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Tuesday, 13 November 2012

Ash Dieback Highlights Need to protect UK’s Trees and Woodlands

Common Ash (Fraxinus excelsior)
Female flowers and leaf bud in April.
With concerns over the arrival and spread of ash dieback in the UK growing, conservation charity Trees for Life said today that the disease highlights the urgent need to place higher priority on the conservation of the country’s native trees and woodlands, and warned that other tree diseases and pests must be taken equally seriously.

The tragedy threatening the UK’s ash trees is a powerful warning that our native trees need help, and underlines the crucial importance of conservation work. Stronger action to protect our trees, including by preventing diseases and pests from entering the UK, is urgently needed,” said Alan Watson
Featherstone, executive director of Trees for Life.

Ash dieback is far from being the only disease posing a risk to our native trees. Dothistroma Needle Blight, for example, is emerging as a potential threat to the Scots pine – a keystone species of the Caledonian Forest, on which many other species depend – and we have stepped up bio-security measures at our nursery to defend against it.”

Dothistroma Needle Blight, also known as Red Band Needle Blight, has affected Lodgepole and Corsican Pine in Scotland. The Scots pine – the Caledonian Forest’s largest and longest-living tree, which forms a natural habitat for many species including the red squirrel, capercaillie and pine marten – was believed to have low susceptibility to the disease. However, the Forestry Commission has noted an increase in the distribution and severity of the disease on Scots pine, particularly in Scotland, although it isn’t yet known whether this will lead to tree mortality or extend significantly into the Caledonian pinewoods.

With increased global trade and tree imports representing a major risk to the UK’s native trees, Trees for Life joined calls for the UK government to hold an emergency summit, bringing together forestry, plant health and conservation groups to address the threats to native trees and woods. It said that the Government should also place higher priority on conservation work.

Since 1989, Trees for Life has created almost 10,000 acres of new Caledonian Forest at 45 different locations in the Highlands. It has planted more than one million trees, with a million more pledged for the next five years. Amongst these emerging forests, a complex web of life is already renewing itself. Habitat restoration is making a notable impact for the wildlife of the Caledonian Forest, which includes the strawberry spider, wood ants, red squirrels, rare sawflies, ospreys and capercaillies.

The charity’s current Million More Trees campaign is a response to environmental problems including deforestation, climate change and biodiversity loss.

For more details, see or call 0845 458 3505.

The UK’s 80 million ash trees are under threat from Chalara ash dieback. Last week, survey results confirmed that the fungal disease is present at 115 sites in Scotland, England and Wales, while Forestry Commission Scotland reported that suspected and confirmed cases of ash dieback have been found following a rapid survey of Scotland’s woodlands. The disease is believed to have arrived from continental Europe on the wind and via imports. There is no known cure for the disease, although some trees have shown resistance.

A ban on ash imports and the movement of trees from areas with confirmed cases of the disease came into force on 29 October 2012, a few days after scientists confirmed that the disease had reached the UK’s natural environment, at sites in East Anglia. On 9 November, the Government published an action plan to tackle ash dieback.

Chalara dieback is caused by the Chalara fraxinea fungus. Chalara has affected a high proportion of ash trees in northern Europe, and was first confirmed as present in the UK in nursery stock in March. There is no risk to human or animal health from the disease. Data gathered in Denmark, where up to 90 per cent of ash trees have been affected in some areas, suggests that ash dieback can spread about 20 km (12 miles) every year.
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This web site is about the wildlife, particularly the mammals, of the Glen Affric National Nature Reserve area in the north west Highlands of Scotland, UK; and the equipment I use to search for them, which is chiefly trail cameras.

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