A Community Perspective on the Multidimensional Niche
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TL;DR
A procedure that allows for a community perspective on the niche which is not limited to an analysis by pairs is described and used to investigate the niche in a community of cyprinids.
Abstract
SUMMARY (1) Previous research into resource partitioning/competition has generally been limited to a pairwise inspection due to available methodologies. Here we describe a procedure that allows for a community perspective on the niche which is not limited to an analysis by pairs. (2) Multivariate statistical analyses, such as principal component analysis and principal coordinate analysis, can be used to create independent axes of resource utilization for a community. The niche hypervolume for each species is calculated from the product of the ranges of resource exploitations on each axis. This product defines a niche which is an n-dimensional rectangular parallelepiped (or n-box). (3) Formulas for the calculation of the intersection and total community niche hypervolume are presented. Minor modifications of these formulas allow for the calculation of the levels of intersection, where levels of intersection refer to how much a species' or community's space is overlapped, and by how many species. (4) We used these procedures to investigate the niche in a community of cyprinids.
