期刊
ECOLOGY LETTERS
卷 24, 期 8, 页码 1556-1568出版社
WILEY
DOI: 10.1111/ele.13750
关键词
accelerometer; activity budget; altitudinal migration; Alpine ibex; behavioural responses; Capra ibex; climate change; foraging; GPS telemetry; thermoregulation
类别
资金
- Italian Ministry of Education
- Italian Ministry of the Environment
- University of Padova [CPDA094513/09, 60A08-2154/14, 60A08-2017/15]
The study found that under climate warming, female Alpine ibex are more likely to experience thermal stress during the reproductive season, but they compensate by adjusting their behavior and habitat selection to adapt to the impact of climate change on their habitat.
Alpine large herbivores have developed physiological and behavioural mechanisms to cope with fluctuations in climate and resource availability that may become maladaptive under climate warming. We tested this hypothesis in female Alpine ibex (Capra ibex) by modelling annual and daily movement and activity patterns in relation to temperature, vegetation productivity and reproductive status based on bio-logging data and climate change projections. In summer, ibex moved upslope, tracking the green wave. Ibex decreased diel activity sharply above a threshold temperature of 13-14 degrees C, indicating thermal stress, but compensated behaviourally by foraging both earlier and later in the day, and by moving further upslope than on cooler days, especially reproductive females. This critical temperature will be exceeded three times as often under climate change projections. Under such scenarios, the altitudinal extent of the area will limit the available habitat providing thermal shelter, potentially impacting performance and population distribution of this emblematic mountain ungulate.
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