Suchergebnisse

The Dynamic Ecological-Land Tenure Analysis (DELTA) simulation model (Southworth, F., et al, "A Dynamic Land Tenure Analysis Model Emphasizing the Ecological Impacts of Deforestation," Oak Ridge National Laboratory, Tenn, 1991) is used to examine socioeconomic & ecological features of two types of land-use change in Rondonia, Brazil: (1) a colonist scenario with rapid land clearing & shifting tenants; & (2) a sustainable agriculture scenario with intercropping & fallow land techniques. Carbon loss & recovery over various time periods & number of families is estimated by applying the model to a set of 294 plots in the Rondonia area. The usefulness of DELTA in studying land carrying capacity & other socioeconomic characteristics is discussed. 9 Figures, 2 Photographs, 39 References. M. Malas

to Landscape Ecology -- The Critical Concept of Scale -- to Models -- Causes of Landscape Pattern -- Quantifying Landscape Pattern -- Neutral Landscape Models -- Landscape Disturbance Dynamics -- Organisms and Landscape Pattern -- Ecosystem Processes in the Landscape -- Applied Landscape Ecology -- Conclusions and Future Directions.

The classic papers that laid the foundations of modern ecology alongside commentaries by noted ecologists. The period of 1970 to 1995 was a time of tremendous change in all areas of ecology—from an increased rigor for experimental design and analysis to the reevaluation of paradigms, new models for understanding, and theoretical advances. Edited by ecologists Thomas E. Miller and Joseph Travis, Foundations of Ecology II includes facsimiles of forty-six papers from this period alongside expert commentaries that discuss a total of fifty-three key studies, addressing topics of diversity, predation, complexity, competition, coexistence, extinction, productivity, resources, distribution, abundance, and conservation. The result is more than a catalog of historic firsts; this book offers diverse perspectives on the foundational papers that led to today's ecological work. Like this book's 1991 predecessor, Foundations of Ecology edited by Leslie A. Real and James H. Brown, Foundations of Ecology II promises to be the essential primer for graduate students and practicing ecologists for decades to come