Dépôt numérique
RECHERCHER

Climate change and resilience of tributary thermal refugia for salmonids in eastern Canadian rivers / Le changement climatique et la résilience des refuges thermiques fluviaux pour les salmonidés dans les rivières de l’Est canadien.

Daigle, Anik; Jeong, Dae Il; Lapointe, Michel (2015). Climate change and resilience of tributary thermal refugia for salmonids in eastern Canadian rivers / Le changement climatique et la résilience des refuges thermiques fluviaux pour les salmonidés dans les rivières de l’Est canadien. Hydrological Sciences Journal , vol. 60 , nº 6. p. 1044-1063. DOI: 10.1080/02626667.2014.898121.

Ce document n'est pas hébergé sur EspaceINRS.

Résumé

River water temperature regimes are expected to change along with climate over the next decades. This work focuses on three important salmon rivers of eastern Canada, two of which warm up most summers to temperatures higher than the Atlantic salmon lethal limit (>28°C). Water temperature was monitored at 53 sites on the three basins during 2–18 summers, with about half of these sites either known or potential thermal refugia for salmon. Site-specific statistical models predicting water temperature, based on 10 different climate scenarios, were developed in order to assess how many of these sites will remain cool enough to serve as refugia in the future (2046–2065). The results indicate that, while 19 of the 23 identified refugia will persist, important increases in the occurrence and duration of temperature events in excess of 24°C and 28°C, respectively, in the mainstems of the rivers, will lead to higher demands for thermal refugia in the salmonid populations.

Type de document: Article
Mots-clés libres: Atlantic salmon; climate change; modelling; thermal refugia; water temperature
Centre: Centre Eau Terre Environnement
Date de dépôt: 27 avr. 2018 19:12
Dernière modification: 27 avr. 2018 19:12
URI: http://espace.inrs.ca/id/eprint/4303

Actions (Identification requise)

Modifier la notice Modifier la notice