View
219
Download
1
Tags:
Embed Size (px)
Citation preview
ESRM 450Wildlife Ecology and Conservation
FOREST PATTERN
Managing Stands, Landscapes, and Habitat
Are these forest patterns good or bad wildlife habitat?
Landforms and climate affect forest patterns
Predictable spatial patterns
Landforms and climate affect forest patterns
Riparian systems have distinctive landform –
vegetation patterns
Scale measures or quantifies differences among observations
Extent (or range) describes the realized scope of a phenomenon or entity of interest
Grain (or resolution) describes how finely observations within the extent are divided or distinguished
Grain varies as a function of natural and human-caused factors
How does grain
affect habitat?
Forest loss Heterogeneity can be
vs. retained through awareness
fragmentation of landscape features
Habitat loss and fragmentation patterns
Edge habitat increases rapidly as fragment size decreases
Riparian forests have linear features but with variability in habitat configuration
Channel configuration affects riparian buffers
Spatial complexity varies as a function of cutting pattern
What are the implications for habitat?
Patch size in the Cascade Range
Riparian buffers determine spatial complexity
Willamette NF forest plan
Northwest Forest Plan riparian reserves
What are the implications for habitat, fire disturbance?
What kinds of data would you collect to characterize habitat in this landscape?
How do you quantify populations of highly mobile organisms in a patchy landscape?