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Wastewater discharge from urbanization to the north and east of Edgartown Great Pond has been identified as the primary source of increased nitrogen loading in the pond, according to a new study by a scientist with �������� in Woods Hole.

“Human development of the land is causing more and more nitrogen being put into . . . our coastal ponds and estuaries,” researcher Javier Lloret told a webinar audience last Thursday in the kickoff of a series sponsored by the Great Pond Foundation. His pilot study used non-radioactive atoms called stable isotopes to trace both the sources and the effects of excess nitrogen in the pond.��

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