Move over polar bears, another predator along the Arctic coast

A polar bear carries a seal carcass along the Arctic coast. (Image credit: Shutterstock)

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in coastal ecosystems about North Pole Peninsula, polar bears They have always been considered top predators. But a new study suggests that sea stars could be surprising contenders to rival the famous polar bears at the top of the local food web.

A food web is a sprawling map of ecological links that connects all the different food chains within an ecosystem. Individual food chains contain primary producers that derive energy from the sun or by recycling dead organic matter; core consumers who patronize core consumers; Then secondary or tertiary consumers who prey on all consumers below them. But organisms in one food chain can also have a place in another, or several others, so the best way to see how an ecosystem works is to link those chains together.

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