ESRM 450 Wildlife Ecology and Conservation FOREST PATTERN Managing Stands, Landscapes, and Habitat.
ESRM 441 Landscape Ecology - University of...
Transcript of ESRM 441 Landscape Ecology - University of...
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ESRM 441 Landscape Ecology
Dr. James A Freund [email protected] Website: http://courses.washington.edu/esrm441
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What is a landscape?
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an area composed of multiple distinct elements that create pattern
Landscape:
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What is landscape ecology?
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the study of both the causes of ecological pattern and the effects of pattern on ecological processes
-J. A. Wiens
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Landscape ecology emphasizes broad spatial scales and the ecological effects of the spatial patterning of ecosystems.
-M. G. Turner
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Landscape ecology focuses explicitly on spatial patterns. Specifically... the development and dynamics of spatial heterogeneity, spatial and temporal interactions and exchanges across heterogeneous landscape, influences of spatial heterogeneity on biotic and abiotic processes, and management of spatial heterogeneity.
-P. G. Risser
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A new paradigm
Space, pattern, and heterogeneity matter
A broader approach to ecology
Emphasis on scale
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Issue of scale is profound!
• Ecological understanding assumed an ability to extrapolate over spatial areas
• Studies attempted to predict phenomena without considering its size or position
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Classification of Major Plant Associations von Humboldt 1807
The roots of landscape ecology
Geography Troll 1939
Ecosystems Tansley 1935
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The European School
Altered and managed environments Human element Landscape architecture and design
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Island biogeography
MacArthur and Wilson 1967
Spatial ecology
Kareiva et al. 1980’s
Hierarchy theory
Allen and Starr 1982
The American school
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A young, evolving discipline
Descriptive studies
Tool development Evolution of
theory Testing
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An integrated discipline
Community ecology
Conservation biology
Population biology
Geography
Ecosystem ecology
Behavioral Biology
Sociology Economics
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Definitions
Landscape: an area composed of multiple distinct elements that create pattern
Heterogeneity: consisting of distinct elements
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Definitions
Scale: spatial and temporal dimensions
Extent: total area or duration
Grain: finest level of resolution possible
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Definitions
Patch: an area that differs from its surroundings
Matrix: the background, not all landscapes have a matrix
Composition: a quantitative or qualitative description of the elements that make up the landscape
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Definitions
Fragmentation: breaking a landscape up into disconnected patches Lee
Configuration: the spatial arrangement of a landscape
Connectivity: Continuity in a particular element of the landscape
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Definitions
Corridor: landscape element that connects two or more patches Lee
Edge: the portion of one landscape element that abuts another
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Topics Covered
Approaches to landscape ecology
Drivers of pattern
Scale
Measuring patterns
Effects of pattern on process
Models
Applied landscape ecology
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Approaches to landscape ecology
(Landscape ecology and the scientific method)
Experiment Observation Model system Modeling
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Tewksbury et al. 2002
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McIntyre and Wiens 1999
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Ecke et al. 2006
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The causes of landscape pattern
Topography
Hydrology
Climate
Geology
Disturbance
Ecosystem processes
Interspecific interactions
Human activities
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Scale
Scaling in ecological systems
Hierarchy theory
Incorporating scale into ecological studies
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Roland and Taylor 1997
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Measuring pattern
Mapping landscapes
-remote sensing
-GIS
Pattern metrics
Spatial statistics
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Effects of pattern on process
Behavior Community structure
Population dynamics
Ecosystem processes
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McRae 2004
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Kyle & Strobeck 2001
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Modeling landscape processes
Spatially explicit population models
Ecosystem models
Dynamic vegetation models
Null models
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Hulse et al. 2002
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Applied landscape ecology
Fragmentation
Connectivity
Corridors
Reserve design
Reserve selection
Disturbance
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Esseen and Renhorn 1998
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Fisher reintroduction study, Washington
Lewis and Hayes 2004
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Landscape Ecology
Lecture/Discussion Tues 9:30-11:20 (WFS 107) Thurs 1:30-3:20 (WFS 107) 2-3 labs during scheduled class time Bloedel Hall 261 Readings Turner et al. Text & papers Short papers 2, 5 pages, double spaced & 1
field trip report Presentations 5 minutes on paper #2
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Landscape Ecology
Midterm exam: In class midterm exam Final exam: Take-home exam assigned last week of
class and due Wednesday of finals week Field trip: Fri, October 4 to Sun, October 6 (weather permitting)
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Landscape Ecology
Papers 30% Midterm 20% Participation 20% Final exam 30%
Grading