An in-depth System for Assessing Vulnerability of Species modeling effort that looks at two dozen threatened and endangered species and how they may be affected by a changing climate. The authors provide a numerical scale of risk based on possible changes in habitat, physiology, phenology, and interactions across a scale of uncertainties. Results and discussion of the most critical factor for each species are presented.
Habitat factsheets and scorecards describe the habitat needs and behaviors of species of interest in the Colorado State Wildlife Action Plan. This particular document is for dabbling ducks and their utilization of seasonal shallow water wetlands. These habitat details and score cards can be used to analyze current habitat conditions and potential for improvement.
This report, contracted by the Utah Division of Wildlife Resources (UDWR) describes a vegetation-monitoring trip that was conducted on May 9-12, 2022, by John Leary (RiversEdge West) and Wally Macfarlane (Utah State University) from Bonanza Bridge to Asphalt Wash and a subsequent vegetation data analysis. The vegetation-monitoring trip and analysis evaluated the effectiveness of prior non-native vegetation removal efforts and established the baseline condition for planned upcoming treatments.
A look at several case studies from conservation practitioners and ornithological social scientists to highlight six core principles of translational ecology - an intentional approach in which researchers and practitioners from multiple disciplines collaborate on conservation management. The authors demonstrate how implementing collaboration, engagement, communication, commitment, process, and decision-framing can lead to improved conservation decision-making and delivery of outcomes applicable to specific management decisions.
A look at beetle-occupied tamarisk sites 11-13 years after initial occupancy to determine long-term vegetative community response. Study found that Tamarix cover across sites initially declined an average of ca. 50% in response to the beetle, but then recovered. Changes in the associated plant community were small but supported common management goals, including a 47% average increase in cover of a native shrub (Salix exigua), and no secondary invasions by other non-native plants.
Recovery of a native tree following removal of an invasive competitor with implications for endangered bird habitat
A guide that walks the user through the use of the AGOL-based habitat viewer (https://usgs.maps.arcgis.com/apps/webappviewer/index.html?id=b362c94bd7714969805ab7dd29336ce0). User is provided with instructions for changing base map layers, toggling through data layers, utilizing tools to compare different datasets, and locating the metadata for the provided layers. Manual uses screen shots of the AGOL platform to aid in seamless navigation.
Riverine ecosystems are known to provide important habitat for avian communities, but information on responses of birds to differing levels of Tamarix is not known. Past research on birds along the Colorado River has shown that avian abundance in general is greater in native than in non-native habitat.
In this chapter, Carothers et al have three objectives: first, they document the value of nonnative Tamarix as summer habitat for birds compared to native riparian habitats of mesquite bosques and cottonwood/willow, and mixed deciduous gallery woodlands; second, they specifically focus on the unintended consequences to native avifauna of dam construction, Tamarix invasion, native vertebrate colonization of the Tamarix-dominated riparian habitat, and subsequent biocontrol along approximately 300 miles of the Colorado River in Grand and Glen Canyons; and, third, the
A 2006 review of the saltcedar (Tamarix) biocontrol program.
DeLoach, C.J., Milbrath, L.R., Carruthers, R., Knutson, A.E., Nibling, F., Eberts, D., Thompson, D.C., Kazmer, D.J., Dudley, T.L., Bean, D.W. and Knight, J.B., 2006. Overview of saltcedar biological control. In Monitoring science and technology symposium: unifying knowledge for sustainability in the Western Hemisphere. Proceedings RMRS-P-42CD. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fort Collins, Colorado (pp. 92-99).