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Author: Sam Cushman
Publisher:
ISBN:
Category : Climatic changes
Languages : en
Pages : 56
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Book Description
Reliable predictions of how changing climate and disturbance regimes will affect forest ecosystems are crucial for effective forest management. Current fire and climate research in forest ecosystem and community ecology offers data and methods that can inform such predictions. However, research in these fields occurs at different scales, with disparate goals, methods, and context. Often results are not readily comparable among studies and defy integration. We discuss the strengths and weaknesses of three modeling paradigms: empirical gradient models, mechanistic ecosystem models, and stochastic landscape disturbance models. We then propose a synthetic approach to multi-scale analysis of the effects of climatic change and disturbance on forest ecosystems. Empirical gradient models provide an anchor and spatial template for stand-level forest ecosystem models by quantifying key parameters for individual species and accounting for broad-scale geographic variation among them. Gradient imputation transfers predictions of fine-scale forest composition and structure across geographic space. Mechanistic ecosystem dynamic models predict the responses of biological variables to specific environmental drivers and facilitate understanding of temporal dynamics and disequilibrium. Stochastic landscape dynamics models predict frequency, extent, and severity of broad-scale disturbance. A robust linkage of these three modeling paradigms will facilitate prediction of the effects of altered fire and other disturbance regimes on forest ecosystems at multiple scales and in the context of climatic variability and change.
Author: Sam Cushman
Publisher:
ISBN:
Category : Climatic changes
Languages : en
Pages : 56
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Book Description
Reliable predictions of how changing climate and disturbance regimes will affect forest ecosystems are crucial for effective forest management. Current fire and climate research in forest ecosystem and community ecology offers data and methods that can inform such predictions. However, research in these fields occurs at different scales, with disparate goals, methods, and context. Often results are not readily comparable among studies and defy integration. We discuss the strengths and weaknesses of three modeling paradigms: empirical gradient models, mechanistic ecosystem models, and stochastic landscape disturbance models. We then propose a synthetic approach to multi-scale analysis of the effects of climatic change and disturbance on forest ecosystems. Empirical gradient models provide an anchor and spatial template for stand-level forest ecosystem models by quantifying key parameters for individual species and accounting for broad-scale geographic variation among them. Gradient imputation transfers predictions of fine-scale forest composition and structure across geographic space. Mechanistic ecosystem dynamic models predict the responses of biological variables to specific environmental drivers and facilitate understanding of temporal dynamics and disequilibrium. Stochastic landscape dynamics models predict frequency, extent, and severity of broad-scale disturbance. A robust linkage of these three modeling paradigms will facilitate prediction of the effects of altered fire and other disturbance regimes on forest ecosystems at multiple scales and in the context of climatic variability and change.
Author: United States Department of Agriculture
Publisher: CreateSpace
ISBN: 9781511614191
Category :
Languages : en
Pages : 56
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Book Description
Reliable predictions of how changing climate and disturbance regimes will affect forest ecosystems are crucial for effective forest management. Current fire and climate research in forest ecosystem and community ecology offers data and methods that can inform such predictions. However, research in these fields occurs at different scales, with disparate goals, methods, and context. Often results are not readily comparable among studies and defy integration. We discuss the strengths and weaknesses of three modeling paradigms: empirical gradient models, mechanistic ecosystem models, and stochastic landscape disturbance models. We then propose a synthetic approach to multi-scale analysis of the effects of climatic change and disturbance on forest ecosystems. Empirical gradient models provide an anchor and spatial template for stand-level forest ecosystem models by quantifying key parameters for individual species and accounting for broad-scale geographic variation among them. Gradient imputation transfers predictions of fine-scale forest composition and structure across geographic space. Mechanistic ecosystem dynamic models predict the responses of biological variables to specific environmental drivers and facilitate understanding of temporal dynamics and disequilibrium. Stochastic landscape dynamics models predict frequency, extent, and severity of broad-scale disturbance. A robust linkage of these three modeling paradigms will facilitate prediction of the effects of altered fire and other disturbance regimes on forest ecosystems at multiple scales and in the context of climatic variability and change.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 56
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Book Description
Author: Federal Coordinating Council for Science, Engineering, and Technology. Committee on Earth Sciences
Publisher:
ISBN:
Category : Climatic changes
Languages : en
Pages : 204
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Book Description
Author:
Publisher: Int. Rice Res. Inst.
ISBN: 971220166X
Category :
Languages : en
Pages : 20
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 20
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Book Description
The fusion of individualistic community ecology with the Hutchinsonian niche concept enabled a broad integration of ecological theory, spanning all the way from the niche characteristics of individual species, to the composition, structure, and dynamics of ecological communities. Landscape ecology has been variously described as the study of the structure, function, and management of large heterogeneous land areas. Any reading of the published landscape ecology literature shows near uniformity in the adoption of a categorical patch-mosaic paradigm. However, if biological communities are multivariate gradients of species composition, with each species responding individualistically to particular combinations of limiting factors, is a categorical patch-based representation appropriate? We evaluate the sufficiency of several patch-based representations of vegetation at the landscape level to explain the composition of the plant community. Classified vegetation maps all performed poorly in explaining the composition and structure of forest trees among plots. Different categorical vegetation maps provided largely independent explanations of species variability. Individual species models based on spectral, topographic, and climatic variables vastly out-performed those produced using the classified maps. By moving from a landscape ecological paradigm based on categorical patches to one based on quantitative species and environmental responses across continuous space, it will be possible to both produce much more effective predictions of species distributions and ecological processes and remove much of the disjunction between landscape ecology and mainstream community ecology theory.
