DOCSLIB.ORG

Abstracts and Resúmenes

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Abstracts and Resúmenes Abstracts and Resúmenes USDA Forest Service Proceedings RMRS-P-36. 2005. 553 554 USDA Forest Service Proceedings RMRS-P-36. 2005. Posters and Pre-Reviewed Abstracts Presented at the Conference: English and Spanish (some titles and authors are different from the finalized versions) Carteles y Resúmenes Prerrevisados Presentados en la Conferencia: Inglés y Español (algunos títulos y autores son diferente al de las versiones completadas) 1 2 3 2 ALBRECHT, ERIC W. , Brian F. Powell , Don E. Swann , and William L. Halvorson . 1Deceased September 20, 2004; 2USGS Sonoran Desert Research Station and School of Natural Resources, 125 Biological Sciences East, University of Arizona, Tucson, AZ 85721; 3National Park Service, 3693 South Old Spanish Trail, Tucson, AZ 85730; [email protected]. Species richness as an avian community monitoring parameter. Species richness is rarely used as a long-term ecological monitoring parameter, yet it represents many characteristics that are recommended for consideration in parameter selection: it is relevant to most land-management goals, has low natural and sampling variability, and is cost effective. While species richness is less sensitive to environmental change than is abundance, it often responds to significant changes (e.g., habitat fragmentation or loss), and methods used to estimate richness allow estimation of other useful parameters (species distribu- tion, species composition). We used data collected in five national parks in southern Arizona and New Mexico to evaluate the potential of avian species richness as a parameter to detect trends in breeding bird communities. Parks surveyed repre- sent gradients in factors such as elevation, vegetation communities, and park size. We used power analysis to determine the amount of effort required to detect change at a specified level over a given period of time (e.g., a 10% loss in species rich- ness over 5 years). We believe that species richness has strong potential for monitoring birds and other taxa throughout the Madrean Archipelago region, and offer specific monitoring recommendations. La riqueza de especies como parámetro de monitoreo de comunidades de aves. La riqueza de especies rara vez es utilizada como parámetro de monitoreo ecológico de largo plazo, aunque ésta representa muchas características que se reco- miendan para ser consideradas durante la selección de parámetros, por ejemplo: es relevante en la mayoría de los propósitos de manejo de suelos, presenta una baja variabilidad natural y de muestreo y tiene un costo razonable. Mientras que la riqueza de especies es menos sensible a los cambios ambientales que la abundancia, a menudo responde a cambios significativos (e.g., pérdida o fragmentación del hábitat) y los métodos utilizados para estimar riqueza permiten estimar otros parámetros útiles (distribución y composición de especies). Utilizamos datos obtenidos en cinco Parques Nacionales del sur de Arizona y New Mexico para evaluar el potencial de la riqueza de especies de aves como un parámetro para detectar las tendencias de reproducción en comunidades de aves. Los parques estudiados representan gradientes en diversos factores como elevación, comunidades vegetales y tamaño del parque. Utilizamos un análisis de fuerza para determinar la cantidad de esfuerzo necesa- rio para detectar cambios a un determinado nivel por algún periodo de tiempo (e.g., pérdida del 10% en riqueza de especies en un periodo de cinco años). Creemos que la riqueza de especies tiene un fuerte potencial para el monitoreo de aves y otros taxa en la región del Archipiélago Madrense y ofrecemos, también, recomendaciones específicas de monitoreo. 