Skip to main content
Advanced Search

Filters: Tags: Endangered species act (X)

8 results (8ms)   

Filters
Date Range
Extensions (Less)
Types (Less)
Contacts (Less)
Categories (Less)
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
Greater sage-grouse (Centrocercus urophasianus) is a candidate for listing under the Endangered Species Act because of population and habitat fragmentation coupled with inadequate regulatory mechanisms to control development in critical areas. In addition to the current threats to habitat, each 1 degree celsius increase due to climate change is expected to result in an additional 87,000 km2 of sagebrush (Artemisia spp.) that will be converted to unsuitable habitat for sage-grouse. Thus, the future distribution and composition of sagebrush landscapes is likely to differ greatly from today’s configuration. We conducted a large, multi-objective project to identify: (1) characteristics of habitats required by sage-grouse,...
This layer represents least-cost (shortest-path) habitat centrality across potentiall suitable habitat for gray wolves in the Western United States. Here, least-cost centrality measures the relative role of a given portion of a potential movement path to facilitating movement of wolves across the landscape. Centrality metrics are based on graph theory. A graph is a set of nodes in which pairs of nodes can be connected by edges representing functional connections (e.g., dispersal) between the nodes. Edges can be assigned weights that represent attributes such as habitat quality. A sequence of nodes connected by edges forms a path. Landscape lattices are graphs in which every cell in a raster is treated as a node...
thumbnail
US Fish and Wildlife Service Critical Habitat Units for Northern Spotted Owl and Marbled Murrelet for Oregon, Washington and California
thumbnail
This comprehensive database describes the core attributes of quantification tools developed for market-based conservation in the United States. It encompasses tools designed for compensatory mitigation, non-compensatory mitigation, and voluntary conservation/restoration programs. The dataset consists of 107 tools. Each tool's features are described using 33 attributes related to general, technical, and ecological/geographic details. This database was first published in 2018. Version 2.0 expands upon the original database by including tools developed for compensatory mitigation under the Clean Water Act section 404 regulatory program. Version 2.0 also provides updates on tool details provided in the original database....
This paper describes how a hydrologic model proved to be a valuable tool to help interested parties understand impacts to four threatened and endangered fish species in the Upper Colorado River. In 1994, the Ute Water Conservancy District initiated permitting and design of the Plateau Creek pipeline replacement. The project was considered a major Federal action and therefore subject to the National Environmental Policy Act. Under Section 7 of the Endangered Species Act, the U.S. Fish and Wildlife Service (USFWS) entered the process to develop a Biological Opinion (BO) and determined that the project could potentially impact the endangered fish in the 15-mile reach of the Colorado River. The Section 7 consultation...
thumbnail
The Colorado pikeminnow, razorback sucker, humpback chub and bonytail are endangered fish species that once thrived in the Colorado River system. Dam installation and the introduction of nonnative fish changed the river environment and put these fish at risk. Established in 1988, the Upper Colorado River Endangered Fish Recovery Program is a partnership of public and private organizations working to recover these endangered species while allowing continued and future water development.
This paper is an edited transcript of a talk given by John Hamill for the Intractable Conflict/Constructive Confrontation Project on April 10, 1993. Funding for this Project was provided by the William and Flora Hewlett Foundation and the University of Colorado. All ideas presented are those of the author and do not necessarily represent the views of the Consortium, the University, or Hewlett Foundation
thumbnail
This dataset depicts Critical Aquatic Refuges (CARs) found in the Sierra Nevada National Forests. CARs are subwatersheds, generally ranging between 10,000 to 40,000 acres, with some as small 500 acres and some as large as 100,000 acres, that contain either: * known locations of threatened, endangered, or sensitive species, * highly vulnerable populations of native plant or animal species, or * localized populations of rare native aquatic- or riparian-dependent plant or animal species. The primary role of CARs is to preserve, enhance, restore or connect habitats for these species at the local level and to ensure the viability of aquatic or riparian dependent species. In many cases, CARs support the best remaining...
    map background search result map search result map Critical Habitat Units for Northern Spotted Owl and Marbled Murrelet Sierra Nevada Critical Aquatic Refuges Western United States Gray Wolf Least-Cost Habitat Centrality Database of Biodiversity, Habitat, and Aquatic Resource Quantification Tools Used for Market-based Conservation in the United States (ver. 2.0, June 2022) Sierra Nevada Critical Aquatic Refuges Critical Habitat Units for Northern Spotted Owl and Marbled Murrelet Western United States Gray Wolf Least-Cost Habitat Centrality Database of Biodiversity, Habitat, and Aquatic Resource Quantification Tools Used for Market-based Conservation in the United States (ver. 2.0, June 2022)