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Tag: "krill" at biology news

Overfishing may drive endangered seabird to rely upon lower quality food

...vels of carbon isotopes. "It takes about 70 to 80 krill to equal the energy value of one sardine," said Be...ocean years, contemporary murrelets rely more upon krill and mid-level prey, such as sand lance and young rockfish, compared with their historic counterparts...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

...ter seals are specialized for feeding on Antarctic krill and forage along the continental shelf of Antarctica at the edge of the ice pack. Southern elephant seals, in contrast, forage widely in the offshore waters. The SEaOS project led by SMRU's Fedak is deploying electronic tags on elephant seals at th...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...such as shrimp-like species called krill. And each krill has fed on as many as 130,000 diatoms. Therefore, one meal for a humpback may represent more than 400 billion diatoms. (Cerullo, M., 1999, Sea Soup, p. 14). The oldest described species in the register is from 1753, a green alga called Ulva lac...

Parachuting allows krill to eat and run

...ctic researchers have recorded a novel behavior in krill that may help regulate greenhouse gases. Antarctic...urs. In the new work, the researchers found that krill are capable of many migrations each night. What is more, the downward migration may be particularly ...

Vital ocean prey play active role in environment

Although Antarctic krill (Euphausia superba) are one of the best-studied or...eir life cycle have remained murky. Understanding krill is important because they are vital prey for fish, birds, and marine mammals, yet they are vulnerabl...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

...rate south and perhaps diminished the abundance of krill that are at the base of the massive food chain at ...ecrease in sea ice along the coast shows a drop in krill in the marine environment. As a major food source for higher animals, the loss of krill will reduce ...

Antarctic icebergs -- Hotspots of ocean life

...ffect” with significantly increased phytoplankton, krill and seabirds out to a radius of more than two miles around the icebergs. They may also play a surprising role in global climate change. “One important consequence of the increased biological productivity is that free-floating icebergs can serve a...

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