Author: | van Dijk, G.M., and B. van Zanten |
Article Title: | Seasonal changes in zooplankton abundance in the lower Rhine during 1987-1991 |
Keywords: | Brachionus leydigii, River zooplankton, Brachionus angularis, Brachionus calyciflorus, Keratella cochlearis, Keratella
quadrata, abundance |