Nels Troelstrup

Professional Page

Rank: Professor

Areas of Specialization: Aquatic Ecology, Environmental Biology, Water Quality

Major Responsibilities

Director - Oak Lake Field Station

Instructor - Principles of Ecology (Biol 311), Principles of Ecology Laboratory (Biol 311L), Disturbance Ecology (EnvM 425/525)

Research Leader - Environmental Biology

Curator: South Dakota Aquatic Invertebrate Collection

Current Research Funding

My research team focuses on aquatic community responses to stress, biodiversity of aquatic invertebrates in prairie ecosystems, development and testing of biological monitoring and assessment techniques and evaluation of best management practices to reduce non-point sources of water pollution.

South Dakota Department of Environment and Natural Resources, $351,051. Principal Investigator. Development and testing of an integrated index of biotic integrity for wadable streams of the Northern Glaciated Plains Ecoregion (2010-2013).  

United States Department of Agriculture CAEP Project, $129,014. Co-Principal Investigator. Conservation practices assessment of the Lower Bad River basin (2009-2012).  

South Dakota Game, Fish and Parks, $13,524. Principal Investigator. Development of a statewide collection and database of aquatic macroinvertebrates for South Dakota (2010).  

South Dakota Department of Environment and Natural Resources. $3,683. Principal Investigator. Development of a statewide collection and database of aquatic macroinvertebrates for South Dakota (2010).

Selected Publications

Troelstrup, N.H., Jr. 2010. Reference site selection for monitoring and assessment of intermittent streams in the Northern Glaciated Plains Ecoregion of South Dakota. Final completion report submitted to the South Dakota Department of Natural Resources, Pierre, SD.

Troelstrup, N.H., Jr. 2009. An introduction to the aquatic insects of North America (4th ed). American Entomologist 55(4) (Book Review).

Troelstrup, N.H., Jr. 2008. The need for field biologists in a technophilic world. Proceedings of the South Dakota Academy of Science 87: 9-13.

Troelstrup, N.H., Jr., B. Bleakley and E. Jorgensen. 2005. Fecal coliform strain identification project. Final completion report submitted to the South Dakota Department of Environment and Natural Resources, Pierre, SD.

Troelstrup, N.H., Jr. and J.D. Michalski. 2005. Phase I watershed assessment final report for Lakes Preston, Whitewood, and Thompson Kingsbury and Lake Counties, SD. Final completion report submitted to the South Dakota Department of Environment and Natural Resources, Pierre, SD.  

Troelstrup, N.H., Jr. 2004. A variable environment.  Farm & Home Research 54(3): 22-23.  

Troelstrup, N.H., Jr., R. Gelderman, J. Grewing. 2004. Environment and health – water quality. Pages 4-5 in South Dakota Agriculture and Experiment Station. Livestock development in South Dakota. Frequently asked questions with answers for you and your community.  South Dakota Agriculture Experiment Station, South Dakota State University, Brookings, SD.

Troelstrup, N.H., Jr. and A.L. Gronke. 2000. Assessment of the Big Stone Plant cooling water pond.  Final Project Completion Report submitted to the Ottertail Power Plant, Milbank, SD. 85p.

Troelstrup, N.H., Jr., A.M. Larson and J. Hay. 2000. Phase I watershed assessment final report for Bachelor Creek, Moody County, SD. South Dakota Watershed Protection Program, Division of Financial and Technical Assistance, South Dakota Department of Environment and Natural Resources, Pierre, SD. 122+ p

Troelstrup, Jr., N.H. and G.L. Hergenrader. 1990.  Effect of hydropower peaking flow fluctuations on community structure and feeding guilds of invertebrates colonizing artificial substrates in a large impounded river.  Hydrobiologia 199: 217-228.

Bakker, K.K. and N.H. Troelstrup, Jr. 1998. Birds of the Oak Lake Field Station. South Dakota Bird Notes 50(3): 58-60.

Cahoe, R.D. and N.H. Troelstrup, Jr. 2004. Habitat use and population biology of the northern redbelly snake at Oak Lake Field Station, SD. Proceedings of the South Dakota Academy of Science 83: 137-147.

Crowell, W., N.H. Troelstrup, Jr., L. Queen, J. Perry. 1994. Effects of harvesting on plant communities dominated by Eurasian Watermilfoil in Lake Minnetonka, MN.  Journal of Aquatic Plant Management 32: 56-60.

Hornbach, D.J., J.G. March, T. Deneka, N.H. Troelstrup, Jr. and J.A. Perry. 1996. Factors influencing the distribution and abundance of the endangered winged mapleleaf mussel, Quadrula fragosa in the St. Croix River, Minnesota and Wisconsin. American Midland Naturalist 136: 278-286.

Perry, J.A. and N.H. Troelstrup Jr.  1988.  Whole ecosystem mani­pulation:  A productive avenue for test system research?  Environmen­tal Toxicology and Chemistry 7: 941-951.

Smart, A.J., N.H. Troelstrup, Jr., K.W. Bruns, J.A. Daniel, J.E. Held. 2007. Western snowberry response to fire and goat browsing. Sheep & Goat Research Journal 22: 20-25.

Swift, M.C., N.H. Troelstrup, Jr., N.E. Detenbeck, J.L. Foley.  1993. Large experimental streams in toxicological and ecological research. Journal of the North American Benthological Society 12: 359-366.

Graduate Student Theses

Dozark, K.G. 2010. Sediment effects on aquatic macroinvertebrates in a prairie pothole, Oak Lake, in eastern South Dakota. MS. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 79p.  

Rasmussen, E. 2010. Evaluation of stream assessment protocols for the evaluation of habitat in intermittent, headwater streams. MS. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 79p.  

Vander Vorste, R.W. 2010. Hydroperiod, physicochemistry and seasonal change of macroinvertebrate communities in intermittent prairie streams.  MS. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 121p.  

Rust, J.D. 2006. Establishing baseline data for aquatic resources in national parks of the Northern Great Plains Network.  M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 177p.  

Lorenzen, P.B. 2006. Optimal macroinvertebrate metrics for assessing biotic integrity of intermittent prairie streams. M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 161p.  

Jorgenson, E.A. 2005. Use of antibiotic resistance analysis as a bacterial source tracking technique to facilitate water-resource management in South Dakota. M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 190p.  

Gronke, A.L. 2004. Development of an integrated index of biotic integrity for prairie pothole lakes of eastern South Dakota. M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 205p.  

Kearns, M.S.  2003.  Effectiveness of Project WILD classroom instruction at the middle school level in South Dakota. M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 129p.  

Braskamp, C.W. 2002.  Biogeographic patterns of littoral invertebrate communities and responses to disturbance in prairie lakes.  M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 256p.  

Larson, A.M. 2001. Optimal macroinvertebrate metrics for the assessment of a northern prairie stream.  M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 102p.  

Miller, E.A. 1998. Ornamental traits in Hyalella azteca as indicators of water quality: Implications for biological monitoring.  M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 110p.  

Foley, J.L. 1997. A biological assessment of landscape disturbance potential on a northern prairie pothole lake.  M.S. Thesis, Department of Biology & Microbiology, South Dakota State University, Brookings, SD. 127p.  

Bakker, K.K. 1996. Bird community attributes in critical and non-critical areas within the land-water interface of a prairie lake.  MS Thesis, Department of Biology and Microbiology, South Dakota State University, Brookings, SD. 134p.    

Kraft, C.K. 1996. Mammals inhabiting the land-water interface of Oak Lake as indicators of disturbance. MS  Thesis, Department of Biology and Microbiology, South Dakota State University, Brookings, SD. 181p.