SAPROBIC
saprobic
(adjective) living in or being an environment rich in organic matter but lacking oxygen
Source: WordNet® 3.1
Etymology
Adjective
saprobic (not generally comparable, comparative more saprobic, superlative most saprobic)
(biology) Of, pertaining to, or of the nature of a saprobe or saprobes; that feeds on dead or decaying organic matter.
(ecology) That contains dead or decaying organic material (and therefore also saprobes).
Usage notes
In the ecological sense, a zone is more saprobic than another if it scores higher on a scale that depends on the number of saprobe species found, as well as the abundance of each species.
Synonyms
• (containing saprobes): saprobiotic
Source: Wiktionary