This book outlines a system that subdivides the Earth into a hierarchy of increasingly finer-scale ecosystems that can sever as a consistent framework for ecological analysis and management. The system consists of a three-part, nested hierarchy of ecosystem units and associated mapping criteria. Delineating units involves identifying the environmental factors controlling the spatial geography of ecosystems at various levels and drawing boundaries where they change significantly. Macroscale units (ecoregions) are climatically controlled and delineated as K�ppen-Trewartha climate zones. Nested within these are landscape mosaics, the mesoscale units, controlled by landform and delineated by Hammond’s landform regions. At the microscale are individual sites controlled by topographically determined topoclimate and soil moisture regimes.

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The analysis and management of ecosystems rely increasingly on sound geographical knowledge. Ecosystem Geography is a landmark contribution which brings the geographer's tools - maps, scales, boundaries, and units - to the study of ecosystems. The author, a senior geographer and program manager with the U.S. Forest Service, has distilled more than two decades of research on ecosystem mapping and classification. His work has had a growing influence on how government and academic scientists are using ecological data to monitor biodiversity, manage land holdings and interpret the results of climatic change. Ecosystem Geography features spectacular graphics, including diagrams, photographs, and abundant maps. It will be welcomed by ecologists, geographers, land and resource specialists, and anyone involved in the study or management of landscapes and ecosystems.

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