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Seasonal Air And Soil Temperature Effects On Photosynthesis In Red Spruce Picea Rubens Sarg Saplings
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Book Synopsis Seasonal Air and Soil Temperature Effects on Photosynthesis in Red Spruce ('Picea Rubens' Sarg.) Saplings by : Paul Andrew Schwarz
Download or read book Seasonal Air and Soil Temperature Effects on Photosynthesis in Red Spruce ('Picea Rubens' Sarg.) Saplings written by Paul Andrew Schwarz and published by . This book was released on 1996 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Response of Red Spruce (Picea Rubens Sarg.) to Nitrogen Fertilization as Affected by Soil, Thinning, and Application Rate by : Robert K. Shepard
Download or read book Response of Red Spruce (Picea Rubens Sarg.) to Nitrogen Fertilization as Affected by Soil, Thinning, and Application Rate written by Robert K. Shepard and published by . This book was released on 1987 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and Decline of Red Spruce in the Eastern United States by : Mary B. Adams
Download or read book Ecology and Decline of Red Spruce in the Eastern United States written by Mary B. Adams and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the early 1980s there were several published reports of recent, unexplained increases in mortality of red spruce in the Adirondack Mountains and the northern Appalachian Mountains of the eastern United States. These reports coincided with documentation of reductions in radial growth of several species of pine in the southeastern United States, and with the severe, rapid, and widespread decline of Norway spruce, silver fir, and some hardwoods in central Europe. In all of these instances, atmospheric deposition was hypothesized as the cause of the decline. (Throughout this volume, we use the term "decline" to refer to a loosely synchronized regional-scale deterioration of tree health which is brought about by a combination of stress factors. These may be biotic or abiotic in nature, and the combinations may differ from site to site. ) Heated public debate about the causes and possible cures for these forest declines ensued. Through the course of this debate, it became clear that information about forest health and air pollution effects on forests was inadequate to meet policymakers' needs. Ecology and Decline of Red Spruce in the Eastern United States addresses that gap for eastern spruce fir forests and represents the culmination of a great deal of research conducted in recent years. The focus is on red spruce because the decline of red spruce was both dramatic and inexplicable and because of the great amount of information gathered on red spruce.
Book Synopsis Ordonnance de Monseigneur l'intendant de la généralité de Lyon, qui condamne le nommé Pierre Girin, soldat provincial pour la paroisse de Ranchal, à servir huit années dans les troupes provinciales de cette généralité, au-delà des six années qu'il devoit servir comme soldat su sort. Du 9 décembre 1786. (signée Terray). by :
Download or read book Ordonnance de Monseigneur l'intendant de la généralité de Lyon, qui condamne le nommé Pierre Girin, soldat provincial pour la paroisse de Ranchal, à servir huit années dans les troupes provinciales de cette généralité, au-delà des six années qu'il devoit servir comme soldat su sort. Du 9 décembre 1786. (signée Terray). written by and published by . This book was released on 1786 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology Abstracts written by and published by . This book was released on 1998 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
Book Synopsis Conifer Cold Hardiness by : F.J. Bigras
Download or read book Conifer Cold Hardiness written by F.J. Bigras and published by Springer Science & Business Media. This book was released on 2001 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conifer Cold Hardiness provides an up-to-date synthesis by leading scientists in the study of the major physiological and environmental factors regulating cold hardiness of conifer tree species. This state-of-the-art reference comprehensively explains current understanding of conifer cold hardiness ranging from the gene to the globe and from the highly applied to the very basic. Topics addressed encompass cold hardiness from the perspectives of ecology, ecophysiology, acclimation and deacclimation, seedling production and reforestation, the impacts of biotic and abiotic factors, and methods for studying and analyzing cold hardiness. The content is relevant to geneticists, ecologists, stress physiologists, environmental and global change scientists, pathologists, advanced nursery and silvicultural practitioners, and graduate students involved in plant biology, plant physiology, horticulture and forestry with an interest in cold hardiness.
