Butterfly activity points to climate change

THE impact of climate change in Ireland is being signalled by dramatically unusual behaviour in butterflies, a conference heard yesterday.

Scientists believe the arrival of several new species, and the unseasonal activities of others are directly linked to irregular weather patterns.

The National Biodiversity Centre insist the insects should now be studied as part of a national survey that would indicate future climate change in the country.

“We are entering a phase where the influence of climate change is particularly evident and it is difficult to predict what is likely to happen,” insisted Dr Liam Lysaght, director of the centre.

Delegates at a conference in Waterford organised by Dr Lysaght heard that a new butterfly species, the Small Skipper, was discovered breeding in the country this year.

And the once regular Marsh Fritillary and Large Heath butterflies are under threat due to land use changes such as the draining of wetlands and the demise of peat lands.

Others such as the Holly Blue are increasing in numbers while more common species such as the Small Tortoiseshell and Red Admiral are being seen flying in the depths of winter. A Small Tortoiseshell was seen on New Year’s Day in Macroom, Co Cork.

“A nationwide countryside biodiversity survey is now needed to provide a baseline to track changes to our wildlife and natural resources,” said Dr Lysaght.

“We do not have enough baseline data on our biodiversity and this is urgently required so that we can take corrective action.”

He said the centre, set up by the Heritage Council earlier this year, needs a budget of €500,000 to carry out the survey over the next three years.