Douglas Andersen - USGS

Aquatic Systems

Research Ecologist

Duty Station:
Denver Field Station
c/o Bureau of Reclamation
P.O. Box 25007 86-68220
Denver, CO 80225-0007

Phone: 303-445-2209
Fax: 303.445.6328
Email: doug_andersen@usgs.gov

Current Research

• Elk and Bison Grazing Ecology in the San Luis Valley, Colorado
• Colorado River Basin Riparian Ecology
• Managed Streamflow and the Ecology of the Bill Williams River

Publications

• Novel plant communities limit the effects of a managed flood to restore riparian forests along a large regulated river
• Vulnerability of riparian ecosystems to elevated CO2 and climate change in arid and semiarid western North America
• Managed flood effects on beaver pond habitat in a desert riverine ecosystem, Bill Williams River, Arizona USA
• Beaver dams, hydrological thresholds, and controlled floods as a management tool in a desert riverine ecosystem, Bill Williams River, Arizona
• Ecosystem effects of environmental flows: Modelling and experimental floods in a dryland river
• Dams, floodplain land use, and riparian forest conservation in the semiarid Upper Colorado River Basin, USA
• Variable role of aquatic macroinvertebrates in initial breakdown of seasonal leaf litter inputs to a cold-desert river
• The influence of river regulation and land use on floodplain forest regeneration in the semi-arid Upper Colorado River Basin, USA
• Road impacts on the Baca National Wildlife Refuge, Colorado, with emphasis on effects to surface- and shallow ground-water hydrology -- a literature review
• Las Vegas Wash water quality monitoring program 2006 report of findings
• Flood pattern and weather determine Populus leaf litter breakdown and nitrogen dynamics on a cold desert floodplain
• Characterizing flow regimes for floodplain forest conservation: an assessment of factors affecting sapling growth and survivorship on three cold desert rivers
• Patterns of nitrogen accumulation and cycling in riparian floodplain ecosystems along the Green and Yampa rivers
• Ord's kangaroo rats living in floodplain habitats: factors contributing to habitat attraction
• Beaver herbivory of willow under two flow regimes: a comparative study on the Green and Yampa rivers
• Small mammals within riparian habitats of a regulated and unregulated aridland river
• Small mammals within riparian habitats of a regulated and unregulated aridland river
• Beaver herbivory and its effect on cottonwood trees: influence of flooding along matched regulated and unregulated rivers
• Multiple pathways for woody plant establishment on floodplains at local to regional scales
• Flood flows, leaf breakdown, and plant-available nitrogen on a dryland river floodplain
• The effects of bird use on nutrient removal in a constructed wastewater-treatment wetland
• Effects of river flow regime on cottonwood leaf litter dynamics in semi-arid northwestern Colorado
• Spatial correlations of Diceroprocta apache and its host plants: evidence for a negative impact from Tamarix invasion
• Effects of cottonwood leaf beetle Chrysomela scripta (Coleoptera: Chrysomelidae) on survival and growth of Fremont cottonwood (Populus fremontii) in northwest Colorado
• Observations of the larval stages of Diceroprocta apache Davis (Homoptera: Tibicinidae)
• The demographic response of bank-dwelling beavers to flow regulation: a comparison on the Green and Yampa rivers
• Plant-herbivore-hydroperiod interactions: effects of native mammals on floodplain tree recruitment
• Movement patterns of riparian small mammals during predictable floodplain inundation
• Rodent use of anthropogenic and 'natural' desert riparian habitat, lower Colorado River, Arizona
• Factors controlling the establishment of Fremont cottonwood seedlings on the Upper Green River, USA
• Butterfly (Papilionoidea and Hesperioidea) assemblages associated with natural, exotic, and restored riparian habitats along the lower Colorado River, USA
• Waterfowl and wildlife issues
• A spatially-explicit model of search path and soil disturbance by a fossorial herbivore
• Demographics of small mammals using anthropogenic desert riparian habitat in AZ
• Review of Mammals of Colorado by J. P. Fitzgerald, C. A. Meaney, and D. M. Armstrong. Denver Museum of Natural History and University Press of Colorado, Niwot, Colorado. Colorado mammals
• Are cicadas (Diceroprocta apache) both a "keystone" and a "critical-link" species in lower Colorado River riparian communities?
• An assessment of riparian environmental quality by using butterflies and disturbance susceptibility scores
• Search path of a fossorial herbivore, Geomys bursarius, foraging in structurally complex plant communities
• The relationship between habitat quality and mound building by a fossorial rodent, Geomys bursarius
• Tunnel-construction methods and foraging path of a fossorial herbivore, Geomys bursarius
• Geomys bursarius burrowing patterns: influence of season and food patch structure
• Below-ground herbivory in natural communities: a review emphasizing fossorial animals
• An assessment of ground-nest depredation in a catastrophically disturbed region, Mount St. Helens, Washington
• The effects of catastrophic ecosystem disturbance: the residual mammals at Mount St. Helens
• Nutritional ecology of a fossorial herbivore: protein N and energy value of winter caches made by the northern pocket gopher, Thomomys talpoides
• Snowpack and variation in reproductive ecology of a montane ground-nesting passerine, Junco hyemalis
• Population dynamics and bioenergetics of a fossorial herbivore, Thomomys talpoides (Rodentia: Geomyidae), in a spruce-fir sere