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Little information is available on the use of areas enrolled in the Conservation Reserve Program (CRP) by Gunnison sage-grouse (Centrocercus minimus) or the impacts of grazing on their habitat selection and movement patterns. Using radiotelemetry, we monitored 13 Gunnison sage-grouse in San Juan County, Utah, USA during 20012002 to determine their use of CRP. Additionally, in 2002 some of the CRP land used by the birds in 2001 was grazed under a drought emergency declaration. This afforded us an opportunity to monitor their response to livestock grazing. Although Gunnison sage-grouse used CRP for nesting, brood-rearing, and summer habitat, it was not selected in greater proportion than its availability (P 0.10)...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Centrocercus minimus,
Conservation Reserve Program,
Gunnison sage-grouse,
The Wildlife Society,
Utah,
.-Temperature preference of yearling Colorado squawfish, Ptychocheilus lucius, was determined in a horizontal gradient trough. Fish were acclimated to 14, 20, and 26 C, and twenty fish were tested from each acclimation temperature. Acute preferenda were 21.9, 27.6, and 23.7 C for 14, 20, and 26 C -acclimated fish, respectively. Final preferendum was estimated as 25 C. Published in The Southwestern Naturalist, volume 30, issue 1, on pages 95 - 100, in 1985.
ABSTRACT.-Growth rate of yearling Colorado squawfish, Ptychocheilus lucius, over a 12-week period, was determined for fish held at 15, 20, 25, and 30? C with excess food. The effect of temperature on growth rate was highly significant; fastest growth occurred at 25? C. Fish gained about 0.3 gram at 15? C, 0.9 gram at 20 and 30? C, and 1.7 grams at 25? C during the 12-week period. Results suggest that 25? C, the final thermal preferendum, is the temperature at which Colorado squawfish grow fastest with abundant feed. Future water shortage and development projects should be designed to provide summer water temperatures as near this level as feasible. Published in The Southwestern Naturalist, volume 30, issue 2, on...
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