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Titlebook: Our vanishing relative; The status of wild o H. D. Rijksen,E. Meijaard Book 1999 H.D. Rijksen and E. Meijaard 1999 distribution.ecosystem.f

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发表于 2025-3-21 19:56:53 | 显示全部楼层 |阅读模式
书目名称Our vanishing relative
副标题The status of wild o
编辑H. D. Rijksen,E. Meijaard
视频video
图书封面Titlebook: Our vanishing relative; The status of wild o H. D. Rijksen,E. Meijaard Book 1999 H.D. Rijksen and E. Meijaard 1999 distribution.ecosystem.f
描述The orang-utan is a superb representative of a major sector of the structure of biological diversity in Sumatra and Borneo. Conservation of the living conditions of the orang-utan implies maintaining the integrity of the entire natural ecosystem of indigenous plant and animal species known as the West Malesian rainforest, i.e. the natural tropical evergreen forests of distinctive floral composition which stretch from the isthmus of Kra, in Thailand, across peninsular West Malaysia, south and eastwards, including Sumatra, Borneo and Java. The main question behind this study is: What is the current status of the orang-utan? Or in other words: • what is the current geographical distribution range? • what have been the trends in the size of its range and numbers? • to what extent is this range covered by (a) conservation areas, (b) timher concessions (i.e. modified habitat) and (c) plans for conversion (i.e. obliteration of the habitat)? • what is the current quality of habitat in this range and what is the prospect for conservation or restoration of such habitat? • what is a plausible average density of the ape in such habitat? • what are the prospects for protection of the ape? • wha
出版日期Book 1999
关键词distribution; ecosystem; forest; geography; rainforest
版次1
doihttps://doi.org/10.1007/978-94-010-9020-9
isbn_softcover978-0-7923-5755-1
isbn_ebook978-94-010-9020-9
copyrightH.D. Rijksen and E. Meijaard 1999
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https://doi.org/10.1007/978-94-010-9020-9distribution; ecosystem; forest; geography; rainforest
发表于 2025-3-22 04:10:57 | 显示全部楼层
Introduction Despite the good intentions of a few authorities and a formally protected status, the orangutan has become a critically endangered species, the extinction of which within two or three decades is to be feared if no effective counter-action is taken.
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Evaluation of Survey Datanted and no more than a relic of the past. The future looks ominous. Continued, minimally controlled timber exploitation, large-scale conversion, encroachment, arson and the poaching of timber and apes are expected to increase their combined impact, unless major counter-actions are undertaken.
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DiscussionSome human activities result in the entire loss of orang-utan habitat, because regeneration of the forest is unlikely or impossible, for instance, in the case of conversion for agriculture or plantations of cash-crops (oil-palm, rice, maize, sugar, pulp-wood, rubber, coffee, tea, etc.), and open-pit mining.
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