• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Scientific Reports >The effect of land-use on the diversity and mass-abundance relationships of understory avian insectivores in Sri Lanka and southern India
【2h】

The effect of land-use on the diversity and mass-abundance relationships of understory avian insectivores in Sri Lanka and southern India

机译：土地利用对斯里兰卡和印度南部林下食虫食虫的多样性和质量-丰度关系的影响

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Understory avian insectivores are especially sensitive to deforestation, although regional differences in how these species respond to human disturbance may be linked to varying land-use histories. South Asia experienced widespread conversion of forest to agriculture in the nineteenth century, providing a comparison to tropical areas deforested more recently. In Sri Lanka and the Western Ghats of India, we compared understory insectivores to other guilds, and to insectivores with different vertical strata preferences, both inside mixed-species flocks and for the whole bird community. Overall species richness did not change across the land-use gradient, although there was substantial turnover in species composition between land-use types. We found that the proportion of species represented by insectivores was ~1.14 times higher in forest compared to agriculture, and the proportion of insectivores represented by understory species was ~1.32 times higher in forests. Mass-abundance relationships were very different when analyzed on mixed-species flocks compared to the total community, perhaps indicating reduced competition in these mutualisms. We show that South Asia fits the worldwide pattern of understory insectivores declining with increased land-use intensity, and conclude that these species can be used globally as indicator and/or umbrella species for conservation across different disturbance time scales.
机译：林下鸟类食虫动物对森林砍伐特别敏感，尽管这些物种对人类干扰的反应方式上的地区差异可能与土地使用历史的变化有关。南亚在19世纪经历了从森林到农业的广泛转变，这可以与最近被砍伐的热带地区进行比较。在斯里兰卡和印度的西高止山脉，我们将林下食虫类动物与其他行会以及具有不同垂直层次偏好的食虫性动物进行了比较，包括混合物种群内部和整个鸟类群落。尽管土地利用类型之间的物种组成有很大的变化，但总体物种丰富度并没有随土地利用梯度变化。我们发现，与农业相比，森林中以食虫类为代表的物种比例高约1.14倍，森林中以林下食虫类所代表的食虫性比例约高1.32倍。当与混合种群相比时，对混合物种种群的质量－丰度关系有很大的不同，这也许表明这些互惠关系的竞争减少了。我们表明，南亚适合于全球范围内随着土地利用强度而下降的地下食虫动物的格局，并得出结论，这些物种可在全球范围内用作在不同干扰时间尺度上进行保护的指示性和/或保护性物种。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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