The difficulty of estimating population densities of nocturnal forest mammals from transect counts of animals
The difficulty of estimating population densities of nocturnal forest mammals from transect counts of animals
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DOI：
10.1111/j.1469-7998.1998.tb00183.x
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发表时间：
1998-12-01
影响因子：
2
通讯作者：
Duckworth, JW
中科院分区：
文献类型：
--
作者：
Duckworth, JW
许多夜间活动的中小型森林哺乳动物只能通过直接观察或听到每一个个体来进行调查。在热带地区尤其如此。标志（脚印、粪便划痕等）通常无法识别物种（相似的物种经常出现在一起）;村民的识别很少足够明确，无法用于研究目的，市场上的标本的来源很少能以令人满意的精度确定。对于许多保护目的来说，通过简短调查对动物状况进行评估变得越来越重要。一个可重复的方法，夜间哺乳动物的地位进行实地评估，需要进行比较，特别是网站之间。
Many nocturnal small- to medium-sized forest mammals can be surveyed only by directly sighting or hearing each individual. This is particularly so in tropical regions. Signs (footprints, dung scratch-marks, etc.) are often not identifiable to species (similar species frequently occur together); villagers' identifications are rarely clear enough for research purposes, and the provenance of specimens in markets can rarely be established to satisfactory precision. Assessments of animal status from brief surveys are becoming increasingly important for many conservation purposes. A repeatable methodology for field assessment of the status of nocturnal mammals is needed to allow comparisons, particularly between sites.