This conference was organised by the United States Department of Agriculture (USDA) Agricultural Research Service, the USDA Forest Service, Western Forestry and Conservation Association, Morton Arboretum, Chicago Botanic Garden, the American Public Gardens Association and BGCI. The purpose of the workshop was to bring together foresters and botanic garden professionals to discuss common interests in tree species conservation, and to explore the opportunities for working together applying interdisciplinary data, knowledge and skills.
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They don’t snore, but might creak during their slumbers. For the first time, trees have been shown to undergo physical changes at night that can be likened to sleep, or at least to day-night cycles that have been observed experimentally in smaller plants.
Branches of birch trees have now been seen drooping by as much as 10 centimetres at the tips towards the end of the night.
By Christina Procopiou
In the 20th century, chestnut blight and Dutch elm disease decimated billions of U.S. trees growing in forests and lining urban and suburban streets. The tree diseases, caused by invasive pests—a wind borne fungus spore from Japan and a beetle from the Netherlands, respectively—changed the face of one American city landscape after another and cost local governments and homeowners a fortune.
Trees could be protected from the devastating ash dieback disease with the help of a natural soil treatment, researchers have claimed.
A newly developed “enriched biochar”, which combines a purified form of charcoal with fungi, seaweed and worm casts could help ash trees resist the Chalara disease, according to research by tree and shrub care company Bartlett Tree Experts.
The Western Larch can live for hundreds of years and grow to over 200 feet, but the oldest Larch trees in northern British Columbia’s Bulkley Valley are only about four feet tall. In fact, the nearest full grown Western Larch is nearly 900 kilometers south by the US border, which has been the Larch’s natural range for thousands of years. These are the first trees of their kind to be planted so far north.
Larch Valley, British Columbia, Photo by Andy Simonds
By Jessica Aldred
Conservation groups want a new national charter to save trees and woods from the ‘unprecedented threat’ of development, disease and climate change. A coalition of UK conservation groups is calling for a new national charter for trees, woods and people.
by Kurt Gruber
It takes a whole day to travel from Ecuador’s capital, Quito, to the heart of the Unesco Sumaco Biosphere Reserve, some 100km to the southeast. The journey entails three hours by car to the edge of the forest, and then anywhere from seven to 15 hours by boat, mule and foot, mostly uphill and on a muddy road, to reach the interior. But the effort is worth it, considering you wind up in the middle of a pristine forest that houses a rather unusual find: walking palm trees.
by Gerry Donnelly
Friday is Arbor Day in Illinois, a day to plant and celebrate trees. The world needs more trees, and we also need to appreciate and care for the trees already rooted in our communities. Trees need champions.
We love trees for their beauty – from long-awaited spring blooms to spectacular fall color and snow-dusted winter branches – and welcome the shade they provide on hot summer days. Yet, people often take trees for granted, overlooking all they do to improve quality of life and the environment.
Scientists have discovered a way to make trees grow bigger and faster which, in the face of climate change, could help increase the supply of renewable resources, according to new research.
by FIONA MACDONALD
New research has shown for the first time that trees don’t just move water up and down like we previously thought - they can also move it across into their ‘food tubes’ to store it for a not-so-rainy day.
Scientists from the Hawkesbury Institute for the Environment at the University of Western Sydney in Australia have used fluorescent dyes to map the flow of water through trees, and found that the direction of movement isn’t just vertical, its also horizontal.