de los Santos A., de Nicolás J.P., Dorta-Guerra, R. 2014. Abundance, biomass and diversity of ground-beetles (Col. Carabidae) as indicators of climatic change effects over elevation strata in Tenerife (Canary Islands). Ecological Indicator, 46, 46, 504–513

Kind regard

http://www.sciencedirect.com/science/article/pii/S1470160X14003343

PL see the link

http://www.jstor.org/discover/10.2307/4045704?uid=3738256&uid=2&uid=4&sid=21104172436071

Thanks a lot for the useful resource you sent.

Nowdays , there are better tools like use of imagery for measuring biomass or yield , sumulation modeling using NDVI versus yield /biomass level , could provide better precision ..Here are some relevant attachments..

Dear Benedict,

I suggest you to read the following article:

Liu, J., Pattey, E., Miller, J.R., McNairn, H., and Smith, A.M. (2010). "Estimating crop stresses, aboveground dry biomass and yield of corn using multi-temporal optical data combined with a radiation use efficiency model.", Remote Sensing of Environment, 114(6), pp. 1167-1177. 

Hope you find it interesting and useful.