ABSTRACT

Rapid Bioassessment Protocol (RBP) applies shortcut techniques in its biomonitoring procedures and these have been achieved, along with other things, by limiting the number of benthic invertebrates selected for processing. The original benthic macroinvertebrate protocols generally required the collection of 100 organisms

Introduction ..............................................................................................................95 Site Selection ...........................................................................................................97 Metric Selection .......................................................................................................98 Bootstrap Resampling ..............................................................................................98 Analysis ....................................................................................................................98 The Effect of Subsample Size on Metric Scores ......................................................99