Ph. D. University of Minnesota
B.S. Slippery Rock University
Areas of Interest
Aquatic ecology, invasive species, and fisheries management.
- FW5604 Fisheries Ecology & Management
- FW 8200 Seminar: Exotic Plants and Animals
- FW 8459 Stream and River Ecology
- ESPM 1905 Freshman Seminar: Alien Invasions
- ESPM 3002 Exotic Plants and Animals
- WRS 8581 Research and Ethics in WRS
My research interests are in applied and basic aquatic ecology with an emphasis on trophic relations, littoral zones, and streams. I have a wide range of research interests in fisheries ecology and believe a mix of descriptive and manipulative research is essential. Much of my work is interdisciplinary and has involved collaboration with other researchers.
I am interested in basic and applied aspects of herbivory on freshwater macrophytes by invertebrates. This work includes applied research on potential biological control agents of nuisance weeds such as Eurasian watermilfoil and more basic research on the role of secondary chemicals in the use of macrophytes by aquatic invertebrates. My students and I have examined secondary chemicals as feeding deterrents to generalist herbivores and as oviposition attractants to specialist herbivores that may be useful biological control agents. More recently we have been examing the ecology of invasive aquatic plants such as milfoil and curlyleaf pondweed. This includes work on effects of large scale treatments to control invasive plants, models to predict invasion and the ecology of propagules such as seeds and turions.
I am also interested in trophic relations of fish. For example, at what spatial scale are stream fish food limited? Does fish predation limit populations of watermilfoil control agents?
Lastly, I am interested in stream fish and invertebrates, especially as these relate to density, growth, and feeding relations. I am particularly interested in research linking individual fish responses to population level responses. Recent applied work is aimed at determining the effects of riparian logging practices on stream habitat, invertebrates and fish population.
Knopik, J. M and R. M. Newman. 2018. Transplanting aquatic macrophytes to restore the littoral community of a eutrophic lake after the removal of common carp. Lake and Reservoir Management 34(4): 365–375. https://www.tandfonline.com/doi/full/10.1080/10402381.2018.1477885
Marko*, M. D. and R. M. Newman. 2017. Fecundity of a native herbivore on its native and exotic host plants and relationship to plant chemistry. Aquatic Invasions 12 (3): 355-369. http://www.aquaticinvasions.net/2017/AI_2017_Marko_Newman.pdf
- Moody, M.L. N. Palomino, P. Weyl, J. Coetzee, R.M. Newman, X. Liu, X. Xu, R.A. Thum.. 2016. Unraveling the biogeographic history of the Eurasian watermilfoil invasion in North America. American Journal of Botany 103(4):1-10. . doi: 10.3732/ajb.1500476
- Weyl, P. S. R., R. A. Thum, M. L. Moody, R. M. Newman, and J. A. Coetzee. 2016. Was Myriophyllum spicatum L. (Haloragaceae) recently introduced to South Africa from Eurasia? Aquatic Botany 128:7-12.
- Baker, L.A. and R.M. Newman. 2014. Managing the biological, economic, and social aspects of sustainability of lake ecosystems. Pages 76-86 in S. Ahuja, Comprehensive Water Quality and Purification, Volume 4, Elsevier.
- Newman, R. M. and R.D. Rotjan. 2013. Re-examining the fundamentals of grazing: freshwater, marine and terrestrial similarities and contrasts (commentary on Burkepile 2013). Oikos 122: 317-320. doi: 10.1111/j.1600-0706.2012.21045.x
- Johnson*, J.A., A. R. Jones* and R.M. Newman. 2012. Evaluation of lakewide, early season herbicide treatments for controlling invasive curlyleaf pondweed (Potamogeton crispus) in Minnesota lakes. Lake and Reservoir Management 28(4): 346-363. http://dx.doi.org/10.1080/07438141.2012.744782
- Jones*, A.R., J.A. Johnson* and R.M. Newman. 2012. Effects of repeated, early season, herbicide treatments of curlyleaf pondweed on native macrophyte assemblages in Minnesota lakes. Lake and Reservoir Management 28(4): 364-374.
- Chizinski, C. J., B. Vondracek, C. R. Blinn, R M. Newman, D. M. Atuke*, K. Fredricks, N. A. Hemstad*, E. Merten*, and N. Schlesser*. 2010. The influence of partial timber harvesting in riparian buffers on macroinvertebrate and fish communities in small streams in Minnesota, USA. Forest Ecology and Management 259(10): 1946-1958.
- Newman, R.M. 2004. Invited Review – Biological control of Eurasian watermilfoil by aquatic insects: basic insights from an applied problem. Archiv für Hydrobiologie 159 (2): 145-184.