Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming
Despite the potential of standing genetic variation to rescue communities and shape future adaptation to climate change, high levels of uncertainty are associated with intraspecific trait variation in marine phytoplankton. Recent model intercomparisons have pointed to an urgent need to reduce uncert...
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ftunivrhodeislan:oai:digitalcommons.uri.edu:gsofacpubs-3315 2024-02-11T10:08:48+01:00 Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming Bishop, Ian W. Anderson, Stephanie I. Collins, Sinead Rynearson, Tatiana A. 2022-10-01T07:00:00Z https://digitalcommons.uri.edu/gsofacpubs/2346 https://doi.org/10.1111/gcb.16329 unknown DigitalCommons@URI https://digitalcommons.uri.edu/gsofacpubs/2346 doi:10.1111/gcb.16329 https://doi.org/10.1111/gcb.16329 Graduate School of Oceanography Faculty Publications adaptive potential diatoms intraspecific diversity phytoplankton Southern Ocean thermal performance traits text 2022 ftunivrhodeislan https://doi.org/10.1111/gcb.16329 2024-01-22T19:09:52Z Despite the potential of standing genetic variation to rescue communities and shape future adaptation to climate change, high levels of uncertainty are associated with intraspecific trait variation in marine phytoplankton. Recent model intercomparisons have pointed to an urgent need to reduce uncertainty in the projected responses of marine ecosystems to climate change, including Southern Ocean (SO) surface waters, which are among the most rapidly warming habitats on Earth. Because SO phytoplankton growth responses to warming sea surface temperature (SST) are poorly constrained, we developed a high-throughput growth assay to simultaneously examine inter- and intra-specific thermal trait variation in a group of 43 taxonomically diverse and biogeochemically important SO phytoplankton called diatoms. We found significant differential growth performance among species across thermal traits, including optimum and maximum tolerated growth temperatures. Within species, coefficients of variation ranged from 3% to 48% among strains for those same key thermal traits. Using SO SST projections for 2100, we predicted biogeographic ranges that differed by up to 97% between the least and most tolerant strains for each species, illustrating the role that strain-specific differences in temperature response can play in shaping predictions of future phytoplankton biogeography. Our findings revealed the presence and scale of thermal trait variation in SO phytoplankton and suggest these communities may already harbour the thermal trait diversity required to withstand projected 21st-century SST change in the SO even under severe climate forcing scenarios. Text Southern Ocean University of Rhode Island: DigitalCommons@URI Southern Ocean Global Change Biology 28 19 5755 5767 |
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Open Polar |
collection |
University of Rhode Island: DigitalCommons@URI |
op_collection_id |
ftunivrhodeislan |
language |
unknown |
topic |
adaptive potential diatoms intraspecific diversity phytoplankton Southern Ocean thermal performance traits |
spellingShingle |
adaptive potential diatoms intraspecific diversity phytoplankton Southern Ocean thermal performance traits Bishop, Ian W. Anderson, Stephanie I. Collins, Sinead Rynearson, Tatiana A. Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming |
topic_facet |
adaptive potential diatoms intraspecific diversity phytoplankton Southern Ocean thermal performance traits |
description |
Despite the potential of standing genetic variation to rescue communities and shape future adaptation to climate change, high levels of uncertainty are associated with intraspecific trait variation in marine phytoplankton. Recent model intercomparisons have pointed to an urgent need to reduce uncertainty in the projected responses of marine ecosystems to climate change, including Southern Ocean (SO) surface waters, which are among the most rapidly warming habitats on Earth. Because SO phytoplankton growth responses to warming sea surface temperature (SST) are poorly constrained, we developed a high-throughput growth assay to simultaneously examine inter- and intra-specific thermal trait variation in a group of 43 taxonomically diverse and biogeochemically important SO phytoplankton called diatoms. We found significant differential growth performance among species across thermal traits, including optimum and maximum tolerated growth temperatures. Within species, coefficients of variation ranged from 3% to 48% among strains for those same key thermal traits. Using SO SST projections for 2100, we predicted biogeographic ranges that differed by up to 97% between the least and most tolerant strains for each species, illustrating the role that strain-specific differences in temperature response can play in shaping predictions of future phytoplankton biogeography. Our findings revealed the presence and scale of thermal trait variation in SO phytoplankton and suggest these communities may already harbour the thermal trait diversity required to withstand projected 21st-century SST change in the SO even under severe climate forcing scenarios. |
format |
Text |
author |
Bishop, Ian W. Anderson, Stephanie I. Collins, Sinead Rynearson, Tatiana A. |
author_facet |
Bishop, Ian W. Anderson, Stephanie I. Collins, Sinead Rynearson, Tatiana A. |
author_sort |
Bishop, Ian W. |
title |
Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming |
title_short |
Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming |
title_full |
Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming |
title_fullStr |
Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming |
title_full_unstemmed |
Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming |
title_sort |
thermal trait variation may buffer southern ocean phytoplankton from anthropogenic warming |
publisher |
DigitalCommons@URI |
publishDate |
2022 |
url |
https://digitalcommons.uri.edu/gsofacpubs/2346 https://doi.org/10.1111/gcb.16329 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Graduate School of Oceanography Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/gsofacpubs/2346 doi:10.1111/gcb.16329 https://doi.org/10.1111/gcb.16329 |
op_doi |
https://doi.org/10.1111/gcb.16329 |
container_title |
Global Change Biology |
container_volume |
28 |
container_issue |
19 |
container_start_page |
5755 |
op_container_end_page |
5767 |
_version_ |
1790608398679539712 |