1 2 1 ALFORD, EDDIE J. , and John R. Brock . Tonto National Forest, 2324 E. McDowell Rd., Phoenix, AZ 85006; 2Morrison School of Agribusiness and Resource Management, Arizona State University, 7001 E. Williams Field Road, Mesa, AZ 85212; [email protected]. The effects of fire on Sonoran Desert plant communities. An upward trend in the number of fires has occurred during the past 45 years in the Sonoran Desert on the Tonto National Forest. The effects of fire on Sonoran Desert plant communities were determined by analyzing the influence of anthropogenic and climatic factors on fire regimes, and by measuring the re- covery of plants on a time-since-fire gradient. Native species most impacted by fire were saguaro (Carnegiea gigantea) and foothill paloverde (Cercidium microphyllum). Repeated fires caused an increase in density for purple three-awn (Aristida purpurea) and desert senna (Cassia armada) and a decrease in native species such as saguaro, foothill paloverde, white ratany (Krameria grayi), wolfberry (Lycium spp.), and creosote bush (Larrea tridentada). Los efectos del fuego en las comunidades vegetales del Desierto Sonorense. Durante los últimos 45 años, se ha observado un aumento en los incendios ocurridos en el Desierto Sonorense dentro de la reserva conocida como Tonto National Forest. Los efectos del fuego en las comunidades vegetales del Desierto Sonorense, fueron determinados por medio de un análisis de la influencia de factores antropogénicos y climáticos en los regimenes de incendios y midiendo la recuperación de plantas en un gradiente de tiempo desde la ocurrencia de un incendio. Las especies nativas más impactadas por el fuego fueron el sahuaro (Carnegiea gigantea) y palo verde (Cercidium microphyllum). Incendios sucesivos causaron un aumento en la den- sidad del zacate tres barbas púrpura (Aristida purpurea) y el dais del desierto (Cassia armada), así como una reducción de las especies nativas como el sahuaro, palo verde, cósahui (Krameria grayi), salicieso (Lycium spp.) y gobernadora (Larrea tridentada). USDA Forest Service Proceedings RMRS-P-36. 2005. 555 ANYON, ROGER. Pima County Cultural Resources Office, 201 N. Stone, 7th Floor, Tucson, AZ 85701; roger. [email protected]. Natural landscape as cultural landscapes: the power of place and tradition. The natural landscape of the Madrean Archipelago is a mosaic of cultural landscapes. Throughout human history, people have imbued the natural landscape with meaning. Each culture ascribes meaning to a natural landscape in its own unique way: cultural values and historic cultural context are layered onto the natural world, allowing people to situate themselves in time and space. In southern Arizona, American Indians, Hispanics, and Euro-Americans have all sought to order the natural landscape in their own unique ways. Cultural landscapes contain special places that have power because of their association with important events, people, or critical resources. Some places have importance to a number of cultures, albeit often times for different reasons, while other places may have importance to only one culture. To effectively conserve and protect the Madrean Archipelago, we must un- derstand the complexities and intricacies of the many-storied cultural landscapes layered upon the natural world. This paper, based on research compiled for the Sonoran Desert Conservation Plan, examines natural landscape as cultural landscapes and addresses the implications for natural resources research and management. Specific examples of significant convergent natural and cultural landscapes are provided to illustrate the concepts under discussion. Paisaje natural como paisajes culturales: el poder del lugar y de la tradición. El paisaje natural del Archipiélago de Madrense es un mosaico de paisajes culturales. A lo largo de la historia, la gente ha infundido un significado al paisaje natural. Cada cultura atribuye su propio significado al paisaje natural: los valores culturales y el contexto cultural histórico son colocados sobre el mundo natural, permitiendo que la gente se sitúe asimisma en el tiempo y en el espacio. En el sur de Arizona, los Indios Americanos, los Hispanos, y los Euro-Americanos, han intentado ordenar el paisaje natural bajo sus propias maneras. Los paisajes culturales contienen lugares especiales que tienen poder debido a su asociación con acontec- imientos importantes, con la gente, o con recursos críticos. Algunos lugares tienen importancia para un cierto número de culturas, a menudo debido a diversas razones, mientras que otros lugares pueden tener importancia solamente para una sola cultura. Para conservar y proteger con eficacia el Archipiélago Madrense, debemos entender las complejidades y las com- plicaciones de los muchos paisajes culturales colocados sobre el mundo natural. Esta ponencia, basada en la investigación compilada para el Plan de Conservación del Desierto Sonorense, examina a los paisajes naturales como paisajes culturales, y trata las implicaciones para la investigación y manejo de los recursos naturales. Se proporcionan ejemplos específicos de paisajes naturales y culturales significativamente convergentes para ilustrar los conceptos bajo discusión. 