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Scientists warn on damage to peatlands 

Credit:  By Andrew Bolger, Scotland Correspondent, Financial Times, www.ft.com 3 January 2012 ~~

Scientists have warned that damaged UK peatlands – areas formed over thousands of years from dead and decaying plants in waterlogged conditions – are a significant source of carbon dioxide.

They release the equivalent of almost 3.7m tonnes of CO2 a year – equal to the average emissions of about 660,000 UK households, more than all the households of Edinburgh, Cardiff and Leeds combined.

A report by the International Union for the Conservation of Nature describes peatlands as a “Cinderella” habitat: overlooked and undervalued, covering covers less than 3 per cent of the earth’s land surface but containg twice as much carbon as the world’s forests.

Within the UK, peatlands represent the single most important carbon store, with deep peat bogs containing more than 3.2bn tonnes of carbon: about 20 times that of UK forests. Scotland holds about half the UK’s peatland carbon.

The reports says: “A loss of only 5 per cent of UK peat carbon would equate to the total annual UK human greenhouse gas emissions. It is therefore vital for the UK to avoid the huge losses arising from peatland damage in order to meet its international obligations in tackling global warming.”

The scientists found much of the UK’s peatlands had been damaged, largely because of the way they had been managed, including drainage for agriculture or forestry, track building and peat extraction. Fire, overgrazing, climate change and atmospheric deposits could also worsen the effects of drainage.

The report said damaged peatlands also reduced the quality of drinking water at source, leading to discolouration and associated increased treatment costs for water companies and consumers.

However, healthy peat bogs had a net long-term “cooling” effect on the climate. Peatlands include the largest remaining semi-natural habitats in the UK and host internationally important biodiversity.

Clifton Bain, Director of the IUCN UK peatland programme said: “The good news is that this inquiry has shown that peatland restoration not only benefits wildlife, but has measurable carbon savings, and can quickly reduce the cost of treating drinking water.”

“In identifying a clear strategy for action to bring our peatlands back from the brink, the inquiry points the way forward to avoid the social and environmental costs of further deterioration,” he said.

Jonathan Hughes, director of conservation for the Scottish Wildlife Trust, said: “We’ve always had a strong environmental case for investment in peatlands, but with this landmark publication, we now have a clear and compelling economic case too.”


The main development activity on peatlands is wind farms and the construction of communication masts, according to the IUCN report.

Access tracks and turbine foundations can damage peatland hydrology, causing vegetation to change or allow erosion, with ecological and carbon loss effects often beyond the footprint of the construction area.

Environmentalists are particularly concerned about onshore wind farms being built in the far north of Scotland, where some of the most extensive peatlands are located.

Helen McDade, head of policy for the John Muir Trust, said it opposed the construction of industrial-type developments in such remote areas.

“We should not be doing this in areas of deep peat that are valuable carbon stores,” she said.

The Scottish government said it would allow wind farms to be built only where the impacts had been found to be acceptable – and unsuitable applications were rejected, as has been the case with a number of wind farms. Every application for wind farm development was assessed on its merits.

“We require developers to use a carbon calculator in applying for permission, giving an objective assessment of the carbon savings of wind farms over the years of their operation,” it said. “The potential impact of development on peatland habitats is a material consideration.”

Source:  By Andrew Bolger, Scotland Correspondent, Financial Times, www.ft.com 3 January 2012

This article is the work of the source indicated. Any opinions expressed in it are not necessarily those of National Wind Watch.

The copyright of this article resides with the author or publisher indicated. As part of its noncommercial educational effort to present the environmental, social, scientific, and economic issues of large-scale wind power development to a global audience seeking such information, National Wind Watch endeavors to observe “fair use” as provided for in section 107 of U.S. Copyright Law and similar “fair dealing” provisions of the copyright laws of other nations. Send requests to excerpt, general inquiries, and comments via e-mail.

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