Sentences with phrase «host trees»

For example, we know that many insect species are only found on one host tree species.

One day he took a break from his duties to check out a report from a warden stationed there at Canada's northernmost national park — in a land that has not hosted trees for thousands of years, the warden had seen some wood protruding from mud near a glacier.

JAMESTOWN - The City of Jamestown Summer Playground Program hosted a Tree Day event Tuesday morning at Allen Park.

In the American west, beetles and their well - adapted host trees are locked in an ever - changing arms race.

The Newfoundland Club of Seattle teamed with the Enchanted Winds Christmas Tree Farm to host a tree pull to benefit the club's rescue program.

Partners in each city host the trees and conduct live public discussions with the artists and invited guests through an extraordinary network of citywide partners:

Drought conditions appear to decrease host tree defenses against spruce beetles, which attack the inner layers of bark, feeding and breeding in the phloem, a soft inner bark tissue, which impedes tree growth and eventually kills vast swaths of forest.

For equivalent food supply and fecundity rates, this variability in generation time will obviously have a very strong effect on the number of adult beetles emerging per unit time to attack new host trees (although the thermal requirements for the full developmental cycle can mitigate this somewhat).

The tree, being a legume like peanuts, is nitrogen - fixing, so it serves as a host tree for other wild plants such as chiltepins.

The larvae feed off the host tree.

By simulating the browsing of a large mammal, they discovered that victorious colonies are less able to defend their host trees after fights.

The acacia ants she studies, Crematogaster mimosae, use their fearsome bite to defend their host trees against large animals such as elephants and giraffes that eat the trees» leaves.

A genome - level understanding of how the fungus Grosmannia clavigera, a symbiont of the mountain pine beetle, withstands its host tree's chemical defenses could help ecological modelers better forecast the range and extent of the epidemic

«While truffles are a very valuable crop, together with their host trees, they are also a beneficial component for conservation and biodiversity.»

Its host tree is a Mediterranean oak that was planted in 2008.

«It's a risky investment for farmers — even though humans have been eating truffles for centuries, we know remarkably little about how they grow and how they interact with their host trees,» said paper co-author Professor Ulf Büntgen of Cambridge's Department of Geography.

The analysis revealed that the seeds of bat - hosting trees were more enriched in 15N than the seeds of trees without bat roosts.

Bark beetles attack trees in order to reproduce, and outbreaks occur primarily in forests in which the beetle's host trees are large and abundant.

While some ants help protect their home trees from hungry beasts, others do nothing of the sort — but they may offer a less obvious benefit to their hosts

Lianas have a competitive advantage compared to trees because they do not invest as much energy in making large stems to support themselves — instead they use the architecture of their host trees.

Rooted in the soil, lianas also compete with their host trees for water, nutrients and other belowground resources.

It's a fig tree from the strangler fig species, which grow upon and «strangle» a host tree with their areal roots that drop to the ground to feed.

The loss would only apply to the host tree: lodgepole pine, not all forests.

Since cork is harvested from the bark of its host tree, the patterns of the grain are very lively and arguably provide some of the most interesting grain patterns in wood.