Reciprocal Averaging and Polar Ordination as Techniques for Analyzing Lotic Macroinvertebrate Communities

摘要: Reciprocal averaging and polar ordination techniques were applied to lotic macroinvertebrate field data determine the relative performance of these in benthic community analyses. It was found that, because inherent problems with endpoint determinations, should only be used where a well-defined environmental gradient exists. produced interpretable axes preferred over determination objective simultaneous species–site ordinations produced. allowed groupings sites similar those determined through cluster analysis recognized, while providing visual representation between-group relationships superior that dendrograms. Combined subsequent analyses data, reciprocal can an excellent technique for summarizing spatial temporal patterns communities.Key wo...