Laserfiche WebLink
that YOY fish will move between habitats (backwater, eddy and shoreline). The <br />capable of crossing the river. <br />Although recognized as important habitats, descriptions of use and backw <br />have been general, and sometimes contradictory. Haines and Tyus (1990) state <br />squawfish used backwaters greater than 0.15 m deep and were found more frequen <br />backwaters with surface area greater than 750 m2. They, further, indicated th <br />species used backwater habitats of average temperature, but were most abundant <br />14.5°C. They could not distinguish backwater use in autumn by water temperatu <br />a subsequent report (Tyus and Haines 1991) these researchers reported Colorado <br />backwaters that were deeper, warmer (mean 2°C) and more turbid than those not <br />Grabowski and Hiebert (1989), however, reported Colorado squawfish used turbid <br />less than 0.3 m deep with wide connections to the river. Tyus and Karp (1991) <br />Colorado squawfish were most abundant in shallow backwaters where the water to <br />greater than or equal to the main channel. <br />Growl, et al (1995) demonstrated the influence of location within a back <br />Colorado squawfish growth. They reported most YOY Colorado squawfish were cau <br />upper end of backwaters where food was least abundant, temperature was highest <br />rates lowest. Their study showed that growth was highest at backwater mouths <br />greater food availability and temperature fluctuations were favorable. Food a <br />backwaters was always greater than that in the main river, according to Grabow <br />(1989). Cooper and Severn (1994) reported water column invertebrates were mor <br />