Key Topics in Landscape Ecology

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Landscape ecology is a relatively new area of study, which aims to understand the pattern of interaction of biological and cultural communities within a landscape. This book brings together leading figures from the field to provide an up-to-date survey of recent advances, identify key research problems and suggest a future direction for development and expansion of knowledge. Providing in-depth reviews of the principles and methods for understanding landscape patterns and changes, the book illustrates concepts ...

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Overview

Landscape ecology is a relatively new area of study, which aims to understand the pattern of interaction of biological and cultural communities within a landscape. This book brings together leading figures from the field to provide an up-to-date survey of recent advances, identify key research problems and suggest a future direction for development and expansion of knowledge. Providing in-depth reviews of the principles and methods for understanding landscape patterns and changes, the book illustrates concepts with examples of innovative applications from different parts of the world. Forming a current 'state-of-the-science' for the science of landscape ecology, this book forms an essential reference for graduate students, academics, professionals and practitioners in ecology, environmental science, natural resource management, and landscape planning and design.

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Product Details

  • ISBN-13: 9780521850940
  • Publisher: Cambridge University Press
  • Publication date: 10/28/2006
  • Series: Cambridge Studies in Landscape Ecology Series
  • Edition description: 1ST
  • Pages: 314
  • Product dimensions: 6.85 (w) x 9.72 (h) x 0.98 (d)

Meet the Author

Jianguo (Jingle) Wu is Professor of Ecology, Evolution, and Environmental Science at Arizona State University. His research interests include landscape ecology, urban ecology, and sustainability science, focusing on hierarchical patch dynamics, pattern-process-scale relationships, spatial scaling, land use change and its effects on ecosystem processes, and biodiversity and ecosystem functioning. He has published more than 120 scientific papers which involved mostly dryland ecosystems in North America and China. His professional service includes Program Chair of the 2001 Annual Symposium of the US Association for Landscape Ecology (US-IALE), Councillor-at-Large of US-IALE (2001–2003), Chair of Asian Ecology Section of Ecological Society of America (1999–2000), and Task Leader of GCTE of International Geosphere-Biosphere Programme (1997–2002). He is currently the Editor-in-Chief of the international journal Landscape Ecology.

Richard J. Hobbs is Professor of Environmental Science at Murdoch University, Western Australia, and has research interests in restoration ecology and landscape ecology, focusing on the conservation and management of altered landscapes, particularly the agricultural area of southwestern Australia. He is a Fellow of the Australian Academy of Science and has been listed by ISI as one of the most highly cited researchers in Ecology and Environmental Science. His professional services include President of the International Association for Landscape Ecology 1999–2003 and President of the Ecological Society of Australia 1998–1999. He is currently the Editor-in-Chief of the journal Restoration Ecology.

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Read an Excerpt


Cambridge University Press
978-0-521-85094-0 - Key Topics in Landscape Ecology Edited - by Jianguo Wu and Richard j. Hobbs
Excerpt



Part I
Introduction




I

Perspectives and prospects of
landscape ecology




1.1  Introduction

Landscape ecology has rapidly established itself as an interdisciplinary research field worldwide in the past few decades. However, diversification in perspectives and approaches has apparently caused some concerns with the “identity” of the field in recent years. For example, Wiens (1999) stated that “landscape ecology continues to suffer from something of an identity crisis,” while Moss (1999) warned that landscape ecology’s “healthy, youthful development will be cut off before it matures if it does not recognize and develop its own distinctive core and focus.” As landscape ecologists, we feel that we should not be particularly worried about the identity or the fate of the field. Its identity is to some extent self-defining through the activities that people calling themselves landscape ecologists undertake, and its fate will be determined by its utility and its ability to provide techniques, approaches, and applications which help tackle the complex environmental management challenges facing humanity. However, we do think that, after two decades of rapid developments in both theory and practice, landscape ecology can benefit from aforward-looking introspection.

   For example, several questions may be asked to address some of the concerns and challenges this field now faces. What is the identity of landscape ecology that it is losing or that has never been established? Given the multidisciplinary origins and goals of the field, is it possible for landscape ecology to have “its own distinctive core and focus?” If so, what would it be? How should we solidify the interdisciplinarity or transdisciplinarity of landscape ecology? These are grand questions whose answers may be still quite elusive. Thus, this book is not intended to provide all the answers. Rather, it addresses a series of key issues and perspectives in contemporary landscape ecology identified by a group of leading scientists around the world. By closely examining these key topics, we hope that this book will contribute to the development of landscape ecology, and help resolve the grand questions posed above.

