Correlation value (r-value) Environmental factors
BOD pH Temperature of water Rainfall
-0.223 -0.713* -0.439 0.321**
1 0.62 0.315 -0.608
0.62 1 0.524 -0.52
0.315 0.542 1 -0.573
-0.608 -0.52 -0.573 1
Table 6: Result of Pearson’s correlation analysis between compositions of
helminthes in frogs.