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Morphology of the prostrate thallus of Stigeoclonium (Chlorophyceae, Chaetophorales) and its taxonomic implications
Abstract The prostrate thallus of Stigeoclonium was studied under defined culture conditions. The development from zoospore to adult stage was followed in detail with the result that no more thanExpand
Induction of conjugation and spore formation in species of Spirogyra (Chlorophyceae, Zygnematales)
SUMMARY Based on experiences of Grote (1977) with Spirogyra majuscula, methods are described to induce the mating process and the formation of spores in several Spirogyra species. NitrogenExpand
SPOROPOLLENIN IN THE SPORE WALL OF SPIROGYRA (ZYGNEMATACEAE, CHLOROPHYCEAE)
SUMMARY The acetolysis resistant mesospore walls of Spirogyra were investigated by infrared spectrometry and chromic acid degradation. It was demonstrated that the mesospore wall contains chromicExpand
Effects of phosphorus and nitrogen enrichment on the yield of some strains of Stigeoclonium Kütz. (Chlorophyceae)
SUMMARY. 1 The combined effect of nitrate and phosphate concentrations on the yields of five selected strains of Stigeoclonium is demonstrated in a synthetic medium as well as in natural waters.Expand
STRUCTURE AND CHEMICAL COMPOSITION OF THE SPORE WALL IN SPIROGYRA (ZYGNEMATACEAE, CHLOROPHYCEAE)
SUMMARY Spores of twenty species of Spirogyra were treated by acetolysis and viewed by scanning electron microscopy. The terms exo-, meso- and endospore should be maintained and based on chemicalExpand
GROWTH CONTROL OF TRIBONEMA MINUS (WILLE) HAZEN AND SPIROGYRA SINGULARIS NORDSTEDT BY LIGHT AND TEMPERATURE
SUMMARY Optimum growth in uni-algal cultures of Tribonema minus (Wille) Hazen, a dominant alga in blanketing algal mats in the early spring, was obtained at temperatures between 15–25°C and lightExpand
Bioassays with Stigeoclonium Kütz. (Chlorophyceae) to identify nitrogen and phosphorus limitations
Abstract Eleven strains of the filamentous algae genus Stigeoclonium Kutz. (Chlorophyceae) were tested as bioassay organisms to identify nitrogen and phosphorus limitations to growth in a variety ofExpand
Water sample treatments and their effects on bioassays using Stigeoclonium helveticum vischer
Abstract The effects of different pretreatments on the chemical properties of test waters and their effects on bioassays using Stigeoclonium helveticum Vischer were evaluated. All treatments removedExpand
Bioassays using Stigeoclonium tenue Kütz. and Scenedesmus quadricauda (Turp.) Bréb. as testorganisms; a comparative study
Three different bioassays, two culture tube test methods with respectively Stigeoclonium tenue or Scenedesmus quadricauda and one bottle test with S. quadricauda, were compared. The yields obtainedExpand
Bioassays with Stigeoclonium tenue Kütz. on waters receiving sewage effluents
Abstract Stigeoclonium tenue Kutzing (Chlorophyceae) was tested as bioassay organism on water receiving effluents of two sewage treatment plants. The PO4P and NH4N concentration declined withExpand
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