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Book Tree ring Analysis of Second growth Forests in Pennsylvania

Download or read book Tree ring Analysis of Second growth Forests in Pennsylvania written by Robert Long and published by . This book was released on 1987 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book General Technical Report NC

Download or read book General Technical Report NC written by and published by . This book was released on 1981 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Understory Tree Characteristics and Disturbance History of a Central Appalachian Forest Prior to Old growth Harvesting

Download or read book Understory Tree Characteristics and Disturbance History of a Central Appalachian Forest Prior to Old growth Harvesting written by Thomas M. Schuler and published by . This book was released on 1999 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research Paper NE

Download or read book Research Paper NE written by and published by . This book was released on 1987 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book 13th Central Hardwood Forest Conference

Download or read book 13th Central Hardwood Forest Conference written by J. W. Van Sambeek and published by . This book was released on 2003 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Tree Rings

Download or read book Tree Rings written by Richard L. Phipps and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Tree Ring Responses to Climate and Disturbance Across a Topographic Gradient in the Ridge and Valley of Central Pennsylvania

Download or read book Tree Ring Responses to Climate and Disturbance Across a Topographic Gradient in the Ridge and Valley of Central Pennsylvania written by Christopher Bouma and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Global climate has changed dramatically in the last century, much of which occurred in the last four decades. One result of this has been a change in the physiological response of biota. While some organisms adjust to this variation in climate by shifting their range, established trees must endure the new conditions imposed upon them. Recent findings indicate recent warming has resulted in increased radial growth throughout much of the eastern United States. However, this increase may not be ubiquitous across all locations or site types and growth patterns may vary across topographic positions. I measured the dendrochronology (annual tree rings) of two co-occurring yet contrasting tree species, the mesic red oak (Quercus rubra) and the more xeric chestnut oak (Quercus montana). The study sites were located across replicated topographic gradients (lower slope, southeast aspect, northwest aspect, and ridge top) in the Ridge and Valley province of central Pennsylvania. I evaluated radial growth as a function of site type, tree age and diameter, disturbance events, and climate (temperature, precipitation, and Palmer Drought Severity Index (PDSI)). Prior to the 1980s, growth rates on most sites were statistically similar. By the end of the 20th century, however, both species experienced significantly higher basal area increment (BAI) on southeast aspects than northwest sites. Increased growth rate was significantly correlated with increasing tree size. However, this relationship was disproportional across site types indicating other factors influenced growth. Throughout the study period, frequent disturbances from severe storms in the mid-1950s, 1966, and mid-1990s and gypsy moth outbreaks in the 1980s were also noted. Many stand-wide disturbances corresponded with significant climatic events, particularly on southeast aspect sites. Both species exhibited the highest tree ring release frequency on southeast aspects. Red oak and chestnut oak growth was also affected by temperature and precipitation as a function of topographic position, potentially facilitated by differences in disturbance. Red oak was negatively correlated with current year temperatures throughout the study period, particularly on northwest and ridge top sites. In contrast, chestnut oak on southeast and lower slope sites had a positive response to increasing temperature. Moreover, red oak BAI on northwest and ridge top locations were negatively correlated with winter temperatures while chestnut oak BAI was positively correlated with winter temperatures on lower slope and southeast sites. Chestnut oak growth on lower slope and southeast sites was also positively correlated with current year spring temperatures. Previous year precipitation was positively correlated with radial growth for both species on several sites types. Despite some predominant trends, differences in climate correlation did exist among similar sites. A transformed relative BAI (RBAI) produced the most significant climate correlations but with similar patterns to those with BAI and ring width index (RWI). Many environmental interactions and growth impacting factors changed in unison during the life of the study trees, including increasing temperature, precipitation, tree size, and disturbance events, making it difficult to isolate the impact of a single factor. Nevertheless, I conclude that changing climate patterns, including increased temperature, precipitation, and extreme climatic event intensity and frequency have and will continue to non-uniformly affect the growth rates of red oak and chestnut oak as a function of site type variation.

Book Canadian Journal of Forest Research

Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2001 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Tree ring Analysis with Special Reference to Northwest America

Download or read book Tree ring Analysis with Special Reference to Northwest America written by J. Harry G. Smith and published by Vancouver, B.C : [University of British Columbia, Faculty of Forestry]. This book was released on 1970 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Analyses of Great Smoky Mountain Red Spruce Tree Ring Data

Download or read book Analyses of Great Smoky Mountain Red Spruce Tree Ring Data written by and published by . This book was released on 1988 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fundamentals of Tree Ring Research

Download or read book Fundamentals of Tree Ring Research written by James H. Speer and published by University of Arizona Press. This book was released on 2021-11-30 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tree-ring dating (dendrochronology) is a method of scientific dating based on the analysis of tree-ring growth patterns. As author James Speer notes, trees are remarkable bioindicators. Although there are other scientific means of dating climatic and environmental events, dendrochronology provides the most reliable of all paleorecords. Dendrochronology can be applied to very old trees to provide long-term records of past temperature, rainfall, fire, insect outbreaks, landslides, hurricanes, and ice storms--to name only a few events. This comprehensive text addresses all of the subjects that a reader who is new to the field will need to know and will be a welcome reference for practitioners at all levels. It includes a history of the discipline, biological and ecological background, principles of the field, basic scientific information on the structure and growth of trees, the complete range of dendrochronology methods, and a full description of each of the relevant subdisciplines. Individual chapters address the composition of wood, methods of field and laboratory study, dendroarchaeology, dendroclimatology, dendroecology, dendrogeomorphology, and dendrochemistry. The book also provides thorough introductions to common computer programs and methods of statistical analysis. In the final chapter, the author describes "frontiers in dendrochronology," with an eye toward future directions in the field. He concludes with several useful appendixes, including a listing of tree and shrub species that have been used successfully by dendrochronologists. Throughout, photographs and illustrations visually represent the state of knowledge in the field.

Book Size and Age Related Changes in Tree Structure and Function

Download or read book Size and Age Related Changes in Tree Structure and Function written by Frederick C. Meinzer and published by Springer Science & Business Media. This book was released on 2011-06-29 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Millions of trees live and grow all around us, and we all recognize the vital role they play in the world’s ecosystems. Publicity campaigns exhort us to plant yet more. Yet until recently comparatively little was known about the root causes of the physical changes that attend their growth. Since trees typically increase in size by three to four orders of magnitude in their journey to maturity, this gap in our knowledge has been a crucial issue to address. Here at last is a synthesis of the current state of our knowledge about both the causes and consequences of ontogenetic changes in key features of tree structure and function. During their ontogeny, trees undergo numerous changes in their physiological function, the structure and mechanical properties of their wood, and overall architecture and allometry. This book examines the central interplay between these changes and tree size and age. It also explores the impact these changes can have, at the level of the individual tree, on the emerging characteristics of forest ecosystems at various stages of their development. The analysis offers an explanation for the importance of discriminating between the varied physical properties arising from the nexus of size and age, as well as highlighting the implications these ontogenetic changes have for commercial forestry and climate change. This important and timely summation of our knowledge base in this area, written by highly respected researchers, will be of huge interest, not only to researchers, but also to forest managers and silviculturists.

Book General Technical Report NE

Download or read book General Technical Report NE written by and published by . This book was released on 1980 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: