A new study has revealed that certain sea stars rival polar bears as the most prolific predators in coastal Arctic ecosystems.
In coastal ecosystems around the Arctic peninsula, polar bears have long been considered the top predators. But a new study suggests that sea stars could be surprising contenders to rival the famous white bears at the summit of the local food web.
In marine food webs, researchers often focus on pelagic, or open water, food chains that contain tiny, surface-dwelling plankton all the way up to large predators such as polar bears , which often sit at the top of multiple food chains. But the seafloor, or benthic, realm is often overlooked in marine food webs because scientists believed it has no real top predators of its own.
The researchers analyzed data on 1,580 individual animals living in the Southampton Island coastal ecosystem to create the new food web. They found that the benthic and pelagic components each had a similar number of steps, or trophic levels, in their respective food chains.
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