...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Revista Brasileira de Biologia >Conservation value of a native forest fragment in a region of extensive agriculture
【24h】

Conservation value of a native forest fragment in a region of extensive agriculture

机译：粗农业区原生林碎片的保护价值

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A survey of mammals and birds was carried out in a semi-deciduous forest fragment of 150 ha located in a zone of intensive agriculture in Ribeir?o Preto, State of S?o Paulo, south-eastern Brazil. Line transect sampling was used to census mammals and birds during six days, totalling 27.8 km of trails and 27.8 hours of observation. Twenty mammal species were confirmed in the area (except bats and small mammals), including rare or endangered species, such as the mountain lion (Puma concolor), the maned wolf (Chrysocyon brachyurus), and the ocelot (Leopardus pardalis). The brown capuchin monkey (Cebus apella) and the black-tufted-ear marmoset (Callithrix penicillata) were found frequently, suggesting high population density in the fragment. Regarding the avifauna, 49 bird species were recorded, most of them typical of open areas or forest edges. Some confirmed species, however, are becoming increasingly rare in the region, as for example the muscovy duck (Cairina moschata) and the toco toucan (Ramphastos toco). The results demonstrate that forest fragment of this size are refuges for native fauna in a region dominated almost exclusively by sugar-cane plantations. Besides faunal aspects, the conservation of these fragments is of great importance for the establishment of studies related to species preservation in the long term, including reintroduction and translocation projects, as well as studies related to genetic health of isolated populations.
机译：在巴西东南部圣保罗州里贝里奥普雷图集约农业区的150公顷半落叶林中，对哺乳动物和鸟类进行了调查。线样采样用于在六天内对哺乳动物和鸟类进行普查，总计27.8公里的步道和27.8小时的观察时间。在该地区确认了20种哺乳动物物种（蝙蝠和小型哺乳动物除外），包括稀有或濒危物种，例如美洲狮（美洲狮），鬃狼（Chrysocyon brachyurus）和豹猫（豹）。经常发现棕色卷尾猴（Cebus apella）和黑簇耳耳朵mar猴（Callithrix penicillata），表明该片段中的种群密度很高。关于鸟类，记录到49种鸟类，其中大多数是典型的空旷地区或森林边缘。但是，一些已证实的物种在该地区变得越来越稀有，例如番鸭（Cairina moschata）和大嘴巨嘴鸟（Ramphastos toco）。结果表明，这种规模的森林片段是该地区几乎完全由甘蔗种植园主导的本地动物的避难所。除动物方面外，这些片段的保护对于建立与物种长期保存相关的研究（包括再引入和易位项目以及与孤立种群的遗传健康相关的研究）具有重要意义。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号