Damian Carrington, THE GUARDIAN
“Unless we change our ways of producing food, insects as a whole will go down the path of extinction in a few decades,” they write. “The repercussions this will have for the planet’s ecosystems are catastrophic to say the least.”
The analysis, published in the journal Biological Conservation, says intensive agriculture is the main driver of the declines, particularly the heavy use of pesticides. Urbanisation and climate change are also significant factors.
The world’s insects are hurtling down the path to extinction, threatening a “catastrophic collapse of nature’s ecosystems”, according to the first global scientific review.
More than 40% of insect species are declining and a third are endangered, the analysis found. The rate of extinction is eight times faster than that of mammals, birds and reptiles. The total mass of insects is falling by a precipitous 2.5% a year, according to the best data available, suggesting they could vanish within a century.
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The planet is at the start of a sixth mass extinction in its history, with huge losses already reported in larger animals that are easier to study. But insects are by far the most varied and abundant animals, outweighing humanity by 17 times. They are “essential” for the proper functioning of all ecosystems, the researchers say, as food for other creatures, pollinators and recyclers of nutrients.
Read more at https://www.theguardian.com/environment/2019/feb/10/plummeting-insect-numbers-threaten-collapse-of-nature
Jeff Cox, THE PRESS DEMOCRAT
If you discover that some kind of insect is damaging your garden, what should you do?The best thing you can do? Keep calm and carry on. The worst thing you can do? Spray your garden with insecticide. Here’s why.
First of all, a little insect damage is actually good for your crops, whether edible or ornamental. It stimulates growth hormones to repair damage and stimulates the plants to produce insect-repelling compounds.
But what if a pest is so numerous that it threatens to destroy your crop? That’s a signal you need to encourage more beneficial insects to live in your garden, the kind that eat pests for breakfast, lunch and dinner. You can invite them in by planting nectar and pollen-producing plants, especially ones with umbrella-shaped flower and seedheads, like fennel, dill, and carrot, even the wild carrots called queen anne’s lace.
Insect scientists also suggest leaving about 10 percent of your garden space planted in whatever happens to grow wild there (except blackberries and poison oak). This will be habitat for native pest-eating insects.
Pests are food for beneficial insects, so by spraying insecticide on your garden, you are wiping out the pests and the good guys. Pests, however, are designed by nature to be the first ones back into a garden that has been sprayed. After all, they eat plants, so the table is set.
Until pest populations build up, there’s not much for beneficials to eat, so they show up last. The result is that your pest problem will be worse than before.
Read more at: Tips, tricks to debugging your garden | The Press Democrat