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Last modified
7/14/2009 5:02:34 PM
Creation date
6/1/2009 12:01:29 PM
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UCREFRP
UCREFRP Catalog Number
8290
Author
Day, K. S. and C. Crosby.
Title
An Assessment of Young-of-the-Year Colorado Squawfish (Ptychocheilus lucius) Use of Backwater Habitats in the Green River, Utah.
USFW Year
1997.
USFW - Doc Type
FG-33,
Copyright Material
NO
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across the backwater at the mouth, at a point 1/3 the distance from the mouth <br />and again at a point 2/3 the distance from the mouth to the upper end (Figure <br />backwater was too deep, the seine was pulled parallel to shore. A smaller (lm <br />1.5mm mesh was used in narrow, shallower backwaters or when larval fish were p <br />Extremely small backwaters were often sampled completely with one sweep. Eac <br />examined for the presence of native fishes. Native fishes were placed in a li <br />entire seine had been closely scrutinized. They were then identified to speci <br />released into the backwater. All other fish caught were counted by species an <br />adult). If samples were too large to be counted on site, all native fishes wh <br />were removed for measurement and released. The remaining fish, or a represent <br />thereof, were preserved in 10~ formalin in Whirl-pak® bags for later examinati <br />fish samples were examined by UDWR personnel in Salt Lake-City, Moab or Vernal <br />Larval Fish Laboratory at Colorado State University. Length (m) and depth (m) <br />associated with each seine were recorded. These usually coincided with physic <br />of each backwater, and are described below. In the case of a parallel seine, <br />taken at the outside edge of the net and at points 1/3 and 2/3 the distance f <br />Habitat Features Sampling <br />Physical characteristics of the backwater were measured in conjunction w <br />Forty-six measurements and categorizations were recorded (Figure 2). No measu <br />made in the backwater before seining in order to avoid disturbing the fish com <br />length (m) of each backwater was measured from the center of the mouth to the <br />
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