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Registros recuperados: 2.004 | |
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Peterson, Garry; McGill University; garry.peterson@mcgill.ca; De Leo, Giulio A; Agenzia Regionale per la Protezione dell' Ambiente; deleo@dsa.unipr.it; Hellmann, Jessica J; Stanford University; jessicah@leland.stanford.edu; Janssen, Marco A; Indiana University; maajanss@indiana.edu; Kinzig, Ann; Arizona State University; Ann.Kinzig@asu.edu; Malcolm, Jay R; University of Toronto; jay.malcolm@utoronto.ca; O'Brien, Karen L; -; kobrien@online.no; Pope, Shealagh E; Environment Canada; shealagh.pope@ec.gc.ca; Rothman, Dale S; Columbia University; drothman@bio2.edu; Shevliakova, Elena; Carnegie Mellon University; lenish@cmu.edu; Tinch, Robert R.T.; York University, UK; rrtt100@york.ac.uk. |
Tipo: Peer-Reviewed Reports |
Palavras-chave: Adaptive management; Climate change; Global change; Uncertainty; Models. |
Ano: 1997 |
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Peterson, Garry; McGill University; garry.peterson@mcgill.ca; Pope, Shealagh E; Environment Canada; shealagh.pope@ec.gc.ca; De Leo, Giulio Alessandro; Agenzia Regionale per la Protezione dell' Ambiente; deleo@dsa.unipr.it; Janssen, Marco A; National Institute for Public Health and the Environment, The Netherlands; marco.janssen@rivm.nl; Malcolm, Jay R; Department of Forestry, University of Toronto, Canada; jay.malcolm@utoronto.ca; Parody, Jennifer M; Department of Biological Sciences, University of New Mexico, USA; jmparody@unm.edu; Hood, Greg; Australian National University/CSIRO, Australia; greg.hood@dwe.csiro.au; North, Malcolm; U.S. Forest Service, Pacific Southwest Research Station, USA; north_md@msn.com. |
Tipo: Peer-Reviewed Reports |
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Ano: 1997 |
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Walker, Brian; CSIRO Sustainable Ecosystems; Brian.Walker@csiro.au; Steffen, Will; ; Will.Steffen@dwe.csiro.au. |
Global change is the net effect of individual and interactive effects of changes in land use, atmospheric composition, biological diversity, and climate. A synthesis of the past six years' activities of the Global Change and Terrestrial Ecosystems project of the IGBP (International Geosphere-Biosphere Programme) deals with global change effects as ecosystem responses and living with global change. Ecosystem responses are considered in terms of changes in function and vegetation composition/structure. Field experiments of elevated CO2 effects on aboveground biomass show, on average, a positive effect on biomass, ranging from -20% to +80%. Some early predictions of CO2 effects (C3 vs. C4 plants, N-fixers, C:N in litter) are not generally supported, and it... |
Tipo: Peer-Reviewed Reports |
Palavras-chave: Agriculture; Biomes; Carbon dioxide; Climate; Dynamics; Ecosystem functioning; Global change; Impacts; Land use; Terrestrial biosphere; Vegetation changes.. |
Ano: 1997 |
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van Coller, Lynn; UBC; lvcoller@nbs.co.za. |
The mathematics required for a detailed analysis of the behavior of a model can be formidable. In this paper, I demonstrate how various computer packages can aid qualitative analyses by implementing techniques from dynamical systems theory. Because computer software is used to obtain the results, the techniques can be used by nonmathematicians as well as mathematicians. In-depth analyses of complicated models that were previously very difficult to study can now be done. Because the paper is intended as an introduction to applying the techniques to ecological models, I have included an appendix describing some of the ideas and terminology. A second appendix shows how the techniques can be applied to a fairly simple predator-prey model and establishes the... |
Tipo: Peer-Reviewed Reports |
Palavras-chave: Bifurcation; Computer analysis; Dynamical systems; Ecological models; Qualitative analysis; Ratio-dependent model; XPPAUT.. |
Ano: 1997 |
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Registros recuperados: 2.004 | |
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