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
Despite government claims, orangutan populations have not increased. Call for better monitoring
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Increasing frequency of ocean storms could alter kelp forest ecosystems
30.10.2018 | University of Virginia
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
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Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
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16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences