An international team of scientists from Israel, the United States and Germany, led by Prof. Amatzia Genin of the Hebrew University of Jerusalem and the Interuniversity Institute for Marine Sciences in Eilat, has provided, for the first time, evidence of the remarkable dynamics responsible for the formation of large aggregations of microscopic animals in the ocean.
From the surface, the ocean appears to be vast and uniform. But beneath the surface, countless number of tiny, nearly transparent animals, called zooplankton, are swept into clusters and patches by ocean currents. The very survival of many zooplankton predators—from invertebrates to whales—and the success of fishermen catches can depend on their success at finding those patches. The new findings indicate that zooplankton are passively drifting with the current, as their name implies (“planktos” = “drifting” in Greek), but only in the horizontal direction, not in the vertical. Indeed, in the vertical, these creatures show a great ability to go “against the flow.”
Although scientists and fishermen have known for a long time that zooplankton spend their life suspended in a constantly flowing environment, an understanding of their responses to ocean currents has remained elusive, mainly due to technological limitations in tracking the motion of the minuscule animals.
Jerry Barach | Hebrew University
Preservation of floodplains is flood protection
27.09.2017 | Technische Universität München
Conservationists are sounding the alarm: parrots much more threatened than assumed
15.09.2017 | Justus-Liebig-Universität Gießen
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research