Tests of CSR of Oklahoma dataset
The first set of analyses on the 13 study sites in the Oklahoma (OK)
dataset included all living and dead redcedar, Quercus, and
deciduous trees (OK all trees ) found no evidence of any site
differing from CSR. When K-function tests were run on only the live
redcedar, Quercus , and other deciduous trees (OK living
trees ), visual checks of the envelopes indicated possible
overdispersion at Sites 2, 11, and 12 between ~1-3 m but
DCLF testing indicated no significant departure from CSR. Visual
assessment of the K-functions indicated potential clustering of Sites 9
and 13 but DCLF testing indicated only Site 9 was found to have a
significant (p = 0.048) departure from CSR between 1-3 m (not shown).
However, when the OK all trees data were analyzed with K-function
envelopes weighted by tree diameter, six sites showed signs of
overdispersion (Figure 3). Subsequent DCLF testing adjusted for tree
diameter confirmed overdispersion for sites 3, 8, 9, and 12. Visual
inspection of the K-function tests weighted by tree diameter found
probable overdispersion in sites 1, 2, 3, 4, 8, 9, 10, and 12 of theOK living trees dataset and DCLF testing confirmed overdispersion
in site 2 (p = 0.104), site 3 (p = 0.044), site 8 (p = 0.021), site 9 (p
= 0.036), and site 12 (p = 0.013).