Abstract
Water samples from Jeddore Harbour, Nova Scotia, that passed through a 400-μm screen were examined at monthly intervals between November 1970 and December 1971. They were found to contain 16–390 μg extractable lipid/ℓ water. The fatty acid content of the lipids was characterized by low levels of unsaturation and a predominance of components of moderate chain length (C14–C18). The content of n-alkanes recovered from the water samples varied normally from 1 to 10 μg/ℓ water and could not be given a specific origin, although certain details pointed to local pollution as the primary origin. In particular, pristane and phytane virtually disappeared during the period of winter ice-cover when local boat operations ceased. Neither hydrocarbon nor fatty acid details could be conclusively related to unusually high levels of odd-chain fatty acids found in Jeddore Harbour rainbow smelt, Osmerus mordax. The impact of hurricane Beth was unexpectedly low, implying that the unusual freshwater runoff did not mix with the normal salt water or disturb the basically marine character of Jeddore Harbour. Key words: Jeddore Harbour, odd-chain hydrocarbons, odd-chain fatty acids, dissolved hydrocarbons, pristane, phytane, ice cover, hurricane runoff
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