Download or read book Mechanisms of Range Expansion and Removal of Mesquite in Desert Grasslands of the Southwestern United States written by Thomas B. Wilson and published by . This book was released on 2001 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last 150 years, two species of mesquite trees in the Southwestern United States have become increasingly common in what formerly was desert grassland. These trees have spread from nearby watercourses onto relatively xeric upland areas, decreasing rangeland grass production. Management attempts to limit or reverse this spread have been largely unsuccessful. This paper reviews studies regarding mesquite natural history and management strategies, emphasizing studies published during the past decade. Mesquite possess a deep root system and are capable of fixing atmospheric N, rendering them capable of accessing resources unavailable to other plants in open rangeland. Their seeds, which remain viable for decades, have a hard exocarp and require scarification before germination. Consumption by cattle provides a means of scarification and seed dispersal, and is a major factor contributing to the spread of mesquite in open rangelands. Increases in atmospheric CO2 and winter precipitation during the past century also contribute to enhanced seed germination. Removal techniques have included herbicides, prescribed burning, grazing reduction, and mechanical removal. For increased effectiveness of these techniques, management goals must be clearly articulated; these goals include complete removal, no removal, and limited removal. Of these, limited removal appears the most feasible, using an initial herbicide application followed by periodic prescribed burning.
Download or read book Mechanisms of Range Expansion and Removal of Mesquite in Desert Grasslands of the Southwestern United States written by Thomas B. Wilson and published by . This book was released on 2001 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanisms of Range Expansion and Removal of Mesquite in Desert Grasslands of the Southwestern United States written by Thomas B. Wilson and published by . This book was released on 2001 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Changing Mile Revisited written by Raymond M. Turner and published by University of Arizona Press. This book was released on 2021-10-19 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Changing Mile, originally published in 1965, was a benchmark in ecological studies, demonstrating the prevalence of change in a seemingly changeless place. Photographs made throughout the Sonoran Desert region in the late 1800s and early 1900s were juxtaposed with photographs of the same locations taken many decades later. The nearly one hundred pairs of images revealed that climate has played a strong role in initiating many changes in the region. This new book updates the classic by adding recent photographs to the original pairs, providing another three decades of data and showing even more clearly the extent of change across the landscape. During these same three decades, abundant information about climatic variability, land use, and plant ecology has accumulated, making it possible to determine causes of change with more confidence. Using nearly two hundred additional triplicate sets of unpublished photographs, The Changing Mile Revisited utilizes repeat photographs selected from almost three hundred stations located in southern Arizona, in the Pinacate region of Mexico, and along the coast of the Gulf of California. Coarse photogrammetric analysis of this enlarged photographic set shows the varied response of the region's major plant species to the forces of change. The images show vegetation across the entire region at sites ranging in elevation from sea level to a mile above sea level. Some sites are truly arid, while others are located above the desert in grassland and woodland. Common names are used for most plants and animals (with Latin equivalents in endnotes) to make the book more accessible to non-technical readers. The original Changing Mile was based upon a unique set of data that allowed the authors to evaluate the extent and magnitude of vegetation change in a large geographic region. By extending the original landmark study, The Changing Mile Revisited will remain an indispensable reference for all concerned with the fragile desert environment.
Download or read book Mesquite written by Rodney W. Bovey and published by Texas A&M University Press. This book was released on 2016-09-30 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global problem or treasure? This question has accompanied the widespread and controversial mesquite tree wherever it grows and is studied around the world. In this comprehensive reference to the genus Prosopis, rangeland scientist Rodney Bovey has gathered and synthesized years of research in a book that reflects our current state of knowledge about the biology, morphology, and management of mesquite. Environmentally adaptive, the mesquite is considered by many to be an invasive or a pest species, and Bovey addresses the concerns about mesquite encroachment worldwide. But he also explains its ecological importance in the prevention of erosion and desertification and in providing food and habitat for wildlife. In addition, Bovey traces the uses of mesquite by humans and discusses the economics of growing and harvesting mesquite. A handy guide to the names, locations, distributions, habitat, structure, and uses of several species of mesquite is included in this benchmark publication for ecologists, range managers, biologists, landowners, and students of agriculture and ecosystem science.