1,2 2 3 1 ARRIAGA, LAURA , Elizabeth Moreno , and Claudia Aguilar . Centro de Investigaciones Biológicas del Noroeste, S.C. Apdo. Postal 128, La Paz, 23000, B.C.S., México; 2CONABIO, Av. Liga Periférico-Insurgentes Sur 4903, Col. Parques del Pedregal, Del. Tlalpan, 14010, México, D.F.; 3Centro Regional de Investigaciones Multidisciplinarias, UNAM. Av. Universidad s/n, Circuito 2, Cuernavaca, 62210, Morelos, México; [email protected]. An overview of the floristic richness and conservation of the arid regions of northern Mexico. The arid and semiarid regions of Northern Mexico harbor diverse, highly endemic, and geographically complex ecosystems. These share topo- graphic and biogeographic similarities
Load more

Recommended publications
  • I GEOSPATIAL SYNTHESIS of GRASSLANDS CONSERVATION
    GEOSPATIAL SYNTHESIS OF GRASSLANDS CONSERVATION INFORMATION Final Report – Sept 30, 2016 Prepared for: Desert Landscape Conservation Cooperative c/o Matthew Grabau Science Coordinator Prepared by: Bird Conservancy of the Rockies Maureen D. Correll Allison Shaw Adrián Quero Arvind Panjabi Greg Levandoski Primary Contact: Maureen Correll 14500 Lark Bunting Lane Brighton, Colorado 80603 [email protected] Suggested citation: Correll, M.D., Shaw, A., Quero, A., Panjabi, A.O., and Levandoski, G. 2016. Geospatial synthesis of grasslands conservation information. Final report. Bird Conservancy of the Rockies, Brighton, Colorado, USA. i BIRD CONSERVANCY OF THE ROCKIES Mission: conserving birds and their habitats through science, education and land stewardship Bird Conservancy of the Rockies conserves birds and their habitats through an integrated approach of science, education and land stewardship. Our work radiates from the Rockies to the Great Plains, Mexico and beyond. Our mission is advanced through sound science, achieved through empowering people, realized through stewardship and sustained through partnerships. Together, we are improving native bird populations, the land and the lives of people. Goals 1. Guide conservation action where it is needed most by conducting scientifically rigorous monitoring and research on birds and their habitats within the context of their full annual cycle 2. Inspire conservation action in people by developing relationships through community outreach and science-based, experiential education
    [Show full text]
  • The Malpai Borderlands Group
    Collaboration in the Borderlands: The Malpai Borderlands Group Item Type text; Article Authors Allen, Larry S. Citation Allen, L. S. (2006). Collaboration in the borderlands: the Malpai borderlands group. Rangelands, 28(3), 17-21. DOI 10.2111/1551-501X(2006)28[17:CITBTM]2.0.CO;2 Publisher Society for Range Management Journal Rangelands Rights Copyright © Society for Range Management. Download date 29/09/2021 16:36:54 Item License http://rightsstatements.org/vocab/InC/1.0/ Version Final published version Link to Item http://hdl.handle.net/10150/639616 Collaboration in the Borderlands: The Malpai Borderlands Group After 10 years of efforts to preserve the open spaces and way of life of the Borderlands Region, the Malpai Borderlands Group is now internationally recognized as an outstanding example of collaborative planning and management of large landscapes. By Larry S. Allen Roots of Change community in New Mexico to join in the discussions, and several points of agreement were discovered. Strongest agreement was in the areas of preservation of open space and As our society is now increasingly polarized on the issues the need to restore fire as a functioning ecological process. It of natural resource use and protection of the environment, was agreed that livestock grazing requires open space and we endeavor to be at the Radical Center. —Bill McDonald that preservation of the ranching industry is important to prevent habitat fragmentation. The Malpai Planning Area includes 2 valleys at an eleva- arly in the 1990s, several neighbors along the tion of about 4,000 feet, which support semidesert grassland Mexican border in Southeastern Arizona and and Chihuahuan desert scrub; 1 higher grassland valley Southwestern New Mexico began to meet period- (about 5,000 feet) with plains grassland; and 2 mountain ically at Warner and Wendy Glenn’s Malpai ranges.
