Statistical Tools
1. Spatial structures
•
Ripley’s K
2. Relationships
•
Mantel’s test
Environmental
factors
3. Predictive habitats models
•
Classification and Regression Tree (CART)
•
Logistic regression : probability of occurrence
•
Geographic Information System (GIS)
The first tests will describe the spatial structure of the sightings data.
And will tell us if there are positive- clumping associations, or negative associations between the cetacean sightings
Next we will look for relationships to environmental factors using Mantel’s tests
This is a useful tool for analysis of autocorrelated data
It will define the effects of space on animal distributions and spatial structures of environmental factors
And define whether an environmental factor has a significant relationship after accounting for the spatial autocorrelation
Finally, we will generate predictive habitat models using…