Download or read book General Technical Report RMRS written by and published by . This book was released on 1998 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Santa Rita Experimental Range 100 Years 1903 to 2003 of Accomplishments and Contributions written by and published by . This book was released on 2003 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arid Environments and Sustainability written by Hasan Arman and published by BoD – Books on Demand. This book was released on 2018-05-23 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arid environments are basically associated with water scarcity. Therefore, soils will have an extremely low moisture level to support plant and animal life as well as human social life. Sustainability is the long durability of systems and processes within various adapted environmental conditions. Recently, systematic scientific studies on arid environments and sustainability have become more attractive, critical, and sound than the previous years. Sharing such experiences related to different environmental circumstances will absolutely help scientists and decision-makers to have better interpretation of their own environment. By learning lessons, appropriate, fast, and effective approaches require to implement for overwhelming such problems. Such actions will certainly lead to more secure and sustainable environments for plant, animal, and human life.
Download or read book Proceedings RMRS written by and published by . This book was released on 1998 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North American Cornucopia written by Ernest Small and published by CRC Press. This book was released on 2013-09-23 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many North American plants have characteristics that are especially promising as candidates for expanding our food supply and generating new economically competitive crops. This book is an informative analysis of the top 100 indigenous food plants of North America, focusing on those species that have achieved commercial success or have substantial market potential. The book's user-friendly format provides concise information on each plant. It examines the geography and ecology, history, economic and social importance, food and industrial uses, and the economic future of each crop.
Download or read book The Next Step Disentangling the Role of Plant Soil Feedbacks in Plant Performance and Species Coexistence Under Natural Conditions written by Johannes Heinze and published by Frontiers Media SA. This book was released on 2020-09-17 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 2002 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Las Cienegas Resource Management Plan written by and published by . This book was released on 2002 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remote Sensing and GIS Accuracy Assessment written by Ross S. Lunetta and published by CRC Press. This book was released on 2004-07-27 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based upon a special symposium sponsored by the U.S. Environmental Protection Agency (EPA), Remote Sensing and GIS Accuracy Assessment evaluates the important scientific elements related to the performance of accuracy assessments for remotely sensed data, GIS data analysis, and integration products. Scientists from federal, state, and local governments, academia, and nongovernmental organizations present technical papers which examine sampling issues, reference data collection, edge and boundary effects, error matrix and fuzzy assessments, error budget analysis, and change detection accuracy assessment. This compilation contains 20 chapters that represent important symposium outcomes.
Download or read book The Ribbon of Green written by Robert H. Webb and published by University of Arizona Press. This book was released on 2007 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Woody wetlands constitute a relatively small but extremely important part of the landscape in the southwestern United States. These riparian habitats support more than one-third of the regionÕs vascular plant species, are home to a variety of wildlife, and provide essential havens for dozens of migratory animals. Because of their limited size and disproportionately high biological value, the goal of protecting wetland environments frequently takes priority over nearly all other habitat types. In The Ribbon of Green, hydrologists Robert H. Webb, and Stanley A. Leake and botanist Raymond M. Turner examine the factors that affect the stability of woody riparian vegetation, one of the largest components of riparian areas. Such factors include the diversion of surface water, flood control, and the excessive use of groundwater. Combining repeat photography with historical context and information on species composition, they document more than 140 years of change. Contrary to the common assumption of widespread losses of this type of ecosystem, the authors show that vegetation has increased on many river reaches as a result of flood control, favorable climatic conditions, and large winter floods that encourage ecosystem disturbance, germination, and the establishment of species in newly generated openings. Bringing well-documented and accessible insights to the ecological study of wetlands, this book will influence our perception of change in riparian ecosystems and how riparian restoration is practiced in the Southwest, and it will serve as an important reference in courses on plant ecology, riparian ecology, and ecosystem management.
Download or read book Proceedings of Symposium Desert Tortoise Council written by Desert Tortoise Council and published by . This book was released on 2002 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Connecting Mountain Islands and Desert Seas written by and published by . This book was released on 2005 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
