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:
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 Protecting Trees from Sudden Oak Death before Infection written by and published by UCANR Publications. This book was released on with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mapping and Modeling of Sudden Oak Death Symptomatic Coast Live Oak in Five East Bay Regional Parks written by Joshua Joseph O'Neill and published by . This book was released on 2014 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Consequences of Sudden Oak Death written by Letitia Barrett Brown and published by . This book was released on 2007 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Living Among the Oaks A Management Guide for Landowners written by and published by UCANR Publications. This book was released on with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Proceedings of the Fifth Symposium on Oak Woodlands written by and published by . This book was released on 2002 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Living among the Oaks A Management Guide for Landowners and Managers written by D. Mccreary and published by University of California, Agriculture and Natural Resources. This book was released on 2011-02-14 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oak tree is a symbol of all that is solid and reliable, but without proper care and stewardship an oak can be just as fragile as any part of a rangeland ecosystem. Learn how to keep your oak trees healthy so they can benefit generations to come.
Download or read book Oak Management in California written by Timothy R. Plumb and published by . This book was released on 1981 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Local California Bay Distribution on the Risk of Phytophthora Ramorum Canker sudden Oak Death in Coast Live Oak written by Tedmund Julian Swiecki and published by . This book was released on 2007 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sudden Oak Death written by Joseph G. O'Brien and published by . This book was released on 2002 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sudden Oak Death and Phytophthora Ramorum written by and published by . This book was released on 2006 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regenerating Rangeland Oaks in California written by Douglas D. McCreary and published by UCANR Publications. This book was released on 2001 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Refernce Manual for Managing Sudden Oak Dealth in California written by United States Department of Agriculture and published by CreateSpace. This book was released on 2015-06-26 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains background information and guidance for resource management professionals and landowners to understand and manage sudden oak death in California forests. The publication is divided into three chapters: Chapter 1 discusses the epidemiology of SOD in California and includes information on biology of the pathogen Phytophthora ramorum, host-pathogen interactions, disease spread, and environmental conditions that affect disease department. An understanding of these relationships is needed to choose the most appropriate strategies for managing SOD at a given location.
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 A Reference Manual for Managing Sudden Oak Death in California written by Tedmund Julian Swiecki and published by . This book was released on 2013 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains background information and guidance for resource management professionals and landowners to understand and manage sudden oak death (SOD) in California forests. The publication is divided into three chapters: Chapter 1 discusses the epidemiology of SOD in California and includes information on biology of the pathogen Phytophthora ramorum, host-pathogen interactions, disease spread, and environmental conditions that affect disease development. An understanding of these relationships is needed to choose the most appropriate strategies for managing SOD at a given location. Chapter 2 describes how to develop a plan to manage SOD within a stand and how to identify and prioritize areas that may be suitable for SOD management activities. Options for managing SOD are presented by stage in the disease epidemic: before the SOD pathogen has reached a susceptible forest; during the local epidemic, while disease is active in an area and many hosts are still at risk of becoming diseased; and after SOD has killed so many host trees that forest restoration needs to be considered. Chapter 3 provides descriptions of management techniques.
