A survey of DOTs, FHWA offices, USFWS and federal land managing agencies for practices adopted to manage project review given the uncertainty associated with increasing listing of new species under…
The benefits of bats to humans and the environment are well known. Some are principal pollinators and others consume large quantities of insects detrimental to agricultural crops and human health.…
There has been a great deal of interest in building airport stations on rail public transportation (heavy and light rail as well as intercity passenger rail). This study would look…
The Indiana bat (Myotis sodalis) is a federally listed endangered species and the Northern long-eared bat (Myotis septentrionalis) is a species proposed for Federal listing under the Endangered Species Act…
Even in remote areas of California, roads are challenging for wildlife-they lead to car strikes, changes in microhabitat characteristics along road boundaries, and large-scale habitat fragmentation. We all suspect that…
Within the Colorado desert area of southern California, the Coachella Valley Multiple Species Habitat Conservation Plan (CVMSHCP) spans 1.1 million acres across the Coachella Valley. Bordered by Joshua Tree National…
Project Description: With culverts installed in numerous locations throughout southern California to allow for hydrological flow under roadways, they also provide the secondary function of vagile species connectivity to habitat…
Background and Objectives Roads of different sizes, substrates, and traffic volumes have been shown to inhibit the movement of large mammals, small mammals, herpetofauna, and invertebrates (Brehme et al. 2013).…
In 1998, the Peninsular bighorn sheep (PBS) was federally listed as endangered throughout its distribution in the Peninsular Ranges of California. As identified by the PBS Recovery Plan (USFWS 2000),…
Migratory birds establish nests on bridge structures and within roadway r-o-w’s. Restricted activity periods due to nesting restrict construction, maintenance and rehabilitation of roads and bridges leading to increased costs.…