ScienceDaily: Nature News |
- Many North American birds may lose part of range under climate change scenarios
- Seeing the forest and the trees, all three trillion of them
- Change in environment can lead to rapid evolution
- Evidence that Earth's first mass extinction was caused by critters not catastrophe
- Insights into the mechanisms of fine-tuning wheat for diverse environments
- Biodiversity belowground is just as important as aboveground
| Many North American birds may lose part of range under climate change scenarios Posted: 02 Sep 2015 12:55 PM PDT Over 50 percent of nearly 600 surveyed bird species may lose more than half of their current geographic range across three climate change scenarios through the end of the century in North America.  |
| Seeing the forest and the trees, all three trillion of them Posted: 02 Sep 2015 10:49 AM PDT A new international study estimates that there are more than 3 trillion trees on Earth, about seven and a half times more than some previous estimates. But the total number of trees has plummeted by roughly 46 percent since the start of human civilization. The results provide the most comprehensive assessment of tree populations ever produced and offer new insights into a class of organism that helps shape most terrestrial biomes.  |
| Change in environment can lead to rapid evolution Posted: 02 Sep 2015 10:49 AM PDT A new study is showing that rapid evolution can occur in response to environmental changes.  |
| Evidence that Earth's first mass extinction was caused by critters not catastrophe Posted: 02 Sep 2015 09:34 AM PDT The Earth's first mass extinction event 540 million years ago was caused not by a meteorite impact or volcanic super-eruption but by the rise of early animals that dramatically changed the prehistoric environment.  |
| Insights into the mechanisms of fine-tuning wheat for diverse environments Posted: 02 Sep 2015 08:18 AM PDT A researcher has helped identify the last major vernalization gene in wheat. Vernalization genes define when the plant begins to flower and is critical for adaptation to different environments. The finding will help wheat breeders design wheat varieties that can adapt and thrive in changing environments around the world.  |
| Biodiversity belowground is just as important as aboveground Posted: 02 Sep 2015 05:29 AM PDT Although most of the world's biodiversity is below ground, surprisingly little is known about how it affects ecosystems or how it will be affected by climate change. A new study demonstrates that soil bacteria and the richness of animal species belowground play a key role in regulating a whole suite of ecosystem functions on Earth. The authors call for far more attention to this overlooked world of worms, bugs and bacteria in the soil.  |
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