    [Show full text]
  • Grasslands Ecosystems, Endangered Agriculture Species, and Sustainable Ranching Forest Service in the Mexico-U.S
    United States Department of Grasslands Ecosystems, Endangered Agriculture Species, and Sustainable Ranching Forest Service in the Mexico-U.S. Borderlands: Rocky Mountain Research Station Conference Proceedings Proceedings RMRS-P-40 Ecosistemas de Pastizales, Especies en June 2006 Peligro y Ganadería Sostenible en Tierras Fronterizas de México- Estados Unidos: Conferencia Transcripciõnes Basurto, Xavier; Hadley, Diana, eds. 2006. Grasslands ecosystems, endangered species, and sustainable ranching in the Mexico-U.S. borderlands: Conference proceedings. RMRS-P-40. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 126 p. Abstract The semi-arid grasslands in the Mexico-United States border region are relatively intact and provide one of the best opportunities in North America to preserve and nurture an extensive series of grassland ecosystems. The conference was organized to increase appreciation for the importance of the remaining semi-arid grasslands and to create a platform for expanding the integration of natural and social sciences among individuals and organizations. The conference was attended by ranchers, environmentalists, academics, and agency personnel from both nations. Main topics include grassland ecology and biodiversity, management and conservation, and sustainable borderland ranching. Endangered species management, especially of black-tailed prairie dogs (Cynomys ludovicianus), was an important topic. Oral presentations were in English or Spanish, with simultaneous translations, and the papers have been printed in both languages. The conference revealed the ties between ecological processes and environmental conditions in the Borderland grasslands and the cultural and economic priorities of the human communities who depend on them. This recognition should enable interested people and groups to work together to achieve satisfactory solutions to the challenges of the future.
    [Show full text]
  • Environmental Assessment
    San Bernardino and Leslie Canyon National Wildlife Refuges Comprehensive Management Plan 1995 - 2015 Environmental Assessment U. S. Fish and Wildlife Service Region 2 Albuquerque, New Mexico U.S. FISH AND WILDLIFE SERVICE ENVIRONMENTAL ACTION MEMORANDUM Within the spirit and intent of the Council on Environmental Quality's regulations for implementing the National Environmental Policy Act (NEPA) and other statutes, orders, and policies that protect fish and wildlife resources, I have established the following administrative record and have determined that the action of: Implementation of a programmatic Comprehensive Management Plan for the San Bernardino and Leslie Canyon National Wildlife Refuges is a categorical exclusion as provided by 516 DM 6, Appendix 1, Section B(4). No further documentation will be made. is found not to have significant environmental effects as determined by the attached Environmental Assessment and Finding of No Significant Impact. X is found to have special environmental conditions as described in the attached Environmental Assessment. The attached Finding of No Significant Impact will not be fmal nor any actions taken pending a 30-day period for public review (40 CFR 1501.4(e)(2)). is found to have significant effects, and therefore a "Notice of Intent" will be published in the Federal Register to prepare an Environmental Impact Statement before the project is considered further. is denied because of environmental damage, Service policy, or mandate. is an emergency situation. Only those actions necessary to control the immediate impacts of the emergency will be taken. Other related actions remain subject to NEPA review. Other supporting documents: Finding of No Significant Impact, Environmental Assessment for San Bernardino and Leslie Canyon National Wildlife Refuges Comprehensive Management Plan.
