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Germany plans to dim lights at night to save insects

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Re: Germany plans to dim lights at night to save insects

#111

Light pollution seems to be a good thing to suppress in general (a bonus for astrological sight-seeing). Could one factor be that constant light negatively affects insect (and plant) circadian rhythms?

I think you meant "astronomical" sight-seeing? ;-)

Yes, constant light does have a strong effect on animal circadian rhythms, but for insects, the problem is rather that they exhaust themselves from flying around the light source too long.

Re: Germany plans to dim lights at night to save insects

#112

The best thing we can do on a personal level is to stop using broadleaf weedkillers like Scott's Weed and Feed and other herbicides like glyphosate (Roundup). I've been doing handyman work at my boss's house during COVID-19 and he has clover growing in his yard. He has a fair number of bees, certainly more than on my end of town which is all chemlawns. It's arguably ok to use a little weed killer by hand on dandelion…

>But killing all clover, morning glories, and other broadleaf flowers in lawns has led to the near-extinction of bees in residential areas. Herbicides and pesticides in agriculture wiped out the rest.

Is that the case for sure?

I thought the state of the bee population wasn't quite that well understood...

I have no doubt that various herbicides hurt, but I'm not sure that just that science means their current population is entirely due to such use.

Re: Germany plans to dim lights at night to save insects

#113

I wonder how many centuries it might take for the US to start to care about insects or the environment like some European countries do with the recent regress in policies overall that isn't about ONLY increasing overall GDP in the US. And I say this even not considering Trump, which is a big menace. But democrat candidates in the US also don't care about the environment, not showing much promise. So do the Americans…

Some European countries, named here, only very recently cared more about insects than people.

> Some European countries, only very recently cared more about insects than people

Is not a "us or them" dichotomy. The only possible alternatives are insects-win/humans-win or insects-lose/humans-lose. We can't have agriculture without insects.

Re: Germany plans to dim lights at night to save insects

#114

I actually was sitting outside a few nights ago and realized that there was no more fireflies, and I couldn't remember the last time I had seen one. I used to go out all the time during summer as a kid to catch them, they would light up whole fields. That was just like 15 years ago. Pretty sobering realization

Last time I've seen a firefly must have been at least ten years ago.

Re: Germany plans to dim lights at night to save insects

#115
post #86

I actually was sitting outside a few nights ago and realized that there was no more fireflies, and I couldn't remember the last time I had seen one. I used to go out all the time during summer as a kid to catch them, they would light up whole fields. That was just like 15 years ago. Pretty sobering realization

I'm in Chicago (in a neighborhood close to downtown) and in previous years I'd hardly ever seen any fireflies. This year, they're everywhere -- in parks and even in trees on neighborhood streets. I understand fireflies are sensitive to light pollution. I can't imagine Chicago's any different from other major cities. COVID has people staying home a lot more but that has nothing to do with street lighting. I wonder wha…

I'm seeing the same thing in my Chicago neighborhood. We just had our alley lights changed to the new LEDs, maybe that has an impact?

Re: Germany plans to dim lights at night to save insects

#116
post #81

Earlier quoted context omitted.

Insects are kind of vital to us. Without them, you can't have crops or fruits, no agriculture. The drop in population is already concerning.

Drop according to whom? The people whose jobs depend on the alleged drop? Yesterday I had 10 flies and 5 mosquitoes simultaneously in my room. What do the bats eat? They are everywhere. There are more bats, foxes, rats and insects in big cities than ever before.

> Drop according to whom? The people whose jobs depend on the alleged drop?

Speaking as an ecologist here, colleagues of mine were authors on one of the recent studies on insect decline in Germany (https://www.nature.com/articles/s41586-019-1684-3). Believe me, we'd rather study other things than how fast nature is disappearing.

Also, foxes and rats have nothing to do with insect levels.

Re: Germany plans to dim lights at night to save insects

#117
post #8

...and get better sleep.

This. I had a big orange street lamp hanging right in front of my bedroom for years.

In Germany you can generally call the city office and complain and they will put some metal there to block the light from falling into your house. It might be an option in other locations as well.

Re: Germany plans to dim lights at night to save insects

#118

The best thing we can do on a personal level is to stop using broadleaf weedkillers like Scott's Weed and Feed and other herbicides like glyphosate (Roundup). I've been doing handyman work at my boss's house during COVID-19 and he has clover growing in his yard. He has a fair number of bees, certainly more than on my end of town which is all chemlawns. It's arguably ok to use a little weed killer by hand on dandelion…

any suggestions for a poison ivy patch? I'm doing the rounds of vinegar and placing tarps/boxes over the area, trying to avoid the nuclear option.

Re: Germany plans to dim lights at night to save insects

#119
post #94

Earlier quoted context omitted.

This will be great for stargazing as well then!

As a budding stargazer I hope this dark-nights idea spreads to other countries. Light pollution has the potential to get even worse with LED lighting which is no longer filterable like sodium lighting was.

I live in a fairly rural area in Germany and even if the nightsky is perfectly clear the cities in the distance cast a bright haze into the sky. They aren't that dark...

Re: Germany plans to dim lights at night to save insects

#120
"Every mammal on this planet instinctively develops a natural equilibrium with the surrounding environment; but you humans do not. Instead you multiply, and multiply, until every resource is consumed. The only way for you to survive is to spread to another area. There is another organism on this planet that follows the same pattern... a virus" -- Agent Smith (The Matrix)
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