1.2  Key issues and research topics in landscape ecology

The chapters in this book were collected together to explore a set of key issues synthesized by Wu and Hobbs (2002) from a symposium which sought to draw out from leading landscape ecologists what these issues were. Many ideas from the group of 17 people was condensed to a long list of items (Table. 1), from which Wu and Hobbs (2002) further identified six key issues to be considered: (1) interdisciplinarity or transdisciplinarity, (2) integration between basic research and applications, (3) conceptual and theoretical development, (4) education and training, (5) international scholarly communication and collaborations, and (6) outreach and communication with the public and decision-makers.

   Wu and Hobbs (2002) also identified ten key research areas dealing with these issues: (1) ecological flows in landscape mosaics, (2) causes, processes, and consequences of land use and land cover change, (3) nonlinear dynamics and landscape complexity, (4) scaling, (5) methodological development, (6) relating landscape metrics to ecological processes, (7) integrating humans and their activities into landscape ecology, (8) optimization of landscape pattern, (9) landscape conservation and sustainability, and (10) data acquisition and accuracy assessment.

   The chapters in this book collectively cover most of these issues and research areas. The subject matter varies from questions regarding the collection and analysis of data for use in landscape ecological studies, through the intersection between landscape ecology, ecosystem ecology and conservation biology, to the broader application of landscape ecology in complex social–ecological systems in inter- and transdisciplinary settings. Hence this book provides a microcosm of the current state of play in landscape ecology: a lot of activity in the area of acquiring and interpreting spatial ecological data and an equivalent amount of effort in the broader aspects which interface ecology with management and planning.

   There has been a lot of introspection in landscape ecology about what the subject is all about. It is apparent from the chapters in this book that this is still evident. In the subject as a whole, there seems to be something of a schism between the more biophysically oriented school and the arm that deals with the interface between science, planning and management. The first sees landscape ecology primarily as a means of dealing with spatial patterning and


A list of major research topics in landscape ecology based on suggestions by a group of leading landscape ecologists from around the world at the 16th Annual Symposium of the US Regional Association of the International Association for Landscape Ecology, held at Arizona State University, Tempe in April 2001a


Development of theory and principles

•   Landscape mosaics and ecological flows

•   Land transformations

•   Landscape sustainability

•   Landscape complexity

Landscape metrics

•   Norms or standards for metric selection, change detection, etc.

•   Integration of metrics with holistic landscape properties

   Relating metrics to ecological processes

•   Sensitivity to scale change

Ecological flows in landscape mosaics

•   Flows of organisms, material, energy, and information

•   Effects of connectivity, edges, and boundaries

•   Spread of invading species

•   Spatial heterogeneity and ecosystem processes

•   Disturbances and patch dynamics

Optimization of landscape pattern

•   Optimization of land-use pattern

•   Optimal management

•   Optimal design and planning

•   New methods for spatial optimization

Metapopulation theory

•   Integration of the view of landscape mosaics

•   Integration of economic theory of land-use change and cellular automata

Scaling

•   Extrapolating information across heterogeneous landscapes

•   Development of scaling theory and methods

•   Derivation of empirical scaling relations for landscape pattern and processes

Complexity and nonlinear dynamics of landscapes

•   Landscapes as spatially extended complex systems

•   Landscapes as complex adaptive systems

•   Thresholds, criticality, and phase transitions

•   Self-organization in landscape structure and dynamics

Land-use and land-cover change

•   Biophysical and socioeconomic drivers and mechanisms

•   Ecological consequences and feedbacks

•   Long-term landscape changes driven by economies and climate changes

(cont.)


Spatial heterogeneity in aquatic systems

•   The relationship between spatial pattern and ecological processes in lakes, rivers, and oceans

•   Terrestrial and aquatic comparisons

Landscape-scale experiments

•   Experimental landscape systems

•   Field manipulative studies

•   Scale effects in experimental studies

New methodological developments

•   Integration among observation, experimentation, and modeling

•   New statistical and modeling methods for spatially explicit studies

•   Interdisciplinary and transdisciplinary approaches

Data collection and accuracy assessment

•   Multiple-scale landscape data

•   More emphasis on collecting data on organisms and processes

•   Data quality control

•   Metadata and accuracy assessment

Fast changing and chaotic landscapes

•   Rapidly urbanizing landscapes

•   War zones

•   Other highly dynamic landscapes

Landscape sustainability

•   Developing operational definitions and measures that integrate ecological, social, cultural, economic, and aesthetic components

•   Practical strategies for creating and maintaining landscape sustainability

Human activities in landscapes

•   The role of humans in shaping landscape pattern and processes

•   Effects of socioeconomic and cultural processes on landscape structure and functioning

Holistic landscape ecology

•   Landscape ecology as an anticipative and prescriptive environmental science

•   Development of holistic and systems approaches

a See Wu and Hobbs 2002 for more details.



heterogeneity and building this on the foundation of ecosystem and population ecology. The second sees landscape ecology primarily as the necessary scientific underpinning for spatial planning and management of landscapes, particularly in human-dominated settings. This dichotomy could simplistically be interpreted as a North American versus European divide, but that would be too simplistic since there are many European landscape ecologists working primarily on the biophysical aspects and equivalently, many North Americans dealing with the planning and management issues. In addition, there are others, such as the Australians, who perhaps take a pragmatic middle road which combines both aspects.

