Joint temporal trends in river thermal and hydrological conditions can threaten the downstream migration of the critically endangered European eel.

ABSTRACT: Climate change is modifying the hydrological and thermal regimes of rivers worldwide, threatening the triggering of organisms' key life-cycle processes. European eel (Anguilla anguilla) is a critically endangered fish species that migrates over several thousand kilometres between its rearing habitats in continental waters of Europe and North Africa and its spawning area in the Sargasso Sea. Downstream migration of adult eels occurs during periods of decreasing river water temperature associated with high discharge but changes in these environmental cues may affected eel migratory conditions. An innovative multivariate method was developed to analyse long-term datasets of daily water temperature, discharge and eel passage in two European rivers. Over the past 50 years, water temperature and

SUBMITTER: Arevalo E 

PROVIDER: S-EPMC8377086 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature