Download or read book Ecological Implications of Changing the Composition of Boreal Mixedwood Forests written by and published by . This book was released on 2010 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Implications of Changing the Composition of Boreal Mixedwood Forests written by Ellen Macdonald and published by . This book was released on 2010 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managing Boreal Forests in the Context of Climate Change written by Seppo Kellomaki and published by CRC Press. This book was released on 2017-02-03 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: In many places in the world, forests dominate landscapes and provide various products. Future climate change could profoundly alter the productivity of forest ecosystems and species composition. Until now, climate impact research has primarily focused on the likely impacts of rise in temperature, increased atmospheric CO2 concentration, and varying precipitation on unmanaged forests. The issue that now needs to be addressed is how to sustainably manage climate change for timber production and biomass. Though climate change is a global issue, impacts on forests depend on local environmental conditions and management methods, so this book will look at the issue under varying local contexts.

Download or read book Boreal Forests in the Face of Climate Change written by Miguel Montoro Girona and published by Springer Nature. This book was released on 2023-03-01 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book explores a new conceptual framework for the sustainable management of the boreal forest in the face of climate change. The boreal forest is the second-largest terrestrial biome on Earth and covers a 14 million km2 belt, representing about 25% of the Earth’s forest area. Two-thirds of this forest biome is managed and supplies 37% of global wood production. These forests also provide a range of natural resources and ecosystem services essential to humanity. However, climate change is altering species distributions, natural disturbance regimes, and forest ecosystem structure and functioning. Although sustainable management is the main goal across the boreal biome, a novel framework is required to adapt forest strategies and practices to climate change. This collaborative effort draws upon 148 authors in summarizing the sustainable management of these forests and detailing the most recent experimental and observational results collected from across the boreal biome. It presents the state of sustainable management in boreal forests and highlights the critical importance of this biome in a context of global change because of these forests' key role in a range of natural processes, including carbon sequestration, nutrient cycling, and the maintaining of biodiversity. This book is an essential read for academics, students, and practitioners involved in boreal forest management. It outlines the challenges facing sustainable boreal forest management within the context of climate change and serves as a basis for establishing new research avenues, identifying future research trends, and developing climate-adapted forest management plans.

Download or read book Ecosystem Management in the Boreal Forest written by Sylvie Gauthier and published by PUQ. This book was released on 2009 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest Ecosystem Management. A management approach that aims to maintain healthy and resilient forest ecosystems by focusing on a reduction of differences between natural and managed landscapes to ensure long-term maintenance of ecosystem functions and thereby retain the social and economic benefits they provide to society.That is the definition of forest ecosystem management proposed in this book, which provides a summary of key ecological concepts supporting this approach. The book includes a review of major disturbance regimes that shape the natural dynamics of the boreal forest and gives examples from different Canadian boreal regions. Several projects implementing the forest ecosystem management approach are presented to illustrate the challenges created by current forestry practices and the solutions that this new approach can provide. In short, knowledge and understanding of forest dynamics can serve as a guide for forest management. Planning interventions based on natural dynamics can facilitate reconciliation between forest harvesting needs and the interests of other forest users.

Download or read book Relationships Between Stand Age Stand Structure and Biodiversity in Aspen Mixedwood Forests in Alberta written by Alberta Environmental Centre and published by . This book was released on 1995 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to concerns that intensive logging of Alberta's boreal mixedwood forests may result in a change in forest structure and biota, this report describes forest structure and composition of plant and animal communities in young, mature, and old aspen mixedwood stands of fire origin in Alberta. The information in this report serves as a reference against which structure and biota in harvested forests can be compared. The report begins with a general overview of the flora and fauna of the aspen mixedwood forest, and an examination of the rationale and possible consequences of commercial aspen forestry. Subsequent chapters explore relationships between stand age and microclimate, forest structure and floristics, down woody material, understory vegetation, nonvascular species, birds, and mammals. Chapters addressing featured species cover ungulates, bats, and the flying squirrel. The final chapters discuss relationships between the vertebrate community and forest structure, and provide recommendations for aspen mixedwood forest management in Alberta.

Download or read book Patterns and Mechanisms of Understorey Vegetation Associated with Stand Development in Boreal Forests written by Praveen Kumar and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The understorey vegetation comprises the greatest plant diversity and contributes substantially to ecosystem functioning and services in boreal forests. Although many studies have examined patterns of understorey species diversity in relation to stand development following stand replacing disturbances and overstorey characteristics, the mechanisms driving these patterns remain largely speculative. Furthermore, despite their ecological importance, the dynamics of understorey biomass, production and turnover rates following stand-replacing disturbance and overstorey succession remain poorly understood. The objective of this dissertation is to improve the understanding of patterns and mechanisms of understorey vegetation, and their ecological functions with stand development in central boreal forests of Canada. To achieve this goal, I first studied the effects of coarse woody debris (CWD) decay class and substrate species on the patterns of epixylic vegetation abundance, diversity and composition in the boreal forest. Second, I examined the mechanisms underlying patterns of understorey vegetation by linking resource availability and heterogeneity to understorey species diversity. Finally, I investigated the dynamics of understorey biomass, production and turnover rates in the central boreal forests of Canada. In chapter 2 and 3, the pattern of epixylic vegetation abundance, diversity and composition on coarse woody debris decay class and substrate species were examined in stands of varying ages and overstorey compositions types. The percent cover, species richness and evenness of epixylic vegetation differed significantly with both CWD decay class and substrate species. Multivariate analysis showed that understorey species composition differed significantly with decay classes and substrate species and their interactions. My findings suggest that conservation of epixylic diversity would require forest managers to maintain a diverse range of CWD decay classes and substrate species. Since stand development and overstorey compositions influence CWD decay classes and substrate species as well as colonization time and environmental conditions, our results further suggested that managed boreal landscapes should consist of a mosaic of different successional stages and a broad suite of overstorey types to support diverse understorey plant communities. In chapter 4, the mechanisms for understorey species diversity and cover were studied using structural equation modeling (SEM) to link time since fire (stand age), light availability and heterogeneity, substrate heterogeneity and soil nitrogen to understorey vegetation cover and species diversity in boreal mixedwood stands. The best model for total understorey cover showed a positive direct effect of stand age, and an indirect effect via mean light level and shrub cover, with a positive total effect; percent broadleaf canopy had a direct negative effect and an indirect effect via shrub cover. The model for total understorey species richness showed an indirect effect of stand age via mean light, light heterogeneity, and substrate heterogeneity, with a positive total effect; percent broadleaf canopy had an indirect effect via light heterogeneity, and substrate heterogeneity. The models for vascular plants followed similar trends to those for total understorey cover and species richness; however, there was an opposite indirect effect of light heterogeneity for both cover and species richness of non-vascular plants. The overall results highlight the importance of time since colonization, light availability and heterogeneity, substrate specialization and growth dynamics in determining successional patterns of boreal forest understorey vegetation. In chapter 5, the dynamics of understorey biomass, production and turnover rates following stand-replacing disturbance and throughout forest succession were examined. I found that herbaceous biomass and production peaked in early stages of stand development, whereas total, woody and bryophytes biomass and production peaked at intermediate stages of succession. Herbaceous and woody turnover rates were higher is early stages, and bryophytes turnover rates were higher at intermediate stages. Understorey total, woody and herbaceous biomass, production and turnover rates were higher under deciduous broadleaf overstorey, and those of bryophytes were higher under conifer stands. However, mixedwood stands favoured the growth of both woody and non-woody plants, and were intermediate between broadleaf and conifer stands in supporting understorey biomass and production. This study highlights the role of overstorey succession in long-term forest understorey biomass, production and turnover dynamics and its importance for modeling total forest ecosystem contribution to the global carbon cycle. In summary, this study demonstrated that multiple processes determine changes in understorey vegetation with stand development in boreal forests and highlight that understorey vegetation species diversity, and its biomass, production and turnover dynamics are driven by time since colonization following stand replacing fire, coupled with associated changes in resource availability and heterogeneity mediated via overstorey succession. This study highlight that the shifts in forest age structure and composition have strong impact on the dynamics of understorey vegetation and its ecological functions. Therefore management interventions should aim at maintaining diverse range of stand ages and overstorey types for conserving biodiversity and their ecological functions in the boreal forest of Canada.

