National Geographic News


"Gathering Summer Storm"

Saving the Ducktrap's wild salmon requires preserving the biodiversity of the entire region. For example, small freshwater mussels called margaritiferas are carried far upriver by salmon when they migrate, spreading throughout the river and its tributaries. In exchange, as mussels absorb nutrients from the water, they filter and expel other nutrients more easily digestible by salmon and other animals.

Photograph by Dennis C. Shultz
Book Title:
To Save a River
Aperture Foundation, Inc.

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