Cycles of macrophytes and phytoplankton in Pukepuke Lagoon following a severe drought.
A three year survey of the aquatic vegetation of a New Zealand dune lake is described. Pukepuke Lagoon is a shallow (max. depth 85cm.), slightly saline lagoon with 15ha of open water. Its inflows drain intensively farmed land and are rich in nutrients, especially phosphorus. Dense macrophyte crops characterised the lagoon each spring but the component species differed each year.