Download or read book Carbon Accumulation Age height Relationships Production Efficiency and Competition in Boreal Mixedwood Forests written by Jennifer L. Martin and published by . This book was released on 2005 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Towards Sustainable Management of the Boreal Forest written by Philip Joseph Burton and published by NRC Research Press. This book was released on 2003 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting a summary of the development in boreal forest management, this book provides a progressive vision for some of the world's northern forests. It includes a selection of chapters based on the research conducted by the Sustainable Forest Management Network across Canada. It includes a number of case histories.

Download or read book Disturbance Dynamics in Boreal Forest written by Ola Engelmark and published by . This book was released on 1993 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fragmentation in the Boreal Forest and Possible Effects on Terrestrial Wildlife written by Christopher Herbert Richard Wedeles and published by . This book was released on 2008 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Disturbances and Climate Feedbacks in a Mixedwood Boreal Forest written by Md. Abdul Halim and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boreal forests play a critical role in global climate via important biophysical and biogeochemical feedbacks. Large-scale disturbances, particularly fire and harvesting, significantly affect these feedbacks by altering the surface and stand attributes, and can impact boreal forests' role in the global climate system. Surface- and stand-attribute-driven feedbacks change rapidly in early successional stages, making them challenging to model. As the frequency and intensity of disturbances in boreal forests are predicted to increase, a vast landscape with proportionally more young forests is likely to result. Understanding these feedbacks during early stand development is thus more critical than ever before. Scarcity of data on key biophysical (e.g., albedo, soil temperature) and biogeochemical (e.g., soil greenhouse gas fluxes) processes during early stand development has been noted, particularly in mixedwood boreal forests. Using a series of micrometeorological towers in fire and harvesting chronosequences of a mixedwood boreal forest of northwestern Ontario, we studied combined effects of vegetation cover and climate warming on the surface soil (~2 cm depth) temperature in post-disturbance stands, and the patterns and drivers of surface albedo and soil CO2 and CH4 fluxes during early stand development stages in post-fire and post-harvest stands. A proxy-year analysis indicated that surface soil temperature in winter and spring was lower in a warm year compared to a baseline year, and the magnitude of this difference varied with vegetation cover (Chapter 2). Albedo differences between post-fire and post-harvest stands were most pronounced during winter and spring and primarily driven by stand age and species composition (Chapter 3). We also found that CO2 effluxes were lower in post-fire stands compared to post-harvest stands; post-fire stands were never a source, but some young post-harvest stands were a net source of CH4 . The magnitude in flux difference between post-fire and post-harvest stands varied with stand age and was affected by environmental variables such as soil temperature, moisture, pH, and litter depth (Chapter 4). These findings are critical for understanding dynamics in soil temperature, albedo, and soil carbon fluxes during early successional stages and useful for climate-smart boreal forest management.

Download or read book Experimental Habitat Fragmentation and Simulation of Landscape Dynamics in the Boreal Mixedwood written by S. G. Cumming and published by . This book was released on 1995 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a study of about 74,000 square kilometres of mixedwood boreal forest in northern Alberta, with the main objective of acquiring, synthesising, and applying information on the response of the forest to broad-scale timber harvesting. Study methodology involved analysis of landscape patterns and species-specific population attributes in the area, followed by development of a model of landscape dynamics including components of vegetation zonation, successional change, and disturbance regimes (notably fire). The model includes a new, non-spatial fires history model developed from provincial fire history data. Simulation of the effects of logging in the study area was performed by TARDIS, a specially developed spatial harvest schedule simulator. A sub-project of the study involved an experimental study of how forest fragmentation induced by timber harvesting affects the community and population dynamics on non-game birds in aspen-dominated forest. In the experiment, fragments of old mixedwood forest, from one to 100 hectares in size, were isolated from adjacent forest and bird populations documented before and after isolation. A correlation matrix revealed relationships between bird species densities and habitat variables. Concludes with a systematic comparison of three spatial forest inventory data sets which revealed discrepancies in estimated forest composition.

