Project Portfolio

Tall Oatgrass Ecological Impact Study

Tall oatgrass ( Arrhentherum elatius) is a non-native cool season bunchgrass from Europe that is found in many grassland systems across the United States. While the species is fairly sensitive to heavy grazing pressure, it can become invasive, replacing valuable native species and altering grassland habitat and heterogeniety.  In the grassland ecosystems surrounding the City of... Continue Reading →

Virgin River Restoration Plan

Project Synopsis Like many rivers in the southwestern United States, the Virgin River had been impacted by the continuous spread of invasive tamarisk (Tamarix spp.) along it's corridor.  The thick stands of trees along the river were contributing to a myriad of problems: increased habitat loss for many endangered species, increased wildfire risk, and higher... Continue Reading →

Biological Surveys and Research

Project Synopsis Natural resource planning and project success assessment often require knowledge of the current status or trends of biological communities. Vegetation, small mammals, breeding bird, and invertebrate communities were studied at the Yuma East Wetlands, a large-scale riparian and wetland restoration project along the lower Colorado River, to evaluate communities before and after restoration... Continue Reading →

Endangered Species Surveys

Project Synopsis To comply with the Endangered Species Act (ESA), projects that may have potential impacts to species listed under the ESA require species surveys for presence/absence, population growth, and trends. The Yuma East Wetlands, a large-scale riparian and wetland restoration project along the lower Colorado River and managed by the Yuma Crossing National Heritage... Continue Reading →

Navajo Nation Integrated Weed Management Plan

Project Synopsis In the southwestern United States, the ongoing spread of invasive plants has resulted in significant damage to rangelands, watersheds, and private property.  On the Navajo Nation, the impact of non-native weed species presents a significant problem to their economy.  Weed infestations have been attributed to declines in agricultural productivity, property damage, habitat loss,... Continue Reading →

Navajo Vegetation Inventories

Project Synopsis: For the Navajo people, grazing is an important aspect of their culture, seen as a historical tradition symbolizing their connection with the land.  To help manage grazing on the Navajo Nation, the Bureau of Indian Affairs (BIA) conducts regular rangeland assessments on the quality and quantity of vegetation available for livestock.  These assessments are... Continue Reading →

Tsegi and Nitsin Grazing Management Plans

Project Synopsis The Bureau of Indian Affairs (BIA), Navajo Region is in the process of renewing grazing permits across the Navajo Nation. In order to renew the permits, the BIA recommends that a Grazing Management Plan is prepared. Therefore, the Bureau of Indian Affairs, Western Navajo Agency initiated Grazing Management Plans for Tsegi and Nitsin Canyons... Continue Reading →

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