   Is this dichotomy a problem? The obvious answer is that it should not be, since both approaches are necessary and can be highly complementary. It is only a problem if adherents of either approach fail to appreciate the value and context of the other. Clearly, landscape planning has to rely on the acquisition and analysis of complex spatial data. Similarly, to be useful, spatial data need to feed into the planning and management process. Landscape ecology’s key role, therefore, is to provide an umbrella for all of these endeavors so that people with different objectives and backgrounds can interact and develop approaches which are more than the sum of the parts.

   In recent years this umbrella function has succeeded in part, but has perhaps not yet achieved all it can. Landscape ecology could be accused of lacking the unifying direction of more mission-oriented sciences such as conservation biology or restoration ecology (Hobbs 1997). Landscape ecology conferences attract people who are interested in landscapes – any and all aspects of landscapes are covered, from the hard-core spatial ecology through to the more humanities-based landscape history, aesthetics, design, and so on. Often there is still a clash of cultures, with apparently little common ground between the numerical and the spiritual and aesthetic. This is perhaps inevitable, but is not necessarily a terminal problem. Its solution lies in the acceptance of the breadth of issues and approaches involved in understanding how landscapes work. It lies in greater communication among researchers and practitioners from different disciplines and backgrounds. It lies in fostering that communication through mechanisms such as workshops and meetings, joint supervision of Ph.D. students, and joint faculty appointments between ecology and landscape design departments. We have had an era of increased specialization and fragmentation of effort, which has led us to the current state of the world: the future has to be based more in integrative and transdisciplinary approaches if we wish to find effective ways of steering the world in a more sustainable direction. Landscape ecology provides much of value for those wishing to better conserve or manage the planet and its inhabitants.

1.3  Concluding remarks




Landscape ecology must, therefore, continue to develop along the lines identified in the chapters in this book. We need continued improvement in our ability to collect and interpret spatial data. We need to ensure that effective metrics are developed which aid in this interpretation. We need to develop streamlined ways of feeding complex spatial data into land-use planning and management decisions. And to do all this, we need to find ways of conducting our research in inter- and transdisciplinary settings which actually work. This set of requirements is surely enough to stimulate the field of landscape ecology to continue to develop its intellectual rigor and to mature as a science. The various chapters in this book explore the current status of endeavors in each of the areas outlined above, and we hope that they faithfully indicate the vigor and promise currently being shown within landscape ecology.





Part II
Key topics and perspectives





© Cambridge University Press
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Table of Contents

Preface; Part I. Introduction: 1. Perspectives and prospects of landscape ecology Richard Hobbs and Jianguo Wu; Part II. Key Topics and Perspectives: 2. Adequate data of known accuracy are critical to advancing the field of landscape ecology Louis R. Iverson; 3. Landscape pattern analysis: key issues and challenges Harbin Li and Jianguo Wu; 4. Spatial heterogeneity and ecosystem processes Monica G. Turner and Jeffrey A. Cardille; 5. Landscape heterogeneity and metapopulation dynamics Lenore Fahrig; 6. Determining pattern-process relationship in heterogeneous landscapes Robert H. Gardner, James D. Forester and Roy E. Plotnick; 7. Scale and scaling: a cross-disciplinary perspective Jianguo Wu; 8. Optimization of landscape pattern John Hof and Curtis Flather; 9. Advances in detecting landscape changes at multiple scales: examples from Northern Australia John A. Ludwig; 10. The preoccupation of landscape research with land use and land cover Marc Antrop; 11. Applying landscape-ecological principles to regional conservation: the wildcountry project in Australia Brendan G. Mackey, Michael E. Soulé, Henry A. Nix, Harry F. Recher, Robert G. Lesslie, Jann E. Williams, John C. Z. Woinarski, Richard J. Hobbs and Hugh P. Possingham; 12. Using landscape ecology to make sense of Australia's last frontier David Bowman; 13. Transferring ecological knowledge to landscape planning: a design method for robust corridors Claire Vos, Paul Opdam, Eveliene G. Steingröver and Rien Reijnen; 14. Integrative landscape research: facts and challenges Gary Fry, Bärbel Tress and Gunther Tress; Part III. Synthesis: 15. Landscape ecology: the state of the science Jianguo Wu and Richard J. Hobbs; Index.

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