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12 December 2013 1:00 pm ,
Vol. 342 ,
Evolutionary biologists have long studied how the Mexican tetra, a drab fish that lives in rivers and creeks but has...
Victorian astronomers spent countless hours laboriously charting the positions of stars in the sky. Such sky mapping,...
In an ambitious project to study 1000 years of sickness and health, researchers are excavating the graveyard of the now...
Stefan Behnisch has won awards for designing science labs and other buildings that are smart, sustainable, and...
The iconic 125-year-old Lick Observatory on Mount Hamilton near San Jose, California, is facing the threat of closure...
Recent results from the Curiosity Mars rover have helped scientists formulate a plan for the next phase of its mission...
A new, remarkably powerful drug that cripples the hepatitis C virus (HCV) came to market last week, but it sells for $...
In pretoothbrush populations, gumlines would often be marred by a thick, visible crust of calcium phosphate, food...
- 12 December 2013 1:00 pm , Vol. 342 , #6164
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ScienceShot: How Jellyfish Poop Fouls Up the Food Chain
6 June 2011 3:00 pm
April showers bring May flowers, but April pollution brings May jellyfish "blooms." The sudden, seasonal appearance of thousands of the creatures occurs in waters warmed by climate change and in areas where overfishing has removed the food competition for invasive jellies. To study how these blooms affect ocean food chains, researchers examined two species of jellyfish that bloom in the Chesapeake Bay every summer. When these jellyfish dine on zooplankton and other carbon-fixing organisms, they convert the food into a gelatinous, carbon-rich excretion. A few, normally rare species of bacteria quickly eat this waste and convert its carbon into CO2, the researchers report online in the Proceedings of the National Academy of Sciences today. This removes the carbon from the waters, preventing fish and other organisms from using it as a food source, ultimately starving out some sea life.
See more ScienceShots.