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CRITICAL POINT DRYING AS A PREPARATIVE TECHNIQUE FOR SCANNING ELECTRON MICROSCOPY AND ITS APPLICATION IN LIMNOLOGY
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: R. H.M. Cross --- , South Africa B.R. Allanson --- , South Africa B.R. Davies --- , South Africa C. Howard-Williams --- , South AfricaThe preservation technique of critical point drying for use with the scanning electron microscope is described. A study of the periphyton community development on the aquatic macrophyte, Potamogeton pectinatus L. from the littoral zone of Swartvlei, southern Cape Province, is... -
CHLOROPHYLL-a CONCENTRATION IN THE LOWER KAFUE RIVER AND CHONGWE RIVER BASINS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Petr Obrdlik --- , Federal Republic of GermanyThe concentration of chlorophyll a was measured in the warm monomictic impoundment, Itezhi-tezhi Lake ([xbar] = 2,00 mg m−3); in the small, slightly polluted Chongwe Dam ([xbar] = 11,0 mg m−3); and in the temporary Mungasiya River ([xbar] = 53,4... -
Spatial quality improvement of a toxic industrial effluent, based on physico-chemistry, algal community changes and algal bioassay
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MI Abdel-Hamid --- Botany Department, Egypt EI Abdel-Aal --- Botany Department, Egypt YA Azzab --- Botany Department, EgyptSpatial recovery of a highly alkaline and ammonia-rich industrial effluent was assessed along a wastewater receiving drain near Mansoura City in 2006. Spatial changes in physico-chemical characteristics and water quality index indicated a progressive downstream improvement of wastewater quality, and... -
CHLOROPHYLL-a CONCENTRATION IN THE LOWER KAFUE RIVER AND CHONGWE RIVER BASINS
Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: Petr Obrdlik --- , Federal Republic of GermanyThe concentration of chlorophyll a was measured in the warm monomictic impoundment, Itezhi-tezhí Lake ([xbar] = 2,00 mg m−3); in the small, slightly polluted Chongwe Dam ([xbar] = 11,0 mg m−3); and in the temporary Mungasiya River ([xbar] = 53,4...