The circular plots consist of aspen and birch trees, surrounded by PVC pipes that allowed scientists to vent carbon dioxide and ozone gas into the air around the trees, to study what effect high ...

You can grow and care for aspen trees easily — they are hardy to USDA Zones 1 through 6, love full sun, and grow their best ...

The tree was once common but deforestation and overgrazing has caused it to largely disappear .

Habitat loss and fragmentation are the main culprits behind the decline. Intact shrub-steppe landscapes are key. Changes to ...

the branches of the birch have been spread out and the wind has been rustling them. The poplar, on the other hand, has been standing straight, reaching toward the clouds. Next up, we have another tree ...

In all, there are 700 plants. There are aspen and birch trees, and a medley of berries – snow, elder, buffalo. They’ve been growing here for a little more than five months, the result of a ...

where they feed on the leaves of trees like aspen and birch. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing ...

I have lived here since 2008, and I have never seen so much red in our aspen and birch leaves ... and I study tree physiology. In the fall, I keep an eye on when the leaves change colors as ...

Aspens are one of Scotland's rarest and most important trees An initiative to save one of Scotland's most endangered species of tree has been launched in the Cairngorms National Park. Aspen ...

An initiative to save one of Scotland's most endangered species of tree has been launched in the Cairngorms National Park. Aspen provides a vital habitat for rare wildlife, plants and fungi and is ...