Table of Contents
Factors Influencing Community Diversity
I. Factors influencing Species Diversity
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I. Factors influencing Species Diversity
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B. Resource availability
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In General:
C. Disturbance
C. Disturbance (see Fig 13.17)
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2. What is a disturbance? -
II. Composite Hypotheses
B. A new twist with a phyletic shift
SCUBA 10m to 30m
Submersible 50m - 250m
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BA Transect 10m depth
BA Transect 20m depth
BA Transect 30m depth
BA Transect 50m depth
BA Transect 75m depth
BA Transect 100m depth
BA Transect 150m depth
BA Transect 200m depth
BA Transect 250m depth
Living Cover Shannon Diversity
What controls community composition?
Control Plots
Long-term Panels
Results
Evidence for biotic disturbance
Important Grazers:
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Change indices vs. Diversity indices
Connell 1978
Support for IDH or Intermediate Change Hypothesis?
A Composite Hypothesis
A New Twist with a Phyletic Shift
Global Perspective
Human Impact:
A Tale of Two Reefs
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D. Human disturbance and diversity
Take home message:
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Author: avery
Email: averyw@csus.edu
Home Page: http://www.csus.edu/indiv/a/averyw/bio160/lectures3.htm
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