Title : The Insect Apocalypse that Never Was- Another AGW Lie Bites the Dust
link : The Insect Apocalypse that Never Was- Another AGW Lie Bites the Dust
The Insect Apocalypse that Never Was- Another AGW Lie Bites the Dust
Recall the insect apocalypse news? I surely do. As someone who spends lots of time outdoors.. there seemed to be an abundance of insects- In fact I've never seen more butterflies fluttering about, then the many that have delighted me these past few months. Including identifying two new, to myself, types of butterflies. Which pleased me to no end!The Insect Apocalypse that Never Was
"In recent years, the notion of an insect apocalypse has become a hot topic in the conservation science community and has captured the public’s attention. Scientists who warn that this catastrophe is unfolding assert that arthropods – a large category of invertebrates that includes insects – are rapidly declining, perhaps signaling a general collapse of ecosystems across the world.
But in a newly published study that I co-authored with 11 colleagues, we reviewed over 5,000 sets of data on arthropods across North America, covering thousands of species and dozens of habitats over decades of time. We found, in essence, no change in population sizes.
Our findings indicate that overall, the idea of large-scale insect declines remains an open question.
Some scholars were skeptical of the reported insect apocalypse. A number of studies that showed broad declines were limited geographically, focusing mainly on Europe. Typically these studies analyzed only a few species or groups of species.
Some particularly long-running assessments showed that declines in the past 30 years occurred after periods when the relevant insect populations increased. Many insect populations are known to naturally fluctuate, sometimes dramatically.
Many scientists concluded that while the prospect of mass insect losses was concerning, the jury was still out on what was actually happening.
Spotlighting North America
Ecologist Bill Snyder and I thought that the studies suggesting widespread insect die-offs produced an intriguing pattern with important ramifications, but that the evidence wasn’t strong enough yet to draw conclusions. We wanted to examine what was happening in North America, which has an immensely diverse landscape and, surprisingly to us, had not been broadly analyzed for insect declines.
For our study, we decided to use data from sites in the Long Term Ecological Research network, which is supported by the National Science Foundation. The network includes 28 sites across the U.S. that have been studied in depth since the 1980s, and covers deserts, mountains, prairies and forests. With almost 40 years of data collected, we hoped trends at these sites would be a good complement to European insect studies.
We put together a 12-person team that included six undergraduate students, post-doctoral scholars Michael Scott Crossley and Amanda Meier, and colleagues from the U.S. Department of Agriculture. When we finished compiling our data sets, at least some of us expected to see broad insect declines.Imagine that? The AGW crowd lied. Exaggerated. Prevaricated. I'm shocked I tell you! Shocked!
Instead, the results left us perplexed. Some species we considered declined, while others increased. But by far the most common result for a species at a particular site was no significant change. The vast majority of our species had stable numbers.
At first we thought we were missing something. We tried comparing different taxonomic groups, such as beetles and butterflies, and different types of feeding, such as herbivores and carnivores. We tried comparing urban, agricultural and relatively undisturbed areas. We tried comparing different habitats and different periods of time.
But the answer remained the same: no change. We had to conclude that at the sites we examined, there were no signs of an insect apocalypse and, in reality, no broad declines at all."
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