scholarly journals Geology and mineral resources of the Sheldon-Hart Mountain National Wildlife Refuge Complex (Oregon and Nevada), the Southeastern Oregon and North-Central Nevada, and the Southern Idaho and Northern Nevada (and Utah) Sagebrush Focal Areas: Chapter B in Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming

2016 ◽  
Author(s):  
Peter G. Vikre ◽  
Mary Ellen Benson ◽  
Donald I. Bleiwas ◽  
Joseph P. Colgan ◽  
Pamela M. Cossette ◽  
...  
Keyword(s):  
Mineral Resources ◽  
National Wildlife Refuge ◽  
North Central ◽  
Wildlife Refuge ◽  
Northern Nevada ◽  
Hart Mountain

Thermal environment for overwintering hatchlings of the painted turtle (Chrysemys picta)

1997 ◽  
Vol 75 (3) ◽  
pp. 401-406 ◽  
Author(s):  
Gary C. Packard ◽  
Sarah L. Fasano ◽  
Marcus B. Attaway ◽  
Leslie D. Lohmiller ◽  
Trina L. Lynch
Keyword(s):  
Low Temperatures ◽  
Thermal Environment ◽  
Chrysemys Picta ◽  
Painted Turtle ◽  
National Wildlife Refuge ◽  
North Central ◽  
Wildlife Refuge ◽  
Painted Turtles ◽  
Frozen State

We monitored temperatures during the winter of 1995–1996 inside 18 nests containing hatchling painted turtles (Chrysemys picta). The study was performed at the Valentine National Wildlife Refuge in north-central Nebraska to assess survival of neonatal turtles in relation to the thermal environment inside their hibernacula. Minimum temperatures in the nests varied from −3 to −21 °C, and were better predictors of survival of hatchlings than other measures of the thermal environment. All hatchlings survived in nests where the temperature never went below −7 °C, some animals survived in nests where the minimum was between −7 and −13 °C, but no turtle survived in a nest where the minimum was below −14 °C. Hatchlings probably survived the cold by sustaining a state of supercooling, because the duration of exposure to low temperatures was far too long for animals in most nests to have survived in a frozen state.

Sign in / Sign up

Export Citation Format

Share Document