The number of wild bee species in Europe experiencing extinction has increased twofold over the past decade, and the number of endangered butterfly types has close to doubled.
This pressing issue for essential pollinating insects was unveiled by scientific studies for the IUCN red list, which determined that at least over 170 bee varieties out of over 1900 were at risk of extinction in Europe.
The number of butterfly types threatened with extinction in Europe has increased from 37 to 65 since the previous assessment, performed a decade and a half ago. A single species, the Madeiran large white butterfly (Pieris wollastoni) has now been confirmed extinct.
In addition to their visual charm and cultural value, pollinating insects like bees along with butterflies are crucial elements for our physical condition, our food chains and our economic systems – sustaining the produce, vegetables and seeds that sustain us,” said Grethel Aguilar. “The latest European red list evaluations reveal major obstacles, with dangers increasing for butterflies and vital native bee types.”
The reasons of the swift recent drops are the persistent destruction or damage of habitats caused by agricultural intensification and deserted farmland, wetland drainage, excessive grazing by animals, and the utilization of chemical fertilisers and pesticides including neonicotinoid pesticides. The division of environments suitable for pollinators substantially boosts the risk of disappearances in specific areas.
Global heating is also demonstrated to be a major threat: Over half of all endangered butterflies in the European continent are imperilled by the climate emergency – approximately twice as many as a ten years ago.
Up to 90% of plants that flower in Europe require pollination by animals, according to Dr Denis Michez. “Regrettably, native bee colonies are in sharp decrease and cannot be easily replaced by managed colonies,” he said. “If native bees disappear, many non-cultivated plants might be in danger as well – of which bloom-filled grasslands and lovely orchid types are just a handful of illustrations.”
Fifteen types of bumblebee types, which have an essential part in pollinating peas, beans, peanuts and clover, and fourteen varieties of cellophane bee types, famous for fertilizing trees such as willow trees and red maples, are now listed as threatened. Simpanurgus phyllopodus, a mining bee type found only in the continent and the sole species of this genus in Europe, is now evaluated as critically at risk – the research category most akin to dying out in natural habitats.
Butterfly species that are solely present on mountain tops are particularly vulnerable to global heating as they have to climb upward as their environments become warmer but eventually exhaust available space. In southern Spain, the grayling of Nevada and the Andalusian anomalous blue are among more than 40% of European endemics (only found in Europe) facing extinction.
In the Mediterranean region, types such as the severely threatened Karpathos grayling butterfly are imperilled by intense drought and wildfires.
At the same time, in the Arctic Circle, global heating is leading to the forest boundary to advance northwards by many meters each year, with bushes taking over marsh and tundra. Higher temperatures also mean reindeer can not anymore cross the frozen water to browse northern grasslands and prevent them from overgrowing. Eight butterfly species are at risk of extinction in this region, including Freyja’s fritillary butterfly and the ringlet of the Arctic.
“The largest living space for all these pollinating species is grassland rich in flowers and that is declining quickly in Europe because of all these elements,” remarked a lead coordinator for the butterfly assessment. “The positive thing is that so many individuals care now and there’s a lot more understanding. Under the EU’s nature restoration regulation, all participating nations have to reverse the decrease in pollinating species by 2030, and they are going to have to begin taking action. There are property owners who are interested. It is hoped they can obtain the incentives that will assist them on their way.”
According to Martin Warren, there is “easy opportunities” in terms of steps for pollinating species which will not decrease agricultural output – and could improve it – such as agricultural producers developing flower-rich margins around their farmland.
EU commissioner for environment, portrayed the preservation condition of wild bees, butterflies and other pollinators as “dire”.
“Prompt and unified steps is required to confront this risk. Along with participating nations, the EU Commission has established an European Union-wide observation system for pollinating species based on the EU nature restoration law, which will help to track our advancement. Now, we need to focus on application and cooperation with member states to preserve our pollinating insects,” she said.
The issuance of the bee and butterfly assessments follows the initial European-wide assessment of hoverflies, another vital pollinating insect category. Released in twenty-twenty-two, it revealed that over one-third of all hoverfly types in the European continent were facing extinction.
