Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses
Physiological thermal limits of organisms are linked to their geographic distribution. The assessment of such limits can provide valuable insights when monitoring for environmental thermal alterations. Using the dynamic critical thermal method (CTM), we assessed the upper (CTmax) and lower (CTmin) t...
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2020
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ftnerc:oai:nora.nerc.ac.uk:526103 2023-05-15T13:41:44+02:00 Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses Rendoll Cárcamo, Javier Contador, Tamara Convey, Peter Kennedy, James 2020-02-04 text http://nora.nerc.ac.uk/id/eprint/526103/ https://nora.nerc.ac.uk/id/eprint/526103/1/insects-11-00102.pdf https://www.mdpi.com/2075-4450/11/2/102 en eng MDPI AG https://nora.nerc.ac.uk/id/eprint/526103/1/insects-11-00102.pdf Rendoll Cárcamo, Javier; Contador, Tamara; Convey, Peter orcid:0000-0001-8497-9903 Kennedy, James. 2020 Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses. Insects, 11 (2), 102. https://doi.org/10.3390/insects11020102 <https://doi.org/10.3390/insects11020102> cc_by_4 CC-BY Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.3390/insects11020102 2023-02-04T19:49:47Z Physiological thermal limits of organisms are linked to their geographic distribution. The assessment of such limits can provide valuable insights when monitoring for environmental thermal alterations. Using the dynamic critical thermal method (CTM), we assessed the upper (CTmax) and lower (CTmin) thermal limits of three freshwater macroinvertebrate taxa with restricted low elevation distribution (20 m a.s.l.) and three taxa restricted to upper elevations (480 and 700 m a.s.l.) in the Magellanic sub-Antarctic ecoregion of southern Chile. In general terms, macroinvertebrates restricted to lower altitudinal ranges possess a broader thermal tolerance than those restricted to higher elevations. Upper and lower thermal limits are significantly different between taxa throughout the altitudinal gradient. Data presented here suggest that freshwater macroinvertebrates restricted to upper altitudinal ranges may be useful indicators of thermal alteration in their habitats, due to their relatively low tolerance to increasing temperatures and the ease with which behavioral responses can be detected. Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic Insects 11 2 102 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
Physiological thermal limits of organisms are linked to their geographic distribution. The assessment of such limits can provide valuable insights when monitoring for environmental thermal alterations. Using the dynamic critical thermal method (CTM), we assessed the upper (CTmax) and lower (CTmin) thermal limits of three freshwater macroinvertebrate taxa with restricted low elevation distribution (20 m a.s.l.) and three taxa restricted to upper elevations (480 and 700 m a.s.l.) in the Magellanic sub-Antarctic ecoregion of southern Chile. In general terms, macroinvertebrates restricted to lower altitudinal ranges possess a broader thermal tolerance than those restricted to higher elevations. Upper and lower thermal limits are significantly different between taxa throughout the altitudinal gradient. Data presented here suggest that freshwater macroinvertebrates restricted to upper altitudinal ranges may be useful indicators of thermal alteration in their habitats, due to their relatively low tolerance to increasing temperatures and the ease with which behavioral responses can be detected. |
format |
Article in Journal/Newspaper |
author |
Rendoll Cárcamo, Javier Contador, Tamara Convey, Peter Kennedy, James |
spellingShingle |
Rendoll Cárcamo, Javier Contador, Tamara Convey, Peter Kennedy, James Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses |
author_facet |
Rendoll Cárcamo, Javier Contador, Tamara Convey, Peter Kennedy, James |
author_sort |
Rendoll Cárcamo, Javier |
title |
Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses |
title_short |
Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses |
title_full |
Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses |
title_fullStr |
Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses |
title_full_unstemmed |
Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses |
title_sort |
sub-antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses |
publisher |
MDPI AG |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/526103/ https://nora.nerc.ac.uk/id/eprint/526103/1/insects-11-00102.pdf https://www.mdpi.com/2075-4450/11/2/102 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/526103/1/insects-11-00102.pdf Rendoll Cárcamo, Javier; Contador, Tamara; Convey, Peter orcid:0000-0001-8497-9903 Kennedy, James. 2020 Sub-Antarctic freshwater invertebrate thermal tolerances: an assessment of critical thermal limits and behavioral responses. Insects, 11 (2), 102. https://doi.org/10.3390/insects11020102 <https://doi.org/10.3390/insects11020102> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/insects11020102 |
container_title |
Insects |
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11 |
container_issue |
2 |
container_start_page |
102 |
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1766156299593056256 |