Making the Nature Conservancy’s list of Last Great Places doesn’t guarantee a safe habitat. The osprey, a fish-feeding bird, nests along the Delaware River and Bay and continues to face contaminated living conditions. Although stable, osprey reproduction is stressed, according to an article published in the latest issue of Environmental Toxicology and Chemistry.
Ospreys and other wildlife share the Delaware River and Bay area with factories, manufacturers and water traffic using the Bay’s ports. The osprey population suffered substantial losses beginning in the 1950s with the widespread use of organochlorine pesticides. Contamination continued into the late 1980s when a study reported eggshell thinning and reproduction impairment mostly caused by p,p?-dichlorodiphenyldichloroethylene (p,p?-DDE). Using the same study sites, 1998 samples showed that contamination dropped off to levels where eggshell thickness was similar to the pre-DDT era.
In this study, researchers conducted the first large-scale ecotoxicological evaluation of ospreys nesting along the Delaware River, Bay and coast. Based on samples taken in 2002, they concluded that contaminant concentrations were predictive of hatching success. These contaminants included DDT, dieldrin, chlordane, polychlorinated biphenyls (PCBs) and dioxins to name a few.
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