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This site, from the National Oceanic and Atmospheric Administration, reports on environmental recovery since the March 1989 Exxon Valdez oil spill. It provides explanations of ecosystem recovery, the toxicity of oil, oil weathering, and fingerprinting (determining where a hydrocarbon residue originated). As evidence of the resiliency of the ecosystem, there is a photo time series of a plot on Block Island and photos of recolonization on rocks at Herring Bay. To show how plants and animals are adjusting, there are graphs of the pink salmon harvest and abundance of periwinkle snails and rockweed cover in the years since the spill. Information is provided on findings of NOAA's long-term monitoring program at Prince William Sound to improve future oil spill cleanups.
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