Oberholster, Paul JohanBotha, Anna-MariaCloete, T.E. (Thomas Eugene), 1958-2007-09-112007-09-112005Oberholster, PJ, Botha, A-M & Cloete, TE 2005, 'Using a battery of bioassays, benthic phytoplankton and the AUPR PVAP method to monitor longterm coal tar sediment in the Cache la Poundre River.' Water Research, vol. 39, pp. 4913-4924. [http://www.sciencedirect.com/science/journal/00431354]0043135410.1016/j.watres.2005.08.029http://hdl.handle.net/2263/3453This survey provides information on sediment toxicity and structural characteristics of the macroinvertebrates and benthic phytoplankton at 10 locations in the Cache la Poudre River after long-term exposure to coal tar sediment. The application of the Australian river bioassessment system (AUSRIVAS) as well as a biotest battery was used to evaluate the river ‘health’ condition. Coal tar is a dense nonaqueous-phase liquid of significant environmental concern due to its toxicity and persistence in the subsurface. Organisms like Selenastrum capricornutum, Daphnia magna and Chironomus tentans, representing different complexities in the biosphere, were selected as test systems for ecotoxicological studies. The results obtained in this study indicate that a biotest battery, macroinvertebrate and benthic phytoplankton communities are in principle suitable biological tools for evaluation of toxic oil and coal-derived substances in long-term contaminated river sediment.297135 bytesapplication/pdfenElsevierSediment toxicityBiotest batteryRiver bioassessmentCoal-tar -- Colorado -- Cache la Poundre RiverWater -- Toxicity testing -- Cache la Poundre RiverWater -- Pollution -- MeasurementWater quality bioassay -- Colorado -- Cache la Poundre RiverBenthic plants -- Colorado -- Cache la Poundre RiverPhytoplankton -- Colorado -- Cache la Poundre RiverNonaqueous phase liquidsEnvironmental toxicology -- Colorado -- Cache la Poundre RiverContaminated sediments -- Colorado -- Cache la Poundre River