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.
Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide
Malaysia's unique freshwater mussels in danger
27.09.2016 | The University of Nottingham Malaysia Campus
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
27.10.2016 | Materials Sciences
27.10.2016 | Physics and Astronomy
27.10.2016 | Life Sciences