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A dish of polychaete worms and one mollusk awaits further sorting.

A dish of polychaete worms and one mollusk awaits further sorting.
A dish of polychaete worms and one mollusk awaits further sorting.
A dish of polychaete worms and one mollusk awaits further sorting.
A dish of polychaete worms and one mollusk awaits further sorting.
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348126
Linder, Christopher L.
A dish of polychaete worms and one mollusk awaits further sorting.
Still Image
04/08/2009
graphics/PD5_dailys/cl_20090408154256.jpg
Caption from Polar Discovery: A dish of polychaete worms and one mollusk (the light pink loop in the center) awaits further sorting. Back in Fairbanks, the animals will be analyzed to see where their food comes from. Phytoplankton and ice algae have different ratios of carbon and nitrogen isotopes-natural variants of those common elements. The ratios stay the same in the animals that eat them. Iken and her colleagues can use that information to figure out whether the critters living in the mud are getting more food that drifts down from the ice or the water.
Image of The Day caption:
The Bering Sea is a cold place, but it's home to animals from walruses to worms. A dish of polychaete worms and one mollusk (the light pink loop in the center) await further sorting during an April 2009 expedition to the Bering Sea. A team of researchers led by WHOI biologist Carin Ashjian were there to learn more about sea ice and how climate change could be affecting the Bering Sea ecosystem. As the climate changes, shifts in sea ice should also affect the ice algae. The clams, snails, worms, and crustaceans on the bottom of the sea, in turn, are food for larger animals. If these mud-dwelling creatures get a lot of their energy from the sea ice, a change in ice cover in the Bering Sea could ripple through the ecosystem.
Photo by Chris Linder
© Woods Hole Oceanographic Institution
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