    [Show full text]
  • VIA CERTIFIED MAIL RETURN RECEIPT REQUESTED April 30
    VIA CERTIFIED MAIL RETURN RECEIPT REQUESTED April 30, 2010 William H. Clay, Deputy Administrator Ken Salazar, Secretary of the Interior USDA APHIS Wildlife Services U.S. Dept. of the Interior 4700 River Road, Unit 87 1849 C Street, N.W. Riverdale, MD 20737 Washington, D.C. 20240 Sixty-Day Notice of Intent to Sue the U.S.D.A. Animal and Plant Health Inspection Service (APHIS), Wildlife Services program, and the U.S. Fish and Wildlife Service Pursuant to the Endangered Species Act Re: Predator-control activities that may take endangered jaguars (Panthera onca) and ocelots (Felis pardalis). Dear Deputy Administrator Clay and Secretary Salazar, The USDA Animal and Plant Health Inspection Service’s (“APHIS”) Wildlife Services division is hereby notified that the Center for Biological Diversity intends to file suit, pursuant to the citizen suit provision of the Endangered Species Act (“ESA”), 16 U.S.C. § 1540(g), to challenge APHIS Wildlife Services’: (1) failure to avoid jeopardy to the endangered jaguar (Panthera onca) in continuing to rely on the December 6, 1999 amendment to the June 22, 1999 Biological Opinion concerning program activities that may affect the jaguar; (2) failure to consult with the Fish and Wildlife Service over program activities that may affect the ocelot (Felis pardalis) in Arizona; (3) failure to timely reinitiate and complete consultation with the U.S. Fish and Wildlife Service (“FWS”) regarding the impacts of program activities on the jaguar and ocelot; and (5) continued authorization and implementation of activities that may affect jaguars and ocelots prior to the reinitiation and completion of consultation.
    [Show full text]
  • Prehistory and Early History of the Malpai
    Paul R. Fish Suzanne K. Fish CHAPTER 1. Introduction Malpai Borderlands Ecosystem Study crests. These patterns become increasingly summer- Area______________________________ dominant as they move eastward across the study area. Hydrologically, sustained surface water is patchy, oc- The Malpai Borderlands study area is in those por- curring in cienega locations on valley floors and spring tions of southeastern Arizona and southwestern New localities at the edges and in the mountain masses. Interior Mexico that have been biogeographically described as drainage in the San Luis and Playas Valleys create large the Madrean Archipelago (DeBano and others 1994: ephemeral lakes. 580). The area covers approximately 1,600 square miles Because of this biological diversity and because of of the Basin and Range Physiographic Province south intense historic human impacts on the landscape, Federal of the Rocky Mountains and north of the Sierra Madre and State land management agencies and local landowners Occidental (fig 1.1). Arbitrarily bounded on the south by are exploring use of the Malpai Borderlands as a natural the international border with Mexico, it includes large laboratory to develop a comprehensive program of eco- sections of the San Bernardino, San Luis, Animas, and system management. Proposed and ongoing research to Playas Valleys. support this management program includes long-term Low elevations range from about 1,220 m (4,000 ft) in studies of the ecosystem from population, community, the San Bernardino Valley basins to 1,525 m (5,000 ft) in and landscape perspectives and a focus on interactions the Animas Valley and to 1,370 m (4,500 ft) in the Playas between grasses and woody plants in relation to soils, Valley.
