The race is on to buy up inexpensive land along coastlines for vacation homes and tourist hotels. But increased development can mean more nutrient rich runoff that threatens the very coral reefs attracting tourists in the first place. David Kline at the Smithsonian Tropical Research Institute and colleagues find that bacteria on coral reefs grow out of control as the level of simple sugars in seawater increases.
"I set up a seawater system at the Smithsonian station in Bocas del Toro, Panama so that I could test individual components of runoff on live corals. I was very surprised to find that, rather than the usual suspects measured to determine water quality: nitrogen and phosphates, it was simple carbon compounds--too much sugar--that often kills corals indirectly by stimulating bacterial growth."
"Sugars in runoff cause bacteria normally associated with corals to grow out of control. People dont usually even measure carbon when they do water quality studies. They only look at the nutrients found in fertilizers. Nitrogen and phosphates cause algal overgrowth on corals, which also contributes sugars to the system. It is vital to consider the carbon component as we develop conservation strategies for coral reefs."
Beth King | EurekAlert!
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Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....
A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...
Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision
Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...
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