Anthropogenic influences on hydrocarbon contents of sediments deposited in eastern Lake Ontario since 1800 |
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| Authors: | R A Bourbonniere P A Meyers |
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| Institution: | (1) Environment Canada, National Water Research Institute, Burlington, Ontario L7R 4A6, Canada, CA;(2) Department of Geological Sciences and Center for Great Lakes and Aquatic Sciences, The University of Michigan, Ann Arbor, Michigan 48109-1063, USA, US |
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| Abstract: | The amounts and types of extractable hydrocarbon components in sediment cores from the Rochester Basin of eastern Lake Ontario
provide a record of environmental changes that have accompanied the settlement and population growth of the surrounding land
areas. Sediments deposited prior to the mid-1800s contain low concentrations of hydrocarbons that are dominated by land-plant
wax components. Concentrations begin to rise in the late 1800s as erosion of soil and nutrients from watershed areas accelerated.
This pattern continues into modern times. Episodes of enhanced aquatic productivity are sometimes recorded in twentieth-century
sediments by the dominance of algal hydrocarbons, but land-plant components typically predominate. Petroleum residues begin
to appear in sediments deposited in the late 1800's but remain minor constituents of the hydrocarbon contents of modern sediments
in the Rochester Basin.
Received: 21 March 1995 · Accepted: 11 August 1995 |
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| Keywords: | Organic carbon n-Alkanes Petroleum residues Sediments Lake Ontario |
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