New research on
"neonics" shows lasting impact on wetlands with "domino
effect" Published on Tuesday, January 7, 2014 by Common Dreams
- Andrea Germanos, staff writer
A field of canola in
Saskatchewan. (Photo: Adam Kahtava/cc/flickr)The "impact on
biodiversity" from a controversial class of insecticides called
neonicotinoids "could be probably bigger than we've ever seen before if we
keep going at this rate," a biologist has warned.
Speaking to Canada's CBC News about findings from her four-year
study in progress, Christy Morrissey, a biologist with the University of
Saskatchewan, warned that the widespread use of "neonics," as they
are also called, across Canada's Prairies has contaminated wetlands, thereby
risking a "domino effect" on the insects and birds that demand upon
them.
Neonicotinoids have
been linked to harm to bees and other pollinators, as well as the developing human nervous system, and a report on bee mortalities released by Canada's
pesticide regulatory body, the Pest Management Regulatory Agency,
"concluded that current agricultural practices related to the use of
neonicotinoid treated corn and soybean seed are not sustainable."
CBC
News reports that
"in Western Canada, neonics are most commonly found on canola,"
and adds that all of the 8.5 million hectares of canola planted in the three
Prairie provinces—Alberta, Saskatchewan and Manitoba—have been treated with
neonics.
"We
all want to have food that we consume and enjoy. But at what cost? Is that at
the cost of having no more birds around? Of having no more butterflies? Having
no bees?"
—Christy Morrissey, University of Saskatchewan In addition to finding concentrations of neonics far above levels thought to be safe for insects, Morrissey's research found that the insecticides persisted in the water in some cases for years, meaning that "the bugs... basically are being hit continuously with the chemical."
—Christy Morrissey, University of Saskatchewan In addition to finding concentrations of neonics far above levels thought to be safe for insects, Morrissey's research found that the insecticides persisted in the water in some cases for years, meaning that "the bugs... basically are being hit continuously with the chemical."
Given that at least 44
percent of cropland across Alberta, Saskatchewan and Manitoba has been doused
with neonics, Morrissey told the news agency that the area of potential harm was
vast, and said that "upwards of 80 to 90 per cent of the wetlands [her
research team sampled] are contaminated."
Her research so far
points to a decline in mosquitoes and midges—and "insects are basically
the food supply for a lot of wildlife," Morrissey said.
"We all want to
have food that we consume and enjoy. But at what cost?" Morrissey asked.
"Is that at the cost of having no more birds around? Of having no more
butterflies? Having no bees? People are thinking about that now."
Guardian columnist George Monbiot wrote that neonicotinoids are "ripping the
natural world apart," referring to them as "the new DDT," and
warning they are "another demonstration of the old truth that those who do
not learn from history are destined to repeat it."
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