ARCATA, Calif. — It took the death of a small, rare member of the weasel family to focus the attention of Northern California’s marijuana growers on the impact that their huge and expanding activities were having on the environment.
Jim Wilson/The New York Times
While some marijuana farms divert and dry up streams, this grower uses conservation methods like a rainwater holding pond.
The animal, a Pacific fisher, had been poisoned by an anticoagulant in rat poisons like d-Con. Since then, six other poisoned fishers have been found. Two endangered spotted owls tested positive. Mourad W. Gabriel, a scientist at the University of California, Davis, concluded that the contamination began when marijuana growers in deep forests spread d-Con to protect their plants from wood rats.
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