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.
Upcycling 'fast fashion' to reduce waste and pollution
03.04.2017 | American Chemical Society
Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
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