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Old 10-20-2017, 09:07 PM   #1
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Default Where Have All The Insects Gone?

Can we figure this out? Habitat loss, pesticide problems , climate change, etc...etc...etc...

Where have all the insects gone? | Science | AAAS

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Over that time the group, the Krefeld Entomological Society, has seen the yearly insect catches fluctuate, as expected. But in 2013 they spotted something alarming. When they returned to one of their earliest trapping sites from 1989, the total mass of their catch had fallen by nearly 80%. Perhaps it was a particularly bad year, they thought, so they set up the traps again in 2014. The numbers were just as low. Through more direct comparisons, the group—which had preserved thousands of samples over 3 decades—found dramatic declines across more than a dozen other sites.
Such losses reverberate up the food chain. "If you're an insect-eating bird living in that area, four-fifths of your food is gone in the last quarter-century, which is staggering," says Dave Goulson, an ecologist at the University of Sussex in the United Kingdom, who is working with the Krefeld group to analyze and publish some of the data. "One almost hopes that it's not representative—that it's some strange artifact."
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Since their initial findings in 2013, the group has installed more traps each year. Working with researchers at several universities, society members are looking for correlations with weather, changes in vegetation, and other factors. No simple cause has yet emerged. Even in reserves where plant diversity and abundance have improved, Sorg says, "the insect numbers still plunged."
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Old 10-21-2017, 08:48 AM   #2
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I just saw an article about this yesterday when starting my computer at work. You saved me the trouble of tryi ng to find it and post it.

Sad and scary...I only hope that it is a wake up call.
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Old 10-22-2017, 09:33 AM   #3
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Originally Posted by Gloria View Post
Can we figure this out? Habitat loss, pesticide problems , climate change, etc...etc...etc...

Where have all the insects gone? | Science | AAAS
Upon reflection, I didn't need to read this in the article you posted, as I've been experiencing it here in my yard. In years past, I couldn't turn on my porch light at night for fear of filling my house with moths and other nocturnal insects if I opened the slider. In the past few years, however, I've noticed the light attracts very few insects, in spite of the fact that the yard is much more insect friendly now than it was in those former years.

These are scary times, indeed!
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Old 10-23-2017, 08:44 PM   #4
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One of my mom's favorite stories from the 50's was the time her uncle forgot to put up his convertible top and the mayflies descended on his car. Lake Erie used to produce huge clouds of them every year but that has not been true for 40+ years.
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Old 10-25-2017, 09:26 PM   #5
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I know from walking through our neighborhood at night, that our yard is the only place I hear lots of crickets, katydids and others. The well-kept lawns have only the occasional "chirp". Hubby and I have noticed it for years.
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