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Old 06-20-2018, 08:23 PM
 
Location: Nantahala National Forest, NC
27,091 posts, read 7,318,388 times
Reputation: 30347

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Quote:
Originally Posted by guidoLaMoto View Post
Loss of habitat. Period.

That's what I was thinking...
and why it's upsetting not to see butterflies, bees etc.
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Old 06-21-2018, 06:24 AM
 
Location: Southern MN
7,538 posts, read 4,300,081 times
Reputation: 26948
Southern MN. I surreptitiously sowed a few wild milkweed next to the fence a couple of years ago. No luck. Same with butterfly weed. But then this year a few showed up.

I can't tell Mother Nature what to do. When she plants they grow; when I plant, not so much.

I begged Dh to let them stay and he's only pulled one so far. They're in his tomato patch. Little trespassers.
Now if it would just stop drizzling I could start checking them.

We went out to the State park to see the new baby buffalo last week and the air smelled so wonderful I had to pick a sprig and bring it home to identify. Turns out it's a variety of milkweed I didn't know. I checked the milkweed out there but didn't see any evidence of the larvae.

My new delightfully scented friend, whorled milkweed.
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Old 06-22-2018, 06:16 AM
 
Location: Glasgow Scotland
15,570 posts, read 13,730,212 times
Reputation: 22932
Quote:
Originally Posted by greatblueheron View Post


Has anyone had a large no. of butterflies in your garden this year?

My butterfly bush has numerous blooms but one butterfly (that I've seen) so far.

Hoping we have not killed them off.
Our butterfly and bee population has also dwindled and yes we are killing them all off. and if they die so do we... this is what is being overlooked with pesticides use..
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Old 06-22-2018, 06:25 AM
 
Location: Nantahala National Forest, NC
27,091 posts, read 7,318,388 times
Reputation: 30347
Quote:
Originally Posted by dizzybint View Post
Our butterfly and bee population has also dwindled and yes we are killing them all off. and if they die so do we... this is what is being overlooked with pesticides use..
Yes, and loss of habitat. It hurts my heart what we've done to our natural world.
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Old 06-22-2018, 08:44 AM
 
Location: The Driftless Area, WI
4,080 posts, read 1,594,138 times
Reputation: 9509
Quote:
Originally Posted by dizzybint View Post
Our butterfly and bee population has also dwindled and yes we are killing them all off. and if they die so do we... this is what is being overlooked with pesticides use..

Not quite time to start wringing our hands. Pesticides are not the problem they have been accused of being compared to habitat loss.



Habitat loss is a big problem, but fragmentation of habitat may actually have a bigger effect in the real world. Keep in mind that 50% of the world's population lives within 50 miles of an ocean shore. There's a heckuvalot of space left over after we sterilize our own home areas, but much of that is in patches that are not contiguous, limiting a population's ability to travel about, spread their seeds, etc.


A big advantage of the notorious devil glyphosate is that it has a short half-life (ie- it's quickly degraded and rendered harmless), and don't forget, it's a herbicide and doesn't have much effect on animal enzyme systems.


The pesticides are usually neurotoxic agents and don't harm plants (plants don't have neuros to toxify)) and most row crops on which they are used are wind/self pollinated and not attractive to pollinator insects, therefore the exposure to those agents is limited.



BTW- a recent study from Germany that said insect populations are down 75% has been followed up with another study that blames light pollution even more than poison or habitat loss: artificial lighting is disrupting the normal diurnal/nocturnal signals for mating, feeding, migrating.
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Old 06-22-2018, 08:27 PM
 
Location: Near Falls Lake
3,192 posts, read 2,175,738 times
Reputation: 3017
We have significant butterfly habitat on my property complete with everything they like....not seeing them this year. Last year we had insane numbers.
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Old 06-23-2018, 08:55 AM
 
Location: Nantahala National Forest, NC
27,091 posts, read 7,318,388 times
Reputation: 30347
Quote:
Originally Posted by carcrazy67 View Post
We have significant butterfly habitat on my property complete with everything they like....not seeing them this year. Last year we had insane numbers.
it's so disturbing....
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Old 06-23-2018, 09:20 AM
 
Location: LI,NY zone 7a
2,217 posts, read 1,407,132 times
Reputation: 2705
Nothing here either.
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Old 06-24-2018, 05:37 AM
 
Location: The Driftless Area, WI
4,080 posts, read 1,594,138 times
Reputation: 9509
Responders here show conditions seem to be variable across the country.. We're having a typically good year for butterflies here, but then, we are rural- mostly forests & pasture, not much row cropping. And not much new building.



I wonder how much of that variability is due to local changes in land use vs natural population fluctuations? Last time the 17 yr cicada has an outbreak here (2007) butterfly populations seemed to skyrocket as the birds had "easy pickin's" on the cicadas and left the caterpillars alone (for example).
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