Download or read book Detection and Ecology of Sudden Oak Death written by Frances Seton Ockels and published by . This book was released on 2006 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Phytophthora ramorum, the causal agent of Sudden Oak Death, is a recently discovered disease, which was first observed killing tanoaks in Mann County, California in the mid 1 990s. Since then the pathogen has been found in fourteen coastal counties in California and one southwestern county in Oregon and has killed thousands of oaks and tanoaks in forests and urban-forest interfaces. In these areas, the pathogen is having a dramatic ecological impact by changing resource availability upon which many invertebrates and vertebrates depend. Additionally, P. ramorum infects a large variety of ornamental plants that are common in the nursery industry. Many of the host species of P. ramorum are widely distributed by nurseries in California, Oregon, and across the U.S. The disease could spread across the U.S. by transporting nursery stock infected with P. ramorum. A single escape from an infested nursery into surrounding woodlands or forests in areas potentially conducive to development of the disease could be devastating. Due to the imminent threat of the pathogen spreading and to the limited knowledge of the relatively newly discovered pathogen, this research had two main objectives. The first objective was to monitor the spread of P. ramorum in the eastern U.S., while the second objective was to investigate ecological aspects of the disease in the forests of California by examining the response of coast live oaks and ambrosia beetles to P. ramorum infection. The spread ofF. ramorum was monitored through our participation in the U.S. Forest Service National Phytophthora ramorum Survey of Forest Environments in 2004 and 2005. The survey focused on prevention of spread of P. ramorum through early detection of the pathogen in nursery and forest settings. In 2004, 110 sites were surveyed in the North Central region and 620 samples were processed and analyzed, while in 2005, 168 sites were surveyed with 263 samples processed and analyzed. The results for the 2004 and 2005 surveys conducted in Ohio, Indiana, Iowa, Illinois, Missouri, and Wisconsin showed that the areas surveyed were P. ramorum free. The second part of this research investigated P. ramorum infected coast live oaks in the native oak woodlands of California. Specifically, the defense responses of oaks infected with P. ramorum were investigated. Additionally, the affect of Cambistat treatment on the defense responses of P. ramorum infected and healthy coast live oaks was examined. Tissue of infected and healthy coast live oaks not treated with Cambistat and tissue of infected and healthy coast live oaks treated with Cambistat were sampled, extracted, and analyzed by High Pressure Liquid Chromatography (HPLC) for the identification of pathogen induced secondary metabolites. Five secondary metabolites, gallic acid, tyrosol, and three unknown compounds were identified as being present in different amounts in sampled phloem, suggesting that at least some of these compounds might be associated with resistance to this pathogen. Furthermore, a new association between opportunistic ambrosia beetles and bleeding cankers on coast live oaks infected with P. ramorum was investigated. It is unknown how ambrosia beetles select oaks infected with P. ramorum for colonization. The goal of this part of the study was to identify volatile chemicals emitted from bleeding cankers that might be involved in attracting beetles to the diseased oaks. Volatiles were collected using Solid Phase Microextraction (SPME) fibers from vials containing bark exudate typical of P. ramorum-infected trees, infected phloem, and healthy phloem. The volatile compounds were analyzed by Gas Chromatography- Mass Spectrometry (GCMS). Eight phenolic compounds, 4-ethylphenol, 4-ethylguaiacol, 4-propylguaiacol, ethyihexanol, isooctyl mercaptoacetate, tyrosol, N-acetyltyramine, and antiarol were identified by comparing their mass spectra to two libraries, the Wiley Registry of Mass Spectral Data and the Nist Library. Future research, such as trapping experiments and coupled gas chromatography -- electroantennographic detection (GC-EAD) will determine if these compounds are behaviorally active.
Download or read book Sudden Oak Death Second Science Symposium written by and published by . This book was released on 2004 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Sudden Oak Death Fourth Science Symposium written by Susan J. Frankel and published by CreateSpace. This book was released on 2012-10 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudden oak death (SOD), caused by Phytophthora ramorum, was first discovered in Oregon forests by aerial survey in July 2001. Since then an interagency team has been working with landowners to eradicate the pathogen by cutting and burning all infected and nearby host plants. The Oregon SOD program now consists of the following elements: early detection; delimitation of infested areas; treatment; research and monitoring; and host reduction in areas of probable disease spread. The Sudden Oak Death Fourth Science Symposium provided a forum for current research on sudden oak death. Ninety submissions describing papers or posters on the following sudden oak death/P. ramorum topics are included: biology, genetics, nursery and wildland management, monitoring, ecology, and diagnostics.
Download or read book Proceedings of the Sudden Oak Death Fifth Science Symposium written by United States Department of Agriculture and published by CreateSpace. This book was released on 2015-06-26 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Proceedings of the Sudden Oak Death Fifth Science Symposium provides and update on research to address sudden oak death, caused by the exotic, quarantine pathogen, Phytophtora ramorum. Over 60 submissions present national and international investigations covering pathogen biology, biosecurity, genetics, monitoring, fire ecology, and diagnosis.
Download or read book Ecological and Chemical Aspects of White Oak Decline and Sudden Oak Death written by Annemarie Margaret Nagle and published by . This book was released on 2009 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finally, recent U.S.-wide surveys for P. ramorum have led to detection and geolocation of known and novel Phytophthora spp. Isolation information, genetic analyses, and pathogenicity tests with a suspected novel species closely related to P. gallica are presented.
Download or read book Sudden Oak Death and Phytophthora Ramorum written by John Kliejunas and published by CreateSpace. This book was released on 2010-09-01 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudden oak death and Phytophthora ramorum, both first recognized about a decade ago, have been the subject of hundreds of scientific and popular press articles. This document presents a comprehensive, concise summary of sudden oak death and P. ramorum research findings and management activities. Topics covered include introduction and background, identification and distribution, the disease cycle, epidemiology and modeling, management and control, and economic and environmental impacts. U.S. Department of Agriculture, Forest Service. Includes discussion of: Causal Agent, Distribution, Hosts, Diagnosis, The Disease Cycle, Modeling Disease Distribution and Spatial-Temporal, Patterns of Mortality, Management and Control, Economic and Environmental Impacts of Phytophthora ramorum.
Download or read book Early Detection of Sudden Oak Death Based on Foliar Hosts written by Kelly E. Buja and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An early detection methodology was developed to detect Phytophthora ramorum, the pathogen responsible for causing sudden oak death, at a landscape level prior to symptoms of overstory mortality.
Download or read book Predicting Sudden Oak Death Transmission Hosts in Redwood National and State Parks Using Ecological Niche Models written by Janelle Breton Deshais and published by . This book was released on 2010 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Sudden Oak Death Third Science Symposium written by and published by . This book was released on 2008 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sudden Oak Death Third Science Symposium provided a forum for current research on sudden oak death, caused by the exotic, quarantine pathogen, Phytophthora ramorum. One hundred and seventeen submissions describing papers and posters on the following sudden oak death/ P. ramorum topics are included: biology, genetics, nursery, and wildland management, monitoring, ecology, and diagnostics.
Download or read book Sudden Oak Death written by and published by . This book was released on 2001 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology and Silviculture of Oaks 3rd Edition written by Paul S Johnson and published by CABI. This book was released on 2019-04-10 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of The Ecology and Silviculture of Oaks is an updated and expanded edition that explores oak forests as responsive ecosystems. New chapters emphasize the importance of fire in sustaining and managing oak forests, the effects of a changing climate, and advanced artificial regeneration techniques. This new edition expands on silvicultural methods for restoring and sustaining oak woodlands and savannahs, and on management of ecosystem services, including wildlife habitat. It also incorporates new material on evaluating landscape-scale, and cumulative effects of management action compared with inaction. Nine of the fifteen chapters cover updated information on the geographic distribution of US oaks, oak regeneration dynamics, site productivity, stocking and stand development, even- and uneven-aged silvicultural methods, and growth and yield. This edition includes a new section with colour illustrations for improved visualization of complex relationships. This book is intended for forest and wildlife managers, ecologists, silviculturists, environmentalists, and students of those fields.
Download or read book Fungal Diseases written by Institute of Medicine and published by National Academies Press. This book was released on 2011-10-08 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fungal diseases have contributed to death and disability in humans, triggered global wildlife extinctions and population declines, devastated agricultural crops, and altered forest ecosystem dynamics. Despite the extensive influence of fungi on health and economic well-being, the threats posed by emerging fungal pathogens to life on Earth are often underappreciated and poorly understood. On December 14 and 15, 2010, the IOM's Forum on Microbial Threats hosted a public workshop to explore the scientific and policy dimensions associated with the causes and consequences of emerging fungal diseases.
Download or read book The Tanoak Tree written by Frederica Bowcutt and published by University of Washington Press. This book was released on 2015-06-08 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tanoak (Notholithocarpus densiflorus) is a resilient and common hardwood tree native to California and southwestern Oregon. People’s radically different perceptions of it have ranged from treasured food plant to cash crop to trash tree. Having studied the patterns of tanoak use and abuse for nearly twenty years, botanist Frederica Bowcutt uncovers a complex history of cultural, sociopolitical, and economic factors affecting the tree’s fate. Still valued by indigenous communities for its nutritious acorn nut, the tree has also been a source of raw resources for a variety of industries since white settlement of western North America. Despite ongoing protests, tanoaks are now commonly killed with herbicides in industrial forests in favor of more commercially valuable coast redwood and Douglas-fir. As one nontoxic alternative, many foresters and communities promote locally controlled, third-party certified sustainable hardwood production using tanoak, which doesn’t depend on clearcutting and herbicide use. Today tanoaks are experiencing massive die-offs due to sudden oak death, an introduced disease. Bowcutt examines the complex set of factors that set the stage for the tree’s current ecological crisis. The end of the book focuses on hopeful changes including reintroduction of low-intensity burning to reduce conifer competition for tanoaks, emerging disease resistance in some trees, and new partnerships among tanoak defenders, including botanists, foresters, Native Americans, and plant pathologists. Watch the book trailer: https://www.youtube.com/watch?v=xzY7QxOiI8I
Download or read book Proceedings of the Sudden Oak Death Fifth Science Symposium written by Susan J. Frankel and published by . This book was released on 2013 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Proceedings of the Sudden Oak Death Fifth Science Symposium provides an update on research to address sudden oak death, caused by the exotic, quarantine pathogen, Phytophthora ramorum. Over 60 submissions present national and international investigations covering pathogen biology, biosecurity, genetics, monitoring, fire ecology, and diagnostics. Several papers on disease status and progress toward nursery and wildland management are also included.
Download or read book Development of Geospatial Techniques for Ecological Analysis written by Qinghua Guo and published by . This book was released on 2005 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Pathology and Plant Health written by Matteo Garbelotto and published by MDPI. This book was released on 2018-04-13 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Forest Pathology and Plant Health" that was published in Forests
Download or read book Long term Growth Sudden Oak Death Assessment and Economic Viability of Coast Live Oak in Three California Counties written by and published by . This book was released on 2004 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
