 |
Dr. David Richards
Senior Research Ecologist
drichards@ecoanalysts.com
Research Interests: trophic level impacts of invasive species; competition; food webs; population and metapopulation dynamics; population viability analysis of threatened and endangered species; water quality issues; stream and mountain lake ecology; ecological economics and sustainability
Education
-
Ph.D. 2004 Montana State University Biology (Dept. Ecology) with minor in Statistics
-
M. S. 1996 Montana State University Entomology and Mountain Research Center
-
B. S. 1987 Montana State University Biology, Fish and Wildlife Management Option
-
A. S. 1984 Flathead Valley C.C. Biology
Professional Experiences
- 2006-present Affiliate Assistant Professor, Land Resources and Environmental Sciences, Montana State University , Bozeman , MT
- 1999-present Senior Research Ecologist/Director, EcoAnalysts Center for Aquatic Studies/ EcoAnalysts Research Lab, Bozeman , Montana
- 1998-1999 Research Specialist, Cornell University , Ithaca , New York
- 1996-1998 Biologist, USFWS/Puerto Rico Dept. Natural Resources, San Juan , Puerto Rico
- 1993-1996 Co-Principal Investigator and Researcher, Dept. Entomology, Montana State University, Bozeman , MT
- 1983-1993 Backcountry Ranger and Trail Crew Leader, Northern Rockies, U.S. Forest Service and National Park Service
Awards, Achievements, and Certificates
- 2005 PADI Open Water Scuba Certification
- 1983-2004 Red Cross Advanced First Aid and CPR
- 1993 Montana Board of Regents Academic Scholarship
- 1993 Outstanding Biology Student of the Year, Flathead Valley Community College
- 1984 Wilderness Skills Workshop Award
Professional and Public Service Activities
- 2006-present Topic-Editor
- Encyclopedia of Earth, http://www.eoearth.org/
- 2001–present Peer-review referee:
- American Malacological Society Bulletin
- Journal of North American Benthological Society
- Western North American Naturalist
- Southwest Naturalist
- Biological Invasions
- 2001-2005 Initiated and organized 1 st , 2 nd , 3 rd , 4 th , and 5th Annual Conference on New Zealand Mudsnail in Western USA, July 9-10, 2001, August 26-28, 2002, August 26-27, 2003, 2005, Bozeman, MT and June 2007, Davis, CA
- 2001-2005 Co-webmaster. The New Zealand mudsnail in the western USA : http://www.esg.montana.edu/aim/mollusca/nzms/
- Field and classroom lecturer. Stream Ecology, Science Teachers of the Rockies, Montana State University ; and local grade schools
- Organizer and referee. Montana Science Olympiad, Montana State University
Professional Societies, Conservation Organizations, and Committees
- American Malacological Society
- American Fisheries Society
- Defenders of Wildlife
- Ecological Society of America
- Freshwater Mollusk Conservation Society
- Montana Academy of Science
- New Zealand Mudsnail Management and Control Plan Team
- North American Benthological Society
- PADI Diving Society
- Snake River Snail Conservation Plan Technical Committee
- Society for Conservation Biology
- Working Group for Ecological Economics and Sustainability Science
- Western Regional Panel Aquatic Nuisance Species
Publications
- Richards, D. C., T. Arrington, S. Sing, and B. L. Kerans. In preparation. Competition and coexistence between
an invasive aquatic snail and its threatened native congener. Richards, D. C. and T, Arrington. In preparation. Spatial and environmental relationships of three snail taxa in a freshwater spring: with estimates of their abundance.
- Richards, D. C., C. M. Falter, G. T. Lester, and R. Myers. In preparation. Mollusk survey of Hells Canyon reservoirs and free flowing Snake River, Idaho and Oregon, USA: with focus on rare and listed taxa, including a newly described Taylorconcha sp.
- Richards, D. C., P. O'Connell, and D. C. Shinn. In preparation. Growth Rates of the threatened Bliss Rapids Snail, Taylorconcha serpenticola and the invasive New Zealand mudsnail Potamopyrgus antipodarum at six temperatures.
