Download or read book Structure and Dynamics of Boreal Forest Stands in the Duck Mountains Manitoba SFM Network Project Forest Succession and Post logging Regeneration Dynamics in the Duck Mountain Ecoregion West central Manitoba written by Norman Charles Kenkel and published by . This book was released on 2000 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Dynamics of Boreal Forest Stands in the Duck Mountains Manitoba Forest Succession and Post logging Regeneration Dynamics in the Duck Mountain Ecoregion West central Manitoba written by Norman Charles Kenkel and published by . This book was released on 2001 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Dynamics of Boreal Forest Stands in the Duck Mountains Manitoba written by Cary Hamel and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: No single process seems to characterize succession in the boreal forest; accumulating evidence suggests that it is subject to considerable variation resulting in multiple successional pathways. This study was undertaken to elucidate the structure and dynamics of major boreal forest stands in the Duck Mountain Provincial Park and Forest. Detailed tree size and age data were obtained from each of 70 sampled stands located throughout the study area. Our approach involved reconstructing the initial post-fire composition of these stands, and classifying them into five stand types (Trembling Aspen, Balsam Poplar, White Spruce, Jack Pine, and Black Spruce). Successional pathways within these stand types were inferred through the careful examination of major stand dynamic features in 80-130 year old stands. A novel multivariate approach was used to examine the relationship between the initial cohort and the composition of the subsequent advance regeneration cohort. Variation in patterns of regeneration were examined universally and within each stand type. Timing of recruitment and major factors affecting secondary recruitment were also examined. Our results reveal that landscape-scale succession in Duck Mountain does not result in convergence to a single self-perpetuating 'climax' forest community. Historically, many stands burned with sufficient frequency that canopy succession did not occur, resulting in long-term reestablishment of pre-fire canopy composition. In the absence of disturbance, the initial post-fire cohort composition may be maintained by gap dynamic processes. More often, however, recruitment of other species along with regeneration of the initial cohort species results in increased canopy diversity and complexity over time.
Download or read book Structure and Dynamics of Boreal Forest Stands in the Duck Mountains Manitoba written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: No single process seems to characterize succession in the boreal forest; accumulating evidence suggests that it is subject to considerable variation resulting in multiple successional pathways. This study was undertaken to elucidate the structure and dynamics of major boreal forest stands in the Duck Mountain Provincial Park and Forest. Detailed tree size and age data were obtained from each of 70 sampled stands located throughout the study area. Our approach involved reconstructing the initial post-fire composition of these stands, and classifying them into five stand types (Trembling Aspen, Balsam Poplar, White Spruce, Jack Pine, and Black Spruce). Successional pathways within these stand types were inferred through the careful examination of major stand dynamic features in 80-130 year old stands. A novel multivariate approach was used to examine the relationship between the initial cohort and the composition of the subsequent advance regeneration cohort. Variation in patterns of regeneration were examined universally and within each stand type. Timing of recruitment and major factors affecting secondary recruitment were also examined. Our results reveal that landscape-scale succession in Duck Mountain does not result in convergence to a single self-perpetuating 'climax' forest community. Historically, many stands burned with sufficient frequency that canopy succession did not occur, resulting in long-term reestablishment of pre-fire canopy composition. In the absence of disturbance, the initial post-fire cohort composition may be maintained by gap dynamic processes. More often, however, recruitment of other species along with regeneration of the initial cohort species results in increased canopy diversity and complexity over time.
Download or read book Structure and Dynamics of Boreal Forest Stands in the Duck Mountains Manitoba microform written by Hamel, Cary and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2001 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: No single process seems to characterize succession in the boreal forest; accumulating evidence suggests that it is subject to considerable variation resulting in multiple successional pathways. This study was undertaken to elucidate the structure and dynamics of major boreal forest stands in the Duck Mountain Provincial Park and Forest. Detailed tree size and age data were obtained from each of 70 sampled stands located throughout the study area. Our approach involved reconstructing the initial post-fire composition of these stands, and classifying them into five stand types (Trembling Aspen, Balsam Poplar, White Spruce, Jack Pine, and Black Spruce). Successional pathways within these stand types were inferred through the careful examination of major stand dynamic features in 80-130 year old stands. A novel multivariate approach was used to examine the relationship between the initial cohort and the composition of the subsequent advance regeneration cohort. Variation in patterns of regeneration were examined universally and within each stand type. Timing of recruitment and major factors affecting secondary recruitment were also examined. Our results reveal that landscape-scale succession in Duck Mountain does not result in convergence to a single self-perpetuating 'climax' forest community. Historically, many stands burned with sufficient frequency that canopy succession did not occur, resulting in long-term reestablishment of pre-fire canopy composition. In the absence of disturbance, the initial post-fire cohort composition may be maintained by gap dynamic processes. More often, however, recruitment of other species along with regeneration of the initial cohort species results in increased canopy diversity and complexity over time.
