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indicate adults and sub-adults are decreasing throughout the entire Green River subbasin (Service <br /> 2014b). <br /> The downlisting demographic criteria for Colorado pikeminnow in the Green River subbasin <br /> require that separate adult point estimates for the middle Green River and lower Green River do <br /> not show a statistically significant decline over a 5-year period, and each estimate for the Green <br /> River subbasin exceeds 2,600 adults (estimated minimum viable population [MVP] number) <br /> (Service 2002b). The average of the first two sets of adult estimates was 3,020 (between 2000— <br /> 2008). The preliminary estimates for 2011-2013 are below 2,600 adults in each year. <br /> 6000 Green River Subbasin: Colorado Pikeminnow Adults <br /> 5000 <br /> 41 <br /> M <br /> m <br /> E 4000 <br /> LU <br /> W T <br /> v <br /> -ma 3000 1 <br /> 1 <br /> 1 <br /> 2000 J J J <br /> a <br /> 1000 <br /> 0 <br /> 1999 2001 2003 2005 Yea2i-007 2009 2011 2013 <br /> Figure 3. Adult Colorado pikeminnow population abundance estimates for the Green River <br /> (2000-2008 estimates from Bestgen et al. 2010; preliminary estimates for 2011-2013 from <br /> Bestgen et al. 2013). Error bars represent the 95 percent confidence intervals. In 2000, the <br /> lower Green River was not sampled. The data depicted for 2000 incorporates an extrapolated <br /> lower Green River contribution to the overall population estimate and therefore lacks a <br /> confidence interval. <br /> Another demographic requirement in the 2002 Recovery Goals is that recruitment of naturally <br /> produced fish reaching the age of 6 must equal or exceed mean annual adult mortality. Estimates <br /> of recruitment age-6 fish have averaged 1,455 since 2001,but have varied widely(Figure 4). <br /> Recruitment has exceeded annual adult mortality in some years, but not others,which falls short <br /> of meeting the recruitment recovery goal for the Green River subbasin (Service 2011 a; Service <br /> 2015a). However,this criterion is currently being revised to allow for a longer tracking period to <br /> accommodate natural fluctuations observed in the Green River population (Service 2011 a). <br /> 10 <br />