Date: 9/9/19 10:08 pm From: Roger Kuhlman <rkuhlman...> Subject: Re: [birders] What has happened?
I would feel most of insect biomass loss in America is due to habitat loss or severe habitat degradation. I would look at the matter of insecticide usage as contributing to habitat loss both directly and indirectly through the imposition of crop mono-cultures on large swathes of land by new GMO agricultural techniques. A soybean or corn mono-culture is not a rich habitat that supports a thriving native ecosystem and varied insect diversity. In the past such mono-cultures in agricultural fields or on their margins was not agriculturally possible and far more ecological diversity existed in them.
Ann Arbor, Michigan
From: 'jochen roeder' via Birders <birders...>
Sent: Monday, September 2, 2019 4:44 AM
To: P. swanson <jumpthroughhoops...>; Alan Ryff <alryff...>; Fred Kaluza <fkaluza...>
Cc: Birders UM <birders...>
Subject: Re: [birders] What has happened?
According to monitoring studies, Germany has lost around 75% of insect biomass during the last 30 years. While habitat loss certainly plays a role as well, this is though to be mostly a result of increased pesticide use. I suspect the same is true for many parts of the USA. A "classic example" that is usually given to demonstrate this: during the 1980's, it was common practice to clean the windshield of insect remains with a special sponge available at petrol stations, at least at every stop to fill up gas. It was not unusual - from personal experience - that you'd stop at a petrol station specifically to use these sponges to clean the windshield without having to buy gas at all. Nowadays, I scarcely ever clean the windshield, as you can drive for weeks without collecting a significant amount of insect stains.
Am Montag, 2. September 2019, 02:23:45 MESZ hat Fred Kaluza <fkaluza...> Folgendes geschrieben:
I was at a baseball game in Utica last night. Jimmy John’s Stadium on M-59. Granted, the evening was a little cool but...with all the high intensity lamps surrounding the stadium and field, during the entire game, we noticed one flying Mantid some House Sparrows and a couple Gulls. No moths, no June Bugs, no Mayflies, no Katydids no Cicadas and no Mosquitos. For late Summer, it did not seem right.
On Sun, Sep 1, 2019 at 4:42 PM -0400, "'P. swanson' via Birders" <birders...><mailto:<birders...>> wrote:
It wasn’t that many years ago that I used to walk my dogs at night by St. Michael’s Church in Grosse Pointe and both see and hear the nighthawks swooping and diving for insects, not to mention the same at the old Tiger Stadium at night games under the lights. It reminds me of that old Judy Collins song,
“Don’t it always seem to go that you don’t know what you’ve got till it’s gone,
They paved paradise to put up a parking lot”.
As Robert Redford once said, “no one cares.” Sad but I’m afraid true. Just look at all the folks still asking for plastic bags at the grocery store.
We could all use more nature time.
In days goneby when today’s old men were children, ribbons of Nighthawks, sometimes in thehundreds, would stream south just above the rooftops as the sunset gives itsdeepest colors. And sometimes, themorning sunshine could find a sleeping Nighthawk on nearly every streetlightfor blocks around. Today this is nolonger so. Now and then, theneighborhoods along Lake Saint Clair see or hear a single or perhaps a fewNighthawks at a time pass over in theevening quiet. Alas, what has happened?