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Fish evolve by playing it safe

Thu, 23 Mar 2017 09:09:00 EST

New research supports the creation of more marine reserves in the world’s oceans because, the authors say, fish can evolve to be more cautious and stay away from fishing nets.(image)



Salmon with side effects

Wed, 22 Mar 2017 16:53:00 EST

Tasty, versatile, and rich in essential omega-3 fatty acids: salmon is one of the most popular edible fish of all. Shops sell fish caught in the wild, but their main produce is salmon from breeding farms which can pollute rivers, lakes and oceans. Just how big is the problem? German and Chilean scientists are working to answer this question under the leadership of the Helmholtz Centre for Environmental Research (UFZ). They examined the dissolved organic compounds which enter Chile's rivers from salmon farms, and have published a report in the journal Scientific Reports, warning that these substances are placing huge strain on ecosystems and are changing entire biological communities.(image)



Under the Dead Sea, Warnings of Dire Drought

Wed, 22 Mar 2017 16:39:00 EST

Nearly 1,000 feet below the bed of the Dead Sea, scientists have found evidence that during past warm periods, the Mideast has suffered drought on scales never recorded by humans—a possible warning for current times. Thick layers of crystalline salt show that rainfall plummeted to as little as a fifth of modern levels some 120,000 years ago, and again about 10,000 years ago. Today, the region is drying again as climate warms, and scientists say it will get worse. The new findings may cause them to rethink how much worse, in this already thirsty and volatile part of the world.(image)



Researchers collaborate on climate change as cause of wetland die-off

Wed, 22 Mar 2017 08:43:00 EST

Researchers from Nipissing University’s Geography department are part of a study published in the journal Marine and Freshwater Research that points a finger at climate change as the cause of a massive wetland die-off in Australia.(image)



The foundation of aquatic life can rapidly adapt to global warming, new research suggests

Tue, 21 Mar 2017 16:11:00 EST

Important microscopic creatures which produce half of the oxygen in the atmosphere can rapidly adapt to global warming, new research suggests.Phytoplankton, which also act as an essential food supply for fish, can increase the rate at which they take in carbon dioxide and release oxygen while in warmer water temperatures, a long-running experiment shows.Monitoring of one species, a green algae, Chlamydomonas reinhardtii, after ten years of them being in waters of a higher temperature shows they quickly adapt so they are still able to photosynthesise more than they respire.(image)



2017 U.S. Wildfire Season Off to an Intense Start

Tue, 21 Mar 2017 15:59:00 EST

Wildfires have consumed more than 2 million acres of U.S. land so far this year, nearly 10 times the long-term average and a punishing start to this year’s wildfire season, according to data from the National Interagency Fire Center (NIFC).(image)



Boulder scientist teams on study probing implications of ice sheet's demise

Tue, 21 Mar 2017 13:25:00 EST

Flying over the remote during research at the Barnes Ice Cap on Baffin Island in 2009, a Boulder scientist saw dark where there should have been white.Closer inspection revealed that what Gifford Miller spotted was the remnants of a 1963 geological camp that had been buried for decades by snow and ice. Long-abandoned tents and snowmobiles were being unveiled by melting of the ice cap, and that helped inspire a study that suggests a disturbing climate change signal.(image)