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Oregon Field Guide

Contaminated Ballast


Foreign ships entering Coos Bay carry microscopic stowaways in their ballast water that could impact Oregon’s coastal ecology. Dr. Jonathan Geller of the Oregon Institute of Marine Biology studies the water in these ships looking for the larvae and unhatched eggs of non-native species in an effort to prevent the establishment of new colonies in the bay.

First Broadcast: 1991
Producer: Jim Newman

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