Hi, Summer. FWIW, I believe that's one of many examples of "biomass" misspelled, and a librarian at Chem. Abst. confirmed. Google finds a few other citations of the same research paper using "Biomass" correctly in context - http://tinyurl.com/5aw78h
BIOMESS is a descriptive pun/portmanteau derived from blending BIOMASS (quantified amount of living matter in a given area) and BIOMES (regional or global biotic/ecological communities often defined by climate or dominant plant/animal species) and MESS to essentially indict man's impact on nature and the environment, the biosphere... life on earth.
Earliest known use - circa 1993, coined by The Suburban Naturalist for his single-panel cartoon series of the same name. Google now shows a 1992 paper on computers and problems with automated spell checkers linking biomess to misspellings of biomass. Most recent links show a colloquial morphing that now taints biomess with a noxious, odiferous connotation. C'est la vie. (oh look, another pun)