動物が動く軌跡の密度と分布の評価

概要

論文の詳細を見る
Few studies have addressed the movements of animals as a source of various kinds of encounters, a proportion of which lead to interaction of individuals. The author proposed the trail density of an animal group as density × mean speed. Compared to density, the trail density is a more direct parameter of, for example, activity, density effect and encounter frequency. The frequency of encountering each resource consists of a proper denominator to estimate the selectivity of resource use by animals. A simple method for estimating trail density is to count the number of animals visiting an area or a trap. The distribution range of the trail of an individual is a unit area of encounter and interaction. An animal group consisting of widely moving individuals tends to have a less concentrated trail density and can enjoy high selectivity of many kinds of resources. The distribution pattern of trail density, decided by the mode of animal movement, creates several structures within a community.
日本生態学会の論文
1995-12-20