Pollution Cutting Ability Of Flowers' Scents To Travel, Limiting Pollination - Independent

[hatrack]

Pollution is dulling the scent of flowers and impeding some of the most basic processes of nature, disrupting insect life and imperilling food supplies, a new study suggests.

The potentially hugely significant research – funded by the blue-chip US National Science Foundation – has found that gases mainly formed from the emissions of car exhausts prevent flowers from attracting bees and other insects in order to pollinate them. And the scientists who have conducted the study fear that insects' ability to repel enemies and attract mates may also be impeded.

The researchers – at the University of Virginia – say that pollution is dramatically cutting the distance travelled by the scent of flowers. Professor Jose Fuentes, who led the study, said: "Scent molecules produced by flowers in a less polluted environment could travel for roughly 1,000 to 1,200 metres. But today they may travel only 200 to 300 metres. This makes it increasingly difficult for bees and other insects to locate the flowers."

The researchers – who worked on the scent given off by snapdragons – found that the molecules are volatile, and quickly bond with pollutants such as ozone and nitrate radicals, mainly formed from vehicle emissions. This chemically alters the molecules so that they no longer smell like flowers. A vicious cycle is therefore set up where insects struggle to get enough food and the plants do not get pollinated enough to proliferate. Already bees – which pollinate most of the world's crops – are in unprecedented decline in Britain and across much of the globe. At least a quarter of America's 2.5 million honey bee colonies have been mysteriously wiped out by colony collapse disorder (CCD), where hives are found suddenly deserted.

EDIT

http://www.independent.co.uk/environment/nature/why-flowers-have-lost-their-scent-812168.html

[Shoelace]

1. time to wake up and smell the roses?

we bemoan the high cost of gasoline but it might be the only factor that drives our world to seek alternatives, and at least some flowers might be left along with their bee friends who co-evolved with them for so many hundreds of millions of years.

BTW, I read the comments from that UK article and am now assured that the Exxon/PR machines are alive and well, paying astroturfers to post whenever they see an article that might threaten said corp's profits!