One barrier to protecting biodiversity is that there are no good ways of figuring out how many species there are in large areas. Now we may finally be able to find out: a new method accurately predicts the total number of North American butterfly species even when only a tenth of the ecoregions are sampled.
Western admiral, Limenitis weidemeyerii, near Gothic, Colorado (courtesy of Taylor H. Ricketts)
This could "at last enable ecology to estimate worldwide species diversity," say Michael Rosenzweig, Will Turner and Jonathan Cox of the University of Arizona, Tucson, and Taylor Ricketts of Stanford University in Stanford, California, and the World Wildlife Fund in Washington, DC, in the June issue of Conservation Biology.
While conservationists can predict how many species there are within a single habitat, the usefulness of this approach is limited because its impossible to sample all the habitats in large areas. Knowing the number of species is critical to tracking – and addressing -- declines in biodiversity. "Right now we can only guess that the correct answer for the total number of species worldwide lies between 2 and 100 million," says Rosenzweig.
Michael Rosenzweig | EurekAlert!
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Physicists have developed a technique based on optical microscopy that can be used to create images of atoms on the nanoscale. In particular, the new method allows the imaging of quantum dots in a semiconductor chip. Together with colleagues from the University of Bochum, scientists from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute reported the findings in the journal Nature Photonics.
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On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
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