Arid
DOI10.1016/j.jaridenv.2006.06.009
Browsing by goats on three spatial scales in a semi-arid savanna
Skarpe, C.; Jansson, I.; Seljeli, L.; Bergstrom, R.; Roskaft, E.
通讯作者Skarpe, C.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
出版年2007
卷号68期号:3页码:480-491
英文摘要

We tested the theories on hierarchical foraging by large herbivores by studying selection of woody browse by goats in a semi-arid savanna. In the smallest scale, we compared characteristics of woody plants browsed by observed goats with those of all woody plants available for the goats along their feeding paths. Particularly we recorded food selection in relation to plant species, height, canopy cover and previous browsing. In an intermediate scale we compared vegetation characteristics along the paths walked by foraging goats with characteristics of the vegetation available within the feeding site. In the largest scale we compared characteristics of vegetation within the feeding sites with those from the whole landscape. Goat selection was consistent across all scales, and the frequency of the most preferred tree species increased with decreasing scale from landscape to feeding site to feeding path to diet. Within browse species, goats preferred to browse from relatively high trees and from trees with signs of previous browsing. Preference for browse species could not be well explained by intake rate of nutrients or biomass but may be negatively related to intake rate of digestibility reducing compounds. (c) 2006 Elsevier Ltd. All rights reserved.


英文关键词hierachical foraging intake rate plant defences selective foraging
类型Article
语种英语
国家Norway ; Sweden
收录类别SCI-E
WOS记录号WOS:000242769000011
WOS关键词SOUTH-AFRICAN SAVANNA ; DIET SELECTION ; HABITAT SELECTION ; LEAF CHEMISTRY ; FOOD SELECTION ; WOODY-PLANTS ; MODELS ; WINTER ; PALATABILITY ; MAXIMIZATION
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/154740
作者单位(1)Norwegian Inst Nat Res, NO-7485 Trondheim, Norway;(2)Swedish Univ Agr Sci, Dept Anim Ecol, SE-90183 Umea, Sweden;(3)Norwegian Univ Sci & Technol, Dept Biol, NO-7491 Trondheim, Norway;(4)Forestry Res Inst Sweden, SE-75183 Uppsala, Sweden
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Skarpe, C.,Jansson, I.,Seljeli, L.,et al. Browsing by goats on three spatial scales in a semi-arid savanna[J],2007,68(3):480-491.
APA Skarpe, C.,Jansson, I.,Seljeli, L.,Bergstrom, R.,&Roskaft, E..(2007).Browsing by goats on three spatial scales in a semi-arid savanna.JOURNAL OF ARID ENVIRONMENTS,68(3),480-491.
MLA Skarpe, C.,et al."Browsing by goats on three spatial scales in a semi-arid savanna".JOURNAL OF ARID ENVIRONMENTS 68.3(2007):480-491.
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