Oberholster, Paul JBlaise, CBotha, A-M2010-09-282010-09-282010-08Oberholster, P.J., Blaise, C. and Botha, A-M. 2010. Phytobenthos and phytoplankton community changes upon exposure to a sunflower oil spill in a South African protected freshwater wetland. Ecotoxicology, 2010 (Online First), pp 140963-9292http://www.springerlink.com/content/n25u542634564047/fulltext.pdfhttp://hdl.handle.net/10204/4372Copyright: 2010 Springer. This is the author's pre print version. The definitive version is published in the Ecotoxicology Journal (Online First) CopyThe 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.enChlamydomonas africanaCyanobacteriaChlorophyllLight intensityAlgal bioassayArticleOberholster, P. J., Blaise, C., & Botha, A. (2010). Phytobenthos and phytoplankton community changes upon exposure to a sunflower oil spill in a South African protected freshwater wetland. http://hdl.handle.net/10204/4372Oberholster, Paul J, C Blaise, and A-M Botha "Phytobenthos and phytoplankton community changes upon exposure to a sunflower oil spill in a South African protected freshwater wetland." (2010) http://hdl.handle.net/10204/4372Oberholster PJ, Blaise C, Botha A. Phytobenthos and phytoplankton community changes upon exposure to a sunflower oil spill in a South African protected freshwater wetland. 2010; http://hdl.handle.net/10204/4372.TY - Article AU - Oberholster, Paul J AU - Blaise, C AU - Botha, A-M AB - 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. DA - 2010-08 DB - ResearchSpace DP - CSIR KW - Chlamydomonas africana KW - Cyanobacteria KW - Chlorophyll KW - Light intensity KW - Algal bioassay LK - https://researchspace.csir.co.za PY - 2010 SM - 0963-9292 T1 - Phytobenthos and phytoplankton community changes upon exposure to a sunflower oil spill in a South African protected freshwater wetland TI - Phytobenthos and phytoplankton community changes upon exposure to a sunflower oil spill in a South African protected freshwater wetland UR - http://hdl.handle.net/10204/4372 ER -