Adding to growing evidence that pesticide use may be contributing to the decline of many bumblebee species across North America, a new study reveals that daily consumption of even small doses of a widely used class of insecticides known as neonicotinoids reduces the survival of queen and male bees, which are critical to the survival of wild populations. The study also found that exposure to the chemicals alters the expression of genes regulating biological functions such as locomotion, reproduction, immunity, and learning and memory, suggesting that neonicotinoids may be having a greater negative impact on the viability of wild bumblebee populations than previously thought.
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In the Mediterranean region, there are numerous UNESCO World Heritage Sites in low-lying coastal areas. These include, for example, the Venetian Lagoon, the Old City of Dubrovnik and the ruins of Carthage. In the course of the 21st century, these sites will increasingly be at risk by storm surges and increasing coastal erosion due to sea-level rise. This is the conclusion of one of the first large-scale studies, carried out by doctoral researcher Lena Reimann from the Department of Geography at Kiel University (CAU), together with Professor Athanasios Vafeidis and international partners. The team published their results in the current issue (Tuesday 16 October) of the renowned journal Nature Communications.
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With scarce nutrients and weak gravity, growing potatoes on the Moon or on other planets seems unimaginable. But the plant hormone strigolactone could make it possible, plant biologists from the University of Zurich have shown. The hormone supports the symbiosis between fungi and plant roots, thus encouraging plants’ growth – even under the challenging conditions found in space.
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As winter in New England seems to get warmer, fall lingers longer and spring comes into bloom earlier, areas like northern New Hampshire and western Maine are seeing an unusual continued increase in winter ticks which are endangering the moose population. Researchers at the University of New Hampshire have found that the swell of infestations of this parasite, which attaches itself to moose during the fall and feeds throughout the winter, is the primary cause of an unprecedented 70 percent death rate of calves over a three-year period.
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Seafaring vessels and offshore platforms endure a constant battery of waves and currents. Over decades of operation, these structures can, without warning, meet head-on with a rogue wave, freak storm, or some other extreme event, with potentially damaging consequences.
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