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
Segment-scale classification, large rivers of the Upper Midwest United States Segment-scale classification, large rivers of the Upper Midwest United States
This dataset is part of a multi-scale assessment and classification for segments of 15 rivers of the Upper Midwest United States that meet various criteria for largeness. All rivers are tributary to the Mississippi River system. The 11,600 kilometers (km) that qualified as large were parsed into 10-kilometer-long segments and classified by major alterations (free-flowing, navigation...
2010 Monarch Relevant Land Cover Data Set for Mexico 2010 Monarch Relevant Land Cover Data Set for Mexico
The USGS Upper Midwest Environmental Sciences Center developed a Monarch Relevant Land Cover data set covering the area of Mexico. We used the 2010 land cover data set produced by the tri-national North American Land Change Monitoring System (NALCMS) and supported by the Commission for Environmental Cooperation (CEC) that depicts year 2010 land cover across North America at 30-meter...
2010 Monarch Relevant Land Cover Data Set for Canada 2010 Monarch Relevant Land Cover Data Set for Canada
The USGS Upper Midwest Environmental Sciences Center developed a Monarch Relevant Land Cover data set covering the area of Canada. We used the 2010 land cover data set produced by the tri-national North American Land Change Monitoring System (NALCMS) and supported by the Commission for Environmental Cooperation (CEC) that depicts year 2010 land cover across North America at 30-meter...
UMRS Floodplain Inundation Attributes UMRS Floodplain Inundation Attributes
Floodplain inundation is believed to be the dominant physical driver of an array of ecosystem patterns and processes in the Upper Mississippi River System (UMRS). Here, we present the results of a geospatial surface-water connectivity model in support of ecological investigations fully described in the USGS Open File Report entitled Indicators of Ecosystem Structure and Function for the...
UMRR HNA-II 2010/11 Level 3 Aquatic Areas - Upper Mississippi River System UMRR HNA-II 2010/11 Level 3 Aquatic Areas - Upper Mississippi River System
The U.S. Geological Survey's Upper Midwest Environmental Sciences Center (UMESC) created high-resolution land cover/use data sets for the Upper Mississippi River System (UMRS). Aerial images of Pools 3-13 Upper Mississippi River System and Pools, Alton-Marseilles, Illinois River were collected in color infrared (CIR) in August of 2010 at 8”/pixel and 16”/pixel respectively using a...
2010/11 Level 2 Aquatic Areas - Upper Mississippi River System 2010/11 Level 2 Aquatic Areas - Upper Mississippi River System
The U.S. Geological Survey's Upper Midwest Environmental Sciences Center (UMESC) has created high-resolution land cover/use data sets for the Upper Mississippi River System (UMRS). Aerial images of Pools 3-13 Upper Mississippi River System and Pools, Alton-Marseilles, Illinois River were collected in color infrared (CIR) in August of 2010 at 8/pixel and 16/pixel respectively using a...
Filter Total Items: 38
Exploring silica stoichiometry on a large floodplain riverscape Exploring silica stoichiometry on a large floodplain riverscape
Freshwater ecosystems are critical zones of nutrient and carbon (C) processing along the land-sea continuum. Relative to our understanding of C, nitrogen (N), and phosphorus (P) cycling within the freshwater systems, the controls on silicon (Si) cycling and export are less understood. Understanding Si biogeochemistry and its coupled biogeochemical processing with N and P has direct...
Authors
Joanna C. Carey, Kathi Jo Jankowski, Paul Julian, Lienne Sethna, Patrick Thomas, Jason J. Rohweder
Spatially explicit modelling of floodplain forest succession: Interactions among flood inundation, forest successional processes, and other disturbances in the Upper Mississippi River floodplain, USA Spatially explicit modelling of floodplain forest succession: Interactions among flood inundation, forest successional processes, and other disturbances in the Upper Mississippi River floodplain, USA
Simulation models are often used to identify hydrologic regimes suitable for different riparian or floodplain tree species. However, most existing models pay little attention to forest successional processes or other disturbances that may interact with the hydrologic regime of river systems to alter forest dynamics in space and time. In this study, we introduce a flood disturbance module...
Authors
Nathan R. De Jager, Molly Van Appledorn, Timothy J. Fox, Jason J. Rohweder, Lyle J. Guyon, Andrew R. Meier, Robert J. Cosgriff, Benjamin J. Vandermyde
Upper Mississippi River Restoration Program Long Term Resource Monitoring element—Spatial data query tool Upper Mississippi River Restoration Program Long Term Resource Monitoring element—Spatial data query tool
The Upper Mississippi River Restoration (UMRR) Program Long Term Resource Monitoring (LTRM) element has been monitoring fish, water quality, and vegetation in six study pools in the Upper Mississippi River system for approximately 30 years. Geographic locations were recorded for all sampling points. All of this information has been made publicly available by way of data download and...
