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<br />I <br /> <br />1331 <br /> <br />I <br />.,-J <br /> <br />Methods: <br /> <br />.',1 <br />- .i, <br /> <br />Sampling for razorback sucker larvae will be conducted in the San Juan River between Four <br />Corners (RM 128) and Mexican Hat (RM 53) from mid-April through early June using sampling <br />techniques that will provide sufficient number of individual fish necessary to meet study <br />objectives. Access to the river shall be acquired through the use of either rafts or canoes. The <br />tentative sampling schedule will be on a bi-weekly (approximately) interval. <br /> <br />Sampling efforts for larval fish will be concentrated in low velocity habitats. Samples in those <br />habitats will be collected with small mesh seines and light-traps. Habitat type, length, maximum <br />depth and substrate of the habitat will be recorded. For seine samples, length and number of <br />each seine haul will be determined. Specimens will be preserved in the field for future <br />laboratory processing. Catch per unit effort will be determined as the number of fish per m2 <br />sample for seine samples and the number of fish per hour for individuals collected in light-traps. <br /> <br />Catch rate data and compared across and within sites by species. In addition, catch rate between <br />and within sites will be compared temporally (1997 & 1998 samples). Specimens will be <br />distinguished and compared by residence status (native versus non-native) and catch rate over- <br />laid with the annual hydrograph. <br /> <br />Products: <br /> <br />, <br /> <br />A draft report for the 1999 razorback sucker sampling activities will be prepared and distributed <br />(under a mutually agreed time-frame) to the San Juan River Biology Committee for review. <br />Upon receipt of written comments, that report will be finalization and disseminated to members <br />of the San Juan River Biology Committee. Fish collected from this study will be cura,ted in the <br />Division of Fishes, Museum of Southwestern Biology (MSB), Department of Biology, at the <br />University of New Mexico. Original field notes will be retained in the Division of Fishes and <br />collection information will be electronically stored in a permanent MSB database program. <br />Electronic copies of the field and collection data will be transferred to the San Juan River <br />database manager following the successful protocol previously employed. <br /> <br />Work Plan FY99.wpd <br /> <br />13 <br /> <br />Budget and Work Plan FY99 <br />