- Richards, D. C. and T. Arrington. Submitted. Evaluation of Threatened Bliss Rapids Snail, Taylorconcha serpenticola susceptibility to exposure: potential impact of ‘load following' from hydroelectric facilities. American Malacological Society Bulletin.
- Richards, D. C. In review. Some life history studies of the threatened Bliss Rapids snail and invasive New Zealand mudsnail. Western North American Naturalist.
- Richards, D. C. 2004. Competition between the threatened Bliss Rapids Snail, Taylorconcha serpenticola and the invader New Zealand Mud Snail, Potamopyrgus antipodarum. Ph D. Dissertation. Montana State University, Bozeman, Montana. 175 pp.
- Richards, D. C. and D. C. Shinn. 2004. Intraspecific competition and development of size structure in the invasive snail, Potamopyrgus antipodarum. American Malacological Society Bulletin. 19. 1.2.
- Richards, D. C., P. O'Connell, and D. C. Shinn. 2004. Simple control method for the New Zealand mudsnail, Potamopyrgus antipodarum . Journal North American Fisheries Management. 24:114-117.
- Richards, D. C., L. D. Cazier, and G. T. Lester. 2001. Spatial distribution of three snail species, including the invader Potamopyrgus antipodarum , in a freshwater spring. Western North American Naturalist.61: 375-380.
- Richards, D. C., M. Rolston, and F. V. Dunkel. 2000. Comparison of salmonfly densities upstream and downstream of Ennis Reservoir. Intermountain Journal of Sciences. Vol 1:1-7.
- Dunkel F. V. and D. C. Richards. 1998. Effect of an azadirachtin formulation of six nontarget aquatic macroinvertebrates. Environmental Entomology. Vol. 27. no. 3. pp 667-674.
- Richards, D. C. 1996. The use of aquatic macroinvertebrates as water quality indicators in mountain streams of Montana. Masters thesis. Montana State University. Bozeman, MT. 199 pp.
- Sriharan, S., A. Wright, P. Singh, F. V. Dunkel, D. C. Richards, W. Bertsch, and C. Wells. 1994. Insecticidal activity of floral and root extracts of Tagetes minuta and Tagetes patula (marigold) against the Mexican bean weevil, ( Zabrotes subfasciatus ), a non-target fish ( Gambusia affinis ), and the predatory warehouse pirate bug ( Xylocoris flavipes ). in D. L. Weigmann, ed. New directions in pesticide research, development, management, and policy. Proc. Fourth National Conference on Pesticides. Blacksburg, Virginia, November 1-3, 1993. pp. 542-556.
- Weaver, D.K, F.V. Dunkel, L. Van Puyvelde , D.C. Richards, and G.W. Fitzgerald. 1996. Toxicity ad protectant potential of the essential oil of Tetradenia riparia (Lamiales: Lamiaceae) against Zabrotes subfasciatus (Coleoptera: Bruchidae) infesting dried pinto beans (Fabales: Leguminosae) J. App. Entomology. pp. 126-131.
Technical Reports
- Richards, D. C., C. M. Falter, and K. Steinhorst. 2006. Status review of the Bliss Rapids snail, Taylorconcha serpenticola in the Mid-Snake River, Idaho. 170pp.
- Richards, D. C., T. Veldhuizen, and G. Noda. 2004. The invasive New Zealand mudsnail reaches the Central Valley Watershed. Pices. Vol. 32. (4): 4-6.
- Richards, D. C., C. M. Falter, G. T. Lester, and R. Myers. 2005. Listed Mollusks. Responses to FERC Additional Information Request AR-2. Hells Canyon Project. FERC No. P-1971-079. 180 pp.
- Richards, D. C. 2004. Population dynamics of Taylorconcha serpenticola and Potamopyrgus antipodarum at Banbury Springs outlet: 1999 to 2004 using time series analysis. EcoAnalysts Inc. Moscow, Idaho. 16pp.
