Download or read book The Spatial Distribution and Biogeography of Invasive Plants at a Regional and Local Scale in California written by Shawna Jeanette Dark and published by . This book was released on 2003 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Pattern in Invasive Grasses of California written by Meghan J. Skaer Thomason and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasive species may alter their environment in ways that influence their distribution patterns. In particular, positive feedbacks between plant traits and resource use can lead to distinct pattern formation. Plant traits that might interact with their environment include litter chemistry and developmental phenology. The degree to which invasive species may benefit from positive feedback is unknown. Furthermore, there is little detailed information about how demography might be affected by positive feedbacks, or how demography might influence distribution pattern formation. Climate change will likely influence the spread and impact of biological invasions, and interact with distribution pattern. It is important to predict which invasive species will benefit from future changes in climate, and thereby identify those problematic invaders that may need particular attention and prioritization of management efforts. Population demographics are a major indicator of invasion status and a key component needed to develop effective invasive species management strategies or to predict invasive species response to climate change. In the heavily invaded annual grasslands of the California Floristic Province, a biodiversity hotspot, two introduced invasive annual grasses, Elymus caput-medusae and Aegilops triuncialis, form dense stands (patches) interspersed across the landscape. These species have the potential to interact with their environment because of unique, recalcitrant litter chemistry as well as extended phenology that sets them apart from other annual competitors. I investigated the interaction between these invasive annual grasses, their competitors, and their environment with three studies, using observation, modeling, and a field experiment. The observational study aims to understand if E. caput-medusae interacts with its environment in forming patches, or instead responds passively to extant edaphic patterns. To address this aim, I measured demography across two generations, evaluated xylem water stress in E. caput-medusae, and measured edaphic factors across transects within and beyond established E. caput-medusae patches. Findings from this study indicate that demographic parameters vary across a small spatial scale and that E. caput-medusae phenology may lead to spatial "resource banking" of water in dense patches. I developed model based on the Tilman resource competition framework focusing on two groups of species: the invasive Mediterranean cool-season annual grasses and a pair of more recent invaders with a 2-4 week longer growing season (E. caput-medusae and A. triuncialis). I modeled litter feedback as a potential driver of invasion dynamics in California grasslands. Litter feedback in the model was a critical aspect for accurately modeling species range limits because actual species distribution was not modeled well until litter feedback effects were included. For areas with higher annual precipitation, there may be a period of time where restoration techniques like seeding might be especially important for long-term invader control. Finally, I developed a field experiment to understand the interaction of climate change and local-scale patterning on the demography of A. triuncialis. I manipulated rainfall (reduced, ambient, or augmented), seed density (300 or 600 seeds/m2), and local-scale seeding pattern in a full factorial experiment. Demographic and environmental data were collected for three years following initial establishment. Pattern and scale figure prominently in the demographic response of A. triuncialis to rainfall manipulation, where aggregated plantings led to increased reproductive output at two of three scales of observation. These results indicate that increasing the probability of interspecific interactions would likely be detrimental to A. triuncialis infestations, and should factor into developing management strategies.
Download or read book Biogeography of Mediterranean Invasions written by R. H. Groves and published by Cambridge University Press. This book was released on 1991-11-07 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an initiative of a subcommittee of SCOPE (Scientific Committee on Problems of the Environment) which realized that the integrity of many natural ecosystems was being threatened by the ingress of invasive species.
Download or read book Diversity and Ecology of Invasive Plants written by Sudam Charan Sahu and published by BoD – Books on Demand. This book was released on 2019-12-18 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, Diversity and Ecology of Invasive Plants, is a collection of reviewed and relevant research chapters, offering a comprehensive overview of recent developments in the field of invasive species biology. The book comprises chapters authored by various researchers and edited by experts active in the field of conservation of biodiversity. All chapters are complete in itself but united under a common topic. This publication aims at providing a thorough overview of the latest research efforts by international authors on diversity, distribution, and ecological consequences of invasive species and opens new possible research paths for further developments.
Download or read book Invasive Plants of California s Wildlands written by Carla C. Bossard and published by Univ of California Press. This book was released on 2000 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Invasive nonnative plants threaten native species with habitat loss, displacement, and severe population declines, thus seriously reducing biodiversity. Invasive Plants of California's Wildlands is a tremendous source for land managers and others who are interested in protecting the rich natural heritage of California and surrounding states."--John C. Sawhill, President and CEO, The Nature Conservancy
Download or read book Invasive Species written by Andrew P. Robinson and published by Cambridge University Press. This book was released on 2017-06-08 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest risk-based techniques to protect national interests from invasive pests and pathogens before, at and within national borders.
Download or read book Conservation Biogeography written by Richard J. Ladle and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: CONSERVATION BIOGEOGRAPHY The Earth’s ecosystems are in the midst of an unprecedented period of change as a result of human action. Many habitats have been completely destroyed or divided into tiny fragments, others have been transformed through the introduction of new species, or the extinction of native plants and animals, while anthropogenic climate change now threatens to completely redraw the geographic map of life on this planet. The urgent need to understand and prescribe solutions to this complicated and interlinked set of pressing conservation issues has lead to the transformation of the venerable academic discipline of biogeography – the study of the geographic distribution of animals and plants. The newly emerged sub-discipline of conservation biogeography uses the conceptual tools and methods of biogeography to address real world conservation problems and to provide predictions about the fate of key species and ecosystems over the next century. This book provides the first comprehensive review of the field in a series of closely interlinked chapters addressing the central issues within this exciting and important subject.
