The five-year data set was used to describe GSL ecosystem use by individual species with local population sizes according to survey period. It was then used to map their distribution around the lake. These data have been compared to global and North American population estimates where available. Our analytical approach has allowed us to identify peak periods of species presence, expressed by five-year means. Data are also available to identify the mean peak survey period, as well as the highest count recorded for one survey period during the five years. Mean occurrence by survey period are charted and mapped by survey area (Appendix 6).

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