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Grasshopper Population Ecology: Catastrophe, Criticality, and Critique Ecology and Society
Lockwood, Dale R; Colorado State University; dale.lockwood@colostate.edu; Lockwood, Jeffrey A; University of Wyoming;.
Grasshopper population dynamics are an important part of the North American rangeland ecosystem and an important factor in the economies that derive from the rangeland. Outbreak dynamics have plagued management strategies in the rangeland, and attempts to find simple, linear and mechanistic solutions to both understanding and predicting the dynamics have proved fruitless. These efforts to ground theory in a correspondence with the “real” world, including whether the population dynamics are ultimately density dependent or density independent, have generated abundant heat but little light. We suggest that a pragmatic approach, in which theories are taken to be “tools” rather than competing claims of truth, has greater...
Tipo: Peer-Reviewed Reports Palavras-chave: Catastrophe theory; Complexity science; Grasshoppers; Models; Pest management; Population dynamics; Rangeland ecosystem; Self-organized criticality.
Ano: 2008
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Catastrophic Thresholds: A Synthesis of Concepts, Perspectives, and Applications Ecology and Society
Briske, David D.; Department of Ecosystem Science and Management, Texas A&M University; dbriske@tamu.edu; Washington-Allen, Robert A.; Department of Ecosystem Science and Management, Texas A&M University; washington-allen@tamu.edu; Johnson, Craig R.; School of Zoology, University of Tasmania; craig.johnson@utas.edu.au; Lockwood, Jeffrey A.; Department of Philosophy, University of Wyoming; lockwood@uwyo.edu; Lockwood, Dale R.; Biology Department, Colorado State University; dale.lockwood@colostate.edu; Stringham, Tamzen K.; Department of Animal Biotechnology, University of Nevada-Reno; tstringham@cabnr.unr.edu; Shugart, Herman H; Department of Environmental Sciences, University of Virginia; hhs@virginia.edu.
Research reported in this feature identifies a convergence of interpretations regarding the threshold dynamics of complex ecological systems. This convergence has arisen from a diverse set of investigations addressing rangeland ecosystem dynamics, disease transmission, and fluctuations in the populations of insect pests. Effective application of the threshold concept to ecosystem management will require development of more robust linkages between non-equilibrium theory and protocols to identify triggers that initiate threshold conditions, feedback loops that establish system resilience, and developmental trajectories and attributes of potential alternative stable states. Successful implementation of these theory/application linkages has the potential to...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Complexity science; Ecological resilience; Non-equilibrium ecology; Self-organized systems; Systems theory.
Ano: 2010
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