Observations on the plankton of some Costa Rican lakes Kurt A. HaberyanGerardo V. UmañaSally P. Horn OriginalPaper Pages: 75 - 85
Ecological hazard/risk assessment: lessons learned and new directions John Cairns Jr.Kenneth L. Dickson OriginalPaper Pages: 87 - 92
Differences in allozyme patterns between Diaphanosoma brachyurum and Diaphanosoma mongolianum, as revealed in Central European populations Jakob MüllerAlfred Seitz OriginalPaper Pages: 107 - 114
Growth pattern and cellular nitrogen and phosphorus contents of the dinoflagellate Peridinium penardii (Lemm.) Lemm. causing a freshwater red tide in a reservoir Zen'ichiro KawabataYumiko Hirano OriginalPaper Pages: 115 - 120
Chemical and isotopic composition of karstic lakes in Jamaica, West Indies J. A. HolmesF. A. Street-PerrottP. E. Hales OriginalPaper Pages: 121 - 138
Enhanced early detection and enumeration of zebra mussel (Dreissena spp.) veligers using cross-polarized light microscopy Ladd E. Johnson OriginalPaper Pages: 139 - 146