Ellen Thomas, research professor in the Department of Earth and Environmental Sciences, gathered evidence that Long Island Sound has been impacted by human activities. Posted 07/11/ 07 A Wesleyan researcher has discovered that nitrogen pollution may have altered the food chain in Long Island Sound. This can threaten habitats that support large commercial and recreational fisheries. Ellen Thomas, research professor in the Department of Earth and Environmental Sciences, has, together with Wesleyan undergraduate students, gathered evidence that Long Island Sound has been impacted by human activities, including effluents from wastewater treatment plants, waste disposal and urban and agricultural runoff. These…