Jason Rohweder
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:
- Web mapping application development
- West Newton Chute Native Mussel Story Map
- Upper Mississippi River System - Systemic Spatial Data Viewer
- Upper Mississippi River Restoration - Long Term Resource Monitoring element - Spatial Data Query Tool
- Upper Mississippi River System - Historic Map Viewer
- Isle Royale National Park - Modelling spatial and temporal variability in browsing by moose under varying predation scenarios
- Tool and data development in support of the Monarch Conservation Science Partnership
- Monarch Conservation Science Partnership Map Viewer and Tools
- Management Unit Prioritization Tools
- Anticipated Effects of Development on Habitat Fragmentation and Movement of Mammals Into and Out of the Schoodic District, Acadia National Park, Maine
- Application of Wind Fetch and Wave Models for Habitat Rehabilitation and Enhancement Projects
- 2012 update
- LINK: ArcGIS Tools for Conservation Planning
Education and Certifications
1998 M.S., Resource Analysis, Saint Mary’s University of Minnesota
1995 B.S., Ecology, Winona State University
Science and Products
Filter Total Items: 18
No Result Found
Filter Total Items: 37
Anticipated effects of development on habitat fragmentation and movement of mammals into and out of the Schoodic District, Acadia National Park, Maine Anticipated effects of development on habitat fragmentation and movement of mammals into and out of the Schoodic District, Acadia National Park, Maine
Most national parks interact with adjacent lands because their boundaries fail to encompass all regional habitats, species pools, and migration routes. Activities planned for adjacent lands can have adverse effects on park resources and visitor experiences. For example, fragmentation of adjacent habitat into smaller and more isolated remnants may influence the suitability of park habitat...
Authors
Jason J. Rohweder, Nathan De Jager, Glenn Guntenspergen
Exploring relationships among land ownership, agricultural land use, and native fish species richness in the Upper Mississippi River Basin Exploring relationships among land ownership, agricultural land use, and native fish species richness in the Upper Mississippi River Basin
The general effects of agriculture on in-stream fish communities in the Upper Midwestern United States have been well studied for nearly three decades (Karr et al. 1985; Nerbonne and Vondracek 1991; Zimmerman et al. 2001; Goldstein and Meador 2005). Specific impacts include: lowered water levels, sediment loading and nutrient enrichment, loss of riparian habitat, changes to channel...
Authors
Nathan De Jager, Jason Rohweder
Spatial scaling of core and dominant forest cover in the Upper Mississippi and Illinois River floodplains, USA Spatial scaling of core and dominant forest cover in the Upper Mississippi and Illinois River floodplains, USA
Different organisms respond to spatial structure in different terms and across different spatial scales. As a consequence, efforts to reverse habitat loss and fragmentation through strategic habitat restoration ought to account for the different habitat density and scale requirements of various taxonomic groups. Here, we estimated the local density of floodplain forest surrounding each...
Authors
Nathan De Jager, Jason J. Rohweder
Spatial patterns of aquatic habitat richness in the Upper Mississippi River floodplain, USA Spatial patterns of aquatic habitat richness in the Upper Mississippi River floodplain, USA
Interactions among hydrology and geomorphology create shifting mosaics of aquatic habitat patches in large river floodplains (e.g., main and side channels, floodplain lakes, and shallow backwater areas) and the connectivity among these habitat patches underpins high levels of biotic diversity and productivity. However, the diversity and connectivity among the habitats of most floodplain...
Authors
Nathan De Jager, Jason J. Rohweder
A Tool for Prioritizing Management Units at Morris Wetland Management District A Tool for Prioritizing Management Units at Morris Wetland Management District
No abstract available.
Authors
Jason Rohweder, Sara Vacek, Wayne Thogmartin
Factors associated with succession of abandoned agricultural lands along the Lower Missouri River, U.S.A Factors associated with succession of abandoned agricultural lands along the Lower Missouri River, U.S.A
The 1993 flood of the Missouri River led to the abandonment of agriculture on considerable land in the floodplain. This abandonment led to a restoration opportunity for the U.S. Federal Government, purchasing those lands being sold by farmers. Restoration of this floodplain is complicated, however, by an imperfect understanding of its past environmental and vegetative conditions. We...
