Upper thermal limits and risk of mortality of coastal Antarctic ectotherms

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dc.contributor.authorCarter, Mauricio J.
dc.contributor.authorGarcia-Huidobro, M. Roberto
dc.contributor.authorAldana, Marcela
dc.contributor.authorRezende, Enrico L.
dc.contributor.authorBozinovic, Francisco
dc.contributor.authorGalban-Malagon, Cristobal
dc.contributor.authorPulgar, Jose M.
dc.date.accessioned2025-01-20T20:18:21Z
dc.date.available2025-01-20T20:18:21Z
dc.date.issued2023
dc.description.abstractAntarctic marine animals face one of the most extreme thermal environments, characterized by a stable and narrow range of low seawater temperatures. At the same time, the Antarctic marine ecosystems are threatened by accelerated global warming. Determining the upper thermal limits (CTmax) is crucial to project the persistence and distribution areas of the Antarctic marine species. Using thermal death time curves (TDT), we estimated CTmax at different temporal scales from 1 minute to daily and seasonal, the predict vulnerability to the current thermal variation and two potential heatwave scenarios. Our results revealed that CTmax at 1 min are far from the temperature present in the marine intertidal area where our study species, showing Echinoderm species higher CTmax than the Chordata and Arthropods species. Simulations indicated that seasonal thermal variation from the intertidal zone contributed to basal mortality, which increased after considering moderate scenarios of heatwaves (+2 degrees C) in the Shetland Archipelago intertidal zone. Our finding highlighted the relevance of including exposure time explicitly on the CTmax estimates, which deliver closer and more realistic parameters according to the species that may be experiencing in the field.
dc.fuente.origenWOS
dc.identifier.doi10.3389/fmars.2022.1108330
dc.identifier.eissn2296-7745
dc.identifier.urihttps://doi.org/10.3389/fmars.2022.1108330
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92456
dc.identifier.wosidWOS:000920885700001
dc.language.isoen
dc.revistaFrontiers in marine science
dc.rightsacceso restringido
dc.subjectupper thermal limits
dc.subjectheatwave
dc.subjectAntarctic peninsula
dc.subjectmarine ectotherms
dc.subjecttemperature mortality
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleUpper thermal limits and risk of mortality of coastal Antarctic ectotherms
dc.typeartículo
dc.volumen9
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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