Fungi were isolated and identified in ten aircraft that had been operating in marine tropical environments. Distribution and growth of fungi depended on availability of water and nutrients. Laboratory experiments demonstrated that surface washes, including the approved military maintenance procedure, were ineffective in removing fungal hyphae embedded in polyurethane coatings. Surface cleaning removed spores and discoloration associated with fungi, but fragments of the hyphae remained and grew as soon as conditions were favorable. Aged coatings fouled more rapidly than new coatings. Fungicides incorporated into the topcoats produced mixed results. Bare aluminum suffered localized corrosion when colonized by fungi.
Thisreport presents information about benthic raacroinvertebrates identified in sediment cores collected in the St Marys River in 1987.It is one of several component studies completed by the Ontario Ministry of the Environment during the 1986-1987 MISA Pilot Site Study for the purpose of assessing the impact of discharges from Algoma Steel Corporation to St Marys River.The benthic species and benthic community composition were analyzed in relation to core depth, sample distance from contaminant sources, and contaminant levels.Data and conclusions from this survey and other component studies will be incorporated into the forthcoming St Marys River Pilot Site Study Report. * Great Lakes Section field staff (Emery Law, Greg Hobson, Rick Savage) for logistical support and for the processing of core samples;* staff of the Trace Organics and * Keith Somers of Great lakes Section for his suggestions regarding statistical analysis and for his assistance during the review of the draft report.This study was funded, in part, by Environment Canada under the terms of the Canada-Ontario Agreement respecting Great Lakes Water Quality.
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