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Space Is the Final Frontier in Ecology
History of ecology = largely nonspatial e.g., *competitors mixed perfectly with prey *homogeneous ecosystems with uniform distributions of resources Simple population models
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Space Is the Final Frontier in Ecology
History of ecology = largely nonspatial e.g., *competitors mixed perfectly with prey *homogeneous ecosystems with uniform distributions of resources But ecology = fundamentally spatial ecology = interaction of organisms with their [spatial] environment
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Vancouver Island marmot (Marmota vancouverensis)
~100 left Isolated from hoary and Olympic marmots
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Vancouver Island marmot (Marmota vancouverensis)
Natural tree succession
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Vancouver Island marmot (Marmota vancouverensis)
Logging – disjunct patches max. dispersal = 7 km - Forestry disturbance Climate Prey-Predator Dynamics
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History of Landscape Ecology
“European School” roots back to those of ecology typing, classifying, naming landscape architecture, planning, designing “American School” young = early 1980’s focus on natural systems theory & models, some field experiments
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Landscape Ecology as a Science?
Meta-analysis of papers in Landscape Ecology (Wiens 1992) – 1st 5 yrs of journal Most studies are large scale (landscapes are big) Most studies are descriptive or conceptual Experiments difficult to conduct, thus modeling Emphasis on vegetation pattern / land use pattern Humans = impt. part of systems
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Landscape Ecology as a Science?
Hobbs (1997) – 2nd 5 years of Landscape Ecology Less descriptive studies More “methods” and modeling studies, no expts. More quantitative / statistical analysis (spatial stats)
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Emergence of Landscape Ecology
? Equilibrium View Constant species composition Disturbance & succession = subordinate factors Ecosystems self-contained Internal dynamics shape trajectory No need to look outside boundaries to understand ecosystem dynamics Structure Function ? ? ?
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Emergence of Landscape Ecology
Structure Function Dynamic View Disturbance & ecosystem response = key factors Disturbance counter equilibrium Ecosystems NOT self-contained Multiple scales of processes, outside & inside Essential to examine spatial & temporal context
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Emergence of Landscape Ecology
Broad-scale Environmental Issues Landscape Ecology Concepts of Scale/Hiearchy Dynamic View Advances in Technology
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What is Landscape Ecology?
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Landscape ecology focuses on spatial heterogeneity and pattern.
1) detecting pattern 2) define origin of pattern 3) predicting change 4) relating pattern to processes & mgt
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1 m2 Often, spatial extents much larger than in traditional ecology… But, emphasize spatial pattern at relevant scale 1 km2 10’s km2
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Often, focus on role of humans in creating and influencing patterns…
But, humans only one (albeit dominant) agent
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Importance of Landscape Ecology to Conservation & Management
Ecosystem context matters Ecosystem function depends on interplay of pattern & process Policy & legal mandate to adopt landscape perspective
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Importance of Landscape Ecology to Conservation & Management
Ecosystem context matters Metapopulations
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Importance of Landscape Ecology to Conservation & Management
Ecosystem function depends on interplay of pattern & process Habitat fragmentation & Modified Disturbance Regimes
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Importance of Landscape Ecology to Conservation & Management
Policy & legal mandate to adopt landscape perspective
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