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) in
the East Bay, California
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Method
How does connectivity affect the populations of
Puma concolor in the Southern half of the Bay
Area?
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Zonation

• Core Habitat for Mt. Lion
• Weighted
• 100 Mt. Lion
• 33 Mule Deer

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Circuitscape Connectivity Analysis
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Circuitscape connectivity analysis
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Population Viability Analysis
Zonation Output
Ramas Metapop
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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
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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

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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?

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Questions?