You searched for: “biodetrita
biodetritus (s) (noun); biodetritus, biodetrita (pl)
The disintegration and decomposition of once-living organisms: Biodetritus includes such elements as phytodetritus or zoodetritus, depending on whether the original organism was vegetable or animal.

Biodetritus involves matter that is produced by or which remains after the wearing away or disintegration of tissue or other substances from the living organisms.