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<br />" <br /> <br />, <br /> <br />~\ <br /> <br />Element Global Ranking Form as of 04 JUN 1996 <br />GILA BICOLOR VACCACEPS <br /> <br />Identifiers: <br />ELCODE: AFCJB1303M <br />GNAME: GILA BICOLOR VACCACEPS <br />ELDESCRIP: Cowhead Lake tui chub: Cyprinidae <br /> <br />EO Soecifications: <br />EOSPECS: <br /> <br />ARANKSPECS: <br /> <br />BRANKSPECS: <br /> <br />CRANKSPECS: <br /> <br />DRANKSPECS: <br /> <br />Descriotors: <br />TAXDIST: <br />GTAXCOM: <br /> <br />TAXON. STAT: <br />See A80BIL01NA for original description; had been recognized <br />as a distinct form as early as 1948. <br /> <br />OLD.TAXCOM: <br /> <br />GEXEMPSITE: COWHEAD LAKE SLOUGH, MODOC CO., CA. <br />HABITAT: A small muddy creek with a series of pools and riffles which <br />meanders through a lava canyon. Pools are up to 50 sq.m, <br />temperatures are 18-32 degrees C in summer, and flows are <br />0.5 CFS. <br /> <br />PERMANENCE: Permanent. <br /> <br />Rankinq Factors: <br />GESTEOS : A <br />GESTEOSCOM: Confined currently to 4 km of a single slough. <br /> <br />GABUND: <br />GABUNDCOM: Unkown. They are apparently abundant in their limited <br />habitat, but it is rarely sampled. <br /> <br />GRANGE: A <br />GRANGECOM: Confined to about 4 km of slough below cowhead Lake in the <br />extreme northeastern corner of Modoc Co., Ca. Historically <br />these chubs probably occupied Cowhead Lake, Cowhead Lake <br />slough, and perhaps some to the sloughs tributaries: Eight <br />Mile, Ten Mile, and Twelve Mile Creeks. <br /> <br />GTREND: <br />GTRENDCOM: <br /> <br />GPROTEOS: <br />GPROTCOM: <br /> <br />A <br />Most of their habitat is on BLM land, and it is heavily <br />grazed. <br /> <br />GTHREAT : A <br />GTHREATCOM: Highly vulnerable to diversion of the creeks which feed the <br />slough, destruction of slough habitat by heavy cattle <br />