Jason Rohweder


1998 M.S., Resource Analysis, Saint Mary’s University of Minnesota
1995 B.S., Ecology, Winona State University


Primary Responsibilities/Activities:
I have interdisciplinary expertise in biology, geographical information systems (GIS) and application programming. My work emphasizes landscape ecology and the creation of flexible tools and models to assess species habitat. 


Recent Projects:



Jacobson, R.B., Rohweder, J.J., and DeJager, N.R., 2019, A hydrogeomorphic classification of connectivity of large rivers of the Upper Midwest, United States: U.S. Geological Survey Scientific Investigations Report 2019–5132, 55 p., https://doi.org/10.3133/sir20195132.
Carey JC, Jankowski K, Julian P II, Sethna LR, Thomas PK and Rohweder J (2019) Exploring Silica Stoichiometry on a Large Floodplain Riverscape. Front. Ecol. Evol. 7:346. doi: 10.3389/fevo.2019.00346
De Jager, N., Van Appledorn, M., Fox, T., Rohweder, J., Guyon, L., Meier, A., Cosgriff, R., Vandermyde, B., (2019). Spatially explicit modelling of floodplain forest succession: interactions among flood inundation, forest successional processes, and other disturbances in the Upper Mississippi River floodplain, USA. Ecological Modelling. 405. 10.1016/j.ecolmodel.2019.05.002.
Rohweder, J., Upper Mississippi River Restoration Program Long Term Resource Monitoring element—Spatial data query tool: U.S. Geological Survey Fact Sheet 2018-3077, 2 p.,  https://doi.org/10.3133/fs20183077
De Jager, N.R., Rogala, J.T., Rohweder, J.J., Van Appledorn, M., Bouska, K.L., Houser, Jeffrey, N., and Jankowski, K., 2018, Indicators of ecosystem structure and function for the Upper Mississippi River System: U.S. Geological Survey Open-File Report 2018–1143, 115 p. including 4 appendixes, https://doi.org/10.3133/ofr20181143.
De Jager, Nathan R.; Rohweder, Jason J.; Miranda, Brian R.; Sturtevant, Brian R.; Fox, Timothy J.; Romanski, Mark C. 2017. Modelling moose-forest interactions under different predation scenarios at Isle Royale National Park, USA. Ecological Applications. 27(4): 1317-1337. https://doi.org/10.1002/eap.1526.
Thogmartin, W. E., L. López-Hoffman, J. Rohweder, J. Diffendorfer, R. Drum, D. Semmens, S. Black, I. Caldwell, D. Cotter, P. Drobney, L. L. Jackson, M. Gale, D. Helmers, S. Hilburger, E. Howard, K. Oberhauser, J. Pleasants, B. Semmens, O. Taylor, P. Ward, J. Weltzin, and R. Wiederholt. 2017. Restoring monarch butterfly habitat in the Midwestern U.S.: “All Hands on Deck”. Environmental Research Letters 12:074005; DOI: 10.1088/1748-9326/aa7637
De Jager, N., Rohweder, J., (2017). Changes in aquatic vegetation and floodplain land cover in the Upper Mississippi and Illinois rivers (1989–2000–2010). Environmental Monitoring and Assessment. 189. 10.1007/s10661-017-5774-0.
Crimmins, S., Walleser, L., Hertel, D., McKann, P., Rohweder, J., Thogmartin, W., (2015). Relating mesocarnivore relative abundance to anthropogenic land-use with a hierarchical spatial count model. Ecography. 39. 10.1111/ecog.01179.
De Jager, N., Rohweder, J., Yin, Y., Hoy, E., (2015). The Upper Mississippi River floodscape: Spatial patterns of flood inundation and associated plant community distributions. Applied Vegetation Science. 19. 10.1111/avsc.12189.
Rohweder, J., S. Vacek, S. M. Crimmins, and W. E. Thogmartin. 2015. A case study of assigning conservation value to dispersed habitat units for conservation planning. Journal of Conservation Planning 11:13‒27. http://www.journalconsplanning.org/2015/JCP_11_2_Rohweder.pdf
Rohweder, J.J., De Jager, N.R., and Guntenspergen, G.R., 2012, Anticipated effects of development on habitat fragmentation and movement of mammals into and out of the Schoodic District, Acadia National Park, Maine: U.S. Geological Survey Scientific Investigations Report 2012–5149, 30 p.
De Jager, N.R. and Rohweder, J.J. 2012. Spatial Patterns of aquatic habitat richness in the Upper Mississippi River floodplain, USA. Ecological Indicators 13:275-283.
De Jager, N.R, Rohweder, J.J., and J.C. Nelson. 2011. Past and predicted future changes in the land cover of the Upper Mississippi River floodplain, USA. River Research and Applications doi: 10.1002/rra.1615
De Jager NR and Rohweder JJ. 2011. Spatial scaling of core and dominant forest cover in the Upper Mississippi and Illinois River floodplains, USA . Landscape Ecology. Issn: 0921-2973
Thogmartin, W. E., M. Gallagher, N. Young, J. J. Rohweder, F. Durbian, and M. G. Knutson. 2009. Avian assemblages in the lower Missouri River floodplain. Wetlands 29:552–562.

