Aufwuchs

A German term for "surface growth" or "overgrowth". A community of small animals and plants that adhere to surfaces in aquatic environments. Green algae and diatoms make up the dominant component of an aufwuchs. Small crustaceans, rotifers, and protozoans are also commonly found in both fresh water and marine aufwuchs faunas, while insect larvae, oligochaetes and tardigrades are peculiar to freshwater aufwuchs faunas. An English pronunciation might be "OWF-vooks".

Alternative Terms

epiphyton
periphyton
Aufwuchs
Image Credit: Mark Edlund
Cocconeis and a protozoan form an aufwuchs growing on the green alga Cladophora.