| Registro completo |
| Provedor de dados: |
ArchiMer
|
| País: |
France
|
| Título: |
Exposure to solar radiation drives organismal vulnerability to climate: evidence from an intertidal limpet
|
| Autores: |
Chapperon, Coraline
Volkenborn, Nils
Clavier, Jacques
Seite, Sarah
Seabra, Rui
Lima, Fernando P.
|
| Data: |
2016-04
|
| Ano: |
2016
|
| Palavras-chave: |
Patella vulgata
Heat stress
Acclimatization
Thermal tolerance
Microhabitat
Intertidal
|
| Resumo: |
Understanding the physiological abilities of organisms to cope with heat stress is critical for predictions of species’ distributions in response to climate change. We investigated physiological responses (respiration and heart beat rate) of the ectotherm limpet Patella vulgata to heat stress events during emersion and the role of seasonal and microclimatic acclimatization for individual thermal tolerance limits. Individuals were collected from 5 microhabitats characterized by different exposure to solar radiation in the high intertidal zone of a semi-exposed rocky shore in winter and summer of 2014. Upper thermal tolerance limits (heat coma temperatures - HCTs, and heart rate Arrhenius break temperatures - ABTs) were determined for individuals from each microhabitat in both seasons under laboratory conditions. While we found a clear seasonal acclimatization, i.e., higher HCTs and ABTs in summer than in winter, we did not find evidence for microhabitat-specific responses that would suggest microclimatic acclimatization. However, operative limpet temperatures derived from in-situ temperature measurements suggest that individuals from sun exposed microhabitats have a much narrower thermal safety margins than those from less exposed surfaces or within crevices. Microhabitat specific thermal safety margins caused by high thermal heterogeneity at small spatial scales and the lack of short term acclimatization will likely shape small scale distribution patterns of intertidal species in response to the predicted increase in the frequency and intensity of heat waves.
|
| Tipo: |
Text
|
| Idioma: |
Inglês
|
| Identificador: |
https://archimer.ifremer.fr/doc/00318/42939/42447.pdf
DOI:10.1016/j.jtherbio.2016.03.002
https://archimer.ifremer.fr/doc/00318/42939/
|
| Editor: |
Pergamon-elsevier Science Ltd
|
| Formato: |
application/pdf
|
| Fonte: |
Journal Of Thermal Biology (0306-4565) (Pergamon-elsevier Science Ltd), 2016-04 , Vol. 57 , P. 92-100
|
| Direitos: |
2016 Elsevier Ltd. All rights reserved.
info:eu-repo/semantics/openAccess
restricted use
|
