Rare Animals of Back Bay, Virginia Beach, Virginia

(First paragraph) The Back Bay region is located in extreme southeastern Virginia and extends into adjacent North Carolina as the upper reach of the Currituck Sound watershed. The Back Bay ecosystem encompasses the only large intact barrier beach system in Virginia south of the Chesapeake Bay. The dynamic natural resource history of Back Bay is well known for waterfowl and fishes; however, the significance of this region is poorly known for the majority of plants, animals, and natural communities (but see Ludwig, et al. this volume)

Advertisement Call and Distribution of the Treefrogs Hyla chrysoscelis and Hyla versicolor in Virginia

The gray treefrog complex consists of two sibling species that are indistinguishable morphologically, the diploid Hyla chrysoscelis and the tetraploid Hyla versicolor. Identification is possible in the field only by audio recognition of male advertisement call trill rates (pulses/second). During 1979-1983 we evaluated taped calls of these two species taken from 89 populations from throughout Virginia to map their respective ranges and to evaluate differences in call parameters. Hyla chrysoscelis occurs in the Coastal Plain, eastern and southern Piedmont, and in southwestern Virginia. Hyla versicoloroccurs in the Piedmont, Blue Ridge, and Ridge and Valley regions south to Wythe and Tazewell counties. Sympatric sites occur in several locations in the Piedmont and both species are syntopic in several of them. Male trill rates are significantly related to Ambient and body temperatures. Rates produced by male H. chrysoscelis (\u3e31/s) are twice as fast as that for H. versicolor (\u3c30/s); they did not overlap in our samples at any temperature. Trill rates and call duration in southwestern Virginia populations of H. chrysoscelis differed significantly from those in eastern populations when adjusted for ambient temperature. Adjusted trill rate and duration in H. Chrysoscelis populations in sympatry with H. versicolor were not significantly different from allopatric populations but were for H. versicolor

Ecology of Freshwater Turtles in Back Bay, Virginia

The freshwater turtle community of Back Bay National Wildlife Refuge and False Cape State Park is comprised of seven species: Clemmys guttata, Chrysemys picta, Chelydra serpentina, Kinosternon subrubrum, Pseudemys rubrivenfris, Terrapene carolina, and Trachemys scripta. Resource partitioning in this community is accomplished by habitat selection and dietary differences. Three species exhibit strong female biased sexual size dimorphism and one species strong male biased sexual size dimorphism; three species do not exhibit strong size dimorphism. Nesting occurs from about late-May through June and probably longer. Clutch size ranges from a low of three in the smallest species (Kinosternon subrubrum) to a high of 55 in the largest species (Chelydra serpentina). Trapping success varied seasonally and annually. Freshwater turtles play important ecological roles in wetland ecosystems and every effort should be made to insure the continued viability of all populations

The Amphibians and Reptiles of Back Bay, Virginia

(First Paragraph) Past authors who documented the distributions of eastern North American amphibians and reptiles illustrated the southeastern corner of Virginia as the northern limit of distribution for many species (Conant 1958, 1975; Martof et al. 1980). These maps were not sufficiently detailed to allow resolution of specific areas; the entire region was completely shaded

Natural heritage inventory of the Clear Creek Ranger District, Arapaho-Roosevelt National Forest: phase II, final report

Prepared for: Clear Creek Ranger District, Arapaho-Roosevelt National Forest.Includes bibliographical references

Natural heritage inventory of Jefferson County, Colorado

Prepared for: Jefferson County Open Space.18 March 1993

Natural heritage resources of the Glade Park-Piñon Mesa Area, Mesa County, Colorado and Grand County, Utah

Prepared for: the Nature Conservancy's Colorado Field Office.March 18, 1996.Includes bibliographical references

Natural heritage inventory of the town of Vail: final report

Prepared for: the town of Vail.March 29, 1994

Sensitive species and natural communities known to occur on the Picket Wire Canyonlands, Comanche National Grassland, Colorado

November 15, 1995.Christopher A. Pague ... [et al.]