Human activities increase vigilance, movement and home range size of the endangered mountain nyala <i>(Tragelaphus buxtoni)</i> at the cost of foraging and resting

Worku, Ejigu Alemayehu, Atickem, Anagaw, Bro-Jorgensen, Jakob ORCID: 0000-0003-2899-8477, Bekele, Afework, Evangelista, Paul and Stenseth, Nils Chr (2021) Human activities increase vigilance, movement and home range size of the endangered mountain nyala <i>(Tragelaphus buxtoni)</i> at the cost of foraging and resting. GLOBAL ECOLOGY AND CONSERVATION, 32. e01900-e01900.

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Abstract

Behavioral responses in wildlife due to human activities may often go unnoticed but have significant effects on population viability. This is a particular concern with endangered species characterized by small population sizes. From June 2016 to May 2017, we measured the effects of human activities on daily the activity budget and home range size of mountain nyala (Tragelaphus buxtoni), an endemic antelope of the Ethiopian highlands. We tracked two groups of mountain nyala from two study sites that differ in the level of human activities; Adaba-Dodola Community Conservation Area (Adaba-Dodola CCA) and Arsi Mountains National Park (Arsi Mountains NP). Our results showed that the time spent on vigilance and movement was dramatically higher in Adaba-Dodola Community CCA, where human presence is significant, than in Arsi Mountains NP, whereas the opposite was true for time spent foraging and resting. In addition, mean home range size (95% KDE) was significantly larger for the Adaba-Dodola CCA group (13 ± 7.4 km2) than for the Arsi Mountains NP group (6.3 ± 2.7 km2) covering larger areas during the dry season (18.7 ± 6.9 km2) than the wet season (4.9 ± 1.0 km2). The finding that increased investment in vigilance and movement trade-off against the restorative behaviors of foraging and resting in human-disturbed areas have implications for conservation managements; specifically, it underscores the need to (i) establish the fitness consequences of behavioral changes, and (ii) monitoring behavioral change in the disturbed population with the aim of bringing it closer to the undisturbed baseline. The study highlights the importance of protected areas, limiting human activities and monitoring the behavioral change of endangered species in human-disturbed areas.

Item Type:	Article
Uncontrolled Keywords:	Activity budget, Home range, Human activities, Mountain nyala, Restorative behaviors, Vigilance
Divisions:	Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Infection, Veterinary and Ecological Sciences
Depositing User:	Symplectic Admin
Date Deposited:	04 Nov 2021 08:03
Last Modified:	18 Oct 2023 13:46
DOI:	10.1016/j.gecco.2021.e01900
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3142673