Download or read book Nonnative Invasive Plants of Pacific Coast Forests written by Andrew N. Gray and published by . This book was released on 2011 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonnative plants affect the composition and function of natural and managed ecosystems and have large economic effects through lost or degraded land use and eradication costs. In spite of their importance, very little comprehensive information on the abundance, distribution, and impact of nonnative invasive plants is available. The objective of this study was to prioritize a list of nonnative invasive plants affecting forest lands in the Pacific coastal states of California, Oregon, and Washington, and provide enough detail in nontechnical language and photos of different stages of plant development to allow reliable identification in the field. Information was synthesized from a variety of national, regional, and state lists, assessments, and botanical guides. The final list was designed to capture species believed to be most prevalent or problematic and to be used for strategic forest inventories like the Forest Inventory and Analysis Program. Identification of the several hundred nonnative invasive species present in the region requires substantial taxonomic experience; a prioritized short list of species with practical identification tips can be a good place for novice botanists and large-scale monitoring efforts to start.
Download or read book Terrestrial Vegetation of California 3rd Edition written by Michael Barbour and published by Univ of California Press. This book was released on 2007-07-17 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This completely new edition of Terrestrial Vegetation of California clearly documents the extraordinary complexity and richness of the plant communities and of the state and the forces that shape them. This volume is a storehouse of information of value to anyone concerned with meeting the challenge of understanding, managing or conserving these unique plant communities under the growing threats of climate change, biological invasions and development."—Harold Mooney, Professor of Environmental Biology, Stanford University "The plants of California are under threat like never before. Traditional pressures of development and invasive species have been joined by a newly-recognized threat: human-caused climate change. It is essential that we thoroughly understand current plant community dynamics in order to have a hope of conserving them. This book represents an important, well-timed advance in knowledge of the vegetation of this diverse state and is an essential resource for professionals, students, and the general public alike."—Brent Mishler, Director of the University & Jepson Herbaria and Professor of Integrative Biology, University of California, Berkeley
Download or read book Vegetation Structure and Function at Multiple Spatial Temporal and Conceptual Scales written by Elgene Owen Box and published by Springer. This book was released on 2016-03-17 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: This commemorative volume of invited papers in vegetation science covers a full range of topics, objectives, methods and applications, including conservation and management tasks. These require study at different temporal and spatial scales, often simultaneously. Methodology is important in science, since it responds to particular questions and raises others. It is also closely related to the scale of investigation. Chapters in this book illustrate this interdependence, even in basic tasks such as vegetation sampling and description, measurements and mapping. Individual chapters present globally applicable systems, regional syntheses and local analyses and applications, plus conceptual methodologies, including currently debated hot topics. Vegetation types treated include tropical rainforests, temperate forests, dry steppes and scrub and local turf, sedge and moss communities. There are also chapters on re-vegetation, woodlot management, ecology of an invasive species, and trajectory planning in conservation. This book will be useful to both students and practitioners, for its reviews and examples and as a potential textbook suitable for graduate-level courses and seminars.
Download or read book Invasive Species in Forests and Rangelands of the United States written by Therese M. Poland and published by Springer Nature. This book was released on 2021-02-01 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.
Download or read book Invasive Plant Ecology i written by Booth, B.D. and published by CABI. This book was released on with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Invasion Control and Distribution of Medusahead Taeniatherum Caput medusae L Nevski in California Grasslands written by Corey Matthew Cherr and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological invasion of ecosystems by alien species is a phenomenon of global importance and can have dramatic effects on ecological services, species diversity and economic productivity across many scales of space and time. Given its biological, physical and socio-economic diversity, California has been particularly impacted by waves of biological invaders. One such invader is medusahead [Taeniatherum caput-medusae (L.) Nevski], an invasive annual grass that infests rangelands in California. Medusahead (Mh) usually reproduces two to four weeks after the other annual grasses and forbs commonly found in California grasslands. Medusahead invasion is often believed to result from some combination of its reproductive timing (which usually occurs two to four weeks after the other annual grasses and forbs commonly found in California grasslands), its relatively low palatability (especially during its late vegetative and reproductive stages) and/or the accumulation of its thatch over time - but these theories have generally not been tested. Additionally, the spatial distribution of Mh across California is not well resolved. As with other invasive species, management of Mh requires an understanding of the ecological processes related to its invasion and control as well as improved knowledge of Mh distribution patterns across the invaded region. Using Mh as an important example, we conducted studies to test (1) the effect of small-scale (10−1 m2) environmental change (accumulation or loss of thatch) on potential for Mh invasion and control, (2) the efficacy of Mh control through field-scale (103-104 m2) changes in grazing management, and (3) the use of remote sensing technologies to determine the intensity of Mh presence across California's Central Valley and surrounding foothills (1011-1012 m2). These studies not only evaluated average effects environmental and management changes on Mh and the total area infested by Mh across the state, but also provided insight into the dynamics of individual small-scale "hotspots" of Mh seed productivity, spatial and temporal "escape" of Mh from grazing treatment within the field scale, and regional "epicenters" of Mh infestation.
Download or read book Invasive Plants written by Wallace Kaufman and published by Stackpole Books. This book was released on 2013-04-01 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identify and understand the plants that are changing the North American landscape forever.
Download or read book Invasive Plants written by Sylvan Ramsey Kaufman and published by Stackpole Books. This book was released on 2007 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full-color illustrated photographs of over 175 species of invasive plants in North America that describes their environmental and economic impact.
Download or read book Invasion Biology written by Mark A. Davis and published by Oxford University Press. This book was released on 2009-01-29 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carefully balanced to avoid distinct taxonomic, ecosystem, and geographic biases, the book addresses a wide range of invasive species (including protists, invertebrates, vertebrates, fungi, and plants), which have been studied in marine, freshwater, and terrestrial environments throughout the world by investigators equally diverse in their origins."--BOOK JACKET.