Download or read book Long term Stand Dynamics of the Boreal Mixed wood Forests of West central Manitoba written by Joshua Levac and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Landscape level Vegetation Dynamics in Riding Mountain National Park Manitoba Canada written by Richard Caners and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cornplex physiography and disturbance history of Riding Mountain National Park have resulted in a complex assemblage of aspen parkland, eastern deciduous and boreal forest communities on the landscape. Few studies have examined forest composition, structure and dynamics in the eastern extension of the mixedwood forest region. This study uses detailed vegetation, edaphic and environmental data collected from 202-100 m2 forest plots distributed throughout the Park to elucidate landscape-level trends in forest structure and dynamics. Stands were first classified into 8 dominant stand types, and described in terms of their biotic and abiotic characteristics. Factors affecting patterns of understory tree regeneration and the timing of their recruitment were examined on the landscape, and growth of understory green ash (Fraxinus pennsylvanica Marsh.) and white spruce (Picea glauca (Moench) Voss) were analyzed in different habitats to infer future changes in stand composition. Successional trajectories were created for each of the 8 stand types using a static size-class analysis of tree species, and a comprehensive conceptual model of stand dynamics was created. Sections of this thesis have previously been published in Caners and Kenkel (1998). Results indicate that successional trajectories for stand types in the Park do not converge towards a single self-perpetuating 'climax' community. Instead, vectors diverge, converge and remain cyclical, with multiple potential pathways recognized for each stand type. This study demonstrates that species assemblages, and the propensity for change, are governed by the cumulative and synergistic effects of climate, topography, disturbance frequency, size and intensity, edaphic conditions and the proximity of parental seed sources. These factors have resulted in a patchwork mosaic of forest stands on the landscape of varying structure, composition and seral stage. Overall, results are in general agreement with studies from central and eastern regions of the boreal forest. Post-fire stands are dominated by pioneering hardwoods such as aspen, balsam poplar and paper birch. Mid-succession stands show an increasingly greater proportion of white spruce in the canopy, whereas late-succession stands are dominated by white spruce and balsam fir and are driven by gap dynamic processes. The oldest stands are commonly open and shrub-dominated, especially by beaked hazelnut and mountain maple. In areas of dense shrub cover and/or areas without a proximate seed source, regeneration of tree species is dramatically reduced. Ungulate herbivores selectively browse trees and shrubs, impacting the long-terms dynamics of forest systems.
Download or read book Wildland Fire in Ecosystems written by and published by . This book was released on 2000 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecosite Mapping and Dendroclimatology Duck Mountains West Central Manitoba SFM Network Project Historical Disturbance Regime FML 3 West Central Manitoba written by David J. Sauchyn and published by . This book was released on 2000 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Our Landscape Heritage written by Vincent Frank Zelazny and published by . This book was released on 2007 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our Landscape Heritage provides an overview of the history and ecological makeup of the landscapes of New Brunswick to help ecological seekers starting out with basic knowledge about geology, soils, climate, and vegetation, to better understand why plants and animals are today distributed as they are. Part I outlines the rationale and history of ecological land classification (ELC) in New Brunswick, and presents basic scientific concepts and facts that help the reader to interpret the information that follows. Part II, Portrait of New Brunswick Ecoregions and Ecodistricts presents a detailed look at the variety and distribution of ecosystems across the geographic expanse of New Brunswick. Each of the seven chapters of Part II provides a high level description of the ecoregion, followed by detailed descriptions of each ecodistrict within the ecoregion.--Includes text from document.
Download or read book Birds in Boreal Canada written by Anthony J. Erskine and published by Ottawa: Fisheries and Environment Canada. This book was released on 1977 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: An 8 year study to assemble baseline data on the compostion and density of the bird communities.
