Faculty

 
Carola A. Haas

Carola A. Haas
Associate Professor of Wildlife Ecology

B.A., Wellesley College (1983)
Ph.D., Cornell University (1990)


Academic Interests:

Behavioral and population ecology; birds, reptiles, and amphibians in production agriculture and forestry systems; landscape effects on reproduction and dispersal


Courses Taught:

Principles of Fisheries and Wildlife (with Eric Hallerman); Wildlife Field Biology; Preparing Vertebrate Museum Specimens; Earth Sustainability Food & Agriculture; Sustainable Food Graduate Seminar (with Elena Serrano); Wildlife Population Dynamics; Dispersal Graduate Seminar; Behavior and Conservation Graduation Seminar (with Jeff Walters)


Professional Achievements:

NSF Postdoctoral appointment (1990-92), Yamanashi University, Japan; Coordinator, North American Section, International Shrike Working Group; Associate Editor, Southern Journal of Applied Forestry(1996-2001); American Ornithologists' Union Elective Member, 2000; Virginia Tech College of Natural Resources Diversity Award 2001; Virginia Tech Advancing Women Award, 2006.


Recent Activities:

Effects of 7 Silvicultural Practices on Terrestrial Salamanders in Southern Appalachian Forests
Southern Appalachian forests have one of the highest densities and diversities of salamanders in the world. Salamanders occur in lower densities in forest stands that have been recently clearcut. However, few studies have addressed the effects of other timber harvesting practices on terrestrial salamanders. The size and type of timber harvest produce different effects on wildlife habitat, and may influence salamander populations differently. This project compares several economically viable methods of forest management. For the past ten years, we have monitored the effects of 7 different oak regeneration techniques at 6 sites in Virginia and West Virginia. Preliminary results indicate a decline in relative abundance of salamanders on plots with any disturbance to the forest canopy.

Southern Appalachian Silviculture and Biodiversity (SASAB) Project

Status and Movements of the Bog Turtle in Virginia
The bog turtle is a small freshwater turtle found in isolated sphagnum bogs and marshy meadows in the eastern United States. Habitat loss and collection for the pet trade have caused many populations to decline and the bog turtle is now afforded legal protection in every state in which it is found. The goals of this study were to re-evaluate the status of known bog turtle populations in Virginia, and to document movement among wetlands using mark-recapture techniques. We observed dispersal events of several hundred meters. We are continuing work to examine importance of habitat corridors.

Status of ecology of flatwoods salamander and Florida bog frog on Elgin Air Force Base.
The flatwoods salamander and the Florida bog frog are rare amphibians with small geographic ranges. For both species we are evaluating how habitat affects small and large scale distribution and whether current management practices are effective for these species. The maintenance of historic fire patterns and connectivity of habitats may be critical to the survival of these species, but challenging to implement.


Selected Publications(students under my direction indicated with an asterisk)

* Bishop , D.C. and C.A. Haas. 2005. Burning trends and potential negative effects of suppressing wetland fires on flatwoods salamanders. Natural Areas Journal 25: 290-294.

*Carter, S.L., B. D. Horne, D.W. Herman, D.K. Nichols , C.A. Haas, and J.C. Mitchell. 2005. Bacterial pneumonia in free-ranging bog turtles, Glyptemys muhlenbergii , from North Carolina and Virginia . Journal of the North Carolina Academy of Science 121: 170-173.

*Amidon, F.A., C. A. Haas, and J.M. Morton. 2004. Breeding biology of the endangered Rota Bridled White-eye. Wilson Bulletin 116:342-346.

Vega Rivera, J.H., D. Ayala , C.A. Haas. 2003. Home-range size, habitat use, and reproduction of the Ivory-billed Woodcreeper ( Xiphorhynchus flavigaster ) in dry forest of western Mexico . Journal of Field Ornithology 74: 141-151.

* Knapp, S.M., C. A. Haas, D.N. Harpole, and R.L. Kirkpatrick. 2003. Initial effects of clearcutting and alternative silvicultural practices on terrestrial salamander abundance. Conservation Biology 17:752-762.

*Carter, S.L. , C.A. Haas, and J.C. Mitchell. 2000. Movements and activity of bog turtles ( Clemmys muhlenbergii ) in southwestern Virginia . Journal of Herpetology 34: 75-80.

*Harpole, D.N. and C.A. Haas. 1999. Effects of 7 silvicultural treatments on terrestrial salamander species richness and relative abundance. Forest Ecology and Management 114: 349-356.

Haas , C.A. 1998. Effects of prior nesting success on site fidelity and breeding dispersal: an experimental approach. Auk 115:929-936.

Haas , C.A. and K.H. Haas. 1998. Brood parasitism by brown-headed cowbirds on brown thrashers: frequency and rates of rejection. Condor 100: 535-540.

*Vega Rivera, J.H., W.J. McShea, J.H. Rappole, and C.A. Haas. 1998. Wood thrush postfledging movements and habitat use in northern Virginia . Condor 100:69-78.

Haas , C.A. 1995. Dispersal and use of corridors by birds in wooded patches on an agricultural landscape. Conservation Biology 9:845-854.

Titus, R.C. and C.A. Haas. 1990. Singing behavior of American Robins in linear and non-linear habitats. Wilson Bulletin 102:325-328.


Current Graduate Students

 

Danielle Bridgers - Nesting Ecology and Ovarian Cycle of Bog Turtles (Glyptemys muhlenbergii) in Southwestern Virginia
Jeff Feaga - Bog turtle habitat
David Garst - Timber rattlesnake in Virginia
Tom Gorman - Florida bog frogs and flatwoods salamander
Jessica Homyack - Red-backed salamanders
Jesse Overcash - Bird communities in forest havest openings - US Forest employee


Current Positions of Former Graduate Students

David Bishop
Natural Resources Manager
Spring Island Trust
Okatie , SC 29902

Kate Kelly
Herpetological Assistant
Missouri Department of Conservation

Shawn L. Carter
Regional Coordinator—inventory and monitoring
National Capital Region—National Park Service
4598 MacArthur Blvd., NW
Washington , DC 20007

Jorge Humberto Vega Rivera
Research Scientist
Chamela Field Station
National Autonomous University of Mexico (UNAM)

 

Shannon M. Knapp
doctoral student in Statistics
Purdue University

Fred Amidon
U.S. Fish and Wildlife Service
Pacific Islands Ecoregion
Honolulu , HI 96850

Amy Meehan
Wildlife Biologist
Maine Dept. Inland Fisheries and Wildlife

Doug Harpole
Extension Agent, 4-H Youth Development
Virginia Cooperative Extension - Fauquier County

Lori Williams
Nongame Wildlife Biologist
North Carolina Wildlife Resources Commission

Last update March, 2007