Authors
Jason J. Rohweder
Indicators of ecosystem structure and function for the Upper Mississippi River System Indicators of ecosystem structure and function for the Upper Mississippi River System
This report documents the development of quantitative measures (indicators) of ecosystem structure and function for use in a Habitat Needs Assessment (HNA) for the Upper Mississippi River System (UMRS). HNAs are led periodically by the U.S. Army Corps of Engineers’ Upper Mississippi River Restoration (UMRR) Program, which is the primary habitat restoration program on the UMRS. The UMRR...
Authors
Nathan R. De Jager, James T. Rogala, Jason J. Rohweder, Molly Van Appledorn, Kristen L. Bouska, Jeffrey N. Houser, Kathi Jo Jankowski
Restoring monarch butterfly habitat in the Midwestern US: 'All hands on deck' Restoring monarch butterfly habitat in the Midwestern US: 'All hands on deck'
The eastern migratory population of monarch butterflies (Danaus plexippus plexippus) has declined by >80% within the last two decades. One possible cause of this decline is the loss of ≥1.3 billion stems of milkweed (Asclepias spp.), which monarchs require for reproduction. In an effort to restore monarchs to a population goal established by the US Fish and Wildlife Service and adopted...
Authors
Wayne E. Thogmartin, Laura Lopez-Hoffman, Jason J. Rohweder, James E. Diffendorfer, Ryan G. Drum, Darius J. Semmens, Scott Black, Iris Caldwell, Donita Cotter, Pauline Drobney, Laura L. Jackson, Michael Gale, Doug Helmers, Steven B. Hilburger, Elizabeth Howard, Karen S. Oberhauser, John M. Pleasants, Brice X. Semmens, Orley R. Taylor, Patrick Ward, Jake F. Weltzin, Ruscena Wiederholt
Modelling moose–forest interactions under different predation scenarios at Isle Royale National Park, USA Modelling moose–forest interactions under different predation scenarios at Isle Royale National Park, USA
Loss of top predators may contribute to high ungulate population densities and chronic over-browsing of forest ecosystems. However, spatial and temporal variability in the strength of interactions between predators and ungulates occurs over scales that are much shorter than the scales over which forest communities change, making it difficult to characterize trophic cascades in forest...
Authors
Nathan R. De Jager, Jason J. Rohweder, Brian R. Miranda, Brian R. Sturtevant, Timothy J. Fox, Mark C. Romanski
Science and Products
Filter Total Items: 18
Segment-scale classification, large rivers of the Upper Midwest United States Segment-scale classification, large rivers of the Upper Midwest United States
This dataset is part of a multi-scale assessment and classification for segments of 15 rivers of the Upper Midwest United States that meet various criteria for largeness. All rivers are tributary to the Mississippi River system. The 11,600 kilometers (km) that qualified as large were parsed into 10-kilometer-long segments and classified by major alterations (free-flowing, navigation...
2010 Monarch Relevant Land Cover Data Set for Mexico 2010 Monarch Relevant Land Cover Data Set for Mexico
The USGS Upper Midwest Environmental Sciences Center developed a Monarch Relevant Land Cover data set covering the area of Mexico. We used the 2010 land cover data set produced by the tri-national North American Land Change Monitoring System (NALCMS) and supported by the Commission for Environmental Cooperation (CEC) that depicts year 2010 land cover across North America at 30-meter...
2010 Monarch Relevant Land Cover Data Set for Canada 2010 Monarch Relevant Land Cover Data Set for Canada
The USGS Upper Midwest Environmental Sciences Center developed a Monarch Relevant Land Cover data set covering the area of Canada. We used the 2010 land cover data set produced by the tri-national North American Land Change Monitoring System (NALCMS) and supported by the Commission for Environmental Cooperation (CEC) that depicts year 2010 land cover across North America at 30-meter...
UMRS Floodplain Inundation Attributes UMRS Floodplain Inundation Attributes
Floodplain inundation is believed to be the dominant physical driver of an array of ecosystem patterns and processes in the Upper Mississippi River System (UMRS). Here, we present the results of a geospatial surface-water connectivity model in support of ecological investigations fully described in the USGS Open File Report entitled Indicators of Ecosystem Structure and Function for the...
UMRR HNA-II 2010/11 Level 3 Aquatic Areas - Upper Mississippi River System UMRR HNA-II 2010/11 Level 3 Aquatic Areas - Upper Mississippi River System
The U.S. Geological Survey's Upper Midwest Environmental Sciences Center (UMESC) created high-resolution land cover/use data sets for the Upper Mississippi River System (UMRS). Aerial images of Pools 3-13 Upper Mississippi River System and Pools, Alton-Marseilles, Illinois River were collected in color infrared (CIR) in August of 2010 at 8”/pixel and 16”/pixel respectively using a...
