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Author |
Boyce, P.N.; McLoughlin, P.D. |
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Title |
Ecological Interactions Involving Feral Horses and Predators: Review with Implications for Biodiversity Conservation |
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Journal Article |
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Year |
2021 |
Publication |
The Journal of Wildlife Management |
Abbreviated Journal |
Jour. Wild. Mgmt. |
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n/a |
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n/a |
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Keywords |
apparent competition; artificial selection; community ecology; conservation; feral horse (Equus ferus caballus); life history; predator-prey dynamics |
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Abstract |
ABSTRACT For many ecosystems, feral horses are increasingly becoming an important if not dominant component of ungulate biomass and hence influence on community dynamics. Yet we still know little of how horses contribute to key ecological interactions including predator-prey and indirect competitive relationships at a community level. Notably, feral species like horses can exhibit life-history traits that differ from that of native (mainly artiodactyl) herbivore competitors. Artificial selection for traits like increased, early, or extended reproduction that have yet to be reversed by natural selection, coupled with naturally selected differences in anatomy and behavior, in addition to unique management objectives for horses compared to other species, means that the dynamics of feral horse populations are not likely to align with what might be expected of other large herbivores. Unexpected population dynamics and inherent biological asymmetries between native ungulates and feral horses may therefore influence the former via direct competition for shared resources and through enemy-mediated interactions like apparent competition. In several localities feral horses now co-exist with multiple native prey species, some of which are in decline or are species at risk. Compounding risks to native species from direct or indirect competitive exclusion by horses is the unique nature and socio-political context of feral horse management, which tends towards allowing horse populations to be limited largely by natural, density-dependent factors. We summarize the inherent asymmetries between feral horse biology and that of other ungulate prey species with consequences for conservation, focusing on predator-prey and emerging indirect interactions in multi-prey systems, and highlight future directions to address key knowledge gaps in our understanding of how feral horses may now be contributing to the (re)structuring of food webs. Observations of patterns of rapid growth and decline, and associated skews in sex ratios of feral horse populations, indicate a heightened potential for indirect interactions among large ungulate prey species, where there is a prevalence of feral horses as preferred prey, particularly where native prey are declining. In places like western North America, we expect predator-prey interactions involving feral horses to become an increasingly important factor in the conservation of wildlife. This applies not only to economically or culturally important game species but also at-risk species, both predators (e.g., wolves [Canis lupus], grizzly bears [Ursus arctos]) and prey (e.g., woodland caribou [Rangifer tarandus caribou]), necessitating an ecological understanding of the role of horses in natural environments that goes beyond that of population control. ? 2021 The Wildlife Society. |
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John Wiley & Sons, Ltd |
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0022-541x |
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https://doi.org/10.1002/jwmg.21995 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
6642 |
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Author |
Krueger, K.; Farmer, K.; Heinze, J. |
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Title |
The effects of age, rank and neophobia on social learning in horses |
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Journal Article |
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Year |
2014 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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17 |
Issue |
3 |
Pages |
645-655 |
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Keywords |
Horse; Social learning; Sociality; Ecology; Social relationships |
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Social learning is said to meet the demands of complex environments in which individuals compete over resources and co-operate to share resources. Horses (Equus caballus) were thought to lack social learning skills because they feed on homogenously distributed resources with few reasons for conflict. However, the horse’s social environment is complex, which raises the possibility that its capacity for social transfer of feeding behaviour has been underestimated. We conducted a social learning experiment using 30 socially kept horses of different ages. Five horses, one from each group, were chosen as demonstrators, and the remaining 25 horses were designated observers. Observers from each group were allowed to watch their group demonstrator opening a feeding apparatus. We found that young, low ranking, and more exploratory horses learned by observing older members of their own group, and the older the horse, the more slowly it appeared to learn. Social learning may be an adaptive specialisation to the social environment. Older animals may avoid the potential costs of acquiring complex and potentially disadvantageous feeding behaviours from younger group members. We argue that horses show social learning in the context of their social ecology, and that research procedures must take such contexts into account. Misconceptions about the horse’s sociality may have hampered earlier studies. |
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Springer Berlin Heidelberg |
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English |
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1435-9448 |
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Equine Behaviour @ team @ |
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5737 |
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Author |
Berger, J |
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Title |
Wild horses of the Great Basin |
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Year |
1986 |
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University of Chicago Press, |
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Univ. of Chic. Press |
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wildlife equine behaviour ecology |
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Describes the behavior of wild horses living in the Great Basin Desert of Nevada and discusses the role of the horses in the area's ecology |
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University of Chicago Press |
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Chicago |
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0-226-04367-3 |
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refbase @ user @ |
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659 |
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Author |
Berger, J. |
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Title |
Wild Horses of the Great Basin: Social Competition and Population Size |
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Book Whole |
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1986 |
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Wildlife Behavior Ecology |
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Editorial Reviews
From Library Journal
Berger begins this scholarly and absorbing treatise by discussing the natural history of the horse in general. Then, on the basis of several years of field work, he describes and details the behavior and ecology of the wild horses in the Great Basin Desert of Nevada. The purpose of the book is not, however, merely to describe natural history, but also to test quantitatively several basic ecological hypotheses. Berger has done both well, and his book will be a major source of information on North American wild horses for years to come. The book will interest specialists and graduate students primarily. It may also appeal to anyone with a strong interest in wild horses, and the remote and starkly beautiful Great Basin. Nicholas J. Volkman, Point Reyes Bird Observatory, Stinson Beach, Cal.
Copyright 1986 Reed Business Information, Inc. |
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University of Chicago Press |
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Chicago |
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Englisch |
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978-0226043678 |
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Equine Behaviour @ team @ |
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2173 |
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Author |
Krueger, K. (ed) |
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Title |
Proceedings of the International Equine Science Meeting 2008 |
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Conference Volume |
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2008 |
Publication |
IESM 2008 |
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Equine Ecology; Equine Sociality; Equine Learning; Equine Cognition; Equine Welfare |
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Target group: Biologists, Psychologists, Veterinarians and Professionals
Meeting target: Because the last international meeting on Equine Science took place a couple years ago, there is an urgent need for equine scientists to exchange scientific knowledge, coordinate research provide knowledge for practical application, and discus research results among themselves and with professionals who work with horses. Additionally, dialog concerning the coordination of the study “Equitation Science” in Europe is urgently needed. Coordination and cooperation shall arise from the meeting, enrich the research, and advance the application of scientific knowledge for the horses` welfare. |
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Xenophon Verlag |
Place of Publication |
Wald |
Editor |
Krueger, K. |
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English |
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978-3-9808134-0-2 |
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no |
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Equine Behaviour @ team @ |
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4508 |
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