The effects of changing climate on faunal depth distributions determine winners and losers
Changing climate is predicted to impact all depths of the global oceans, yet projections of range shifts in marine faunal distributions in response to changing climate seldom evaluate potential shifts in depth distribution. Marine ectotherms’ thermal tolerance is limited by their ability to maintain...
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Online Access: | https://eprints.soton.ac.uk/366590/ https://eprints.soton.ac.uk/366590/1/Brown%2526Thatje_GCB_15.pdf |
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ftsouthampton:oai:eprints.soton.ac.uk:366590 2023-07-30T04:01:56+02:00 The effects of changing climate on faunal depth distributions determine winners and losers Brown, Alastair Thatje, Sven 2015-01 text https://eprints.soton.ac.uk/366590/ https://eprints.soton.ac.uk/366590/1/Brown%2526Thatje_GCB_15.pdf en English eng https://eprints.soton.ac.uk/366590/1/Brown%2526Thatje_GCB_15.pdf Brown, Alastair and Thatje, Sven (2015) The effects of changing climate on faunal depth distributions determine winners and losers. Global Change Biology, 21 (1), 173-180. (doi:10.1111/gcb.12680 <http://dx.doi.org/10.1111/gcb.12680>). cc_by_4 Article PeerReviewed 2015 ftsouthampton https://doi.org/10.1111/gcb.12680 2023-07-09T21:53:49Z Changing climate is predicted to impact all depths of the global oceans, yet projections of range shifts in marine faunal distributions in response to changing climate seldom evaluate potential shifts in depth distribution. Marine ectotherms’ thermal tolerance is limited by their ability to maintain aerobic metabolism (oxygen- and capacity-limited tolerance), and is functionally associated with their hypoxia tolerance. Shallow-water (<200 m depth) marine invertebrates and fishes demonstrate limited tolerance of increasing hydrostatic pressure (pressure exerted by the overlying mass of water), and hyperbaric (increased pressure) tolerance is proposed to depend on the ability to maintain aerobic metabolism, too. Here, we report significant correlation between the hypoxia thresholds and the hyperbaric thresholds of taxonomic groups of shallow-water fauna, suggesting that pressure tolerance is indeed oxygen-limited. Consequently, it appears that the combined effects of temperature, pressure, and oxygen concentration constrain the fundamental ecological niches (FENs) of marine invertebrates and fishes. Including depth in a conceptual model of oxygen- and capacity-limited FENs’ responses to ocean warming and deoxygenation confirms previous predictions made based solely on consideration of the latitudinal effects of ocean warming (e.g. Cheung et al., 2009), that polar taxa are most vulnerable to the effects of climate change, with Arctic fauna experiencing the greatest FEN contraction. In contrast, the inclusion of depth in the conceptual model reveals for the first time that temperate fauna as well as tropical fauna may experience substantial FEN expansion with ocean warming and deoxygenation, rather than FEN maintenance or contraction suggested by solely considering latitudinal range shifts. Article in Journal/Newspaper Arctic Climate change University of Southampton: e-Prints Soton Arctic Global Change Biology 21 1 173 180 |
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University of Southampton: e-Prints Soton |
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English |
description |
Changing climate is predicted to impact all depths of the global oceans, yet projections of range shifts in marine faunal distributions in response to changing climate seldom evaluate potential shifts in depth distribution. Marine ectotherms’ thermal tolerance is limited by their ability to maintain aerobic metabolism (oxygen- and capacity-limited tolerance), and is functionally associated with their hypoxia tolerance. Shallow-water (<200 m depth) marine invertebrates and fishes demonstrate limited tolerance of increasing hydrostatic pressure (pressure exerted by the overlying mass of water), and hyperbaric (increased pressure) tolerance is proposed to depend on the ability to maintain aerobic metabolism, too. Here, we report significant correlation between the hypoxia thresholds and the hyperbaric thresholds of taxonomic groups of shallow-water fauna, suggesting that pressure tolerance is indeed oxygen-limited. Consequently, it appears that the combined effects of temperature, pressure, and oxygen concentration constrain the fundamental ecological niches (FENs) of marine invertebrates and fishes. Including depth in a conceptual model of oxygen- and capacity-limited FENs’ responses to ocean warming and deoxygenation confirms previous predictions made based solely on consideration of the latitudinal effects of ocean warming (e.g. Cheung et al., 2009), that polar taxa are most vulnerable to the effects of climate change, with Arctic fauna experiencing the greatest FEN contraction. In contrast, the inclusion of depth in the conceptual model reveals for the first time that temperate fauna as well as tropical fauna may experience substantial FEN expansion with ocean warming and deoxygenation, rather than FEN maintenance or contraction suggested by solely considering latitudinal range shifts. |
format |
Article in Journal/Newspaper |
author |
Brown, Alastair Thatje, Sven |
spellingShingle |
Brown, Alastair Thatje, Sven The effects of changing climate on faunal depth distributions determine winners and losers |
author_facet |
Brown, Alastair Thatje, Sven |
author_sort |
Brown, Alastair |
title |
The effects of changing climate on faunal depth distributions determine winners and losers |
title_short |
The effects of changing climate on faunal depth distributions determine winners and losers |
title_full |
The effects of changing climate on faunal depth distributions determine winners and losers |
title_fullStr |
The effects of changing climate on faunal depth distributions determine winners and losers |
title_full_unstemmed |
The effects of changing climate on faunal depth distributions determine winners and losers |
title_sort |
effects of changing climate on faunal depth distributions determine winners and losers |
publishDate |
2015 |
url |
https://eprints.soton.ac.uk/366590/ https://eprints.soton.ac.uk/366590/1/Brown%2526Thatje_GCB_15.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_relation |
https://eprints.soton.ac.uk/366590/1/Brown%2526Thatje_GCB_15.pdf Brown, Alastair and Thatje, Sven (2015) The effects of changing climate on faunal depth distributions determine winners and losers. Global Change Biology, 21 (1), 173-180. (doi:10.1111/gcb.12680 <http://dx.doi.org/10.1111/gcb.12680>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1111/gcb.12680 |
container_title |
Global Change Biology |
container_volume |
21 |
container_issue |
1 |
container_start_page |
173 |
op_container_end_page |
180 |
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1772812682304421888 |