Variability of results from the use of PHABSIM in estimating habitat area

摘要: The estimation of the area a stream reach suitable as habitat for an aquatic species by Instream Flow Incremental Methodology is described. An important component methodology PHABSIM, which collection computer programs whereby useable computed function discharge. This comprises variety options both hydraulic and simulation. A single data set used to calculate at one discharge three life stages brown trout, using various in results are shown vary greatly according particular combination selected, so unless calculations founded on biologically realistic assumptions potential within PHABSIM „fudging” considerable.