Thogmartin, W. E., M. Gallagher, N. Young, J. J. Rohweder, and M. G. Knutson. 2009. Factors associated with succession of abandoned agricultural lands along the lower Missouri River. Restoration Ecology 17:290–296.

Thogmartin, W. E., and J. J. Rohweder. 2009. Conservation opportunity assessment for rare birds in the midwestern United States: a private lands imperative. Pages 419–425 in Rich, T.D., C. Arizmendi, D. Demarest and C. Thompson [eds.]. Tundra to Tropics: Connecting Birds, Habitats and People. Proceedings of the 4th International Partners in Flight Conference, 13-16 February 2008. McAllen, TX. Partners in Flight.

Rohweder, J., Rogala, J. T., Johnson, B. L., Anderson, D., Clark, S., Chamberlin, F., and Runyon, K., 2008, Application of wind fetch and wave models for habitat rehabilitation and enhancement projects: U.S. Geological Survey Open-File Report 2008–1200, 43 p.

Thogmartin, W. E., T. J. Fox , J. J. Rohweder, M. G. Knutson, and T. C. Will. 2006. Emerging Technologies: LINK: a land conservation decision support tool. Bulletin of the Ecological Society of America 87(3) [online] URL: http://esapubs.org/bulletin/current /web_pdfs_july/emergingjul06bulletin.pdf

Korschgen, C. E., M. G. Knutson, T. J. Fox, L. Holland- Bartels, H. C. DeHaan, C. H. Theiling, J. J. Rohweder, K. P. Kenow, L. E. Leake, and T. Will. 2005. Natural resource assessment and decision support tools for bird conservation planning. C. John Ralph and Terrell D. Rich, editors.Bird Conservation Implementation and Integration in the Americas: Proceedings of the Third International Partners in Flight Conference 2002. Gen. Tech Rep. PSW-GTR-191. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. Two volumes.

Rohweder, J. J., S. J. Zigler, S. N. Hulse, and T. J. Fox, 2005, Techniques and Methods Book 6, Modeling Techniques, Section C, Decision Support Systems, Chapter 1, Middle Mississippi River Decision Support System: User's Manual: U.S. Geological Survey, Techniques and Methods 6 C-1, 53 p. + CD-ROM.

Fox, T. J., J. J. Rohweder, K. P. Kenow, C. E. Korschgen, and H. C. DeHaan, 2003, Geographic Information System Tools for Conservation Planning: User's Manual: U.S. Geological Survey, Biological Resources Discipline Information and Technology Report USGS/BRD/ITR-2003-0005, 4 p. + Appendixes A-B + CD-ROM.

Rohweder, J. J. The Wisconsin Department of Natural Resources map, combining aerial photography and collected telemetry points, shows the distribution of Common Snapping Turtle populations in the Upper Mississippi River [map]. Scale not given. In: Allan Falconer and Joyce Foresman, editors A System for Survival, GIS and Sustainable Development. Redlands, CA: Environmental Systems Research Institute, 2002, p.17.

Rohweder, J.J. 1997 Common Snapping Turtle Telemetry Points [map]. Scale not given. In: ESRI Map Book; Implementing Concepts of Geography, v 14, Redlands, CA: Environmental Systems Research Institute, 1999, p.36.