Scientists uncover why urchins are mowing down California's kelp forests

Purple sea urchins are munching their way through California's kelp forests at a speed and scale that have stunned scientists, fishermen and divers alike. But the kelp forests have long been home to red and purple urchins, so it's clear the three species can get along. Researchers at UC Santa Barbara sought to determine what factors disrupt this harmony.

from Phys.org - latest science and technology news stories https://ift.tt/PCE5fkh

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