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Tag: "seasonal" at biology news

Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals

... birds show normal migratory orientation, with the seasonal shift between southerly directions in autumn and n...by the magnetic field, but they no longer show the seasonal change between spring and autumn and instead head north in both seasons. This behavior did not appea...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

...human activity can increase their vulnerability to seasonal fluctuations and droughts." "Population growth, inappropriate policies, and some aspects of globalization are the main drivers that lead to unsustainable pressure on dryland ecosystems," he says. Adds co-author Uriel Safriel of Hebrew University of...

Scientists to mimic nature for newest cancer drugs

...es inadequate because they don't fully address the seasonal movement of right whales. The scientists recommend the immediate implementation of interim emergency rules to address the current crisis and emphasize the need for renewed support now from the U.S. Congress and research community as well as the fish...

FSU scientist warns North Atlantic right whale facing extinction

...es inadequate because they don't fully address the seasonal movement of right whales. The scientists recommend the immediate implementation of interim emergency rules to address the current crisis and emphasize the need for renewed support now from the U.S. Congress and research community as well as the fish...

Mice brains shrink during winter, impairing some learning and memory

...ronment. This is one of the first studies to show seasonal changes in the structure and the functioning of br...his may one day help researchers gain insight into seasonal brain dysfunctions in humans such as seasonal affective disorder, Nelson said. Nelson conducted the...

Promising new West Nile therapy cures disease in mice

...irus has emerged in the United States as a regular seasonal threat, particularly for people over 50. We currently do not have a proven therapy for people with serious West Nile disease, so we will continue to aggressively pursue all promising leads for an effective treatment," says Anthony S. Fauci, M.D., dir...

New lab technique identifies high levels of pathogens in therapy pool

...gens in such enclosed pool areas are likely due to seasonal ventilation practices, including closed doors and windows during cold periods, said Pace. Since the study, the rate of air exchange in the pool area has been increased and additional air filters have been installed that have been shown to capture and...

Gray wolves maintain the food chain in winter

...th disruptions in range, reproductive success, and seasonal phenomena like migration. But, in a new study from the open-access online journal PLoS Biology (www.plosbiology.org), Christopher Wilmers and Wayne Getz show that the impact of climate change on many different species in Yellowstone Park can be buffe...

Light therapy may combat fungal infections, new evidence suggests

...herapy is now used for medical conditions, such as seasonal affective disorder. The most common method, called bright-light therapy, requires that patients sit near a special light box fitted with high-intensity, full-spectrum or white light bulbs. UV irradiation is also used to repigment skin affected by the...

South America's vast pantanal wetland may become next everglades, UNU experts warn

... Cuiabá River, a project designed also to regulate seasonal flooding. A lower and shorter flood peak in the Cuiabá River, however, could have profound ecological impacts in the northern Pantanal. "Inter-linkages approach" needed to manage the Pantanal The complex interconnections and inter-linkages at the e...

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