The macrophytic vegetation of the draw‐down area of Lake Kainji, Nigeria

摘要

SummaryRecent publications on the vegetation of Lake Kainji, Nigeria, give the impression thatEchinochloa pyramidalisis the dominant macrophyte species of the lake. However, our experience of working on the lake since 1979 suggests a different floristic composition of the macrophyte vegetation of the lake. The most frequent macrophyte in Lake Kainji isEchinochloa stagnina.At all sites investigated, emergent macrophytes are more important than floating macrophytes.There is a possible successional shift from anEchinochloa pyramidalissere to anEchinochloa stagninastage. This argument does not, however, preclude the possibility of a mis‐identification by early worker