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ESRM 450 Wildlife Ecology and Conservation MANAGING DYNAMIC LANDSCAPES
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Complexity, as mediated by disturbance, can exist at many spatial scales Reconstruction of fire mortality in forest burned between 1800-1900, Cascade Range, Oregon (Morrison & Swanson 1990)
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A conceptual forest landscape: Steady-state shifting mosaic Y = young, M = mature, O = old (Lertzman & Fall 1998)
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A conceptual forest landscape: Non steady-state shifting mosaic Stand dynamics vs. landscape dynamics (Lertzman & Fall 1998)
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A landscape state-space diagram: Spatial and temporal disturbance patterns Can you think of systems represented by these conditions? (Lertzman & Fall 1998)
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Landscape and stand diversity: Effects of disturbance and management (Lertzman & Fall 1998)
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Tools for multiscale spatial analysis: From stands to landscapes (Lertzman & Fall 1998)
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Lertzman & Fall (1998) take-home messages Paying attention to scale matters. Multiscale study and analysis are critical for understanding the roles of disturbance. Equilibrium may not exist at any scale. Small-scale processes interact to create bottom-up controls of landscape pattern and process. Large-scale processes exert top-down control, forming a context for stand-scale dynamics. Human activities change the spatial and temporal nature of disturbance regimes. Tools for multiscaled spatial analysis are available, but can be challenging to integrate and use.
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What kinds of data would you collect to characterize forest structure, forest patterns, and wildlife habitat in this landscape?
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