Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response
Concurrent changes in ocean chemical and physical properties influence phytoplankton dynamics via alterations in carbonate chemistry, nutrient and trace metal inventories and upper ocean light environment. Using a fully coupled, global carbon-climate model (Climate System Model 1.4-carbon), we quant...
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ftdoajarticles:oai:doaj.org/article:eade2ca8c739461b9d9016472f3eeff1 2023-05-15T18:24:52+02:00 Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response P. W. Boyd S. C. Doney R. Strzepek J. Dusenberry K. Lindsay I. Fung 2008-05-01T00:00:00Z https://doaj.org/article/eade2ca8c739461b9d9016472f3eeff1 EN eng Copernicus Publications http://www.biogeosciences.net/5/847/2008/bg-5-847-2008.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/eade2ca8c739461b9d9016472f3eeff1 Biogeosciences, Vol 5, Iss 3, Pp 847-864 (2008) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2008 ftdoajarticles 2022-12-30T21:42:11Z Concurrent changes in ocean chemical and physical properties influence phytoplankton dynamics via alterations in carbonate chemistry, nutrient and trace metal inventories and upper ocean light environment. Using a fully coupled, global carbon-climate model (Climate System Model 1.4-carbon), we quantify anthropogenic climate change relative to the background natural interannual variability for the Southern Ocean over the period 2000 and 2100. Model results are interpreted using our understanding of the environmental control of phytoplankton growth rates – leading to two major findings. Firstly, comparison with results from phytoplankton perturbation experiments, in which environmental properties have been altered for key species (e.g., bloom formers), indicates that the predicted rates of change in oceanic properties over the next few decades are too subtle to be represented experimentally at present. Secondly, the rate of secular climate change will not exceed background natural variability, on seasonal to interannual time-scales, for at least several decades – which may not provide the prevailing conditions of change, i.e. constancy, needed for phytoplankton adaptation. Taken together, the relatively subtle environmental changes, due to climate change, may result in adaptation by resident phytoplankton, but not for several decades due to the confounding effects of climate variability. This presents major challenges for the detection and attribution of climate change effects on Southern Ocean phytoplankton. We advocate the development of multi-faceted tests/metrics that will reflect the relative plasticity of different phytoplankton functional groups and/or species to respond to changing ocean conditions. Article in Journal/Newspaper Southern Ocean Directory of Open Access Journals: DOAJ Articles Southern Ocean |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 P. W. Boyd S. C. Doney R. Strzepek J. Dusenberry K. Lindsay I. Fung Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Concurrent changes in ocean chemical and physical properties influence phytoplankton dynamics via alterations in carbonate chemistry, nutrient and trace metal inventories and upper ocean light environment. Using a fully coupled, global carbon-climate model (Climate System Model 1.4-carbon), we quantify anthropogenic climate change relative to the background natural interannual variability for the Southern Ocean over the period 2000 and 2100. Model results are interpreted using our understanding of the environmental control of phytoplankton growth rates – leading to two major findings. Firstly, comparison with results from phytoplankton perturbation experiments, in which environmental properties have been altered for key species (e.g., bloom formers), indicates that the predicted rates of change in oceanic properties over the next few decades are too subtle to be represented experimentally at present. Secondly, the rate of secular climate change will not exceed background natural variability, on seasonal to interannual time-scales, for at least several decades – which may not provide the prevailing conditions of change, i.e. constancy, needed for phytoplankton adaptation. Taken together, the relatively subtle environmental changes, due to climate change, may result in adaptation by resident phytoplankton, but not for several decades due to the confounding effects of climate variability. This presents major challenges for the detection and attribution of climate change effects on Southern Ocean phytoplankton. We advocate the development of multi-faceted tests/metrics that will reflect the relative plasticity of different phytoplankton functional groups and/or species to respond to changing ocean conditions. |
format |
Article in Journal/Newspaper |
author |
P. W. Boyd S. C. Doney R. Strzepek J. Dusenberry K. Lindsay I. Fung |
author_facet |
P. W. Boyd S. C. Doney R. Strzepek J. Dusenberry K. Lindsay I. Fung |
author_sort |
P. W. Boyd |
title |
Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response |
title_short |
Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response |
title_full |
Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response |
title_fullStr |
Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response |
title_full_unstemmed |
Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response |
title_sort |
climate-mediated changes to mixed-layer properties in the southern ocean: assessing the phytoplankton response |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doaj.org/article/eade2ca8c739461b9d9016472f3eeff1 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Biogeosciences, Vol 5, Iss 3, Pp 847-864 (2008) |
op_relation |
http://www.biogeosciences.net/5/847/2008/bg-5-847-2008.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/eade2ca8c739461b9d9016472f3eeff1 |
_version_ |
1766205848332271616 |