• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >The influence of forest harvesting and fire on breeding birds of mature boreal mixedwood forests in northeastern Ontario.
【24h】

The influence of forest harvesting and fire on breeding birds of mature boreal mixedwood forests in northeastern Ontario.

机译：森林采伐和火灾对安大略东北部成熟的北方混交林的繁殖鸟类的影响。

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

In boreal forests, clear-cutting may have a negative influence on forest birds adapted to fire regimes. Using point-counts, I sampled birds in mature post-fire and post-harvest mixedwood stands in northeastern Ontario and examined the relationships between disturbance type and tree age with bird community composition, species richness and abundance. Multivariate analyses showed that post-fire stands had more snags and canopy complexity than post-harvest stands and their bird community was comprised mainly of cavity-nesters and overstory foliage gleaners. In contrast, post-harvest stands had a denser understory and their bird community was comprised of species associated with the shrubs. Guild-level analyses showed that cavity-nesters had a strong negative response to clear-cutting independently of age, correlated with a reduction in the amount of coarse woody debris. These results highlight both the importance of old mixedwood forests for birds, and the need to develop silvicultural methods to better approximate post-fire forest structure.
机译：在北方森林中，砍伐树木会对适应火势的林鸟产生负面影响。利用点数，我在安大略省东北部成熟的火后和收获后的混合林中对鸟类进行了采样，并研究了干扰类型和树龄与鸟类群落组成，物种丰富度和丰度之间的关系。多变量分析表明，与采后林分相比，火后林分有更多的障碍和冠层复杂性，它们的鸟类群落主要由蛀牙巢和茂密的枝叶收割者组成。相比之下，收获后的林下有较浓密的林下，其鸟类群落由与灌木相关的物种组成。行会级别的分析表明，空洞巢穴对清晰的强烈负面反应与年龄无关，与减少的粗木屑相关。这些结果既凸显了老混木林对鸟类的重要性，也需要开发造林方法以更好地估算火灾后森林的结构。

著录项

  • 作者

    Campbell, Brian Dennis.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Biology Ecology.; Agriculture Forestry and Wildlife.
  • 学位 M.Sc.F.
  • 年度 2002
  • 页码 213 p.
  • 总页数 213
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生态学（生物生态学）;森林生物学;
  • 关键词

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