Authors
W.E. Thogmartin, M. Gallagher, N. Young, J.J. Rohweder, M. Knutson
Avian assemblages in the lower Missouri river floodplain Avian assemblages in the lower Missouri river floodplain
Floodplain habitat provides important migration and breeding habitat for birds in the midwestern United States. However, few studies have examined how the avian assemblage changes with different stages of floodplain forest succession in the midwestern United States. In spring and summer from 2002 to 2004, we conducted 839 point counts in wet prairie/forbs fields, 547 point counts in...
Authors
W.E. Thogmartin, M. Gallagher, N. Young, J.J. Rohweder, F. Durbian, M. Knutson
Application of Wind Fetch and Wave Models for Habitat Rehabilitation and Enhancement Projects Application of Wind Fetch and Wave Models for Habitat Rehabilitation and Enhancement Projects
Models based upon coastal engineering equations have been developed to quantify wind fetch length and several physical wave characteristics including significant height, length, peak period, maximum orbital velocity, and shear stress. These models, developed using Environmental Systems Research Institute's ArcGIS 9.2 Geographic Information System platform, were used to quantify...
Authors
Jason Rohweder, James Rogala, Barry Johnson, Dennis Anderson, Steve Clark, Ferris Chamberlin, Kip Runyon
Power to detect trend in short-term time series of bird abundance Power to detect trend in short-term time series of bird abundance
Avian point counts for population monitoring are often collected over a short timespan (e.g., 3-5 years). We examined whether power was adequate (power ???0.80) in short-duration studies to warrant the calculation of trend estimates. We modeled power to detect trends in abundance indices of eight bird species occurring across three floodplain habitats (wet prairie, early successional...
Authors
W.E. Thogmartin, B. R. Gray, M. Gallagher, N. Young, J.J. Rohweder, M. Knutson
Middle Mississippi River decision support system: user's manual Middle Mississippi River decision support system: user's manual
This user's manual describes the Middle Mississippi River Decision Support System (MMRDSS) and gives detailed examples on its use. The MMRDSS provides a framework to assist decision makers regarding natural resource issues in the Middle Mississippi River floodplain. The MMRDSS is designed to provide users with a spatially explicit tool for tasks, such as inventorying existing knowledge...
Authors
Jason J. Rohweder, Steven Zigler, Timothy Fox, Steven Hulse
Submersed Aquatic Vegetation Modeling Output Online Submersed Aquatic Vegetation Modeling Output Online
Introduction The ability to predict the distribution of submersed aquatic vegetation in the Upper Mississippi River on the basis of physical or chemical variables is useful to resource managers. Wildlife managers have a keen interest in advanced estimates of food quantity such as American wildcelery (Vallisneria americana) population status to give out more informed advisories to hunters...
Authors
Yao Yin, Jim Rogala, John Sullivan, Jason Rohweder
Geographic Information System Tools for Conservation Planning Geographic Information System Tools for Conservation Planning
No abstract available.
Authors
Melinda Knutson, Jason Rohweder
Science and Products
Filter Total Items: 18
No Result Found
Filter Total Items: 37
Anticipated effects of development on habitat fragmentation and movement of mammals into and out of the Schoodic District, Acadia National Park, Maine Anticipated effects of development on habitat fragmentation and movement of mammals into and out of the Schoodic District, Acadia National Park, Maine
Most national parks interact with adjacent lands because their boundaries fail to encompass all regional habitats, species pools, and migration routes. Activities planned for adjacent lands can have adverse effects on park resources and visitor experiences. For example, fragmentation of adjacent habitat into smaller and more isolated remnants may influence the suitability of park habitat...
Authors
Jason J. Rohweder, Nathan De Jager, Glenn Guntenspergen
Exploring relationships among land ownership, agricultural land use, and native fish species richness in the Upper Mississippi River Basin Exploring relationships among land ownership, agricultural land use, and native fish species richness in the Upper Mississippi River Basin
The general effects of agriculture on in-stream fish communities in the Upper Midwestern United States have been well studied for nearly three decades (Karr et al. 1985; Nerbonne and Vondracek 1991; Zimmerman et al. 2001; Goldstein and Meador 2005). Specific impacts include: lowered water levels, sediment loading and nutrient enrichment, loss of riparian habitat, changes to channel...
Authors
Nathan De Jager, Jason Rohweder
Spatial scaling of core and dominant forest cover in the Upper Mississippi and Illinois River floodplains, USA Spatial scaling of core and dominant forest cover in the Upper Mississippi and Illinois River floodplains, USA
Different organisms respond to spatial structure in different terms and across different spatial scales. As a consequence, efforts to reverse habitat loss and fragmentation through strategic habitat restoration ought to account for the different habitat density and scale requirements of various taxonomic groups. Here, we estimated the local density of floodplain forest surrounding each...
