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<br /> <br /> <br /> <br /> <br />1 <br />~~~ <br /> <br /> <br />1 <br />~i <br />METHODS <br />General <br />Three main objectives guided research efforts. The first objective involved an exhaustive <br />literature search and review, from which species descriptions were compiled. Documents <br />from the Colorado State University Larval Fish Laboratory (LFL) and Morgan Library <br />were examined. Online fisheries and aquatic-literature databases, Internet searches, <br />perusal of literature-cited sections of materials already gathered, and personal <br />communications were also used to obtain relevant sources of information. <br />In objective two, species distributions, population trends, and status were described using <br />information from collection records, and distribution and abundance data gathered from <br />museums and state natural resource agencies, regional fish experts, and literature sources. <br />Maps were created as part of the distribution-description process (see Mapping on <br />fallowing page). Sources examined that are not presented in the Literature Cited section <br />are presented in Appendix A. Summaries of species distributions are presented in the <br />Species Descriptions section. Objective three involved peer review of draft reports and <br />incorporation of reviewer comments and additional information. A list of reviewers is <br />presented in Appendix B. <br />Population Trends and Status Determinations <br />' Assessment of population trends was difficult considering the paucity of consistently <br />collected, long-term data sets. Status determinations were also problematic because <br /> <br />1 <br />1 <br /> <br /> <br />abundance estimates were available for a very small portion of the total habitat used by <br />the three study species. General basin-wide population trends and status determinations <br />were inferred from information provided by literature sources and our database collection <br />records. Percent decline in range was calculated from historical and recent distribution <br />maps for each of the study species (see following pages for details of mapping and <br />percern decline calculations). <br />Final Report September 2002 <br />to <br /> <br />