ex2015: Spotted Owl Habitat
Description
A study examined the association between nesting locations of the
Northern Spotted Owl and availability of mature forests. Wildlife
biologists identified 30 nest sites. The researchers selected 30
other sites at random coordinates in the same forest. On the basis of
aerial photographs, the percentage of mature forest (older than 80
years) was measured in various rings around each of the 60 sites.source
Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A
Course in Methods of Data Analysis (3rd ed), Cengage Learning.References
Ripple W.J., Johnson, D.H., Thershey, K.T. and Meslow E.C. (1991).
Old--growth and Mature Forests Near Spotted Owl Nests in Western
Oregon, Journal of Wildlife Management 55(2): 316--318.