9:50am August 9, 2013

➸ Neonicotinoids are the new DDT killing the natural world

thefreelioness:

Neonicotinoids are already known as a major cause of the decline of bees and other pollinators. These pesticides can be applied to the seeds of crops, and they remain in the plant as it grows, killing the insects which eat it. The quantities required to destroy insect life are astonishingly small: by volume these poisons are 10,000 times as powerful as DDT. When honeybees are exposed to just 5 nanogrammes of neonicotinoids, half of them will die. As bees, hoverflies, butterflies, moths, beetles and other pollinators feed from the flowers of treated crops, they are, it seems, able to absorb enough of the pesticide to compromise their survival.

…

Neonicotinoids are highly persistent chemicals, lasting (according to the few studies published so far) for up to 19 years in the soil. Because they are persistent, they are likely to accumulate: with every year of application the soil will become more toxic.

What these pesticides do once they are in the soil, no one knows, as sufficient research has not been conducted. But – deadly to all insects and possibly other species at tiny concentrations – they are likely to wipe out a high proportion of the soil fauna. Does this include earthworms? Or the birds and mammals that eat earthworms? Or for that matter, the birds and mammals that eat insects or treated seeds? We don’t yet know enough to say.

This is the story you’ll keep hearing about these pesticides: we have gone into it blind. Our governments have approved their use without the faintest idea of what the consequences are likely to be.

Read the rest here.

65 notes