Road Ecology Center - UC Davis
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News 473 Publications 11 Members

Model for estimating wildlife mortality on roads and its implication for mitigation and management

Kline, Natasha C. Swann, Don E. Schaefer, Adrian Beupre, Kristen Pokorny, Martin

Project funding: National Park Service/Saguaro National Park Total funds: $50,000 Project Period: 1994-2001 In an attempt to understand the effects that roads were having on wildlife in Saguaro National Park, weekly wildlife mortality surveys were conducted from 1994-1999. From our survey data and additional data collected on scavenging rates, obse...

Preliminary analysis of locations where wildlife crosses highways in the Southern Rocky Mountains

Barnum, Sarah

Highway/wildlife conflicts are becoming an acknowledged topic of concern for both conservation and transportation planners. Interest in relieving both direct mortality due to animal/vehicle collisions and road-caused habitat fragmentation is growing.However, solving these problems requires detailed information about characteristics of highway segme...

Enhancing protection for unusually sensitive ecological areas from pipeline releases

Sames, Christina Fink, Dennis

The Research and Special Programs Administration (RSPA) of the Department of Transportation is required to identify areas unusually sensitive to environmental damage in the event of a hazardous liquid pipeline accident. Pipeline operators that can affect these "unusually sensitive areas" (USAs) must develop and follow an integrity management progra...

Elm Fork of the Trinity River Floodplain Management Study

Tickle, Greg Clary, Melinda

Wendy Lopez and Associates, Inc. (WLA) was asked to provide a conservation and ecological restoration overview for the City of Dallas as part of an Elm Fork Floodplain Management Study. This study encompasses a unique portion of the main stem of the Elm Fork of the Trinity River, Dallas County, Dallas, Texas. The project area includes approximately...

Environmental considerations for construction of bridges and protected freshwater mussel species, a case study

Reutter, David S. Patrick, Frank Charters, David A. Jr.

The Kennerdell Bridge is located within the Allegheny River National Wild and Scenic River Corridor, approximately 50 miles north of Pittsburgh. The former bridge was identified as being in fair-to-poor condition, with the original main truss spans exhibiting the most serious deterioration. Several bridge replacement options were developed during i...

Natural fish passage structures in urban streams (Part 1: Hydrologic and resource issues)

Hegberg, Charles H. Schlindwein, Alan Cohen, Stephen J. Jacobs, Susan

Fish passage is now an integral part of compensatory mitigation under the new Nationwide Permit regulations. Engineered structures and stream restoration designs are common solutions to fish passage; however, in urban systems such solutions may not be feasible. Natural structures such as riffle grade controls and flow constrictor/step pools can pro...

Interpretation of joint trends in traffic volume and traffic-related wildlife mortality: a case study from Key Largo, Fl...

Fahrig, Lenore Neill, Kimberley E. Duquesnel, James G.

Certain combinations of time trends in traffic volume and traffic-related wildlife mortality can provide strong evidence for trends in the wildlife population itself. For example, if traffic volume increases over time while traffic-related wildlife mortality decreases over time, the wildlife population itself is almost certainly decreasing. From 19...

Innovative implementation of the Endangered Species Act to improve wildlife passage

Davis, Dan Gray, Mary E.

U. S. Highway 12 is a major highway located in North Central Idaho. It bisects a primitive, remote area of the Clearwater National Forest and is adjacent to the Selway-Bitterroot Wilderness. Habitat in this area supports a wide variety of species including fisher, bobcat, cougar, wolverine, elk, moose, deer, as well as gray wolf and lynx, which are...

Evaluation of a wildlife underpass on Vermont State Highway 289 in Essex, Vermont

Austin, John M. Garland, Larry

State Highway 289 (a.k.a. circumferential highway) in Essex, Vermont, was constructed in 1993 as a means of shifting growing traffic volumes in the area around Burlington, Vermont, to reduce traffic congestion in some areas. This highway bisects streams, wetlands, upland and deer winter habitats important for the survival of area wildlife such as w...

Mitigation measures for impacts to fish habitat: Maine turnpike modernization and widening — a case study

Farrell, Scott Simmons, Richard

Funding Source: Maine Turnpike Authority Total Budget: $25,000 Problem Statement A 30-mile segment of Maine Turnpike from mile 12 in the Town of York to mile 42 in Scarborough is proposed for widening and modernization. There are 53 different crossings associated with various streams, rivers and unnamed tributaries that are part of Maine s southern...

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