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<br />6 <br /> <br />multi plate samplers or a benthic transect. It is not necessary to sample <br />more frequently than every 30 to 40 days. and multiplates should colonize <br />at least that long between samplings. The reasoning here is that <br />subsequent samples are not replicates because the species and <br />metamorphic life stages adjust throughout the year due to the generation <br />time periods of individual species of invertebrates. Replication must be <br />obtained each time a sample is taken. <br /> <br />Comments on Table 2 {pages 13 and 141. <br /> <br />Several methods can be used to provide CPUE data but the same gear <br />and effort should be used for the same species in each test site. An effort <br />should be made to use one gear that works to collect all species or at least <br />primary species of concern in both the native and nonnative groups. ltis <br />acceptable if some (e.g., razorback sucker) species are co!lected in low <br />frequency as long as you can assume that they are otherwise fully recruited <br />to the gear in the proportion that they exist in the population. You can use <br />a catch curve to eliminate un-recruited age groups from the analyses. It <br />would be useful to develop a gear such as a large area block-net or wing net <br />that would sample, on a daily basis the ingress or egress of all fish species <br />from the test sites. Such a trap could be left in place in each site and all <br />fish removed daily for a continuous period of several weeks or more. The <br />frequency of sampling should be dictated by the limitations of man-power, <br />such that all test sites are fished in nearly the same time period, preferably <br />at the same time (i.e., one team samples one site while other teams sample <br />other sites during the same flow conditions). <br /> <br />Comments on Products and Time Frames {page 15}. <br /> <br />It is important that levee removal should be completed prior to the <br />onset of the seasonal flood pulse. If overbank flows were underway and <br />levee removal on some S'ltes was not completed until after the onset of <br />overbank flows, these sites should not be included in the means differences <br />testing this season. <br />