On the Measurement of Niche Breadth and Overlap

摘要: Measures of niche breadth and overlap that depend on the distribution individual among resource states (ecological categories) should be independent relative abundance species number considered. Such measures also take into account degree distinctness from point view organisms concerned. An ecoassay may well easier more meaningful than measurements physical chemical factors. We propose composition communities utilizing different used to develop weighting factors with which each state weighted in proportion its distinctness. The are development indices correct for variation range suffer less human subjectivity do date. use such relationship competition discussed.