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ENV510 Landscape Ecology and GIS
Definitions
& descriptions |
Structure
& pattern | Function
& process | Change
& dynamics | Management
implications
Processes
| Elements
| Transformation
| Size | Shape
| Position | Fragmentation
| Ecosystem
| Other
Size of a remnant
patch
- The
smaller the remnant, the greater the influence external factors are likely
to have on the species within the remnant
- In small
remnants, ecosystem processes are driven by external rather than internal
forces
- Large
remnants have a large core that is not affected by edge
effects
- The
minimum size an ecosystem needs to be to preserve its species diversity and
composition is unknown
- Larger
remnants usually have more habitat diversity than smaller remnants
- Remnant
size determines potential population size
- Larger
populations have higher levels of heterozygosity
than small isolated populations - heterozygosity refers to genetic variability
and is important for long term viability
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