News tagged with trees
An economic analysis of Emerald Ash Borer management options
A new study in the Journal of Economic Entomology examines several options for managing the Emerald Ash Borer, an invasive insect that is destroying US ash trees.
Feb 09, 2012 |
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Trees find the nitrogen they need, even in a super-size CO2 world
In the fast-food world of trees, let’s say carbon dioxide is like French fries, and nitrogen is like catsup. Suppose those trees suddenly had extra servings of French fries, but the catsup ration stayed ...
Feb 09, 2012 |
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Big trees face 'dire future'
Already on the decline worldwide, big trees face a dire future according to James Cook University’s Distinguished Professor William Laurance.
Feb 09, 2012 |
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18 endangered dolphins spotted off Borneo: WWF
Conservation group WWF said it spotted 18 critically endangered Irrawaddy dolphins in Indonesian waters off Borneo island Tuesday and called for greater protection of the species' habitat.
Feb 07, 2012 |
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Australia’s sheep are naturally itching for tea tree’s good oil
Scientists at UQ's Queensland Alliance for Agriculture and Food Innovation (QAAFI) have discovered that one of Australia's best known folk remedies might help to alleviate the sheep industry's biggest headache.
Feb 07, 2012 |
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Tree rings may underestimate climate response to volcanic eruptions: study
Some climate cooling caused by past volcanic eruptions may not be evident in tree-ring reconstructions of temperature change because large enough temperature drops lead to greatly shortened or even absent growing seasons, ...
Space & Earth / Earth Sciences
Feb 05, 2012 |
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Collective action: Occupied genetic switches hold clues to cells' history
If you wanted to draw your family tree, you could start by searching for people who share your surname. Cells, of course, don't have surnames, but scientists at the European Molecular Biology Laboratory (EMBL) ...
Feb 03, 2012 |
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Big trees boost city life
(PhysOrg.com) -- New research from The Australian National University has revealed for the first time the role large trees play in sustaining biodiversity and bird life in urban environments.
Feb 03, 2012 |
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Northern forests may be losing their ability to trap carbon
The northern forests of western Canada are likely absorbing less carbon dioxide because of climate change, and the decline may be making a bad situation worse, researchers from Quebec and China have concluded.
Feb 02, 2012 |
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Finland's UPM to make biodiesel from wood pulp
Finnish papermaker UPM said Wednesday it plans to build the world's first industrial-scale plant to refine a byproduct of wood pulp into biodiesel.
Technology / Energy & Green Tech
Feb 01, 2012 |
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Bacterial plasmids -- the freeloading and the heavy-lifters -- balance the high price of disease
Studying self-replicating genetic units, called plasmids, found in one of the world's widest-ranging pathogenic soil bacteria -- the crown-gall-disease-causing microorganism Agrobacterium tumefaciens -- Ind ...
Feb 01, 2012 |
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Yellow-cedar are dying in Alaska: Scientists now know why
Yellow-cedar, a culturally and economically valuable tree in southeastern Alaska and adjacent parts of British Columbia, has been dying off across large expanses of these areas for the past 100 years. But ...
Feb 01, 2012 |
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Early action tipped to save tonnes of Aussie avocados
Researchers at UQ's Queensland Alliance for Food and Agriculture (QAAFI) have acted swiftly to ensure Australia's next $180 million avocado crop won't be crippled by a fungus.
Feb 01, 2012 |
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Research boosts maple syrup production
(PhysOrg.com) -- The secret to success for maple syrup producers may lie in the science of sanitation.
Feb 01, 2012 |
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Japan studies flora and fauna near Fukushima plant
Japanese scientists are studying how radiation has affected plants and animals living near the crippled Fukushima nuclear plant, according to an official.
Jan 30, 2012 |
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Tree
A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to 6 m; some authors set a minimum of 10 cm trunk diameter (30 cm girth). Woody plants that do not meet these definitions by having multiple stems and/or small size, are called shrubs. Compared with most other plants, trees are long-lived, some reaching several thousand years old and growing to up to 115 m (379 ft) high.
Trees are an important component of the natural landscape because of their prevention of erosion and the provision of a weather-sheltered ecosystem in and under their foliage. Trees also play an important role in producing oxygen and reducing carbon dioxide in the atmosphere, as well as moderating ground temperatures. They are also elements in landscaping and agriculture, both for their aesthetic appeal and their orchard crops (such as apples). Wood from trees is a building material, as well as a primary energy source in many developing countries. Trees also play a role in many of the world's mythologies (see trees in mythology).
For more information about Tree, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
