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Conservation / Tree Health
By Alice Shen
Research shows greater diversity leads to more greenhouse gas absorption
Forests with a diverse mix of trees can absorb more than twice as much carbon as areas with just a single species, research carried out in eastern China has found – a discovery that could help in the fight against climate change.
By James Tyrrell
Hygroscopic aerosols — particles in the air that attract water — could be causing forest decline around the world, according to experiments performed in Germany. Researchers believe that aerosol accumulation on trees enables thin bridges of liquid to form between the leaf interior and the leaf surface, causing the plants to dry out much more rapidly.
Something is killing bigleaf maples — Washington's biggest broadleaf tree — and scientists can't stop it. They don't even know what's causing it.
"We've looked for everything we can possibly think of and what people smarter than us can think of," said Amy Ramsey, a forest pathologist with the state Department of Natural Resources.
Novel approach aims to increase genetic diversity, efficiency in protecting threatened tree species, benefiting foresters, natural resource organizations, and ultimately the public.
Globally, forest trees are increasingly at risk from habitat destruction, pests and disease, and a changing climate. But the guidelines for effective preservation of a tree species' genetic diversity and adaptive potential have been limited to simple mathematical equations for crop collections from the 1970s, or best guesses based on intuitions.
When your goal is something as important as restoring the American chestnut to the eastern United States, you can’t go it alone. The American Chestnut Foundation (TACF) knew this, which is why they have a network of amazing chapters, volunteers, scientists, and also, partner organizations. Through the ArbNet community of arboreta we can work collaboratively as part of a broad network with the common goal of encouraging the planting and conservation of trees.
By Gwilym Lewis
Kew scientists, in collaboration with researchers from Brazil and Canada, have recently published a description of a new tree species from the legume family (Leguminosae or Fabaceae). Dinizia jueirana-facao G.P. Lewis & G.S. Siqueira, discovered in Brazil, grows to a whopping 40 metres with an estimated weight of up to 62 tonnes.
By Lydia Taylor
Researchers say they are stumped by a disease that’s infecting beech trees in Northeast Ohio.
Beech leaf disease can be identified by curling leaves with dark stripes. The leaves fall earlier than normal and prevents the tree from blooming the next season.
Mike Watson, conservation biologist at Holden Arboretum, says the cause of the disease and how it spreads is unknown.