ScienceDaily: Nature News |
- Greenland ice sheet's winds driving tundra soil erosion, study finds
- Are marine organisms evolving to protect their young in response to ocean acidification?
- Significant breath from streams, rivers
- Competition from cats drove extinction of many species of ancient dogs
| Greenland ice sheet's winds driving tundra soil erosion, study finds Posted: 12 Aug 2015 10:19 AM PDT Strong winds blowing off the Greenland Ice Sheet are eroding soil and vegetation in the surrounding tundra, making it less productive for caribou and other grazing animals, carbon storage and nutrient cycling, a study finds.  |
| Are marine organisms evolving to protect their young in response to ocean acidification? Posted: 12 Aug 2015 08:05 AM PDT Marine organisms living in acidified waters exhibit a tendency to nurture their offspring to a greater extent than those in more regular conditions. Scientists have found that polychaete worms located around volcanic vents in the Mediterranean grow and develop their eggs within the protection of the family unit -- in contrast to closely-related species that release them into the water column to fend for themselves.  |
| Significant breath from streams, rivers Posted: 12 Aug 2015 07:40 AM PDT Running streams are key sources of the greenhouse gas carbon dioxide, but why is it so? An international team of researchers has now published the answer.  |
| Competition from cats drove extinction of many species of ancient dogs Posted: 12 Aug 2015 07:38 AM PDT Competition played a more important role in the evolution of the dog family (wolves, foxes, and their relatives) than climate change, shows a new international study. Researchers analyzed over 2000 fossils and revealed that the arrival of felids to North America from Asia had a deadly impact on the diversity of the dog family, contributing to the extinction of as many as 40 of their species.  |
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