Dear Dr. Mujtaba,

Please refer to the journal in the link below. It contain many articles about the subject you asked about.

With best wishes

SM Najim

http://link.springer.com/journal/10651

Could you clarify what type of ecological data fo you have?

If you have a variety of variables (time, pH,... n var.). I would recommend using the NMDS multivariate statistical technique. Because you have multiple scales in your variables. However, the statistical technique that you need to use depends on the nature of your data and the question you want to answer.

Best regards

Cristian Martínez

I agree with Cristian Martínez by using multivariate statistical analysis if you have a variety of variables.

Regards