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British flora and fauna under threat, warns National Trust


Grey Partridge by Geoff White

Unpredictable weather brought a host of migrant species to the UK in 2019 – but the input is putting pressure on homegrown flora and fauna.

Many unusual birds and butterflies flew into Britain – whipped along by high winds or hot spells.


The conditions helped grey seals, dragonflies and wildflowers, reports the National Trust’s annual audit of the UK’s wildlife.

But the same conditions made it tough for water voles, terns, toads and puffins.

Ben McCarthy at the National Trust warned that the changing weather could see some species becoming extinct.

He called for action to be taken.

He said: “Sightings of migrant insects and birds are becoming more common.

“This is a result of our changing climate.

“Although this can seem exciting, the obvious flipside is how these changes will start to affect some of our native species already under pressure from intensive land use, habitat fragmentation and climate change.

“More mobile species might be able to escape unfavourable conditions, but they’d have to find similar conditions elsewhere.

“The biggest threat is to less mobile species and those that are specialists.”

Early warm Spring weather led to a flood of migrant butterflies, moths and dragonflies from the south and east.

Significant numbers of Painted Lady butterflies were spotted arriving in huge numbers for the first time in a decade.

Numbers of the Clifden nonpareil moth, which has a rare blue underwing, were at their highest for at least 25 years.

And June, July and October brought in spectacular dragonflies, including the red-veined darter and vagrant emperor.

Grey seals around our shores thrived, with numbers up despite a high 50% mortality rate of seal pups.

Certain wildflowers, especially orchids, did well, possibly due to last year’s drought.

There were record numbers of bee orchids, dark red helleborine and autumn lady’s tresses at some sites.

However, the picture was grim for other species.

Intense fires on Marsden Moor in West Yorkshire damaged 700 acres of precious habitat for mountain hares and ground-nesting birds.

The Grey Partridge – once numerous – is now on the RSPB’s “red list” of endangered birds.

The constant blaze undid years of restoration work.

Dry pools and waterholes deprived natterjack toads of breeding grounds.

The heavy rain affected young water vole who can’t swim.

The “biblical” rain also hit puffins, guillemots and shags.

Mr McCarthy said:

“If our wildlife doesn’t have anywhere to move to as temperatures rise and the weather changes, over the coming years we will inevitably see more and more species at risk of becoming extinct.”

Keith Jones, a climate change expert at the National Trust said:

“This year’s changeable weather is a symptom of the warming climate.

“The more our temperatures go up – the more erratic our weather will become.

“This will force changes to the life cycles of many species as food webs are knocked out of sync.”



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