Download or read book Forest Hydrology written by Devendra Amatya and published by CABI. This book was released on 2016-09-14 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forests cover approximately 26% of the world's land surface area and represent a distinct biotic community. They interact with water and soil in a variety of ways, providing canopy surfaces which trap precipitation and allow evaporation back into the atmosphere, thus regulating how much water reaches the forest floor as through fall, as well as pull water from the soil for transpiration. The discipline "forest hydrology" has been developed throughout the 20th century. During that time human intervention in natural landscapes has increased, and land use and management practices have intensified. The book will be useful for graduate students, professionals, land managers, practitioners, and researchers with a good understanding of the basic principles of hydrology and hydrologic processes.
Download or read book Ecology written by Charles J. Krebs and published by Benjamin-Cummings Publishing Company. This book was released on 2001 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This best-selling majors ecology book continues to present ecology as a series of problems for readers to critically analyze. No other text presents analytical, quantitative, and statistical ecological information in an equally accessible style. Reflecting the way ecologists actually practice, the book emphasizes the role of experiments in testing ecological ideas and discusses many contemporary and controversial problems related to distribution and abundance. Throughout the book, Krebs thoroughly explains the application of mathematical concepts in ecology while reinforcing these concepts with research references, examples, and interesting end-of-chapter review questions. Thoroughly updated with new examples and references, the book now features a new full-color design and is accompanied by an art CD-ROM for instructors. The field package also includes The Ecology Action Guide, a guide that encourages readers to be environmentally responsible citizens, and a subscription to The Ecology Place (www.ecologyplace.com), a web site and CD-ROM that enables users to become virtual field ecologists by performing experiments such as estimating the number of mice on an imaginary island or restoring prairie land in Iowa. For college instructors and students.
Download or read book Conservation Biology for All written by Navjot S. Sodhi and published by OUP Oxford. This book was released on 2010-01-08 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation Biology for All provides cutting-edge but basic conservation science to a global readership. A series of authoritative chapters have been written by the top names in conservation biology with the principal aim of disseminating cutting-edge conservation knowledge as widely as possible. Important topics such as balancing conversion and human needs, climate change, conservation planning, designing and analyzing conservation research, ecosystem services, endangered species management, extinctions, fire, habitat loss, and invasive species are covered. Numerous textboxes describing additional relevant material or case studies are also included. The global biodiversity crisis is now unstoppable; what can be saved in the developing world will require an educated constituency in both the developing and developed world. Habitat loss is particularly acute in developing countries, which is of special concern because it tends to be these locations where the greatest species diversity and richest centres of endemism are to be found. Sadly, developing world conservation scientists have found it difficult to access an authoritative textbook, which is particularly ironic since it is these countries where the potential benefits of knowledge application are greatest. There is now an urgent need to educate the next generation of scientists in developing countries, so that they are in a better position to protect their natural resources.
Download or read book Invasive Species in Forests and Rangelands of the United States written by Therese M. Poland and published by Springer Nature. This book was released on 2021-02-01 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.
Download or read book Fire and Climatic Change in Temperate Ecosystems of the Western Americas written by Thomas T. Veblen and published by Springer Science & Business Media. This book was released on 2006-05-10 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both fire and climatic variability have monumental impacts on the dynamics of temperate ecosystems. These impacts can sometimes be extreme or devastating as seen in recent El Nino/La Nina cycles and in uncontrolled fire occurrences. This volume brings together research conducted in western North and South America, areas of a great deal of collaborative work on the influence of people and climate change on fire regimes. In order to give perspective to patterns of change over time, it emphasizes the integration of paleoecological studies with studies of modern ecosystems. Data from a range of spatial scales, from individual plants to communities and ecosystems to landscape and regional levels, are included. Contributions come from fire ecology, paleoecology, biogeography, paleoclimatology, landscape and ecosystem ecology, ecological modeling, forest management, plant community ecology and plant morphology. The book gives a synthetic overview of methods, data and simulation models for evaluating fire regime processes in forests, shrublands and woodlands and assembles case studies of fire, climate and land use histories. The unique approach of this book gives researchers the benefits of a north-south comparison as well as the integration of paleoecological histories, current ecosystem dynamics and modeling of future changes.
Download or read book An Ecological Characterization of Rocky Mountain Montane and Subalpine Wetlands written by and published by . This book was released on 1986 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
