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Facts from a year of drought : forage competition between livestock and the Mongolian Pika (Ochotona pallasi) and its effects on livestock densities and body condition

Title data

Retzer, Vroni:
Facts from a year of drought : forage competition between livestock and the Mongolian Pika (Ochotona pallasi) and its effects on livestock densities and body condition.
In: Erforschung biologischer Ressourcen der Mongolei = Exploration into the biological resources of Mongolia. Vol. 9 (2005) . - pp. 147-161.
ISSN 0440-1298

Abstract in another language

Burrowing small mammals in grasslands have long been regarded as pests because they compete for forage with livestock and reduce the forage availability for livestock by destroying pastures through their intensive digging activity. In order to investigate forage competition between the Mongolian Pika (Ochotona pallasi) and livestock an exclosure experiment consisting of four different treatments was set up. The treatments were: 1) accessible only for pikas, (only pika) 2) accessible only for livestock, (onlylivestock) 3) accessible for both herbivore groups (pika & livestock) and 4) no grazing (nograzing). During the investigation period all requirements for forage competition, namely overlap of habitat use, overlap of forage use, and forage scarcity were met. The results of the exclosure experiment show that in the year of this study pikas consume a higher percentage of the vegetation than livestock does. Therefore, pikas are competitively superior to livestock. Nevertheless, both groups can coexist as they have access to mutually exclusive forage resources. For pikas this resource probably is the forage below the biting height of livestock, whereas livestock can reach forage on pastures far away by migration.

Further data

Item Type: Article in a journal
Refereed: No
Additional notes: BAYCEER29534
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 29 Jun 2015 06:10
Last Modified: 10 Mar 2016 14:09
URI: https://eref.uni-bayreuth.de/id/eprint/15552