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Articles 1 - 9 of 9
Full-Text Articles in Physical Sciences and Mathematics
William Halliday Oral History Interview With Spencer Fleury And Todd Chavez, July 23, 2007, William Halliday (Interviewee), Spencer Fleury (Interviewer), Todd Chavez (Interviewer)
William Halliday Oral History Interview With Spencer Fleury And Todd Chavez, July 23, 2007, William Halliday (Interviewee), Spencer Fleury (Interviewer), Todd Chavez (Interviewer)
Environmental Sustainability Oral Histories
Dr. William Halliday, medical surgeon and karst terrain authority, relates segments of his life story back to the development of his interest in karst and caving. Dr. Halliday recounts his involvement as a charter member of the National Speleological Society (NSS), founding several grottos, and the political activism in which he participated on their behalf. He describes a few of his international caving adventures, the difference between karst and pseudo-karst, and his impressions on whether there exists an attitudinal divide between geologists and amateur sport cavers. The interview ends with Dr. Halliday's personal belief that Mars exploration should be pivotal …
Currents In Water Resources Law And Policy: How Is “Prior” Coping With New Stresses? [Outline], A. Dan Tarlock, David H. Getches
Currents In Water Resources Law And Policy: How Is “Prior” Coping With New Stresses? [Outline], A. Dan Tarlock, David H. Getches
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
3 pages.
Includes bibliographical references
"A. Dan Tarlock, Distinguished Professor of Law and Director, Program in Environmental and Energy Law, Chicago-Kent College of Law"
"David H. Getches, Dean and Raphael J. Moses Professor of Natural Resources Law, University of Colorado Law School"
The Future Of Mineral Development On Federal Lands In The United States, John D. Leshy
The Future Of Mineral Development On Federal Lands In The United States, John D. Leshy
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
11 pages.
Includes bibliographical references
"Outline of presentation of John D. Leshy, Harry D. Sunderland Distinguished Professor, U.C. Hastings College of the Law, Natural Resources Law center, June 7, 2007" (pp. 3-5)
"Leshy draft 4.27.07 For Natural Resources Law Center" (pp. 6-13)
Slides: Summary: Sources Of Stress And The Changing Context Of Natural Resources Law And Policy In The New West, William R. Travis
Slides: Summary: Sources Of Stress And The Changing Context Of Natural Resources Law And Policy In The New West, William R. Travis
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
Presenter: Dr. William R. Travis, Department of Geography, University of Colorado at Boulder
43 slides
Quaternary Evolution Of The Colorado River At Lees Ferry, Arizona, William Scott Cragun
Quaternary Evolution Of The Colorado River At Lees Ferry, Arizona, William Scott Cragun
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A well-exposed suite of Colorado River fill terraces preserved at Lees Ferry records the oscillating history of this major river superimposed on its overall downcutting of the Colorado Plateau. Detailed mapping, sedimentology, cross-sectional surveys, and the use of two geochronometers have been used in order to establish a detailed chronostratigraphy for the area. Eight distinct deposits have been identified along the Colorado River (Ml -M7, and S3), and four deposits have been identified along the Paria River (Pl -P4).
Geochronology of six of these deposits using optically stimulated luminescence and cosmogenic 10Be exposure techniques indicates a long-term average bedrock …
Management Of Urban Coyotes And Attacks In Green Valley, Pima County, Arizona, Christopher D. Carrillo, Jim Schmidt, David Bergman, Gabriel Paz
Management Of Urban Coyotes And Attacks In Green Valley, Pima County, Arizona, Christopher D. Carrillo, Jim Schmidt, David Bergman, Gabriel Paz
Wildlife Damage Management Conference Proceedings
Coyote (Canis latrans) attacks on humans, once thought to be rare, have increased in frequency over the past decade. In Arizona, the number of wildlife human encounters has increased as our urban environments have expanded into the coyote’s natural environment. Coyotes have learned to utilize drip irrigation, pet food, household refuse, and pets as prey. The problem of potential coyote attacks is magnified when people intentionally feed coyotes. In some situations, coyotes have begun to act aggressively toward humans, chasing joggers/walkers, confronting people walking their dogs, and stalking small children. People who live in areas where coyotes are …
Species Richness And Soil Properties In Pinus Ponderosa Forests: A Structural Equation Modeling Analysis, Daniel C. Laughlin, Scott R. Abella, W. Wallace Covington, James B. Grace
Species Richness And Soil Properties In Pinus Ponderosa Forests: A Structural Equation Modeling Analysis, Daniel C. Laughlin, Scott R. Abella, W. Wallace Covington, James B. Grace
Public Policy and Leadership Faculty Publications
Question: How are the effects of mineral soil properties on understory plant species richness propagated through a network of processes involving the forest overstory, soil organic matter, soil nitrogen, and understory plant abundance? Location: North-central Arizona, USA. Methods: We sampled 75 0.05-ha plots across a broad soil gradient in a Pinus ponderosa (ponderosa pine) forest ecosystem. We evaluated multivariate models of plant species richness using structural equation modeling. Results: Richness was highest at intermediate levels of understory plant cover, suggesting that both colonization success and competitive exclusion can limit richness in this system. We did not detect a reciprocal positive …
Forest-Floor Treatments In Arizona Ponderosa Pine Restoration Ecosystems: No Short-Term Effects On Plant Communities, Scott R. Abella, W. Wallace Covington
Forest-Floor Treatments In Arizona Ponderosa Pine Restoration Ecosystems: No Short-Term Effects On Plant Communities, Scott R. Abella, W. Wallace Covington
Public Policy and Leadership Faculty Publications
Leaf litter accumulation during fire exclusion and increases in tree density in postsettlement southwestern Pinus ponderosa forests may limit the establishment of understory vegetation. We performed an experiment in P. ponderosa forests of northern Arizona to ascertain plant community responses to forest-floor scarification and Oi removal on thirty-six 100-m2 plots overlaid on an existing ecological restoration experiment that involved tree thinning and prescribed burning. Constrasting with findings from many other forest types, forest-floor treatments had no effect on community diversity or composition during the 2-year experiment. Sørensen similarities were as high as 97% between posttreatment years within treatments; and successional …
Current And Historical Use Of Alpha-Chloralose On Wild Turkeys, David Bergman, Brian F. Wakeling, Timothy B. Veenendaal, John D. Eisemann, Thomas W. Seamans
Current And Historical Use Of Alpha-Chloralose On Wild Turkeys, David Bergman, Brian F. Wakeling, Timothy B. Veenendaal, John D. Eisemann, Thomas W. Seamans
United States Department of Agriculture Wildlife Services: Staff Publications
Alpha-chloralose (AC) has been used as an anesthetic since 1897 to capture or sedate wildlife, including waterfowl, wood-pigeon (Columba palumbus), and black bear (Ursus americana). The first use of AC in the United States was for the capture of house sparrows (Passer domesticus), red-winged blackbirds (Agelaius phoeniceus), and wild turkeys (Meleagris gallopavo) in 1964. Prior to the 1990s, AC was not registered by the Food and Drug Administration (FDA) for use as an immobilizing agent in the United States for wild animals that might be used for human consumption. In …