Download or read book A Synthetic Approach to the Plant Ecology of Desert Sand Dunes Eureka Valley California written by Bruce Michael Pavlik and published by . This book was released on 1979 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Biology of Eastern California written by Clarence A. Hall and published by . This book was released on 1988 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of Native and Invasive Non native Plant Species in Desert Sand Dunes of Eureka Valley Death Valley National Park written by Elaine K. Chow and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamics of native and non-native invasive plant species in desert sand dune environments have not been well explored. This is partially due to the isolation of inland dunes. For the same reason, endemism is likely to occur. Thus, invasions of desert dunes pose a large threat to endemic taxa that are confined to these terrestrial islands. One of the most floristically species-rich sand dune ecosystems of western North America is in Eureka Valley, Death Valley National Park. Park managers and conservationists fear that populations of two of the three dune endemics may be vulnerable to the invasion of Salsola gobicola. Furthermore, one of those two vulnerable species, Oenothera californica ssp. eurekensis, is currently listed as federally endangered. Despite a scarcity of reliable monitoring data, the U.S. Fish & Wildlife Service (U.S.F.W.S.) recently proposed to delist the subspecies because the original threat to the population, off-road vehicle usage, was removed. However, solid observational or experimental data on the biological threat of S. gobicola on the dune endemic and other native populations are lacking. The potential impacts of S. gobicola were explored through target-neighborhood approaches (one observational and one experimental) to examine the influences of inter- and intraspecific competitive effects as well as effects of neighbor density in the non-native species and two native species, Crypthantha micrantha and O. californica ssp. eurekensis. The observational field study suggested competition between two abundant populations of annuals, S. gobicola and C. micrantha. Comparisons of natural density gradients of neighbors of S. gobicola, C. micrantha, all species excluding conspecifics, and all species including both study species of interest indicated the latter two variables had the most influence on performance of S. gobicola and C. micrantha targets, respectively. This implies diffuse competition may play a stronger role than inter- and intraspecific competition among the native and non-native annual species observed. A manipulative pot study was conducted with S. gobicola and the perennial, O. californica ssp. eurekensis to directly determine the effects of inter- and intraspecific neighbors, neighbor density and stage class (first- and second-year) of perennial plants on target plant performance of both species. The manipulative study revealed the strongest competitors were the older perennial targets and neighbors in both intra- and interspecific competition. The response to neighbor density on the native species differed between studies; negative and positive effects were observed in the field study and no effect was observed in the manipulative study. However, both studies indicated that S. gobicola was, at best, competitively similar to the competitive effects of the native species. These outcomes on the competitive effects of the invasive species on a common desert annual and a rare endemic species may dispel the bias that invasive species are stronger competitors than rare and native species. To address the scarcity of reliable population data on O. californica ssp. eurekensis for both park managers and the U.S.F.W.S., a monitoring study was implemented in the field. The method of distance-sampling was used for its repeatability, efficiency, accuracy and precision in estimating abundance of rare species. The four-year data set revealed large variability in the spatio-temporal distribution and abundance of the endangered species at multiple scales. Thus, more years of monitoring appears necessary to determine population trends and stability. Nevertheless, these more reliable population estimates and the findings from the competition studies can better inform management strategies of both invasive and sensitive native species. Furthermore, such observational and manipulative studies can improve our understanding of invasions in unique and protected ecosystems like the sand dunes in Eureka Valley.
Download or read book Plants of Desert Dunes written by Avinoam Danin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on three decades of field experience in southwest Asia, southern Africa, and the southwest United States, the author summarizes the major adaptations of plants to desert dunes. This integrative study of plant and diaspore morphology, reactive growth, life cycles, and environmental factors explains and predicts plant distribution. Many kinds of dune syndromes, plant case studies and vegetation transects are discussed and illustrated to clarify the significance of adaptations to specific habitat factors. Although the focus is on vascular plants, the development of microbiotic soil crust, its function, and its composition are discussed as well.
