Love them or hate them, pocket gophers have an important effect on the soil and plants where they live. They serve as small "ecosystem engineers" generating major impacts on the physical environment.
Jim Reichman, director of the National Center for Ecological Analysis and Synthesis (NCEAS) at UC Santa Barbara, will present findings on North American pocket gophers, entitled "Bioturbation by subterranean mammalian herbivores and its impact on ecosystems," at the annual meeting of the Ecology Society of America in Portland, Ore., the first week in August. Eric Seabloom of NCEAS is a co-author.
Pocket gophers are named for their fur-lined pouches located on the outside of their mouths. They use the pouches to carry food, hence the name. The rodents vary in length from six to 13 inches. As with most burrowing mammals, pocket gophers have poor eyesight. However, they compensate for this with other, well-developed senses, such as large whiskers, which are sensitive to movement and help them in dark tunnels. They have powerful claws and teeth for digging. They are vegetarian, or herbivores, surviving mostly on roots.
Gail Gallessich | EurekAlert!
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DESY and MPSD scientists create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.
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The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.
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Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...
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