Plant-eating insects inhabit all forest ecosystems, but sometimes their numbers explode, resulting in massive tree defoliation. In the October issue of the Journal of Tropical Ecology researchers from the Smithsonian Tropical Research Institute (STRI) associate a severe moth outbreak with drought conditions following the 1997-1998 El Niño Southern Oscillation (ENSO) event in a dry lowland forest near Panama’s Pacific coast. If ENSO events become more common, repeated herbivore outbreaks might alter forest species composition.
"Although we regularly monitor insect populations from STRI’s Canopy Crane system, we were actually tipped off about the outbreak by the crane operator, who complained that his parked car was covered with insect droppings," explains STRI post-doctoral fellow, Sunshine Van Bael.
Moth larvae devoured 250% more leaf material than usual even as researchers were setting up an experimental protocol to monitor herbivores and leaf damage on twenty tree species reachable from the gondola on the arm of a 42 m tall modified construction crane in Panama City’s Metropolitan Park. The crane, one of two in Panama and nine worldwide, permits scientists to ascend into the treetops to study previously inaccessible aspects of forest dynamics and species diversity.
Beth King | EurekAlert!
Despite government claims, orangutan populations have not increased. Call for better monitoring
06.11.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
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.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
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...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences