[R-sig-eco] ANOSIM-Beginner

[yy.loh at york.ac.uk]

Hi, 

I have a silly question about anosim in R, this is because i couldn't find 
the answer in any R Help or yet to find one from google. i.e.: How to 
interpret the result from summary(dune.ano) in anosim?


> summary(dune.ano)

Call:
anosim(dat = dune.dist, grouping = Management) 
Dissimilarity: bray 

ANOSIM statistic R: 0.2579 
      Significance: 0.016  <---May i know the null hypothesis for test?

Based on  999  permutations

Empirical upper confidence limits of R:
  90%   95% 97.5%   99% 
0.112 0.166 0.200 0.281 

Dissimilarity ranks between and within classes:
        0% 25% 50% 75% 100% N <---The implications from this table. Between 
4 58.50 104.00 145.500 188.0 147 BF 5 15.25 25.50 41.250 57.0 3 HF 1 7.25 
46.25 68.125 89.5 10 NM 6 64.75 124.50 156.250 181.0 15 SF 3 32.75 53.50 
99.250 184.0 15


Thanking you guys in advance.

Sincerely Yours,
J