    [Show full text]
  • Kimble Ranch Cochise County, Arizona Hidalgo County, New Mexico
    Kimble Ranch Cochise County, Arizona Hidalgo County, New Mexico Offered for sale exclusively by: Con Englehorn Headquarters West, Ltd. 810 N 2nd St. Phoenix, AZ 85020 Phone: (602) 258-1647; Fax (602) 340-0927 www.headquarterswest.com/kimble [email protected] General Description The Kimble Ranch has been owned by the Kimble family for three generations and is one of the reputation ranches in southeastern Arizona/ southwestern New Mexico. It is scenically nestled between the Chiricahua and Peloncilla Mountain ranges at the south end of the San Simon Valley on U.S. Highway 80. 40 miles southwest is historic Douglas , Arizona and the border of Mexico. Rodeo, New Mexico, is 12 miles to the north. The Kimble Ranch and one neighboring ranch share the control of the access from Highway 80 with a locked gate. The Kimble Ranch is part of an area located in what is nationally known as the Malpai Borderlands, thought to be one of the most biologically diverse habitats in North America. Rodeo N.M. and Portal, Arizona, 21 miles northwest of the Ranch are popular locations for birds watchers along with a diverse population of flora and fauna.The presumed location for the surrender of Geronimo is at the end of the Ranch road and the Kimble Ranch owner's rock house was the headquarters for the famous San Simon Cattle Company in the late 1890's. The Ranch is home to numerous Indian ruins, hidden canyons, deer, quail, antelope, and javalina. Due to the natural beauty of the grasslands and mountains it has been the site of numerous commercial photographic features including Marlboro and Arizona Highways.
    [Show full text]
  • Environmental Assessment of the Malpai Borderlands Habitat Conservation Plan ______
    Environmental Assessment of the MALPAI BORDERLANDS HABITAT CONSERVATION PLAN U.S. Fish and Wildlife Service Arizona Ecological Services Office 2321 W. Royal Palm Drive, Ste 103 Phoenix, Arizona 85021-4951 with the assistance of William Lehman 1205 N. Roosevelt Street Boise, Idaho 83706 July 26, 2008 AESO/SE 22410-2006-F-0408 ENVIRONMENTAL ASSESSMENT OF THE MALPAI BORDERLANDS HABITAT CONSERVATION PLAN ______________________________________________________________________________________________________ TABLE OF CONTENTS 1.0 INTRODUCTION AND NEED FOR ACTION ............................................................................................. 1 1.1 INTRODUCTION ............................................................................................................................... 1 1.2 DESCRIPTION OF THE APPLICANT .................................................................................................. 3 1.3 PURPOSE AND NEED FOR THE ACTION ........................................................................................... 3 1.4 DECISION TO BE MADE BY THE RESPONSIBLE OFFICIAL ............................................................... 4 2.0 ALTERNATIVES ................................................................................................................................... 4 2.1 ALTERNATIVE 1: NO ACTION ALTERNATIVE .................................................................................. 4 2.2 ALTERNATIVE 2: PREFERRED ALTERNATIVE AND PROPOSED ACTION ...........................................
    [Show full text]
  • Toward Integrated Research, Land
    This file was created by scanning the printed publication. Errors identified by the software have been corrected; however, some errors may remain. Human Occupation and Ecological Change in the Borderland Region of Arizona/New Mexico/Sonora/Chihuahua: An Analysis of Causes and Consequences Diana Hadley, Senior Editor, Documentary Relations of the Southwest; Thomas E. Sheridan, Ph. D., Curator of Ethnohistory, Arizona State Museum; Peter Warshall, Editor, Ph. D., Whole Earth Magazine his study examines the human impacts that have shaped the nature and rate T of ecological change in the Borderlands region. The study area includes the San Simon, San Bernardino, and Animas valleys, the western portion of the Playas Valley, and the Peloncillo and Animas mountain ranges in Cochise County, Ari­ zona, and Hidalgo County, New Mexico, extending several miles across the inter­ national boundary into contiguous portions of Sonora and Chihuahua. The study covers the period of recorded human occupation, with a strong emphasis on the late nineteenth and early twentieth centuries, the period when human occupation and ecological change were most intense. To assemble data for this study, re­ searchers have examined public records on the federal, state, and county level, private record collections, and published and unpublished sources, including his­ torical diaries and travel accounts. In addition, researchers have conducted oral histories, made on-site visits accompanied by informants, and have used repeat photography to assess change. The full report contains nine chapters, eight maps, over twenty photographs, and eight appendices. Archaeological remains indicate that the San Bernardino, Animas, Playas and San Simon valleys were inhabited during the late Pre-Columbian period, the val­ leys forming migration routes from Sonora and Chihuahua to the Mogollion Rim and the Rio Grande.
