The main conservation principles (of energy, mass, momentum etc) are already incorporated, but beyond that I am not aware of anything of this sort. (realclimate.org)
Similar conservation principles also apply to man's life - in - relation. (religion-online.org)
In May 2001, five non-profit organizations that work on coffee conservation issues (Conservation International, Consumer's Choice Council, Rainforest Alliance, Smithsonian Migratory Bird Center, and the Summit Foundation) took a step toward creating a unified front by releasing a document entitled «Conservation Principles for Coffee Production.» (virtualcoffee.com)