- Richards, D. C. and G. T. Lester. 2003. Survey of the invasive New Zealand mudsnail, Potamopyrgus antipodarum in the Silver Creek drainage in and around The Nature Conservancy's Silver Creek Preserve, Idaho, USA . EcoAnalysts Inc, Moscow, Idaho. 19pp.
- Richards, D. C., Gustafson, D.L., Kerans, B.L., and C. Cada. 2002. New Zealand mudsnail in the western USA. Web site. www2.montana.edu/nzms
- Richards, D. C. and G. T. Lester. 2002. Survey for the endangered Pyrgulopsis idahoensis at the Cove Recreation Site, CJ Strike Reservoir. Prepared for North Wind, Inc. Idaho Falls , Idaho. EcoAnalysts Inc., Moscow, Idaho. 12pp.
- Richards, D. C. 2002. The New Zealand Mudsnail invades the Western United States. Aquatic Nuisance Species Digest. Vol. 4. (4): 42-44.
- Richards, D. C. and L. D. Cazier Shinn. 2001. Intraspecific and interspecific competition between Taylorconcha serpenticola and Potam opyrgus antipodarum under laboratory conditions. EcoAnalysts Inc. Report. 14pp.
- Richards, D. C., P. O'Connell, and L. D.Cazier Shinn. 2001. Growth rates of the Bliss Rapids Snail, Taylorconcha serpenticola and the New Zealand mudsnail, Potamopyrgus antipodarum at six temperatures. EcoAnalysts Inc. Report.10pp.
- Richards, D. C. and L.D.Cazier Shinn. 2001. Distribution and abundance of the Bliss Rapids Snail, Taylorconcha serpenticola in Banbury Springs in relation to two hydrobiid snail species and eight environmental gradients. EcoAnalysts Inc. Report. 23pp.
- Richards, D. C. and L.D. Cazier Shinn. 2001. Taylorconcha serpenticola densities at Banbury Springs 1999-2001. EcoAnalysts Inc. Report. 16pp.
- Richards, D. C. and L.D.Cazier Shinn. 2001. Densities of Taylorconcha serpenticola and Potamopyrgus antipodarum in cobble habitat at the outlet of Banbury Springs 1999-2001. EcoAnalysts Inc. Report. 11pp.
- Richards, D. C., L. D. Cazier, and G. T. Lester. 2001. Spatial distribution of three snail species, including the invader Potamopyrgus antipodarum, in Banbury Springs, Snake River Drainage, Southern Idaho, USA. EcoAnalysts Inc. Report.19 pp.
- Richards, D. C. and D. L. Gustafson. 2001. Compilation workbook for Mollusk Identification Workshop: New Zealand mudsnail in Western USA . First Annual Conference. July 9 and 10, 2001. Montana State University, Bozeman , MT.
- Richards, D. C. and G. T. Lester. 2000. Intraspecific competition of Potamopyrgus antipodarum (Gray) at different densities for a limiting resource under laboratory conditions. EcoAnalysts Inc. Report. 22 pp.
- Richards, D. C. and G. T. Lester. 2000. Growth rates of the New Zealand Mud Snail, Potamopyrgus antipodarum (Gray) at five temperatures. EcoAnalysts Inc. Report.19 pp.
- Richards, D. C. and G. T. Lester. 2000. Competition between two freshwater snail species: the invasive New Zealand Mud Snail, Potamopyrgus antipodarum and the native, threatened Bliss Rapids Snail, Taylorconcha serpenticola in an enclosure study, 1999 and 2000. EcoAnalysts Inc. Report. 25 pp.
- Richards, D. C. and G. T. Lester. 2000. Comparison of the number of Potamopyrgus antipodarum neonates produced seasonally, between habitats, and in two freshwater springs, Idaho and Montana: a preliminary investigation. EcoAnalysts Inc. Report. 18 pp.
- Richards, D. C. and G. T. Lester. 1999. Seasonal changes in densities of three snail species at Banbury Springs, 1999. EcoAnalysts Inc. Moscow, Idaho. 9 pp.
