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长毛速掘鼠的生态学以及对埃塞俄比亚中部Angacha地区农田的影响(英文)
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作者 abebe kokiso Afework BEKELE 《动物学报》 SCIE CAS CSCD 北大核心 2008年第1期30-35,共6页
于2005年8月-2006年4月研究了埃塞俄比亚Angacha地区农田中的长毛速掘鼠的分布、多度以及影响。通过直接计数地面的新隆起来估计速掘鼠的分布和多度,通过分析胃容物确定了四个地区(分别代表了"凉爽"和"温暖"的温带... 于2005年8月-2006年4月研究了埃塞俄比亚Angacha地区农田中的长毛速掘鼠的分布、多度以及影响。通过直接计数地面的新隆起来估计速掘鼠的分布和多度,通过分析胃容物确定了四个地区(分别代表了"凉爽"和"温暖"的温带气候区)速掘鼠的食物成分。通过挖洞和鼠夹捕捉发现,两个凉爽区域内速掘鼠的数量分别为12只/ha和15只/ha ,而温暖区域内的数量分别为7只/ha和10只/ha。捕捉到31只活体,其中包括22只成体和9只幼体。性比为2·1∶1·0 (雄性∶雌性)。与农田相比,长毛速掘更喜爱开阔的草地以延长其采食隧道。水沟、土地肥力和食物资源的可得性是减少洞穴系统长度(11·3 -18·6 m)的主要因素。雌、雄鼠隐蔽洞(Bolthole)、卧室、采食隧道的长度和深度无显著差异。速掘鼠取食人类种植的埃塞俄比亚蕉和马铃薯所造成的损失占本地经济损失的12 %,控制鼠害的关键是发展合适的控制方法以将对埃塞俄比亚蕉种植的影响减少到最低程度。 展开更多
关键词 长毛速掘鼠 鼠害 埃塞俄比亚蕉 Angacha 埃塞俄比亚
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Avian diversity in hedgerows,preference to hedgerow types and their conservation at Angacha (Kembatta),central Ethiopia
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作者 abebe kokiso 《Chinese Birds》 2012年第2期137-142,共6页
The present study aimed to investigate avian diversity in hedgerows at Angacha, in the Kembatta zone, Ethiopia. Transect and point-count methods were deployed to determine avian diversity, species richness, similarity... The present study aimed to investigate avian diversity in hedgerows at Angacha, in the Kembatta zone, Ethiopia. Transect and point-count methods were deployed to determine avian diversity, species richness, similarity and preferences across five sub study sites. Diversity and preferences of birds to hedgerow types varied in relation to their vegetation composition and structure. Five endemic species, i.e., Rüppel’s Black Chat (Cossyfa semirufa), the White-cheeked Turaco (Tauraco leucotis), the Banded Barbet (Lybius undatus), the Abyssinian Oriole (Oriolus monacha) and the Wattled Ibis (Bostrychia carucullatta) were recorded in the thick hedgerow type. Thickness, height and width of hedgerows affected the diversity, distribution and habitat preference of birds. Thick hedgerow types showed the highest avian species diversity, richness and similarity. There was a high correlation between the hedgerow diversity and its bird diversity, which was directly associated with habitat quality. Bird species diversity and preference for hedgerow types require important conservation and management priorities. 展开更多
关键词 avian diversity HEDGEROWS preference to hedgerow types species richness and similarity
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