...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Conservation Biology >Effect of scale on trait predictors of species responses to agriculture
【24h】

Effect of scale on trait predictors of species responses to agriculture

机译：尺度对物种对农业反应的性状预测指标的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Species persistence in human-altered landscapes can depend on factors operating at multiple spatial scales. To understand anthropogenic impacts on biodiversity, it is useful to examine relationships between species traits and their responses to land-use change. A key knowledge gap concerns whether these relationships vary depending on the scale of response under consideration. We examined how local- and large-scale habitat variables influence the occupancy dynamics of a bird community in cloud forest zones in the Colombian Choco-Andes. Using data collected across a continuum of forest and agriculture, we examined which traits best predict species responses to local variation in farmland and which traits best predict species responses to isolation from contiguous forest. Global range size was a strong predictor of species responses to agriculture at both scales; widespread species were less likely to decline as local habitat cover decreased and as distance from forest increased. Habitat specialization was a strong predictor of species responses only at the local scale. Open-habitat species were particularly likely to increase as pasture increased, but they were relatively insensitive to variation in distance to forest. Foraging plasticity and flocking behavior were strong predictors of species responses to distance from forest, but not their responses to local habitat. Species with lower plasticity in foraging behaviors and obligate flock-following species were more likely to decline as distance from contiguous forest increased. For species exhibiting these latter traits, persistence in tropical landscapes may depend on the protection of larger contiguous blocks of forest, rather than the integration of smaller-scale woodland areas within farmland. Species listed as threatened or near threatened on the International Union for Conservation of Nature Red List were also more likely to decline in response to both local habitat quality and isolation from forest relative to least-concern species, underlining the importance of contiguous forests for threatened taxa.
机译：人类改变的景观中的物种持久性可能取决于在多个空间尺度上运作的因素。为了了解人为因素对生物多样性的影响，检查物种特征与其对土地利用变化的反应之间的关系非常有用。关键的知识差距涉及这些关系是否根据所考虑的响应规模而变化。我们研究了局部和大规模生境变量如何影响哥伦比亚Choco-Andes云林地区鸟类群落的居住动态。使用在整个森林和农业连续体中收集的数据，我们检查了哪些特征最能预测物种对农田局部变异的响应，哪些特征最能预测物种对邻近森林隔离的响应。全球范围的大小是两个尺度上物种对农业反应的有力预测指标。随着当地栖息地覆盖面积的减少以及与森林的距离增加，广泛的物种减少的可能性较小。生境专业化仅在地方尺度上是物种反应的有力预测指标。开放栖息地物种特别可能随着牧场的增加而增加，但它们对到森林的距离变化相对不敏感。觅食的可塑性和植绒行为是物种对离森林距离的反应的强预测因子，但不是其对当地栖息地的响应的预测因子。随着与邻近森林距离的增加，觅食行为中可塑性较低的物种和专性的羊群跟随物种更可能减少。对于具有这些后继特征的物种，在热带景观中的持久性可能取决于对较大的连续森林的保护，而不是农田中较小规模林地的整合。在国际自然保护联盟红色名录上被列为濒危或濒临灭绝的物种也更可能因当地生境质量下降和与最不关注物种相对于森林的隔离而下降，突显了连续森林对于受威胁生物分类的重要性。

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