https://padlet.com/125948/ngtuusbovp8b Made with love en-us 2018-01-19 00:51:19 UTC 2018-01-19 01:19:01 UTC hello@padlet.com 125948 https://padlet.com/125948/ngtuusbovp8b/wish/222660139  Today, a new study reveals that our maple trees will have a hard time surviving the climate changes. Human pollution like cars, factories, and agriculture have a big affect on them too. People have found ways that they could boost our trees but figured it wouldn't be enough. 
Researchers report that a lack of water will stunt the trees' growth. They found ways that water will fail to reach the maple trees. Researchers also say they will survive for now but if these harsh conditions continue, there will be no more in the future.]]> 2018-01-19 00:56:24 UTC https://padlet.com/125948/ngtuusbovp8b/wish/222660139 125948 https://padlet.com/125948/ngtuusbovp8b/wish/222660709 Savor that sticky, slightly nutty sweetness drenching your Sunday morning pancakes now. The trees that make maple syrup will struggle to survive climate change, a new study reveals. Researchers had thought that pollution from cars, factories, and agriculture might buffer sugar maples against an increasingly warm and dry climate by supplying soils with fertilizing nitrogen. But the new analysis, which examined 20 years of tree and soil data in four Michigan locations, finds that extra boost of nitrogen won’t be enough. Instead, the researchers report today in Ecology, a lack of water will stunt the trees’ growth. They ran two climate change scenarios specific to the region. In one case, driven by a decrease in carbon dioxide emissions, temperature would change moderately, by less than 1°C over the next century. In the second, more extreme case based on current emission trends continuing into the future, temperature would rise by more than 5°C, and 40% less rain would fall in the summer. In both scenarios, the trees didn’t grow as much as they do now, but tree growth in the second scenario nearly stopped, even with a bump from extra nitrogen. The researchers say sugar maples will eventually disappear if conditions from the second case hold true. ]]> 2018-01-19 01:03:44 UTC https://padlet.com/125948/ngtuusbovp8b/wish/222660709 125948 https://padlet.com/125948/ngtuusbovp8b/wish/222660852      Sea turtles' sex is usually determined by the temperature of it's incubating nest. Because warmer temperatures produce females, a rise in temperature worries scientists of extinction. New research says that the male sea turtles' death could be over exaggerated. Biologists have found that out of every nest they've studied, they never found a males DNA in more than one nest.
Researchers have estimated that for every one female, they have mated with at least three males. This shows that the population is surviving a lot better on their own than they thought.]]> 2018-01-19 01:05:32 UTC https://padlet.com/125948/ngtuusbovp8b/wish/222660852 125948 https://padlet.com/125948/ngtuusbovp8b/wish/222661845 Sea turtles, like other reptiles, don’t have sex chromosomes; instead, their sex is determined by the temperature of the nest as it incubates. Because warmer temperatures produce females, scientists have been warning that the species could face extinction, as higher global temperatures mean fewer males. But a new study suggests that reports of the male sea turtle’s death could be greatly exaggerated. Since 2013, biologists have collected blood samples from hundreds of turtle hatchlings (Caretta caretta) on Sanibel Island in Florida, and identified the paternity of each. As they looked at hundreds of nests year after year, they found something surprising: DNA from male turtles never appeared in the nests of more than one female. Females can mate multiple times before the nesting season, then store sperm and lay eggs in several nests, each with a different repertoire of fathers. After calculating the number of breeding males from the DNA tests, the researchers determined that for every sea turtle mother, there are nearly three fathers, they reported here last week at the Society for Integrative and Comparative Biology’s annual meeting. That means this population has far more breeding males than anyone realized. To find out why—one theory is that more males survive to adulthood—the researchers plan to conduct paternity testing on more Florida beaches, with two of the six other sea turtle species.]]> 2018-01-19 01:14:50 UTC https://padlet.com/125948/ngtuusbovp8b/wish/222661845 125948 https://padlet.com/125948/ngtuusbovp8b/wish/222661936 2 Topics and my summaries]]> 2018-01-19 01:15:31 UTC https://padlet.com/125948/ngtuusbovp8b/wish/222661936