The Effect of Connectivity on Population Viability of Mountain Lion Puma concolor in the East Bay, C - PowerPoint PPT Presentation

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The Effect of Connectivity on Population Viability of Mountain Lion Puma concolor in the East Bay, C

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The Effect of Connectivity on Population Viability of Mountain Lion (Puma concolor) ... Mountian Lion Habitat in the South and East Bay is highly fragmented by roads ... – PowerPoint PPT presentation

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Title: The Effect of Connectivity on Population Viability of Mountain Lion Puma concolor in the East Bay, C


1
The Effect of Connectivity on Population
Viability of Mountain Lion (Puma concolor) in
the East Bay, California
2
Method
How does connectivity affect the populations of
Puma concolor in the Southern half of the Bay
Area?
3
(No Transcript)
4
Zonation
  • Core Habitat for Mt. Lion
  • Weighted
  • 100 Mt. Lion
  • 33 Mule Deer

5
(No Transcript)
6
Circuitscape Connectivity Analysis
7
(No Transcript)
8
Circuitscape connectivity analysis
9
(No Transcript)
10
(No Transcript)
11
Population Viability Analysis
Zonation Output
Ramas Metapop
12
Extinction Risk
6 Probability of Extinction
No Connectivity
  • 100 Years
  • Sinks dont help
  • of Populations in Total
  • Assumptions
  • Circuitscape over-represents connectivity creates
    many sinks

31 Probability of Extinction
Moderate Connectivity
96 Probability of Extinction!
Circuitscape Predicted Connectivity
13
Assumptions and Limitations
  • Relationship with mule deer
  • Visual inspection of connectivity- qualitative
  • Freeway underpass data not incorporated into
    circuitscape model
  • Demographic Parameters
  • Scale is too small- doesnt include entire
    metapop

14
But what does it all mean?
  • Mountian Lion Habitat in the South and East Bay
    is highly fragmented by roads and urban
    development
  • Survival is highly dependent on inputs from 2
    source populations
  • Connected to WHAT?

15
Questions?
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