Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0140-1963 |
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 |
推荐引用方式 GB/T 7714 | 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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