- Richards, D. C. and G. T. Lester. 1999. Exploratory population analysis of the Banbury Limpet ( Lanx sp. undescribed) colony in Banbury Springs, Snake River drainage, southern Idaho. EcoAnalysts Inc. Moscow, Idaho. 7 pp.
- Richards, D. C. and G. T. Lester. 1999. Evidence for competition between two freshwater snail species, the exotic, biological invader Potamopyrgus antipodarum and the native, threatened Taylorconcha serpenticola in an enclosure study. EcoAnalysts Inc. Moscow, Idaho. 30 pp.
- Richards, D. C. and G. T. Lester. 1999. Abiotic and biotic factors influencing the distribution and abundance of three species of freshwater snails in Banbury Springs. EcoAnalysts Inc. 17 pp.
- Richards, D. C. 1998. Assessment of the 1997 release of captive-reared Hispaniola amazons ( Amazona ventralis ) in the Dominican Republic as related to their training at the parent facility training cage (PFTC), Rio Abajo Aviary, Puerto Rico . Report to Puerto Rico Department of Natural Resources and Environment. San Juan . 14 pp.
- Richards, D. C. 1996. Relationship of the number of taxa and the number of organisms in macroinvertebrate samples from mountain streams of Montana . Report to State of Montana , Water Quality Division Department of Environmental Quality. Helena , MT. 5pp.
- Richards, D. C. 1996. Effects of an unbiased 300 organism subsample on macroinvertebrate samples from mountain streams of Montana . Report to State of Montana , Water Quality Division Department of Environmental Quality. Helena , MT 12pp.
- Shannon, J. P., E. P. Benenati, H. Kloeppel, and D. C. Richards. 2003. Monitoring the aquatic food base in the Colorado River, Arizona during June and October 2002. Annual Report. Grand Canyon Monitoring and Research Center . USGS. Cooperative Agreement-02WRAG0028.
- Kern, A., L. D. Cazier, G. T. Lester, and D. C. Richards. 2000. Determining genetic diversity within and between spatially isolated populations of the native Threatened freshwater snail, Taylorconcha serpenticola in the mid-Snake River drainage, Idaho. EcoAnalysts Inc. Report. 4pp.
- Marcus, W. A., J. A. Stoughton, S. C. Ladd, and D. C. Richards. 1995. Trace metal concentrations in sediments and their ecological impacts in Soda Butte Creek , Montana and Wyoming . In: Meyer G (ed), 1995 Field conference guidebook, friends of the Pleistocene-Rocky Mountain cell: Late Pleistocene-Holocene evolution of the northeastern Yellowstone landscape, Middlebury College, Vermont, 9 pp.
Invited Presentations
- Richards, D. C. and T. Arrington. 2006. Empirical estimates of extinction and colonization rates of the threatened Bliss Rapids Snail for use in metapopulation viability analyses. Presented Paper. Snake River Snail Technical Committee Quarterly Meeting. December 12.
- Richards, D. C., C. Smith, and B. Marshall. 2006. Effects of New Zealand mudsnail on water quality bioassessment metrics. Presented paper. California Water Quality Bioassessment Annual Meeting. Davis California. November 28-29th.
- Richards, D. C., C. M. Falter, G. T. Lester, and R. Myers. 2005. Mollusk survey and basic ecological studies in Hells Canyon, Snake River , USA . Presented paper. 38 th Annual Western Society of Malacologists Conference. Asilomar, Pacific Grove, CA. June 26th -30th.
- Richards, D. C. ,B. L. Kerans, G. T. Lester, and D. C. Shinn. 2004. Competition between a threatened and invasive snail in a freshwater spring. Presented paper. North American Benthological Society Annual Meeting. Vancouver, BC.
- Richards, D. C. 2004. The invasive New Zealand mudsnail: case study. Invited speaker. Western Division American Fisheries Society Annual Meeting. Salt Lake City, Utah. March 1-4.
