As the advance of global warming becomes more certain, accurate predictions about its impacts are still largely guesswork. How can we know what long-term warming will do to complex ecosystems? One way is to do a large experiment and see what happens. A new study published in the journal Ecology shows that artificially warming the seawater by 3.5oC in a California bay had dramatic effects on 150 species of seaweeds and animals.
David Schiel (University of Canterbury in Christchurch, New Zealand), John Steinbeck (Tenera Environmental, California , USA) and Michael Foster (Moss Landing Marine Labs, California, USA) compiled a 20-year study of coastal sea life along 2 kilometers of a bay affected by hot water from the cooling system of a power generating plant. Many kelp and other large seaweeds virtually disappeared from the bay, grazing snails and sea urchins increased, abalone died and habitats changed throughout the bay.
The study showed that one of the main predictions about the effects of seawater warming on ocean life was wrong: there was no replacement of cold-water species by warm-water species. Instead, a few abundant, widely distributed species were directly affected by the increased temperatures and triggered complex responses throughout the coastal marine communities. “Our study clearly shows that changes in marine systems due to warming are unlikely to be simple. Whether we come up with better ways to predict changes remains to be seen,” said Professor Schiel.
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04.12.2018 | Ohio State University
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Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.
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Scientists from the Theory Department of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science (CFEL) in Hamburg have shown through theoretical calculations and computer simulations that the force between electrons and lattice distortions in an atomically thin two-dimensional superconductor can be controlled with virtual photons. This could aid the development of new superconductors for energy-saving devices and many other technical applications.
The vacuum is not empty. It may sound like magic to laypeople but it has occupied physicists since the birth of quantum mechanics.
10.12.2018 | Event News
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10.12.2018 | Life Sciences
10.12.2018 | Physics and Astronomy
10.12.2018 | Life Sciences