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| Author | Berger, J.; Cunningham, C. | ||||
| Title | Size-Related Effects on Search Times in North American Grassland Female Ungulates | Type | Journal Article | ||
| Year | 1988 | Publication | Ecology | Abbreviated Journal | |
| Volume | 69 | Issue | 1 | Pages | 177-183 |
| Keywords | no keywords available | ||||
| Abstract | Feeding and searching (= vigilance) rates arise as a result of many interrelated factors including trophic level, diet, reproductive condition, sex, habitat, body mass, and potential predation pressure. Because of unique ecological conditions in which the confounding influences of all but two of these variables could be minimized, we examined the hypothesis that body mass alone accounts for interspecific differences in search times, and tested it with females of four sympatric native North American ungulates (Bison bison, Antilocapra americana, Ovis canadensis, and Odocoileus hemionus). When the effects of group size were controlled, smaller bodied species were more vigilant (per unit body mass) than larger ones. However, search times (ST) also scaled to body mass, and between 81 and 97% of the ST variance was explained by either exponential or power functions. To remove the potential bias that predators exert different influences on species of varying size, search times of bison in areas with and without their major predator, wolves (Canis lupus), were contrasted; search times did not differ between sites. Our results highlight the importance of designing field research that controls for confounding variables prior to attempting to scale behavioral processes to ecological events. See full-text article at JSTOR | ||||
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Ecological Society of America | Place of Publication | Editor | ||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0012-9658 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 2233 | ||
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| Author | Berger, J | ||||
| Title | Wild horses of the Great Basin | Type | Book Whole | ||
| Year | 1986 | Publication | University of Chicago Press, | Abbreviated Journal | Univ. of Chic. Press |
| Volume | Issue | Pages | |||
| Keywords | wildlife equine behaviour ecology | ||||
| Abstract | 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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| Publisher |
University of Chicago Press | Place of Publication | Chicago | Editor | |
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | 0-226-04367-3 | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 659 | ||
| Permanent link to this record | |||||
| Author | Berger, J. | ||||
| Title | Wild Horses of the Great Basin: Social Competition and Population Size | Type | Book Whole | ||
| Year | 1986 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
| Keywords | Wildlife Behavior Ecology | ||||
| Abstract | 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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| Publisher |
University of Chicago Press | Place of Publication | Chicago | Editor | |
| Language | Englisch | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | 978-0226043678 | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 2173 | ||
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