Download or read book Alaska s Changing Boreal Forest written by F. Stuart Chapin and published by Oxford University Press. This book was released on 2006-01-12 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Boreal forest is the northern-most forest in the world, whose organisms and dynamics are shaped by low temperature and high latitude. The Alaskan Boreal forest is warming as rapidly as any place on earth, providing an opportunity to examine a biome as it adjusts to change. This book looks at this issue.

Download or read book Global Change written by A. I. Breymeyer and published by . This book was released on 1996 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume critically assesses the present state of our knowledge, reviews extant forest and grasslands models, and develops foundations for the design of diagnostic and predictive models, as well as identifying plans for future research on ecosystem response to global change. Carbon flow and storage are emphasised, although the flow and storage of key nutrients such as nitrogen, sulphur and phosphorus are also considered when deemed necessary to understand changes in the carbon budget of coniferous forests and grasslands.

Download or read book Ecology of Wildfire Residuals in Boreal Forests written by Ajith Perera and published by John Wiley & Sons. This book was released on 2014-07-21 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large and intense wildfires are integral to the globally important boreal forest biome. While much is known about boreal wildfires, the focus on forest remnants that either escape or survive these intense fires is a recent phenomenon: academics now study ecological processes of wildfire residuals, forest policymakers use their patterns to design harvest strategies, forest managers consider their economic value, and conservationists recognize their intrinsic ecological importance. Ecology of Wildfire Residuals in Boreal Forests is the first book to explore ecological patterns and processes of what does not burn within boreal wildfires. Following a brief introduction to the boreal forest biome, it discusses the processes that form wildfire residuals; how they are studied, with various approaches and methods; the types, extent, and ecological functions of wildfire residuals; and their role in forest management applications, all in the context of ecological scale. This book is a reference for researchers and graduate students studying boreal forest ecology, as well as for policymakers and forest managers. It adopts a non-reductionist perspective that will be of interest to scientists from conservation science, forest ecology, forest management, and timber production. Brings together fire behaviour, ecological scale, vegetation ecology, and conservation biology to provide a cross disciplinary, multi-scale, and an integrative discussion of forest fire residuals Captures the state of knowledge with a meta-analysis of research trends during the past few decades, with a comprehensive review of the literature, a compilation of key references, and a list of key topics relevant to the study of boreal wildfire residuals Identifies the major gaps and uncertainties in the present body of knowledge, including a critique of study techniques and reporting practices to date, and proposes a set of terms and definitions and a list of research questions and priorities Includes the authors’ observations and research experience from boreal Canada, and information extracted from interactions with North American and European ecologists, forest managers, and conservationists

Download or read book Ecological Silvicultural Systems written by Brian J. Palik and published by John Wiley & Sons. This book was released on 2023-10-03 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: ECOLOGICAL SILVICULTURAL SYSTEMS Unleash the natural power and adaptability of forests with this cutting-edge guide For generations, silvicultural systems have focused largely on models whose primary objective is the production of timber, leading to drastically simplified forests with reduced ecological richness, diversity, and complexity. Ecological silviculture, by contrast, focuses on producing and maintaining forests with “all their parts”—, that is, with the diversity and flexibility to respond and adapt to global changes. Ecological silviculture seeks to emulate natural development models and sustain healthy forests serving multiple values and goals. Ecological Silvicultural Systems provides a comprehensive introduction to these approaches and their benefits tailored to diverse types of forests, designed for forest management professionals. It provides a series of exemplary models for ecological silviculture and surveys the resulting forest ecosystems. The result is a text that meets the needs of professionals in forestry and natural resource management with an eye towards sustaining healthy forest ecosystems, adapting them to climate change, protecting them from invasive species, and responding to changing market forces. Ecological Silvicultural Systems readers will also find: Detailed treatment of forest ecosystems in North America, Europe, South America, and Australia A broad field of contributors with decades of combined expertise on multiple continents Discussion of pine woodlands; temperate hardwood forests, boreal forests, temperate rainforests, and more Ecological Silvicultural Systems is a useful reference for professional foresters, wildlife habitat managers, restoration ecologists, and undergraduate and graduate students in any of these fields.