Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response
International audience 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 Mode...
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ftccsdartic:oai:HAL:hal-00297699v1 2023-11-12T04:26:36+01:00 Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response Boyd, P. W. Doney, S. C. Strzepek, R. Dusenberry, J. Lindsay, K. Fung, I. NIWA Centre for Chemical and Physical Oceanography Dept. of Chemistry Department of Marine Chemistry and Geochemistry (WHOI) Woods Hole Oceanographic Institution (WHOI) Department of Chemistry Climate and Global Dynamics Division Boulder (CGD) National Center for Atmospheric Research Boulder (NCAR) Department of Earth and Planetary Science UC Berkeley (EPS) University of California Berkeley (UC Berkeley) University of California (UC)-University of California (UC) 2008-05-19 https://hal.science/hal-00297699 https://hal.science/hal-00297699/document https://hal.science/hal-00297699/file/bg-5-847-2008.pdf en eng HAL CCSD European Geosciences Union hal-00297699 https://hal.science/hal-00297699 https://hal.science/hal-00297699/document https://hal.science/hal-00297699/file/bg-5-847-2008.pdf info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-00297699 Biogeosciences, 2008, 5 (3), pp.847-864 [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2023-10-21T23:15:52Z International audience 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Southern Ocean |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Boyd, P. W. Doney, S. C. Strzepek, R. Dusenberry, J. Lindsay, K. Fung, I. Climate-mediated changes to mixed-layer properties in the Southern Ocean: assessing the phytoplankton response |
topic_facet |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience 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. |
author2 |
NIWA Centre for Chemical and Physical Oceanography Dept. of Chemistry Department of Marine Chemistry and Geochemistry (WHOI) Woods Hole Oceanographic Institution (WHOI) Department of Chemistry Climate and Global Dynamics Division Boulder (CGD) National Center for Atmospheric Research Boulder (NCAR) Department of Earth and Planetary Science UC Berkeley (EPS) University of California Berkeley (UC Berkeley) University of California (UC)-University of California (UC) |
format |
Article in Journal/Newspaper |
author |
Boyd, P. W. Doney, S. C. Strzepek, R. Dusenberry, J. Lindsay, K. Fung, I. |
author_facet |
Boyd, P. W. Doney, S. C. Strzepek, R. Dusenberry, J. Lindsay, K. Fung, I. |
author_sort |
Boyd, P. W. |
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 |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00297699 https://hal.science/hal-00297699/document https://hal.science/hal-00297699/file/bg-5-847-2008.pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-00297699 Biogeosciences, 2008, 5 (3), pp.847-864 |
op_relation |
hal-00297699 https://hal.science/hal-00297699 https://hal.science/hal-00297699/document https://hal.science/hal-00297699/file/bg-5-847-2008.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782340517704499200 |