2010/11 Level 2 Aquatic Areas - Upper Mississippi River System 2010/11 Level 2 Aquatic Areas - Upper Mississippi River System
The U.S. Geological Survey's Upper Midwest Environmental Sciences Center (UMESC) has created high-resolution land cover/use data sets for the Upper Mississippi River System (UMRS). Aerial images of Pools 3-13 Upper Mississippi River System and Pools, Alton-Marseilles, Illinois River were collected in color infrared (CIR) in August of 2010 at 8/pixel and 16/pixel respectively using a...
Filter Total Items: 38
Exploring silica stoichiometry on a large floodplain riverscape Exploring silica stoichiometry on a large floodplain riverscape
Freshwater ecosystems are critical zones of nutrient and carbon (C) processing along the land-sea continuum. Relative to our understanding of C, nitrogen (N), and phosphorus (P) cycling within the freshwater systems, the controls on silicon (Si) cycling and export are less understood. Understanding Si biogeochemistry and its coupled biogeochemical processing with N and P has direct...
Authors
Joanna C. Carey, Kathi Jo Jankowski, Paul Julian, Lienne Sethna, Patrick Thomas, Jason J. Rohweder
Spatially explicit modelling of floodplain forest succession: Interactions among flood inundation, forest successional processes, and other disturbances in the Upper Mississippi River floodplain, USA Spatially explicit modelling of floodplain forest succession: Interactions among flood inundation, forest successional processes, and other disturbances in the Upper Mississippi River floodplain, USA
Simulation models are often used to identify hydrologic regimes suitable for different riparian or floodplain tree species. However, most existing models pay little attention to forest successional processes or other disturbances that may interact with the hydrologic regime of river systems to alter forest dynamics in space and time. In this study, we introduce a flood disturbance module...
Authors
Nathan R. De Jager, Molly Van Appledorn, Timothy J. Fox, Jason J. Rohweder, Lyle J. Guyon, Andrew R. Meier, Robert J. Cosgriff, Benjamin J. Vandermyde
Upper Mississippi River Restoration Program Long Term Resource Monitoring element—Spatial data query tool Upper Mississippi River Restoration Program Long Term Resource Monitoring element—Spatial data query tool
The Upper Mississippi River Restoration (UMRR) Program Long Term Resource Monitoring (LTRM) element has been monitoring fish, water quality, and vegetation in six study pools in the Upper Mississippi River system for approximately 30 years. Geographic locations were recorded for all sampling points. All of this information has been made publicly available by way of data download and...
Authors
Jason J. Rohweder
Indicators of ecosystem structure and function for the Upper Mississippi River System Indicators of ecosystem structure and function for the Upper Mississippi River System
This report documents the development of quantitative measures (indicators) of ecosystem structure and function for use in a Habitat Needs Assessment (HNA) for the Upper Mississippi River System (UMRS). HNAs are led periodically by the U.S. Army Corps of Engineers’ Upper Mississippi River Restoration (UMRR) Program, which is the primary habitat restoration program on the UMRS. The UMRR...
Authors
Nathan R. De Jager, James T. Rogala, Jason J. Rohweder, Molly Van Appledorn, Kristen L. Bouska, Jeffrey N. Houser, Kathi Jo Jankowski
Restoring monarch butterfly habitat in the Midwestern US: 'All hands on deck' Restoring monarch butterfly habitat in the Midwestern US: 'All hands on deck'
The eastern migratory population of monarch butterflies (Danaus plexippus plexippus) has declined by >80% within the last two decades. One possible cause of this decline is the loss of ≥1.3 billion stems of milkweed (Asclepias spp.), which monarchs require for reproduction. In an effort to restore monarchs to a population goal established by the US Fish and Wildlife Service and adopted...
Authors
Wayne E. Thogmartin, Laura Lopez-Hoffman, Jason J. Rohweder, James E. Diffendorfer, Ryan G. Drum, Darius J. Semmens, Scott Black, Iris Caldwell, Donita Cotter, Pauline Drobney, Laura L. Jackson, Michael Gale, Doug Helmers, Steven B. Hilburger, Elizabeth Howard, Karen S. Oberhauser, John M. Pleasants, Brice X. Semmens, Orley R. Taylor, Patrick Ward, Jake F. Weltzin, Ruscena Wiederholt
Modelling moose–forest interactions under different predation scenarios at Isle Royale National Park, USA Modelling moose–forest interactions under different predation scenarios at Isle Royale National Park, USA
Loss of top predators may contribute to high ungulate population densities and chronic over-browsing of forest ecosystems. However, spatial and temporal variability in the strength of interactions between predators and ungulates occurs over scales that are much shorter than the scales over which forest communities change, making it difficult to characterize trophic cascades in forest...
Authors
Nathan R. De Jager, Jason J. Rohweder, Brian R. Miranda, Brian R. Sturtevant, Timothy J. Fox, Mark C. Romanski