Author: Samuel A. Cushman
Publisher: Springer Science & Business Media
ISBN: 4431877711
Category : Science
Languages : en
Pages : 449
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Book Description
As Earth faces the greatest mass extinction in 65 million years, the present is a moment of tremendous foment and emergence in ecological science. With leaps in advances in ecological research and the technical tools available, scientists face the critical task of challenging policymakers and the public to recognize the urgency of our global crisis. This book focuses directly on the interplay between theory, data, and analytical methodology in the rapidly evolving fields of animal ecology, conservation, and management. The mixture of topics of particular current relevance includes landscape ecology, remote sensing, spatial modeling, geostatistics, genomics, and ecological informatics. The greatest interest to the practicing scientist and graduate student will be the synthesis and integration of these topics to provide a composite view of the emerging field of spatial ecological informatics and its applications in research and management.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 172
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Book Description
Author: John Stanturf
Publisher: Springer Science & Business Media
ISBN: 9400753268
Category : Science
Languages : en
Pages : 322
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Book Description
Restoration ecology, as a scientific discipline, developed from practitioners’ efforts to restore degraded land, with interest also coming from applied ecologists attracted by the potential for restoration projects to apply and/or test developing theories on ecosystem development. Since then, forest landscape restoration (FLR) has emerged as a practical approach to forest restoration particularly in developing countries, where an approach which is both large-scale and focuses on meeting human needs is required. Yet despite increased investigation into both the biological and social aspects of FLR, there has so far been little success in systematically integrating these two complementary strands. Bringing experts in landscape studies, natural resource management and forest restoration, together with those experienced in conflict management, environmental economics and urban studies, this book bridges that gap to define the nature and potential of FLR as a truly multidisciplinary approach to a global environmental problem. The book will provide a valuable reference to graduate students and researchers interested in ecological restoration, forest ecology and management, as well as to professionals in environmental restoration, natural resource management, conservation, and environmental policy.
Author: Reed, J.
Publisher: CIFOR
ISBN: 6023871380
Category : Land use
Languages : en
Pages : 233
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Book Description
Poverty, food insecurity, biodiversity and habitat loss are persistent global challenges that are further exacerbated by the impacts of climate change. These challenges are particularly hard felt in the tropical landscapes of the global South where tensions between local socio-economic and international environmental commitments are pervasive. Due to the apparent failure of sectorial approaches to address such challenges, more holistic strategies are being increasingly promoted. Integrated landscape approaches are one such example; essentially a governance strategy that engages multiple stakeholders to reconcile societal and environmental objectives at the landscape scale to identify trade-offs and potential synergies for more sustainable and equitable land management. Integrated landscape approaches have been widely endorsed in the international and national policy arena, within academia, and in the discourse surrounding conservation and development funding. However, despite strong scientific theories and concepts, the implementation, and particularly evaluation and reporting, of integrated landscape approaches in the tropics remains poorly developed. The COLANDS initiative represents an explicit attempt to contribute towards the evidence base by operationalizing integrated landscape approaches in Ghana, Zambia and Indonesia. In this regard we aim to provide regular, honest reporting of progress. This book details the experiences of researchers engaged in these landscape-scale initiatives across the first two years of implementation. With dedicated chapters on current progress, biodiversity, methods and evaluation the book provides useful tools and resources for research and implementation. Furthermore, we consider the complex socio-political challenges associated with landscape approaches with chapters focussed on how to effectively engaging stakeholders and understanding the national policy environment. We then provide profiles of the sites in each of the three countries and describe the historical context, current status and potential for more integrated landscape governance. This book explores the techniques and strategies that can be deployed to improve the governance and management of land and natural resources and better reconcile conservation and development objectives in tropical landscapes undergoing rapid change. Contents Foreword Acknowledgments Author bios Executive Summary Introduction and backgroundJames Reed, Mirjam Ros-Tonen and Terry Sunderland Integrated landscape approaches in the tropicsJames Reed, Amy Ickowitz, Colas Chervier, Houria Djoudi, Kaala B Moombe, Mirjam Ros-Tonen, Malaika Yanou, Elizabeth L Yuliani and Terry Sunderland The role of biodiversity in integrated landscape approachesJoli R Borah, Yves Laumonier, Eric RC Bayala, Houria Djoudi, Davison Gumbo, Kaala B Moombe, Elizabeth L Yuliani and Mathurin Zida Engaging multiple stakeholders to reconcile climate, conservation and development objectives in tropical landscapesJames Reed, Jos Barlow, Rachel Carmenta, Josh van Vianen and Terry Sunderland Theories of change and monitoring and evaluation types for landscape approachesColas Chervier, Marie-Gabrielle Piketty and James Reed A methods toolbox for integrated landscape approachesJames Reed, Joli R Borah, Colas Chervier, James Langston, Moira Moeliono, Alida O’Connor, Elizabeth L Yuliani and Terry Sunderland Potential for integration? An assessment of national environment and development policiesAlida O’Connor, Houria Djoudi, Moira Moeliono, Kaala B Moombe and Freddie S Siangulube Context for landscape approach implementation in the Western Wildlife Corridor Landscape (Northern Ghana)Eric RC Bayala, Houria Djoudi, Mirjam Ros-Tonen and Mathurin Zida Understanding landscape dynamics: A case study from Kalomo DistrictKaala B Moombe, Freddie S Siangulube, Bravedo M Mwaanga, Tiza I Mfuni, Malaika P Yanou, Davison J Gumbo, Rays C Mwansa and Gilbert Juunza Kapuas Hulu: A background analysis to implementing an integrated landscape approachAugusta M Anandi, Elizabeth L Yuliani, Moira Moeliono, Yves Laumonier and Sari Narulita Conclusion and the way forwardTerry Sunderland, James Reed and Mirjam Ros-Tonen
