Download or read book The Demographic Genetics of an Appalachian Stand of Liriodendron Tulipifera L written by Milton Kanashiro and published by . This book was released on 1990 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Temporal and spatial genetic comparisons were made in an appalachian stand of Liriodendron tulipifera L. (tulip tree). The population was stratified into five age clsses, and allele frequencies were tested by homogeneity chi-square test within and among plots. The homogeneity in allee frequencies were also evaluated for plot and subplot differences, et different age levels. Results revealed that the population of tulip tree is structured in time and space: however, neither one was recognized as a result of the natural selection process. The lack of consistent patterns for differences in allele frequencies for age classes does not support evidence of selection. One possible constraint ay be the presence of rare alleles. Another explanation may be the presencebetween genetic and statistical sampling at different life cycle stages. The susbstructure in space in much stronger than in time significant differences in allele frequencies at different coli for plts within age classes suggest that the population in substructure at the subplot level. The substructure is more likely to be associated with the epecies'reproductive biological characteristics such as mixed mating systems, and/or limited gene flow.

Download or read book Population Genetic Differentiation Mating System and Effective Population Size of the Tuliptree Liriodendron Tulipifera L in the Mid Atlantic United States written by Ricardo Gutierrez Ozuna and published by . This book was released on 2017 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1 describes the development and validation of novel L. tulipifera genomic microsatellite (SSR) genetic marker loci using high-throughput sequencing and bioinformatics methods. These new SSR markers facilitated empirical study of population genetic patterns in L. tulipifera. Chapter 2 compares the population genetic differentiation and the mating system among old-growth forests and urban forest patches. L. tulipifera population genetic differentiation in the mid-Atlantic U.S. was characterized by a pattern of isolation by distance (IBD), suggesting that urbanization has not had a major impact on regional genetic differentiation patterns which have evolved over hundreds of generations in the past. Despite marked environmental differences between old-growth and urban forest, all populations shared a fully outcrossed mating system without any variation in self-fertilization that can accompany loss of pollinators. Chapter 3 compares the strength of random genetic drift estimated from the effective number of breeders (Nb) from seedlings and from mixed-age reproductively mature trees (Ne {mixed ages}). These two sampling methods showed similar and small effective population sizes, suggesting genetic drift is a major determinant of polymorphism within populations and of genetic differentiation among populations.

Download or read book Forestry Theses Accepted by Colleges and Universities in the United States July 1981 June 1990 written by and published by . This book was released on 1994 with total page 368 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 1990 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1989 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Leaf Biomass in Thinned Yellow poplar Liriodendron Tulipifera L Stands in Relation to Stemwood Growth and Other Stand Characteristics written by David Frederick Olson and published by . This book was released on 1970 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of the Genetics of Seedling Characteristics of Yellow poplar Liriodendron Tulipifera L by Means of a Diallel Crossing Scheme written by Kingsley Arter Taft and published by . This book was released on 1965 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annotated Bibliography of Publications on Watershed Management and Ecological Studies at Coweeta Hydrologic Laboratory 1934 1994 written by and published by . This book was released on 1994 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Areas Journal written by and published by . This book was released on 1998 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1966 with total page 1488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliographic Series written by Oregon. Library. Forest Research Laboratory and published by . This book was released on 1979 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Bibliography 1981 84 Indexes written by and published by . This book was released on 1985 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Southern Appalachians written by Susan L. Yarnell and published by DIANE Publishing. This book was released on 1998 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Theses Accepted by Colleges and Universities in the United States written by and published by . This book was released on 1978 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 1990 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Climate Change Adaptation and Mitigation Management Options written by James M. Vose and published by CRC Press. This book was released on 2013-12-05 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest land managers face the challenges of preparing their forests for the impacts of climate change. However, climate change adds a new dimension to the task of developing and testing science-based management options to deal with the effects of stressors on forest ecosystems in the southern United States. The large spatial scale and complex interactions make traditional experimental approaches difficult. Yet, the current progression of climate change science offers new insights from recent syntheses, models, and experiments, providing enough information to start planning now for a future that will likely include an increase in disturbances and rapid changes in forest conditions. Climate Change Adaptation and Mitigation Management Options: A Guide for Natural Resource Managers in Southern Forest Ecosystems provides a comprehensive analysis of forest management options to guide natural resource management in the face of future climate change. Topics include potential climate change impacts on wildfire, insects, diseases, and invasives, and how these in turn might affect the values of southern forests that include timber, fiber, and carbon; water quality and quantity; species and habitats; and recreation. The book also considers southern forest carbon sequestration, vulnerability to biological threats, and migration of native tree populations due to climate change. This book utilizes the most relevant science and brings together science experts and land managers from various disciplines and regions throughout the south to combine science, models, and on-the-ground experience to develop management options. Providing a link between current management actions and future management options that would anticipate a changing climate, the authors hope to ensure a broader range of options for managing southern forests and protecting their values in the future.

Download or read book Ecology Abstracts written by and published by . This book was released on 1993 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt: