I understand you are evaluating the impact of forest management on ecosystem functions. If this is correct, I would like to know which functions you are going to evaluate? I guess you eventually will add the methodology.
You must consider the functions which were decreasing before the forest management. I think biocentric functions are prior to anthropocentric functions of forest in this case.
I think these are good indicators that is also possible to measure. Biodiversity would be more difficult in particular because it changes all the time. I appreciate your response and looking forward to learn about updates.
In my opinion, different ecosystem function can be classify when the study site(s) done in physically and/or ecologically distinct to each other. Example, wetland forests (highlight as the water body as main physical characteristic); highlands (higher altitudes); and so on.
I use a species, eastern brook trout, as a principal indicator species in the forest regions I monitor. I then set up classification equations for discriminant analysis by evaluating water quality monitoring data that's been collected over years. The metrics best correlated with the presence of brook trout are selected for my linear regression models.