01184naa a2200205 a 450000100080000000500110000800800410001910000160006024500590007626000090013552006660014465000110081065300140082165300150083565300100085065300230086065300220088370000200090577300530092517870702013-09-05       1978    bl ---       0--  u    #d1 aDALE, M. B.  aA new method of species-reduction for ecological data.  c1978  aExisting strategies for species-reduction in data matrices from species-rich communities are critically reviewed, and a new method is proposed. It is based on a two-parameter model; each species can be associated with an 'eident value', which is a measure of the extent to which that species discriminates between site-groups. The method is applied to a small segment of agronomic data, and to a rainforest survey, and in both cases is shown to produce meaningful results. Application of the method promises greatly to reduce the computing time currently needed for two-parameter analyses, and therefore to allow more extensive search techniques to be employed.  aPlanta  aCommunity  aComunidade  aPlant  aReducao de especie  aSpecies-reduction1 aWILLIAMS, W. T.  tAustralian Journal of Ecologygv.3, p.1-5, 1978.