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Wesche, Karsten ; Nadrowski, Karin ; Retzer, Vroni:
Habitat engineering under dry conditions : The impact of pikas (Ochotona pallasi) on vegetation and site conditions in southern Mongolian steppes.
In: Journal of Vegetation Science.
Bd. 18
(2007)
Heft 5
.
- S. 665-674.
ISSN 1100-9233
DOI: https://doi.org/10.1111/j.1654-1103.2007.tb02580.x
Abstract
Question: Does ecosystem engineering by small mammalshave a significant influence on vegetation patterns in the aridsteppe vegetation of southern Mongolia?
Location: Gobi Altay Mountains, southern Mongolia
Methods: We assessed the impact of the small lagomorph Ochtona pallasi on plant community composition, soil nutrient levels and biomass production in montane desert steppes in southern Mongolia. Data were derived from vegetation relevés, harvests of above-ground standing crop and a bioassay, followed by analyses of soil and plant nutrients.
Results: Although the local climate is arid with Agropyron cristatum. Standing crop and nutrient concentrations were higher for plants growing on burrow soil. In situ measurements and a pot experiment showed that this effect was related to increased levels of soil nutrients (P, K, N) rather than moisture availability.
Conclusions: The study confirms that O. pallasi positively influences soil nutrient levels on its burrows, which leads to increased grassland productivity even under dry conditions. Thus, O. pallasi does not deteriorate site conditions, and the need for presently applied pest control schemes aimed at thisspecies should be reassessed.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | BAYCEER36695 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Biogeographie Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften Forschungseinrichtungen Forschungseinrichtungen > Forschungszentren |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 18 Jun 2015 06:35 |
| Letzte Änderung: | 18 Jun 2015 06:35 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/15236 |