sba_crayfish_talk2_web_version_Slide15

Slide 15 of 28

Presentation: Stream Crayfish in Mississippi: Who's Where and Why
Author(s): Dr. Susan Adams

Slide Notes...

One rule of thumb in ecology is that the number of species increases as the habitat area increases. Not true in this case.

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Slide15 of sba_crayfish_talk2_web_version. Slide text:
Crayfish and reach-scale habitat
PCA and Mantel tests
Crayfish density related only to stream size variables
Correlations: density vs. stream size
Most spp. r < 0
P. vioscai, P. ouachitae no sig. correlations
P. hayi r < 0 with area but not depth
Species-area relationship negative!