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An examination of factors influencing the spatial distribution of foraging bats in pine stands in the southeastern United States.

机译：在美国东南部，对影响松树觅食蝙蝠空间分布的因素进行了研究。

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摘要

The general objective of this dissertation was to determine the effect of changes in forest structure on bat activity patterns in southern pine stands. Individual studies included an investigation of the homerange, habitat use, and diet of a species of special concern common to the Southern Pine Region (SPR), Rafinesque's big-eared bat, a investigation of the relative activity of bats below, within, and above forest canopies in 5 vegetational communities, and a review of the distribution and habitat associations of the bats of the SPR.;In my first study, I examined homerange size, habitat use, and diet of four reproductively active male Rafinesque's big-eared bats (Corynorhinus rafinesquii). Bigeared bats had biphasic activity patterns, with most foraging activity occurring during the first 4 hours after sunset and 2 hours before sunrise. The homerange sizes were small relative to other Vespertilionid bats in the southeastern United States. Mean homerange sizes calculated using the 95% utilization distribution adaptive kernel method and 100% contours calculated using the minimum convex polygon method were 93.1 and 70.7 ha, respectively. Although large contiguous tracts of mature bottomland hardwoods were common in the study area, most foraging activity occurred in pine stands. Only 9% of foraging areas were composed of bottomland hardwoods.;In my second study, I examined the diet of 5 reproductively active male Rafinesque's big-eared bats. Diets of these individuals in upland pine stands were similar to diets of Rafinesque's big-eared bats in bottomland and upland hardwood habitats. Although fecal samples contained three insect orders: Diptera (flies), Homoptera (aphids and cicadas), and lepidopterans (moths), the diet consisted primarily of lepidopterans (99.4% +/- 0.4).;In my third study, I compared bat activity levels in the Coastal Plain of South Carolina among 5 vegetational community types: forested riparian areas, clearcuts, young pine plantations, mature pine plantations, and pine savannahs. (Abstract shortened by UMI.).
机译：本文的总体目标是确定森林结构变化对南部松林中蝙蝠活动模式的影响。个别研究包括对南部松树地区（SPR），Rafinesque的大耳蝠常见的特殊物种的栖息地，栖息地使用和饮食的调查，对下方，内部和上方的蝙蝠相对活动的调查。在5个植被群落中的林冠层，以及对SPR蝙蝠的分布和栖息地协会的审查。;在我的第一项研究中，我研究了四只具有繁殖力的雄性Rafinesque的大耳蝙蝠的居家大小，栖息地使用和饮食（ Corynorhinus rafinesquii）。双耳蝙蝠具有双相活动模式，大部分觅食活动发生在日落后的前4小时和日出前的2小时内。相对于美国东南部的其他Vespertilionid蝙蝠，其家养范围较小。使用95％利用率分布自适应核方法计算的平均居家面积大小和使用最小凸多边形方法计算的100％轮廓分别为93.1和70.7公顷。尽管在研究区内常见的是大型连续的成熟底地硬木，但大多数觅食活动都发生在松林中。仅有9％的觅食区由低地硬木组成。在我的第二项研究中，我检查了5只具有繁殖力的雄性拉菲斯克大耳朵蝙蝠的饮食。这些人在高地松树林中的饮食与在地下和高地硬木生境中Rafinesque的大耳蝠的饮食相似。虽然粪便样本中含有三种昆虫：双翅目（蝇），同翅目（蚜虫和蝉）和鳞翅目（蛾），但饮食主要由鳞翅目（99.4％+/- 0.4）组成；在我的第三项研究中，我比较了蝙蝠南卡罗来纳州沿海平原的5种植被群落类型中的活动水平：林地河岸地区，伐木场，年轻的松树人工林，成熟的松树人工林和松树大草原。 （摘要由UMI缩短。）。

著录项

  • 作者

    Menzel, Michael A., Jr.;

  • 作者单位

    West Virginia University.;

  • 授予单位 West Virginia University.;
  • 学科 Agriculture Forestry and Wildlife.
  • 学位 Ph.D.
  • 年度 2003
  • 页码 336 p.
  • 总页数 336
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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