Measuring Species Diversity Environmental scientists are often interested in evaluating both species richness and species
evenness, so they have come up with indices of species diversity that take both measures into
account. One commonly used index is Shannon's index of diversity. To calculate this index, we must
know the total number of species in a community (n) and, for each species, the proportion of the
individuals in the community that represent that species (p). Once we have this information, we can
calculate Shannon's index (H) by taking the product of each proportion (p) and its natural logarithm
[In (P) and then summing these products, as indicated by the summation symbol (2):
H=-
SpIn (P)
Σ

oak trees? ? what was listed

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.

condensation. good luck!