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<br />.. <br /> <br />Table 3. The match or mlsmatch of physical. biological. or chemical <br />factors in the enhancelllellt or flooded bottomland habitats <br />as nursery areas for endangered Colorado River fishes. <br /> <br />PhYSical Considerations <br />Water Supply <br />Surface Water <br />Groundwater <br />Frequency of Inundation <br />River Elevation at Flooding <br />Water Depth <br />Water Duration <br />Control of Water Levels <br />Control of Water Exchange <br />Manipulation of Water Temp. <br />Possible Sediment Control <br /> <br />Bioloqical Considerations <br />Ecosystem Approach <br />Status and Trends of Stocks <br />Genetic Management Possible <br />Imprinting Larvae Possible <br />Batch Marks for Identification <br />of Captive-Reared Fish <br />Size of Captive-Reared Fish <br />at Release (Total Length) <br />Timing of Release <br />Diel <br />Seasonal <br />" <br /> <br />Match <br /> <br />x <br /> <br />1 inS Yrs. <br />1 inS Yrs. <br />0.5 Meter or > <br />Controlled <br />Yes <br />Yes <br />Yes <br />Yes <br /> <br />Yes <br />Known <br />Yes <br />Yes <br /> <br />Essential <br /> <br />100 mm or > <br /> <br />Night <br />Low Flows <br />Temp. > 50 F <br />Summer/Fall <br />Access and Exit for Fish Present <br />Vegetative Cover Present <br />Zooplankton density 50 organisms/l <br />Control of Predators/Competitor <br />Nonnative Fish <br />Predacious Invertebrates <br />Wading Birds (Water Depth) <br />Diving Birds (Veg. Cover) <br />Raccoons (Water Depth) <br />River Otters (Veg. Cover) <br /> <br />Chemical Considerations <br />Acceptable Water Quality <br />Dissolved Oxygen <br />Supersaturation of Nitrogen <br />pH <br />Selenium (in Water) <br />Heavy Metals <br />Pesticides or Herbicides <br /> <br />Necessary <br />Possible <br />0.5 Meter or > <br />Present <br />0.5 Meter or > <br />Present <br /> <br />Low Salt <br />> 5 ppm <br />100% or < <br />7.0 or > <br />2 ppb or < <br />Absent or Low <br />Absent or Low <br /> <br />Mismatch <br /> <br />x <br />< 1 in 5 Yrs. <br />5 Yrs. or > <br />< 0.5 Meter <br />Uncontrolled <br />No <br />No <br />No <br />No <br /> <br />No <br />Unknown <br />No <br />No <br /> <br />Not Possible <br /> <br />< 100 mm <br /> <br />Daylight <br />High Flows <br />Temp. < 50 F <br />Winter/Spring <br />Absent <br />Absent <br />< 50/1 <br /> <br />None <br />Not Possible <br />< 0.5 Meter <br />Absent <br />< 0.5 Meter <br />Absent <br /> <br />Highly Saline <br />< 5 ppm <br />> 102% <br />< 7.0 <br />> 2 ppb <br />Present <br />Present <br /> <br />33 <br />