Porpoises have to be careful in the Eastern Scheldt

The surprising conclusion of the doctoral research project on the feeding ecology of porpoises by Okka Jansen at Wageningen University is that the Eastern Scheldt may be an ecological trap. She also discovered that more than just examinations of stomach contents are required to find out what porpoises eat. The analyses of stable isotopes and fatty acids have produced astonishing new data as well as more accurate information.

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