phytoplankton climate Antarctica biogeochemistry deep chlorophyll maximum ocean colour Evolution QH359-425 Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.3389/fevo.2021.592027 2022-12-31T11:59:42Z Within the framework of the Marine Ecosystem Assessment for the Southern Ocean (MEASO), this paper brings together analyses of recent trends in phytoplankton biomass, primary production and irradiance at the base of the mixed layer in the Southern Ocean and summarises future projections. Satellite observations suggest that phytoplankton biomass in the mixed-layer has increased over the last 20 years in most (but not all) parts of the Southern Ocean, whereas primary production at the base of the mixed-layer has likely decreased over the same period. Different satellite models of primary production (Vertically Generalised versus Carbon Based Production Models) give different patterns and directions of recent change in net primary production (NPP). At present, the satellite record is not long enough to distinguish between trends and climate-related cycles in primary production. Over the next 100 years, Earth system models project increasing NPP in the water column in the MEASO northern and Antarctic zones but decreases in the Subantarctic zone. Low confidence in these projections arises from: (1) the difficulty in mapping supply mechanisms for key nutrients (silicate, iron); and (2) understanding the effects of multiple stressors (including irradiance, nutrients, temperature, pCO2, pH, grazing) on different species of Antarctic phytoplankton. Notwithstanding these uncertainties, there are likely to be changes to the seasonal patterns of production and the microbial community present over the next 50–100 years and these changes will have ecological consequences across Southern Ocean food-webs, especially on key species such as Antarctic krill and silverfish. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctica Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean Frontiers in Ecology and Evolution 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
phytoplankton climate Antarctica biogeochemistry deep chlorophyll maximum ocean colour Evolution QH359-425 Ecology QH540-549.5 |
spellingShingle |
phytoplankton climate Antarctica biogeochemistry deep chlorophyll maximum ocean colour Evolution QH359-425 Ecology QH540-549.5 Matthew H. Pinkerton Philip W. Boyd Stacy Deppeler Alex Hayward Juan Höfer Sebastien Moreau Evidence for the Impact of Climate Change on Primary Producers in the Southern Ocean |
topic_facet |
phytoplankton climate Antarctica biogeochemistry deep chlorophyll maximum ocean colour Evolution QH359-425 Ecology QH540-549.5 |
description |
Within the framework of the Marine Ecosystem Assessment for the Southern Ocean (MEASO), this paper brings together analyses of recent trends in phytoplankton biomass, primary production and irradiance at the base of the mixed layer in the Southern Ocean and summarises future projections. Satellite observations suggest that phytoplankton biomass in the mixed-layer has increased over the last 20 years in most (but not all) parts of the Southern Ocean, whereas primary production at the base of the mixed-layer has likely decreased over the same period. Different satellite models of primary production (Vertically Generalised versus Carbon Based Production Models) give different patterns and directions of recent change in net primary production (NPP). At present, the satellite record is not long enough to distinguish between trends and climate-related cycles in primary production. Over the next 100 years, Earth system models project increasing NPP in the water column in the MEASO northern and Antarctic zones but decreases in the Subantarctic zone. Low confidence in these projections arises from: (1) the difficulty in mapping supply mechanisms for key nutrients (silicate, iron); and (2) understanding the effects of multiple stressors (including irradiance, nutrients, temperature, pCO2, pH, grazing) on different species of Antarctic phytoplankton. Notwithstanding these uncertainties, there are likely to be changes to the seasonal patterns of production and the microbial community present over the next 50–100 years and these changes will have ecological consequences across Southern Ocean food-webs, especially on key species such as Antarctic krill and silverfish. |
format |
Article in Journal/Newspaper |
author |
Matthew H. Pinkerton Philip W. Boyd Stacy Deppeler Alex Hayward Juan Höfer Sebastien Moreau |
author_facet |
Matthew H. Pinkerton Philip W. Boyd Stacy Deppeler Alex Hayward Juan Höfer Sebastien Moreau |
author_sort |
Matthew H. Pinkerton |
title |
Evidence for the Impact of Climate Change on Primary Producers in the Southern Ocean |
title_short |
Evidence for the Impact of Climate Change on Primary Producers in the Southern Ocean |
title_full |
Evidence for the Impact of Climate Change on Primary Producers in the Southern Ocean |
title_fullStr |
Evidence for the Impact of Climate Change on Primary Producers in the Southern Ocean |
title_full_unstemmed |
Evidence for the Impact of Climate Change on Primary Producers in the Southern Ocean |
title_sort |
evidence for the impact of climate change on primary producers in the southern ocean |
publisher |
Frontiers Media S.A. |
publishDate |
2021 |
url |
https://doi.org/10.3389/fevo.2021.592027 https://doaj.org/article/4b8eee6967644a7c8c3108339369aa61 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctica Southern Ocean |
op_source |
Frontiers in Ecology and Evolution, Vol 9 (2021) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fevo.2021.592027/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2021.592027 https://doaj.org/article/4b8eee6967644a7c8c3108339369aa61 |
op_doi |
https://doi.org/10.3389/fevo.2021.592027 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
9 |
_version_ |
1766090392063705088 |