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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.
Bd. 9
(2005)
.
- S. 147-161.
ISSN 0440-1298
Abstract
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.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Nein |
| Zusätzliche Informationen: | BAYCEER29534 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Biogeographie Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 29 Jun 2015 06:10 |
| Letzte Änderung: | 10 Mär 2016 14:09 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/15552 |