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Echinobase
ECB-ART-37015
Science 1998 Oct 16;2825388:473-6. doi: 10.1126/science.282.5388.473.
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Killer whale predation on sea otters linking oceanic and nearshore ecosystems

Estes JA , Tinker MT , Williams TM , Doak DF .


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After nearly a century of recovery from overhunting, sea otter populations are in abrupt decline over large areas of western Alaska. Increased killer whale predation is the likely cause of these declines. Elevated sea urchin density and the consequent deforestation of kelp beds in the nearshore community demonstrate that the otter''s keystone role has been reduced or eliminated. This chain of interactions was probably initiated by anthropogenic changes in the offshore oceanic ecosystem.

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Genes referenced: LOC100887844 LOC115925415