Plastic adaptations of foraging strategies to variation in forage quality in Alpine chamois

作者: Arno Puorger , Christian Rossi , Rudolf M. Haller , Pia Anderwald

DOI: 10.1139/CJZ-2017-0073

关键词: ForageForagingVegetationEcologyBiologyPlant coverRupicapraFood qualityAir temperatureAnimal science

摘要: Foraging efficiency strongly affects individual fitness and is influenced by diverse factors such as food quality quantity, well intra- inter-specific interactions. We investigated whether Alpine chamois (Rupicapra rupicapra (Linnaeus, 1758)) in a protected area the Swiss Alps adapted their foraging behaviour to forage availability modeling bite step rates of individuals on vegetation nitrogen content, relative plant cover, sex, daytime, air temperature, slope. Vegetation characteristics were derived using remote sensing data from airborne imaging spectroscopy sets feeding locations determined theodolite. Chamois increased with decreasing slope, increasing temperature. Step higher at high temperatures decreased cover. Males showed lower than females. Daytime had no influence either or rates. An incr...

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