论文摘要
Ecological dynamics and faunal diversity documentation is normally conducted by direct observation and trapping of live animals. However,surveys of carnivore scat prey and surface bone remains, which are relatively inexpensive, can provide complementary data that expand carnivore diet breadth and may improve accuracy regarding inferences of the ecological dynamics of a given ecosystem. We used this inexpensive method to document species diversity variation with elevation on the leeward（Sirimon） and windward（Chogoria）areas of Mt. Kenya. Bone and fecal specimens were opportunistically collected by walking 2 km in opposite directions from transect points selected at 200-m intervals along the elevational gradient of the study areas. We collected a total of 220 carnivore fecal and owl pellet specimens from both study sites, which were mainly deposited by the spotted hyena（Crocuta crocuta）, leopard（Panthera pardus）,serval（Leptailurus serval）, genet（Genetta sp.）, and Mackinder’s Cape owl（Bubo capensis mackinderi）.Serval scats were the most common, followed by those of the spotted hyena. Scats and bones were found at the lowest density at the lowest elevations,peaked at mid-higher elevations, and then declined at the highest elevations. Based on skeletal analysis only, there were more species in Sirimon（19） than in Chogoria（12）. Small fauna（rodents to duiker size bovids） formed the bulk of the identified remains,representing 87.9% of the Sirimon fauna and 90.9% of the Chogoria fauna. The genus Otomys was the dominant prey of the owl and serval in both sites. Three giraffe teeth were found at 3 500 m a.s.l. in Chogoria on the edge of Lake El is, suggesting that it is an occasional visitor to such high elevations. This study underscores the value of fecal and bone surveys in understanding the diet and diversity of mammals in ecological ecosystems,but such surveys should be complemented with analysis of hairs found in scats to obtain a more complete list of carnivore prey at Mt. Kenya.
论文目录
文章来源
类型: 期刊论文
作者: Ogeto Mwebi,Esther Nguta,Veronica Onduso,Ben Nyakundi,Xue-Long Jiang,Esther N.Kioko
来源: Zoological Research 2019年01期
年度: 2019
分类: 基础科学,农业科技
专业: 生物学
单位: Osteology Section, Department of Zoology, National Museums of Kenya,Kunming Institute of Zoology, Chinese Academy of Sciences,Sino-African Joint Research Center, Chinese Academy of Sciences
基金: supported by the Sino-Africa Joint Research Centre,Chinese Academy of Sciences(SAJC201612)
分类号: Q958
页码: 61-69
总页数: 9
文件大小: 3615K
下载量: 36
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