Question

Two areas of forest were surveyed for rodents, and the relative abundance of their species are summarized in the table below:

White-footed mouse Deer mouse Chipmunk Fox squirrel Red-backed vole Forest Edge Forest Interior 35% 0% 0% 20% 10% 25% 15% 40% 55% 0%

When comparing these two communities, the Sorenson's Coefficient of Community would be equal to _____ , while the %Similarity would be equal to __________

A. 57%; 65%

B. 57%; 50%

C. 50% 65%

D. 50%; 57%

E. 40%; 65%

F. 40%; 50%

Answer 1

coefficient of similarity 2*c1+c2/X+y 2* 10+40/ 195 = 50% ( c -= species in common )

coefficient of community= c/total species - species in common

55/195-55 = 40%