- Richards, D. C. 2004. Conducted New Zealand mudsnail identification workshop. Western Division American Fisheries Society Annual Meeting. Salt Lake City, Utah. March 1-4.
- Richards, D. C. and D. C. Shinn. 2003. Spatial distribution of Bliss Rapids Snail and New Zealand mudsnail in a freshwater spring, Idaho, USA . Presented paper. North American Benthological Society Annual Meeting. Athens GA.
- Richards, D. C. and D. C. Shinn. 2003. Intra and interspecific competition between Bliss Rapids Snail and New Zealand mudsnail. Presented paper. Society for Conservation Biology Annual Meeting. Duluth, MN.
- Richards, D. C. 2002. The New Zealand Mudsnail in the Western USA . 2002. Presented paper. American Malacological Society Annual Conference. Charleston, SC. August 2002.
- Richards, D. C. 2002. The New Zealand Mudsnail in the Western USA . Presented paper. Orvis Fishing Guides National Rendezvous, Cody, Wyoming . April 12.
- Richards, D. C. 2002. New Zealand mudsnail in the western USA. Invited paper. Western Regional Panel on Aquatic Nuisance Species Annual Meeting. Las Vegas, Nevada. January 9-10.
- Richards, D. C. 2001. The New Zealand mudsnail in the western USA . Presented paper. New Zealand mudsnail in Western USA . First Annual Conference. July 9 and 10, 2001. Montana State University , Bozeman, MT.
- Richards, D. C. 2001. Competition between the invader Potamopyrgus antipodarum and a threatened snail species in the Snake River. Presented paper. Aquatic Ecology Group, Montana State University, Bozeman, Montana.
- Richards, D. C., G. T. Lester, and D. Cazier. 1999. Basic ecological findings on the New Zealand mudsnail (Potamopyrgus antipodarum ) in the Middle-Snake River and the Thousand Springs Complex, Southern Idaho . Presented paper. Seventh Annual Yellowstone National Park Symposium on Exotic Species in Yellowstone . October 11-12, 1999.
- Richards, D. C., G. T. Lester, and D. Cazier. 1999. The invasion of the New Zealand mud snail (Potamopyrgus antipodarum ) in the Middle Snake River: potential impacts. Presented paper. Ninth Annual Nonpoint Source Water Quality Workshop. Boise, Idaho.
- Richards, D. C., M. Rolston, and F. V. Dunkel. 1997. The distribution and abundance of Pteronarcys californica in the Madison River, MT. Presented paper. Montana Chapter of American Fisheries Society Annual Meetings. Bozeman , MT.
- Richards, D. C. 1996. Macroinvertebrates as water quality indicators in Soda Butte Creek. Presented paper. The Third Interagency Conference on the Soda Butte Creek Watershed. Yellowstone National Park, September 10-11, 1996.
- Richards, D. C., M. Rolston, and F.V. Dunkel. 1995. The distribution and abundance of Pteronarcys californica in the Madison River, MT. Poster presentation. Entomological Society of America . Las Vegas, Nevada.
- Richards, D. C. and R. Bukantis. 1995. The use of aquatic insects as indicators of water quality in mountain streams in Montana using modified Rapid Bioassessment Protocols. Presented paper. Montana Academy of Sciences; Clark Fork Symposium, Missoula , MT.
- Richards, D. C. and F. V. Dunkel. 1994. The use of aquatic insects as indicators of water quality in mountain streams in Montana. Poster presentation. Entomological Society of America . Dallas Texas.
- Richards, D.C., F.V. DunkeL, L. VanPuyvelde, and S. Sriharan. 1992. Effect of insecticidal plant extracts on the pirate bug, Xylocoris flavipes. Poster presentation. Entomological Society of America. Baltimore, MD.
- Rodriquez , D.C. , F.V. Dunkel , D.C. Richards, and D.K Weaver. 1992. Fumigative, repellent, and oviposition deterrent properties of mountain sagebrush, Artemesia tridentata, for stored grain insects. Poster presentation. Entomological Society of America. Baltimore , MD.
|
|