Book Synopsis Season and Drainage Class Effects on Foliar Nutrient Concentrations of Red Spruce (Picea Rubens Sarg.) Advance Regeneration by : Alice M. Goodwin
Download or read book Season and Drainage Class Effects on Foliar Nutrient Concentrations of Red Spruce (Picea Rubens Sarg.) Advance Regeneration written by Alice M. Goodwin and published by . This book was released on 1988 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluating the Influence of Disturbance and Climate on Red Spruce (Picea Rubens Sarg.) Community Dynamics at Its Southern Range Margin by : Relena Rose Ribbons
Download or read book Evaluating the Influence of Disturbance and Climate on Red Spruce (Picea Rubens Sarg.) Community Dynamics at Its Southern Range Margin written by Relena Rose Ribbons and published by . This book was released on 2011 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Picea rubens(red spruce) populations experienced a synchronous rangewide decline in growth and vigor starting in the 1960's, which was likely caused by climate change or environmental disturbances (e.g., acid deposition); However, it is yet unknown if populations continue to decline or have recovered. In the context of global warming, red spruce is a species of concern because it is at its southern continuous range margin in Massachusetts. This study uses tree-ring data coupled with population data from permanent plots to quantify the status of red spruce in Massachusetts. Tree cores were extracted from red spruce and used to examine radial growth rates, determine a growth-climate relationship, and document disturbance events. Red spruce at these plots ranged from 90 to 184 years old, and comprised 15 to 29 m2/ha-1 basal area. Over the past 50 years, red spruce has decreased in density, basal area, and relative importance while red maple, yellow birch, and American beech have increased. Red spruce saplings persisted in some plots, but the sapling layer was comprised mostly of American beech or red maple. However, red spruce seedlings were common at red spruce dominant plots indicating that if favorable conditions occur, it could return to its more dominant position in the canopy. Dendroclimatological analyses show that red spruce is sensitive to both temperature and precipitation. Most sites are correlated with temperature, while only two forests were correlated to precipitation. The general temperature response of the red spruce studied was positively correlated with winter temperatures while the general precipitation response was negatively correlated with precipitation. Temporal analysis of the climate-growth response indicates that red spruce here have not had a temporally-stable, climate-growth relationship. Prior to 1960, radial growth was positively correlated with temperatures from November of the previous growing season to January of the current year. After 1960, all sites showed a shift in growth responses consistent with increased summer temperature stress; narrowed tree rings were formed during warm temperatures in July and August. Precipitation remained relatively constant over the past century, while temperatures have increased up to 2°C across the study area. Of the two precipitation-sensitive forests, one forest shifted from being positively correlated with current January precipitation to negatively correlated with previous October precipitation while the second forest showed a strong positive relationship with August precipitation. Because the radial growth of red spruce here are mostly constrained by temperatures, there has been negative growth response to regional warming and precipitation has been stable, I suggest the change in climate response is potentially due to warming and a physiological threshold response to increasing temperatures. Interestingly, disturbance frequency and intensity have increased over the same time period, which could be either a trigger or a response to the shift in the growth-climate relationship.
Book Synopsis Resource Physiology of Conifers by : William K. Smith
Download or read book Resource Physiology of Conifers written by William K. Smith and published by Academic Press. This book was released on 2013-10-22 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coniferous forests are among the most important of ecosystems. These forests are widespread and influence both the financial and biological health of our globe. This book focuses attention on conifers and how these trees acquire, allocate, and utilize the resources that sustain this crucial productivity. An international team of experts has surveyed and synthesized information from an expanding area of inquiry. The first half of the book describes how resources are acquired both by means of photosynthesis and through root systems. The latter half of the volume focuses upon how resources are stored and used. As conifers continue as a resource and ever increasingly important contributor to the regional and global environmental sustainability, this book will help establish how much sustainability can be expected and maintained.
Book Synopsis Proceedings of the US/FRG Research Symposium by :
Download or read book Proceedings of the US/FRG Research Symposium written by and published by . This book was released on 1989 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Climate Responses of Red Spruce (Picea Rubens Sarg.) and Its Associated Forest Community Along Elevational Gradients in the Northeastern United States by : Brittany Verrico
Download or read book Climate Responses of Red Spruce (Picea Rubens Sarg.) and Its Associated Forest Community Along Elevational Gradients in the Northeastern United States written by Brittany Verrico and published by . This book was released on 2021 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The composition of forest communities and the distributions of individual tree species are both strongly tied to climatic conditions through species-specific physiological tolerances to the abiotic environment. As a result, spatial and temporal variation in climate, both natural and anthropogenically induced, exert strong influence on tree species distributions and their adaptations to local conditions. In order for trees, which are sessile, to persist in a rapidly changing environment, genetic variation and/or phenotypic plasticity must be maintained to facilitate adaptive evolution. While strong local adaptation to current climate has been reported for trees sampled across broad spatial landscapes (e.g., latitude), few studies have investigated microgeographic adaptation, or adaptation occurring within the dispersal