Phytobenthos and phytoplankton community changes upon exposure to a sunflower oil spill in a South African protected freshwater wetland

The occurrence of a sunflower oil spill in 2007 in the Con Joubert Bird Sanctuary freshwater wetland, South Africa, inhibited the growth of sensitive phytoplankton species and promoted that of tolerant species. The algal divisions Chlorophyta and Euglenophyta were well represented in the sunflower o...

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Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 19(2010), 8 vom: 05. Nov., Seite 1426-39
1. Verfasser: Oberholster, Paul J (VerfasserIn)
Weitere Verfasser: Blaise, Christian, Botha, A-M
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Plant Oils Sunflower Oil Chlorophyll 1406-65-1 Oxygen S88TT14065
Beschreibung
Zusammenfassung:The occurrence of a sunflower oil spill in 2007 in the Con Joubert Bird Sanctuary freshwater wetland, South Africa, inhibited the growth of sensitive phytoplankton species and promoted that of tolerant species. The algal divisions Chlorophyta and Euglenophyta were well represented in the sunflower oil contaminated water, especially the species Euglena sociabilis, Phacus pleuronectes and Chlamydomonas africana. Young and mature resting zygotes of Chlamydomonas africana were recorded in high abundance at all the sunflower oil contaminated sampling sites. The phytobenthos diversity and abundance were significantly suppressed and negatively associated with low Dissolved Oxygen concentrations and the negative redox potential of the bottom sediment. At the intracellular level, phytoplankton chlorophyll a and b concentrations as physiological variables were more sensitive indicators of the adverse effects of sunflower oil than the 72 h Selenastrum capricornutum algal bioassay conducted
Beschreibung:Date Completed 28.02.2011
Date Revised 20.10.2021
published: Print-Electronic
Citation Status MEDLINE
ISSN:1573-3017
DOI:10.1007/s10646-010-0528-6