Higher CO2 concentrations lower the nutritional quality of the terrestrial litter (Lindroth et al., 2001; Tuchman et al., 2002, 2003a, 2003b) which in turn will affect the food web relationships of benthic communities in rivers. (ipcc.ch)
Biofilms also influence the structure and functioning of marine benthic communities by promoting or inhibiting the settlement of algal and invertebrate propagules [45 — 47]. (rstb.royalsocietypublishing.org)
[11][12] The males mostly feed on benthic organisms on the ocean floor. (en.wikipedia.org)