© Dee Breger

Back to November 2002 press release

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HUDSON RIVER DIATOM: Diatom species that have adapted to life in brackish water are common in tidal estuaries, where salty marine water mixes with the fresh waters brought down to the sea by rivers. Since the Hudson River is swept by marine tides up to 35 miles north of New York City, it is officially considered an estuary below that boundary. This brackish water diatom was found buried in Hudson sediments near West Point by Lamont marine geologist and Queens College (NY) professor Cecilia McHugh, and determined by isotope age-dating techniques to have lived within the last forty years. Magnification ~ 1894 X