Browsing Lee, Richard by Author "Iverson, John B."
Now showing items 1-5 of 5
-
Cold hardiness and overwintering strategies of hatchlings in an assemblage of northern turtles.
Constanzo, Jon P.; Iverson, John B.; Wright, Michael F.; Lee, Richard E.Field and laboratory studies were conducted during 1989-1994 to investigate the overwintering strategies of hatching turtles representing four families native to western Nebraska. Whereas hatchling snapping turtles (Chelydra ... -
Cold-hardiness and evaporative water loss in hatchling turtles.
Costanzo, Jon P.; Litzgus, Jacqueline D.; Iverson, John B.; Lee, Richard E.North American turtles hatch in late summer and spend their first winter either on land or underwater. Adaptations for terrestrial overwintering of hatchlings in northern regions, where winter thermal and hydric regimes ... -
Ice nuclei in soil compromise cold hardiness of hatchling painted turtles, Chrysemys picta.
Costanzo, Jon P.; Litzgus, Jacqueline D.; Iverson, John B.; Lee, Richard E.Hatchling painted turtles (Chrysemys picta) commonly overwinter within their natal nests and survive exposure to temperatures as low as -12 degrees C by supercooling. We report that the supercooling capacity of hatchling ... -
Physiological Ecology of Overwintering in the Hatchling Painted Turtle: Multiple-Scale Variation in response to Environmental Stress
Costanzo, Jon P.; Dinkelacker, Stephen A.; Iverson, John B.; Lee, Richard E.We integrates field and laboratory studies in an investigation of water balance, energy use, and mechanisms of cold-hardiness in hatchling painted turtles (Chrysemys picta) indigenous to west-central Nebraska (Chrysemys ... -
Survival and physiological responses of hatchling Blanding's turtles (Emydoidea blandingii) to submergence in normoxic and hypoxic water under simulated winter conditions.
Dinkelacker, Stephen A.; Costanzo, Jon P.; Iverson, John B.; Lee, Richard E.Abstract Overwintering habits of hatchling Blanding’s turtles (Emydoidea blandingii) are unknown. To determine whether these turtles are able to survive winter in aquatic habitats, we submerged hatchlings in normoxic (155 ...