Jonathan Friedman - USGS

Ecosystem Dynamics

Research Hydrologist

Duty Station:
Fort Collins Science Center
2150 Centre Ave
Bldg C
Fort Collins, CO 80525

Phone: 303-541-3017; 970-226-9318
Fax: 970.226.9230
Email: friedmanj@usgs.gov

Current Research

• Modeling the Importance of Native vs. Invasive Vegetation Dominance for Neotropical Migratory Bird Use of Western Riparian Habitats
• Erosional Consequence of Tamarisk Removal
• Streamflow-Vegetation Relations to Evaluate Flow Regimes
• Global Change: Riparian Exotic Species

Products

Publications

Total Records:45

• Aerial photographs and shape files for GIS analysis along the Little Missouri River
• Aerial photographs and shape files for GIS analysis along the Little Missouri River: Little Missouri River shape files
• Aerial photographs and shape files for GIS analysis along the Little Missouri River: Little Missouri River aerial photographs, 1966
• Aerial photographs and shape files for GIS analysis along the Little Missouri River: Little Missouri River aerial photographs, 1995
• Aerial photographs and shape files for GIS analysis along the Little Missouri River: Little Missouri River aerial photographs, 1982
• Aerial photographs and shape files for GIS analysis along the Little Missouri River: Little Missouri River aerial photographs, 1974
• Aerial photographs and shape files for GIS analysis along the Little Missouri River: Little Missouri River aerial photographs, 1958
• Aerial photographs and shape files for GIS analysis along the Little Missouri River: Little Missouri River aerial photographs, 1939
• Aerial photographs and shape files for GIS analysis along the Little Missouri River: Little Missouri River aerial photographs, 1949
• Erosional consequence of saltcedar control
• Influence of flow variability on floodplain formation and destruction, Little Missouri River, North Dakota
• Climate change: The science of impacts
• Latitudinal variation in cold hardiness in introduced Tamarix and native Populus
• Evolution of cold hardiness in North American Tamarix ramosissima
• Transverse and longitudinal variation in woody riparian vegetation along a montane river
• Dominance of non-native riparian trees in western USA
• Use of individualistic streamflow-vegetation relations along the Fremont River, Utah, USA to assess impacts of flow alteration on wetland and riparian area
• Delayed effects of flood control on a flood-dependent riparian forest
• Dating floodplain sediments using tree-ring response to burial
• Vegetation responses to dam removal
• Potential responses of riparian vegetation to dam removal
• Extreme floods, channel change, and riparian forests along ephemeral streams
• Effects of physical disturbance and granivory on establishment of native and alien riparian trees in Colorado, USA
• The disparity between extreme rainfall events and rare floods: with emphasis on the semi-arid American West
• Mortality of riparian box elder from sediment mobilization and extended inundation
• Downstream effects of dams on channel geometry and bottomland vegetation: regional patterns in the Great Plains
• Research considerations for biogeomorphology
• Flood dependency of cottonwood establishment along the Missouri River, Montana, USA
• Water management and cottonwood forest dynamics along prairie streams
• Constraints on establishment of plains cottonwood in an urban riparian preserve
• Channel narrowing and vegetation development following a Great Plains flood
• The role of vegetation and bed-level fluctuations in the process of channel narrowing
• Fluvial process and the establishment of bottomland trees
• Restoration of riparian forest using irrigation, artificial disturbance, and natural seedfall
• Plains cottonwood regenerates from natural seedfall on disturbed, irrigated sites
• Effects of salinity on establishment of Populus fremontii (Cottonwood) and Tamarix ramosissima (Saltcedar) in the southwestern United States
• Geomorphic requirements for establishment and maintenance of cottonwood forest
• Modeling effects of flow alteration on riparian vegetation
• Geomorphic processes determine instream flow effects on cottonwood regeneration
• Relating riparian vegetation to present and future streamflows
• Effects of gravel mining on natural cottonwood stands
• Establishment, sex structure and breeding system of an exotic riparian willow, Salix X rubens
• Reproduction of an exotic riparian tree willow, Salix fragilis (L.), in Colorado
• Flow recommendations for maintaining riparian vegetation along the Upper Missouri River, Montana
• Riparian Vegetation of the Black Canyon of the Gunnison River, Colorado: composition and Response to Selected Hydrologic Regimes Based on a Direct Gradient Assessment Model