Download or read book Eureka Valley Dunes Recovery Plan written by Mary DeDecker and published by . This book was released on 1982 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calochortus written by and published by . This book was released on 1980 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiological Ecology of North American Desert Plants written by Stanley D. Smith and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following a description of the physical and biological characterization of the four North American deserts together with the primary adaptations of plants to environmental stress, the authors go on to present case studies of key species. They provide an up-to-date and comprehensive review of the major patterns of adaptation in desert plants, with one chapter devoted to several important exotic plants that have invaded these deserts. The whole is rounded off with a synthesis of the resource requirements of desert plants and how they may respond to global climate change.
Download or read book Commencement Ceremony written by University of California, Davis. Graduate Division and published by . This book was released on 1976 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of Desert Plants 3 Development of Plants in the Death Valley National Monument California written by Frits W. Went and published by . This book was released on 1949* with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1982 with total page 2144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North American Rodents written by David J. Hafner and published by IUCN. This book was released on 1998 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive treatment of North American rodents of conservation concern. This action plan summarizes the rodent fauna of North America and provides available information on every rodent taxon that has been considered to be of conservation concern by state, provincial and private conservation agencies and regional experts. It is hoped that the survey provided in this action plan will serve as a common ground for all these parties in drawing up conservation strategies for rodents.
Download or read book A Manual of California Vegetation written by John Orvel Sawyer and published by California Native Plant Society. This book was released on 2009 with total page 1316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seedling Ecology and Evolution written by Mary Allessio Leck and published by Cambridge University Press. This book was released on 2008-09-18 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seedlings are highly sensitive to their environment. After seeds, they typically suffer the highest mortality of any life history stage. This book provides a comprehensive exploration of the seedling stage of the plant life cycle. It considers the importance of seedlings in plant communities; environmental factors with special impact on seedlings; the morphological and physiological diversity of seedlings including mycorrhizae; the relationship of the seedling with other life stages; seedling evolution; and seedlings in human altered ecosystems, including deserts, tropical rainforests, and habitat restoration projects. The diversity of seedlings is portrayed by including specialised groups like orchids, bromeliads, and parasitic and carnivorous plants. Discussions of physiology, morphology, evolution and ecology are brought together to focus on how and why seedlings are successful. This important text sets the stage for future research and is valuable to graduate students and researchers in plant ecology, botany, agriculture and conservation.
Download or read book Deserts Geology and Resources written by Alta Sharon Walker and published by . This book was released on 1992 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book California Riparian Systems written by Richard E. Warner and published by Univ of California Press. This book was released on 1984-01-01 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents 135 of the papers presented at the 1981 California Riparian Systems Conference. The papers address all aspects of riparian systems: habitat, wildlife, land management, land use policy planning, conservation and water resource management.
Download or read book Science as a Way of Knowing written by John Alexander Moore and published by Harvard University Press. This book was released on 1993 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book makes Moore's wisdom available to students in a lively, richly illustrated account of the history and workings of life. Employing rhetoric strategies including case histories, hypotheses and deductions, and chronological narrative, it provides both a cultural history of biology and an introduction to the procedures and values of science.
Download or read book Nature Based Solutions for Wastewater Treatment written by Katharine Cross and published by IWA Publishing. This book was released on 2021-08-15 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are 2.4 billion people without improved sanitation and another 2.1 billion with inadequate sanitation (i.e. wastewater drains directly into surface waters), and despite improvements over the past decades, the unsafe management of fecal waste and wastewater continues to present a major risk to public health and the environment (UN, 2016). There is growing interest in low cost sanitation solutions which harness natural systems. However, it can be difficult for wastewater utility managers to understand under what conditions such nature-based solutions (NBS) might be applicable and how best to combine traditional infrastructure, for example an activated sludge treatment plant, with an NBS such as treatment wetlands. There is increasing scientific evidence that treatment systems with designs inspired by nature are highly efficient treatment technologies. The cost-effective design and implementation of ecosystems in wastewater treatment is something that exists and has the potential to be further promoted globally as both a sustainable and practical solution. This book serves as a compilation of technical references, case examples and guidance for applying nature-based solutions for treatment of domestic wastewater, and enables a wide variety of stakeholders to understand the design parameters, removal efficiencies, costs, co-benefits for both people and nature and trade-offs for consideration in their local context. Examples through case studies are from across the globe and provide practical insights into the variety of potentially applicable solutions.
