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Latest Trees of Canada Stories

2012-03-29 21:27:55

A healthy century old American elm on the campus of the University of Guelph could hold the key to reviving the species that has been decimated by Dutch elm disease (DED). This tree is an example of a small population of mature trees that have resisted the ravages of DED. A study published in the Canadian Journal of Forest Research (CJFR) examines using shoot buds from the tree to develop an in vitro conservation system for American elm trees. "Elm trees naturally live to be several...

2011-12-15 17:02:05

The number of sugar maples in Upper Great Lakes forests is likely to decline in coming decades, according to University of Michigan ecologists and their colleagues, due to a previously unrecognized threat from a familiar enemy: acid rain. Over the past four decades, sugar maple abundance has declined in some regions of the northeastern United States and southeastern Canada, due largely to acidification of calcium-poor granitic soils in response to acid rain. Sugar maple forests in the...

New Effect Of Acid Rain On Forests
2011-12-09 03:49:42

Too Many Dead Leaves a Bad Sign for Sugar Maples Scientists have discovered that nitrogen that falls from the atmosphere in acid rain can influence large tracts of sugar maples in North America. The atmospheric nitrogen in acid rain can affect forest ecosystems by acidifying soils and causing nutrient imbalances. Sugar maples in northeastern North America are especially vulnerable. Vast maple areas have been affected by this acidification process, which depletes soil calcium in...

2011-08-12 09:30:00

HARRISBURG, Pa., Aug. 12, 2011 /PRNewswire-USNewswire/ -- Thousand Cankers Disease has been detected for the first time in Pennsylvania, and a quarantine restricting the movement of wood from Bucks County and other states known to have the disease is effective immediately. The disease is caused when Walnut Twig Beetles, which carry a fungus, tunnel beneath the bark of walnut trees, causing small cankers to form. As more beetles attack the tree, the number of cankers increases, slowly...

8d03dedd4ed8a45f43c966602aac607d
2011-05-11 08:32:45

Since the 1950s, sustainability in northern hardwood forests was achieved by chopping down trees in small clumps to naturally make room for new ones to spring up. Early experiments with single-tree and group selection logging found that desirable species like sugar maples did a great job of regenerating in the sunny, rain-drenched harvest gaps "“ theoretically eliminating the need to replant. But something has changed. In a sweeping study of a huge swath of Michigan's Upper Peninsula,...

7d576f48b5f7fc80f321c8917711653a
2010-12-06 10:55:00

Researchers at Universit© Laval, in collaboration with Nova Scotia Agricultural College, have discovered what causes Christmas tree needles to drop off, and how to double the lifespan of Christmas trees in homes. The authors presented their findings in a recent issue of the scientific journal Trees. The researchers have identified a plant hormone"”ethylene"”responsible for needle loss in balsam fir. They made the discovery by placing fir branches in containers of water inside...

ec5e068377cfe13dc8488f6788f94d52
2010-04-05 14:52:44

The Swiss needle cast epidemic in Douglas-fir forests of the coastal Pacific Northwest is continuing to intensify, appears to be unprecedented over at least the past 100 years, and is probably linked to the extensive planting of Douglas-fir along the coast and a warmer climate, new research concludes. Scientists in the College of Forestry at Oregon State University have also found that this disease, which is affecting hundreds of thousands of acres in Oregon and Washington and costing tens of...

69c7ca809d77cce641aba16f1e8d6d751
2009-09-11 09:24:30

Mark Widrlechner may someday be known as the modern-day Johnny Appleseed for ash trees. As the devastating insect emerald ash borer is working its way across North America destroying almost all the native ash trees it encounters, Widrlechner is rapidly collecting and storing ash tree seeds. Like the legendary Appleseed who planted apple trees across the country, Widrlechner's seed stocks can serve as a national source for reintroducing ash trees once the devastation can be controlled....

2008-09-18 18:00:29

Officials at Canaan Valley National Wildlife Refuge are looking for a few good men and women to volunteer as tree planters Saturday and Sunday as part of a red spruce reforestation project for the refuge. Volunteers are asked to meet at the refuge's visitor center on W.Va. 32 at 9 a.m. each morning. Refuge personnel will discuss the historic role of the red spruce forest in Canaan Valley before car-pooling to the plating site. Volunteers should bring lunches and water. The planting is...

2008-07-22 00:00:25

By > JOSH SISKIN I would like some advice on what kind of tree I should plant in my front yard for shade. I live in Mira Loma (Riverside County), where it is very hot in the summer and cold and windy in the winter months. I would like something fast-growing and preferably evergreen that would not hurt my plumbing. One last thing: My yard is small, so the tree should not be too large. >Rachelle Romero, Mira Loma Most evergreen trees are not known for producing shade. Exceptions...


Latest Trees of Canada Reference Libraries

31_333f4ba6ce441299fd45fac924790ec1
2007-12-27 09:32:46

The American Beech (Fagus grandifolia), is a species of beech native to eastern North America. It can be found from Nova Scotia west to southern Ontario in Canada, and Wisconsin south to eastern Texas and east to northern Florida in the United States. Trees in the southern half of its range are sometimes distinguished as a separate species. A related beech native to the mountains of central Mexico is sometimes treated as a subspecies of the American Beech, but is actually a separate species,...

0_e3298ca02c15c613d4740c49ab0c6c75
2007-12-27 09:13:38

The Balsam Fir (Abies balsamea), is a North American fir, native to most of eastern and central Canada and the northeastern United States. In Canada it is found from Newfoundland to central Alberta. In the United States the Balsam Fir is found from Minnesota to Maine, and south in the Appalachian Mountains to West Virginia. It is a small to medium-size evergreen tree from 45 to 65 feet tall, with a narrow conic crown. Few balsams may grow to over 85 feet tall. The bark on young trees is...

35_876a98e81e2bc4d308fd55de0202b764
2005-06-14 10:31:10

Yellow Birch (Betula alleghaniensis, synomym B. lutea), is a species of birch native to eastern North America, from Nova Scotia, New Brunswick, and southern Quebec west to Minnesota, and south in the Appalachian Mountains to northern Georgia. It is the Provincial tree of Quebec and the name reflects the color of the tree's bark. This medium-sized deciduous tree reaches 20 m tall (exceptionally to 30 m) with a trunk up to 80 cm diameter. The bark is smooth, yellow-bronze, flaking in fine...

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Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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