Authors
Nathan De Jager, Jason J. Rohweder
Spatial patterns of aquatic habitat richness in the Upper Mississippi River floodplain, USA Spatial patterns of aquatic habitat richness in the Upper Mississippi River floodplain, USA
Interactions among hydrology and geomorphology create shifting mosaics of aquatic habitat patches in large river floodplains (e.g., main and side channels, floodplain lakes, and shallow backwater areas) and the connectivity among these habitat patches underpins high levels of biotic diversity and productivity. However, the diversity and connectivity among the habitats of most floodplain...
Authors
Nathan De Jager, Jason J. Rohweder
A Tool for Prioritizing Management Units at Morris Wetland Management District A Tool for Prioritizing Management Units at Morris Wetland Management District
No abstract available.
Authors
Jason Rohweder, Sara Vacek, Wayne Thogmartin
Factors associated with succession of abandoned agricultural lands along the Lower Missouri River, U.S.A Factors associated with succession of abandoned agricultural lands along the Lower Missouri River, U.S.A
The 1993 flood of the Missouri River led to the abandonment of agriculture on considerable land in the floodplain. This abandonment led to a restoration opportunity for the U.S. Federal Government, purchasing those lands being sold by farmers. Restoration of this floodplain is complicated, however, by an imperfect understanding of its past environmental and vegetative conditions. We...
Authors
W.E. Thogmartin, M. Gallagher, N. Young, J.J. Rohweder, M. Knutson
Avian assemblages in the lower Missouri river floodplain Avian assemblages in the lower Missouri river floodplain
Floodplain habitat provides important migration and breeding habitat for birds in the midwestern United States. However, few studies have examined how the avian assemblage changes with different stages of floodplain forest succession in the midwestern United States. In spring and summer from 2002 to 2004, we conducted 839 point counts in wet prairie/forbs fields, 547 point counts in...
Authors
W.E. Thogmartin, M. Gallagher, N. Young, J.J. Rohweder, F. Durbian, M. Knutson
Application of Wind Fetch and Wave Models for Habitat Rehabilitation and Enhancement Projects Application of Wind Fetch and Wave Models for Habitat Rehabilitation and Enhancement Projects
Models based upon coastal engineering equations have been developed to quantify wind fetch length and several physical wave characteristics including significant height, length, peak period, maximum orbital velocity, and shear stress. These models, developed using Environmental Systems Research Institute's ArcGIS 9.2 Geographic Information System platform, were used to quantify...
Authors
Jason Rohweder, James Rogala, Barry Johnson, Dennis Anderson, Steve Clark, Ferris Chamberlin, Kip Runyon
Power to detect trend in short-term time series of bird abundance Power to detect trend in short-term time series of bird abundance
Avian point counts for population monitoring are often collected over a short timespan (e.g., 3-5 years). We examined whether power was adequate (power ???0.80) in short-duration studies to warrant the calculation of trend estimates. We modeled power to detect trends in abundance indices of eight bird species occurring across three floodplain habitats (wet prairie, early successional...
Authors
W.E. Thogmartin, B. R. Gray, M. Gallagher, N. Young, J.J. Rohweder, M. Knutson
Middle Mississippi River decision support system: user's manual Middle Mississippi River decision support system: user's manual
This user's manual describes the Middle Mississippi River Decision Support System (MMRDSS) and gives detailed examples on its use. The MMRDSS provides a framework to assist decision makers regarding natural resource issues in the Middle Mississippi River floodplain. The MMRDSS is designed to provide users with a spatially explicit tool for tasks, such as inventorying existing knowledge...
Authors
Jason J. Rohweder, Steven Zigler, Timothy Fox, Steven Hulse
Submersed Aquatic Vegetation Modeling Output Online Submersed Aquatic Vegetation Modeling Output Online
Introduction The ability to predict the distribution of submersed aquatic vegetation in the Upper Mississippi River on the basis of physical or chemical variables is useful to resource managers. Wildlife managers have a keen interest in advanced estimates of food quantity such as American wildcelery (Vallisneria americana) population status to give out more informed advisories to hunters...
Authors
Yao Yin, Jim Rogala, John Sullivan, Jason Rohweder
Geographic Information System Tools for Conservation Planning Geographic Information System Tools for Conservation Planning
No abstract available.
Authors
Melinda Knutson, Jason Rohweder