August 12, 2015
Comparing ecoregional classifications for natural areas management in the Klamath Region, U.S.A.
By Daniel Sarr, Andrew Duff, Eric Dinger, Sarah Shafer (GECSC), Michael Wing, Nathaniel Seavy, and John Alexander. Published in Natural Areas Journal.
This study evaluates the ability of three ecoregional classifications (Bailey, Omernik, World Wildlife Fund) and two derived classification (Omernik Revised and Climate Zones) to explain species' distributions in the Klamath region of southwest Oregon and northwest California. Species distribution presence/absence data were analyzed for trees, amphibians, large and small mammals, and resident and migrant birds. Of these taxa groups, tree species distributions displayed the strongest correspondence with the ecoregional classifications and, of the five ecoregional classifications evaluated, the Omernik Revised classification had the best overall performance. The potential implications of these results for natural areas management are discussed. This work was done in collaboration with the National Park Service's Klamath Network. (Icon photo: National Park Service)
August 5, 2015
Preliminary Geophysical Interpretations of Regional Subsurface Geology near the Questa Mine Tailing Facility and Guadalupe Mountain, Taos County, New Mexico
By Tien Grauch, Ben Drenth, Ren Thompson (GECSC), and Paul Bauer. USGS Open-File Report 2015-1129.
For remediation and reclamation purposes, the New Mexico Environment Department requested assistance from the USGS in assessing the subsurface geology of the area near the Tailing Facility of the Questa Mine. This report presents interpretations of the gravity and magnetic maps that the Survey developed from aeromagnetic data, regional gravity data, data from four ground magnetic traverses, geologic mapping, a digital elevation model, and information from a few shallow wells. These interpretations are preliminary and could be improved with additional detailed ground-based geophysics, comprehensive physical-property studies, and deep drillholes.
August 3, 2015
U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2014 annual report
By Zachary Bowen and others, including Steve Garman of the GECSC. USGS Open-File Report 2015-1091.
This is the seventh report produced by the USGS for the Wyoming Landscape Conservation Initiative (WLCI), a science-based program founded to assess, monitor, and enhance aquatic and terrestrial habitats at a landscape scale in the southwest portion of the state. The report details the 26 Fiscal Year 2014 activities conducted by the USGS that address the specific management needs identified by WLCI partners. GECSC Ecologist Steve Garman contributions to the Initiative include modeling land use/cover change.