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Habitat condition and the nutritional quality of seasonal forage and diets: Demographic implications for a declining moose population in northwest Wyoming, USA.

机译：栖息地状况和季节性饲草和饮食的营养质量：美国怀俄明州西北部人口减少对驼鹿种群的影响。

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摘要

Recent research suggested that habitat quality was likely limiting Jackson moose population growth. Thus, we evaluated seasonal browse condition and the quality of forage and diets, and monitored numerous demographic rates for this population. Winter range was more consistently and intensely browsed than summer range. Forage and diet quality was fairly homogeneous and of lower quality in winter than summer. Within summer, moose forages were of lower quality in burned compared with non-burned habitats. Despite selective foraging, the nutritional quality of diets resembled that of the habitat. Habitat-specific demographic rates were typically lower in burned compared with non-burned habitats. Overall the population is declining, however, habitat-specific population models suggest the portion of the population using burns is declining more rapidly than in non-burned habitats. Study findings suggest that wildfire on the summer ranges of these migratory moose is partially responsible for the observed population declines to present.
机译：最近的研究表明，栖息地质量可能会限制杰克逊驼鹿种群的增长。因此，我们评估了季节性浏览条件以及饲草和饮食的质量，并监测了该人群的众多人口统计数据。与夏季范围相比，冬季范围的浏览更为一致且更加深入。牧草和饲料的质量相当均匀，冬天的质量比夏天差。在夏季，与未燃烧的栖息地相比，被燃烧的驼鹿牧草的质量较低。尽管有选择性的觅食，但饮食的营养质量却与栖息地相似。与未焚烧生境相比，在焚烧中生境特定的人口统计学比率通常较低。总体而言，人口在下降，但是，针对特定栖息地的人口模型表明，使用烧伤的人口比例比未燃烧的生境的下降速度更快。研究结果表明，这些迁徙麋在夏季范围内的野火是造成观察到的种群减少的部分原因。

著录项

  • 作者

    Vartanian, Janess M.;

  • 作者单位

    University of Wyoming.;

  • 授予单位 University of Wyoming.;
  • 学科 Agriculture Wildlife Conservation.;Biology Ecology.;Agriculture Wildlife Management.
  • 学位 M.S.
  • 年度 2011
  • 页码 102 p.
  • 总页数 102
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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