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Effects of residual tree retention of breeding songbirds in Alberta's boreal mixed-wood forest.

机译:艾伯塔省北方混交林中繁殖鸣禽的残留树木保留效应。

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摘要

Residual tree retention has been proposed as a potential tool in the conservation of forest songbirds in logged landscapes. I censused songbirds in forested and logged sites in Alberta's boreal mixed-wood to investigate the effects of densities of residual trees varying from 10 to 133 trees/ha on songbird abundance and used artificial nests to investigate nest predation in the third year post-logging. I compared census data to data collected in the first year post-logging. Although forest songbirds were more abundant in forested than logged sites in both years, there were changes in species responses between years. There were few differences among forest species between sites with varying densities of residual trees. Nest predation did not differ among sites or stands adjacent to sites with varying densities of residual trees. In the third year post-logging, most forest songbirds were not affected by densities of residual trees varying within the range measured.
机译:残留的树木保留已被提议作为在伐木景观中保护森林鸣鸟的一种潜在工具。我对艾伯塔省北方混合林中森林和伐木场的鸣禽进行了调查,以调查10到133棵/公顷不等的残留树木密度对鸣禽丰度的影响,并在人工采伐后的第三年使用人工巢来调查巢穴的捕食情况。我将普查数据与记录后第一年收集的数据进行了比较。尽管在这两年中森林鸣鸟在森林中的数量都比伐木地点丰富,但不同年份之间物种的反应有所变化。在残留树木密度不同的地点之间,森林物种之间几乎没有差异。地点之间的巢穴捕食没有差异,或者与残留树木密度不同的地点相邻的林分。伐木后的第三年,大多数森林鸣鸟没有受到在测量范围内变化的残留树木密度的影响。

著录项

  • 作者

    Tittler, Rebecca.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Biology Ecology.;Biology Zoology.;Agriculture Forestry and Wildlife.
  • 学位 M.Sc.
  • 年度 1998
  • 页码 98 p.
  • 总页数 98
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

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