    [Show full text]
  • Hydrology of Small Watersheds in Western States
    Hydrology of Small Watersheds in Western States GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1475-1 Prepared as part of the Soil and Moisture Conservation Program of the Department of the Interior Hydrology of Small Watersheds in Western States By H. V. PETERSON HYDROLOGY OF THE PUBLIC DOMAIN i GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1475-1 Prepared as part of the Soil and Moisture Conservation Program of the Department of the Interior UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1962 UNITED STATES DEPARTMENT QF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington 25, D.C. CONTENTS Page Abstract __ _____________________________________________________ 217 Introduction ______________________________________________________ 217 Purpose and scope of the study_______________________________ 219 Location of the study areas.____________________________________ 219 Previous investigations.________________________________________ 222 Acknowledgments ____-_--__________-_--___-_____----__-_______ 222 Measurement of runoff and sediment_______________________________ 223 Criteria used in selecting the reservoirs.__________________________ 223 Reservoir surveys____________________________________________ 223 Methods of measuring runoff and sediment_______________________ 224 Relief ratios__________________________________________________ 227 Compilation of measurements________________________-__-__-__-_ 227 Missouri River basin_____________________________________________
    [Show full text]
  • Prehistory and Early History of the Malpai
    Guadalupe Sanchez de Carpenter A.C. MacWilliams CHAPTER 2. Borderlands Environment, Past and Present The major mountain ranges in the study area today were studies, palynology, and analyses of packrat (Neotoma produced by Middle Miocene and younger extensional sp.) middens. Climatic reconstructions from tree-ring faulting. Faulting continued into the late Pleistocene data would be especially useful for archaeological as evidenced by fault scarps along the margins of the studies; important new data encompassing much of the Animas, Hachita, and Playas Valleys. These long-term late prehistoric archaeological record for the Malpai geologic events resulted in the present basin and range Borderlands will soon be made available by Thomas physiography of the Malpai Borderlands, as summarized Swetnam and his students. by Hawley (1993). Each approach to climatic reconstruction derives from The area is classified as Mexican Highland within the a different body of information and provides a different Basin and Range Province. Basins below 1,525 m (4,600 perspective on change. Interpretations may be contradic- ft) form the bulk of the Chihuahuan Desert region in the tory because of the spotty nature of databases, differing Mexican Highland Section (Hawley 1993: 40). Broad theoretical perspectives, and the lack of an integrated intermontane basins often drain internally into playas. effort to reconstruct past environment. Furthermore, it Integrated drainages exist only in the San Bernardino may not be possible to relate climatic reconstructions Valley, which drains into the Rio Yaqui system to the directly to potential behavioral responses reflected in south, and in nearby areas such as the Gila River drainage the archaeological records.
    [Show full text]
  • United States Department of the Interior Bureau of Land Management Safford Field Office Safford, AZ
    United States Department of the Interior Bureau of Land Management Safford Field Office Safford, AZ Environmental Assessment DOI-BLM-AZ-G010-2013-0019-EA Ash Peak Permit Renewal 1 Contents 1.0 Introduction ........................................................................................................................... 4 1.1 Background ............................................................................................................................ 4 1.2 Purpose and Need .................................................................................................................. 4 1.3 Decision to be made ............................................................................................................... 5 1.4 Conformance with Land Use Plan: ........................................................................................ 5 1.4.1 RMP Decision Number and Narrative ............................................................................ 6 1.5 Relationship to Statutes, Regulations or Other Plans or Policies: ......................................... 7 1.6 Scoping .................................................................................................................................. 8 1.6.1 Issues Identified .............................................................................................................. 9 2.0 Proposed Action and Alternatives ........................................................................................ 9 2.1 Design Features Common to Proposed Action
    [Show full text]