OBSERVATIONS ON BRYOZOAN ECOLOGY IN FARM PONDS

Abstract

Bryozoan colonies were common in farm ponds. Plumatella repens Linnaeus and P. casmiana Oka were dominant. Pectinatella magnifica Leidy occasionally became abundant. Plumatella developed branched colonies when protected from fish; unbranched colonies developed where they were exposed to bluegills. Numerous kinds of animals were associated with bryozoan colonies. Chironomid larvae were dominant cohabitants.