neighborhood, despite the common occurrence of tree populations distributed across steep fine-scale environmental gradients (e.g., elevation). Understanding the spatial scale of local adaptation and the capacity for adaptive evolution is a key issue under ongoing climate change, as many forest tree species become exposed to climate conditions outside of their current adaptive optima. In this dissertation, I used multidisciplinary approaches to investigate how climate shapes biodiversity across and within forest tree species. I utilized a long-term forest tree inventory dataset to examine how species composition along an elevational climate gradient in the northeastern United States has responded to anthropogenic environmental change. I found that complex species-specific responses have led to an overall reduction in beta diversity in recent years, yielding a more homogeneous community, with the combined effects of sulphate deposition and warming temperatures being the two main drivers of this change. To assess how intraspecific diversity responds to this elevational climate gradient, I focused on red spruce (Picea rubens Sarg.), a coniferous tree abundant in high elevation spruce-fir forests of Vermont and other cool, mountainous locales throughout eastern North America. Utilizing population genetic techniques, I found limited genetic structure in red spruce populations along elevational gradients, pointing to extensive gene flow. However, divergent selection between elevations has been strong enough to overcome high gene flow, allowing for local climatic adaptation in quantitative traits such as bud phenology and cold tolerance. Finally, I established a common garden study replicated along an elevational gradient of planting sites to test the spatial scale at which local adaptation to climate and phenotypic plasticity occurs and quantified genetic variation for these processes. Significant heritable genetic variation was found for both local adaptation and phenotypic plasticity in families collected from fine- and broad-spatial scales for bud phenology and growth-related traits. Using the transfer distance between family source and planting site climates to predict the response of functional traits, I found strong evidence of local adaptation to source climate shaping bud phenology traits among broad-scale families yet impacts of transfer distance on overall early-life fitness were weak at both spatial scales. The magnitude of performance and bud phenology plasticity was similar between spatial scales, and plasticity in phenology traits (from either scale) did not confer a performance advantage. Altogether, this work advances our understanding of how climate influences both the forest and the trees, at timescales spanning decades, and at spatial scales from hundreds of kilometers to the bottom versus the top of the same mountain. Understanding the drivers of forest community structure and the evolutionary mechanisms that trees can implement to counter the effects of a rapidly changing environment are imperative to help predict species responses to future climatic and environmental change.
Book Synopsis Canadian Journal of Forest Research by :
Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 1992 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluating the Potential of Red Spruce (Picea Rubens) to Persist Under Climate Change Using Historic Provenance Trials by : Wushuang Li
Download or read book Evaluating the Potential of Red Spruce (Picea Rubens) to Persist Under Climate Change Using Historic Provenance Trials written by Wushuang Li and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Red spruce (Picea rubens) is an important species in northeastern North America. Climate change impacts on this species are expected to vary regionally. We use two historic provenance trials to evaluate red spruce's capacity to persist under climate change by analyzing measurements of tree height and diameter in relation to differences between provenance origin climate and test site climate. Within the range of climate differentials, warming did not appear to negatively impact red spruce performance, but cooling did affect performance by reducing height and diameter. Warmer temperatures increased tree size, especially for northern provenances, suggesting red spruce at the northern extent of its range is cold suppressed. Furthermore, changes in frost free period and mean annual temperature significantly impacted tree size. Temperature-related climatic factors had stronger effects than moisture-related factors. Our tests of climatic effects on more southerly provenances were limited by lack of sites south of red spruce's range
Book Synopsis Ecophysiology of Coniferous Forests by : William K. Smith
Download or read book Ecophysiology of Coniferous Forests written by William K. Smith and published by Academic Press. This book was released on 2013-10-22 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conifers--pine, fir, and spruce trees--are dominant species in forests around the world. This book focuses on the physiology of conifers and how these physiological systems operate. Special consideration is devoted to the means by which ecophysiological processes influence organismal function and distribution. Chapters focus on the genetics of conifers, their geographic distribution and the factors that influence this distribution, the impact of insect herbivory on ecophysiological parameters, the effects of air pollution, and the potential impact that global climatic changes will have upon conifers. Because of the growing realization that forests have a crucial role to play in global environmental health, this book will appeal to a developing union of ecologists, physiologists and more theoretically minded foresters.
Book Synopsis Boyce Thompson Institute Collected Research Papers by :
Download or read book Boyce Thompson Institute Collected Research Papers written by and published by . This book was released on 1923 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Ecological Society of America by : Ecological Society of America
Download or read book Bulletin of the Ecological Society of America written by Ecological Society of America and published by . This book was released on 1993 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological Responses of Red Spruce Saplings (Picea Rubens Sarg.) to Acid Fog by : Mei Jiang
Download or read book Physiological Responses of Red Spruce Saplings (Picea Rubens Sarg.) to Acid Fog written by Mei Jiang and published by . This book was released on 1999 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
