The streams and rivers of the Ozark Plateaus are an unrivaled natural resource for the region. They provide habitat to some of the North America’s most abundant and rich biodiversity, while also serving as water sources for human drinking, agricultural, and recreational needs. The Nature Conservancy (TNC) has identified several priority watersheds ...
he construction of a new 10.4 km (6.5 mi) section of HWY Robert-Cliche (73) south of Québec City, Canada, integrated an unprecedented number of mitigation measures to maintain connectivity between a bisected white-tailed deer winter yard and minimize apprehended deer-vehicle collisions. In this paper we present mitigation measures planned and compl...
Artificial lighting has two important effects on sea turtles: It reduces the attractiveness of the beach to nesting females, and thus decreases the number of turtles which place nests in a coastal region, and; it interferes with the hatchlings ability to orient normally from the nest to the ocean. Both of these effects depend upon the overall inten...
The Salmon Resource and Sensitive Area Mapping (SRSAM) project was a unique effort undertaken by the Oregon Department of Transportation (ODOT) to develop a Geographic Information System (GIS) of sensitive natural resource sites integrated with high-resolution digital color infrared imagery for the entire Oregon state highway system (approximately ...
St. John’s Sideroad, is a major east-west arterial under the jurisdiction of the Regional Municipality of York (York Region). It is located in the Town of Aurora, Ontario, Canada and lies within the watershed of the East Holland, Lake Simcoe basin. This unique project involved the widening and reconstruction of a two-kilometre section of St. John’s...
The impacts of roads on wildlife are extensive and can be especially harmful on U.S. National Forest lands where ecosystems are relatively intact. Access allowed by wildland roads can increase poaching, over-hunting, and over-trapping. Roads also increase negative edge effects, cause fragmentation, and facilitate or hinder wildlife movement. Forest...
Wildlife in Metropolitan Los Angeles now have an underpass designed and built exclusively for their safe passage under a busy boulevard. The underpass supports the longevity of the Puente-Chino Hills Wildlife Corridor (Corridor). The Corridor contains some of the last remaining stands of several habitat types that are declining in the Los Angeles B...
Integrated ecosystem approach is essential to offset adverse impact of transportation network on aquatic habitats in the fragile ecosystem of the Himalayan mountains. It is a cause of concern that the poorly designed network of roads and trails in mountain areas are expanding, without giving due consideration to natural processes of ecosystem funct...
Bridge replacement project minimized sensitive resource impacts and constructed a bridge designed to last 75 years. As a result of the New Years Eve/Day storm of 2005/2006, the California Department of Transportation (Caltrans) had to close to all traffic the Russian River Bridge, a two-lane conventional highway east of Geyserville due to significa...
The I-5 Columbia River Crossing (CRC) project is a highway and transit project located on Interstate 5 (I-5) along a five mile corridor between Vancouver, Washington and Portland, Oregon. Spanning two states, cities and counties, the CRC project has many different jurisdictional boundaries that can include different ideologies, requirements, and es...
