Studies of Invertebrates

Published Papers

Halaj, J., M. Mayrhofer, and D. A. Manuwal. 2005. Effects of green-tree retention on the availability of arthropod prey to bark-gleaning birds. Page 356 in C. E. Peterson and D. A. Maguire, editors. Balancing ecosystem values: innovative experiments for sustainable forestry. Proceedings of a conference. USDA Forest Service General Technical Report PNW-GTR-635.

Progar, R. A., T. D. Schowalter, and T. Work.  1999.  Arboreal invertebrate responses to varying levels and patterns of green-tree retention in northwestern forests.  Northwest Science 73 (Special Issue): 77-86.

Progar, R. D., and T. D. Schowalter.  2002.  Canopy arthropod assemblages along a precipitation and latitudinal gradient among Douglas-fir (Pseudotsuga menziesii) forests in the Pacific Northwest of the United States.  Ecography 25:129-138.

Schowalter, T.D., Y. Zhang, and R.A. Progar. 2005. Canopy arthropod
response to density and distribution of green trees retained after partial harvest. Ecological Applications 15:1594-1603.

Halaj, J., C. B. Halpern, and H. Yi. 2008. Responses of litter-dwelling spiders and carabid beetles to varying levels and patterns of green-tree retention. Forest Ecology and Management 255:887-900.

Theses/Dissertations

Work, T. T.  2000.  Edge effects of clearcut harvesting on ground arthropod species composition and predator community structure in old-growth Douglas-fir forests.  Ph.D. dissertation, Oregon State University, Corvallis, OR.

Presentations/Posters

Progar, R. A., and T. D. Schowalter.  1999.  Canopy arthropod communities among Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forests in the Pacific Northwest.  84^th Annual Meeting of the Ecological Society of America, Spokane, WA.

Progar, R. A., and T. D. Schowalter.  1999.  Canopy arthropod communities among Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forests in the Pacific Northwest.  Western Forest Insect Work Conference, Feb 7-10, 2000, Portland, OR.

Schowalter, T. D.  2000.  Connections between the flora and lepidopteran fauna of American Northwest forests.  International Congress of Entomology, Iguassu Falls, Brazil.

Schowalter, T. D.  2001.  Evaluating the ecological, physical and social effects of retaining green trees in harvest units through a Demonstration of Ecosystem Management Options.  2001 Wind River Canopy Crane Research Facility, 7th Annual Science Conference, 21-22 June 2001, Carson, WA.