• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Open Journal of Ecology >Bush, bugs, and birds; interdependency in a farming landscape
【24h】

Bush, bugs, and birds; interdependency in a farming landscape

机译：灌木，虫子和鸟类;农业景观中的相互依存

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

摘要

Changes in farming practices over the second half of the twentieth century greatly reduced the extent of natural areas remaining within agricultural landscapes. Field margins and hedgerows have recently been recognized as important habitat in maintaining wildlife diversity and proper ecosystem functioning. Ecotones, defined as the transitionary area of vegetation between woody plant species and the arable crop, are an especially important landscape element for birds and arthropods. In this manuscript, we aimed to evaluate which hedgerow attribute was best at predicting avian densities in a conventional and organic farming landscape. Furthermore, we wished to investigate if these same hedgerow attributes could explain arthropod family density, richness and diversity, and how these were correlated to avian densities. An information theory-based multimodel inference method was used to identify which factors influenced variability in avian densities. Although not always significant, avian densities increased with arthropod richness at our study sites. Ecotone width is the best predictor of avian densities and arthropod richness while percent gap is the most important factor if a manager wishes to increase avian diversity (H’) in hedgerow habitats. Increasing ecotone width benefits both avian densities and arthropod richness that in turn further increases bird numbers in our farming landscape.
机译：在二十世纪下半叶，耕作方式的变化大大减少了自然景观在农业景观中的保留范围。最近，人们认为田间边缘和树篱是维持野生动植物多样性和生态系统正常运转的重要栖息地。过渡带定义为木本植物物种与可耕作物之间的植被过渡区，是鸟类和节肢动物特别重要的景观要素。在本手稿中，我们旨在评估哪种树篱属性最适合预测常规和有机农业景观中的鸟类密度。此外，我们希望调查这些相同的树篱属性是否可以解释节肢动物的家庭密度，丰富性和多样性，以及它们如何与禽类密度相关。基于信息论的多模型推断方法用于确定哪些因素影响禽类密度的变异性。尽管并不总是很重要，但在我们的研究地点，鸟类的密度却随着节肢动物的丰富而增加。如果管理者希望增加树篱生境中的鸟类多样性（H'），则过渡带宽度是鸟类密度和节肢动物丰富度的最佳预测指标，而百分比差距则是最重要的因素。过渡带宽度的增加有利于鸟类密度和节肢动物的丰富度，进而进一步增加了我们耕作景观中的鸟类数量。

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