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Conservation Assessment for Native Fish in the Upper Colorado River Basin

Dates

End Date
2014-11

Summary

Fishes of the Upper Colorado River Basin have one of the highest levels of endemism in the United States. The range and abundance of these fish has declined over the last century and continues to decline as a result of legacy impacts from past management practices, current water management, interactions with non-natives, and other impacts. Seven of these fish are considered imperiled by the American Fisheries Society and four are listed as endangered by the U.S. Fish and Wildlife Service. We applied a complementarity-based approach to develop priority ranks (0 – 1; low to high) for catchments in the Upper Colorado River Basin. We used methods and a framework that we had previously developed for the Lower Colorado River Basin so both [...]

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Purpose

Objectives for this project were to develop a) a geo-referenced anthropogenic threat index for the Upper Colorado River Basin using techniques based on our published research (Paukert et al. 2011; Strecker et al. 2011; Whittier et al. 2013) and b) conservation priority rankings for fish at the scale of the NHDPlusV1 catchment boundaries (http://www.horizon-systems.com/nhdplus/nhdplusv1_home.php). The purpose for developing a conservation priority data layer was to provide agencies and multi-agency partnerships with an additional tool to assist in the decision–making process for aquatic habitat conservation. This tool is based on spatial patterns in the predicted distribution of native species and threats to persistence (i.e., non-native species, land use, and habitat fragmentation).

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Spatial Services

ScienceBase WMS

Communities

  • LC MAP - Landscape Conservation Management and Analysis Portal
  • National Fish Habitat Partnership
  • Southern Rockies Landscape Conservation Cooperative

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