Supplementary material from "Seeking temporal refugia to heat stress: increasing nocturnal activity despite predation risk" ...

• Main Authors: Brivio, Francesca, Apollonio, Marco, Anderwald, Pia, Filli, Flurin, Bassano, Bruno, Bertolucci, Cristiano, Grignolio, Stefano
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: The Royal Society 2023
• Subjects: Ecology not elsewhere classified; Animal behaviour; Canis lupus
• Online Access: https://dx.doi.org/10.6084/m9.figshare.c.6992012; https://rs.figshare.com/collections/Supplementary_material_from_Seeking_temporal_refugia_to_heat_stress_increasing_nocturnal_activity_despite_predation_risk_/6992012

Flexibility in activity timing may enable organisms to quickly adapt to environmental changes. Under global warming, diurnally adapted endotherms may achieve a better energy balance by shifting their activity towards cooler nocturnal hours. However, this shift may expose animals to new or increased environmental challenges (e.g. increased predation risk, reduced foraging efficiency). We analysed a large dataset of activity data from 47 ibex ( Capra ibex ) in two protected areas, characterized by varying levels of predation risk (presence versus absence of the wolf— Canis lupus ). We found that ibex increased nocturnal activity following warmer days and during brighter nights. Despite the considerable sexual dimorphism typical of this species and the consequent different predation-risk perception, males and females demonstrated consistent responses to heat in both predator-present and predator-absent areas. This supports the hypothesis that shifting activity towards nighttime may be a common strategy adopted ...