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Pallid Sturgeon Recovery Plan
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Pallid Sturgeon Recovery Plan
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Last modified
4/8/2013 4:34:02 PM
Creation date
3/6/2013 2:34:12 PM
Metadata
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Template:
Water Supply Protection
Description
related to the Platte River Endangered Species Partnership (aka Platte River Recovery Implementation Program or PRRIP),
State
NE
Basin
South Platte
Water Division
1
Date
11/7/1993
Author
Pallid Sturgeon Recovery Team, U.S. Fish and Wildlife Service
Title
Recovery Plan for the Pallid Sturgeon (Scaphirhynchus albus)
Water Supply Pro - Doc Type
Report/Study
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and Parks, pers. comm. 1992). These velocities are commonly found throughout <br />the species' range. <br />Pallid sturgeon collected from the Missouri River above Garrison Reservoir in <br />North Dakota during spring and fall seasons of 1988 to 1991 were found in deep <br />pools at the downstream end of chutes and sandbars, and in the slower currents <br />of near - shore areas (A. Sandvol, U.S. Fish and Wildlife Service, pers. comm. <br />1992). These areas may have been providing good habitat for energy <br />conservation and feeding. <br />Turbidity: Pallid sturgeon historically occupied turbid river systems. <br />Turbidity levels where pallid sturgeon have been found in South Dakota range <br />from 31.3 Nephelometric turbidity units (NTU) to 137.6 NTU (J. Erickson, pers. <br />comm. 1992). <br />Water Depth: The range of water depths where pallid sturgeon were frequently <br />found in South Dakota are 2 to 6 m (7 to 20 ft) (J. Erickson, pers. comm. <br />1992). In Montana, pallid sturgeon were captured from depths that ranged from <br />1.2 to 3.7 m (3.9 to 12.1 ft) in the summer, but they were captured in deeper <br />waters during winter (P. Clancey, pers. comm. 1992) During late summer in <br />North Dakota, pallid sturgeon were captured at depths that ranged from 2.1 to <br />7.6 m (6.9 to 24.9 ft) (A. Sandvol, pers. comm. 1992). One pallid sturgeon <br />collected on the Yellowstone River in July 1991 was captured at a depth of <br />1 to 2 m (3.3 to 6.6 ft) (Watson and Stewart 1991). One pallid sturgeon <br />collected in the lower Platte River in May 1989 was captured at a depth of <br />1.5 m (4.9 ft) (M. Harberg, U.S. Army Corps of Engineers, pers. comm. 1992). <br />Substrate: Pallid sturgeon are most frequently caught over a sand bottom, <br />which is the predominant bottom substrate within the species' range on the <br />Missouri and Mississippi Rivers. The pallid sturgeon collected on the <br />Yellowstone River in July 1991 by Watson and Stewart (1991) was over a bottom <br />of mainly gravel and rock, which is the predominant substrate at that capture <br />site. <br />Temperature: Pallid sturgeon inhabit areas where the water temperatures range <br />from 0 °C to 30 °C (32 °F to 86 0F), which is the range of water temperature on the <br />Missouri and Mississippi Rivers. There is no information to indicate <br />temperature preference or the effects of temperature on the species. Curtis <br />(1990) found no relation between surface water temperatures and depth used by <br />shovelnose sturgeon on the Mississippi River and no indication that shovelnose <br />sturgeon were moving into deeper, cooler water (if available) as water <br />temperature increased. <br />Life History <br />Reproductive Biology: Little is known about reproduction or spawning <br />activities of pallid sturgeon. Even basic parameters such as spawning <br />locations, substrate preference, water temperature, or time of year have not <br />been documented. No spawning beds have been located and larval pallid <br />sturgeon have not been recorded by investigators. (There is presently no <br />information available that distinguishes larval pallid sturgeon from larval <br />8 <br />
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