mpenn
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Post by mpenn on Feb 24, 2018 5:51:55 GMT -8
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Deleted
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Post by Deleted on Feb 25, 2018 10:14:54 GMT -8
Populations of everything are down all over the world except for humans.
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Deleted
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Post by Deleted on Feb 25, 2018 12:19:23 GMT -8
They have all been caught by collectors...........according to National Geographic.
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Deleted
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Post by Deleted on Feb 25, 2018 17:13:49 GMT -8
That is exactly right. More humans means more collectors equals less butterflies. Makes perfect sense. Global warming is our fault too. We are generating too much friction in the air from swinging nets.
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Post by exoticimports on Feb 26, 2018 13:25:59 GMT -8
Populations of everything are down all over the world except for humans. Not quite. Deforestation presented an ecologically rare opportunity for grassland species to expand. Also, look at pidgeons. In my area, deer are estimated to be higher than pre-colonial times. Largemouth bass are found virtually everywhere in USA, as well as parts of Europe and Latin America. Not to mention the Tilapia. And even if China eats every animal on the continent we have plenty of filter feeding carp in the eastern USA. And there's always the pidgeon. And rats. And roaches. Chuck
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Deleted
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Post by Deleted on Feb 26, 2018 16:28:38 GMT -8
Ha ha. I forgot about the species that we "manage" and the one's that mooch off us.
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leptraps
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Post by leptraps on Feb 26, 2018 17:16:50 GMT -8
Now I know you are talking about politicians.
Worse than Japanese Beetles, Crab Grass , Dandelions, Asian Flue, Lawyers, and even Milo Tenarius Tulaqua. Politicians, the scum of the earth. Worse than NARF....
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Deleted
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Post by Deleted on Feb 26, 2018 19:05:50 GMT -8
Yes sir we can't leave those out.
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Deleted
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Post by Deleted on Feb 26, 2018 23:11:54 GMT -8
Wish we could "manage" politicians, I can think of several hundred ways to do it, the best being a several feet high killing jar.
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Post by johnnyboy on Feb 27, 2018 0:19:12 GMT -8
The most likely cause of the collapse in insect populations is the long term use of Neonicotinoid insecticides. This class of pesticide is incredibly toxic to insects but is supposedly less toxic to vertebrates than previous organophosphorus insecticides. I have spoken to a couple of arable farmers local to me, on the outskirts of SE London, and they have told me that year on year, every spring they have been forced to use larger and larger applications of insecticide and herbicide in order to keep insect pests and weeds at bay.
I don't blame farmers, they're just trying to make a living, however the whole process is counter productive because all the natural checks to pest species have been largely destroyed, both insect predators and insectivorous birds. Here in the UK the population of the Spotted Flycatcher, a bird once relatively common, has fallen by 98% over the last decades. Carabid beetle populations have crashed over much of Western Europe, the violet bordered ground beetle Carabus violatus used to be common in SE London, its now extinct in that area.
Interestingly, some organic farms locally have seen crop yields increase, so it might be high time to ban all nicotine type insecticides.
Johnny
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Post by wollastoni on Feb 27, 2018 0:29:15 GMT -8
Indeed it is "funny" that a civilization who allow to put TONS of insecticides on 97% of crops ask "Where have all insect gone" ? The answer is simple : they have been exterminated by modern agriculture. Go in altitude, where there is no modern agriculture, you will see plenty of insects.
Then of course, turning all small woods and meadow in a ugly commercial zone under concrete doesn't help.
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Post by bichos on Feb 27, 2018 0:44:53 GMT -8
Not very scientific. Plenty of insects here...
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antsrule
Junior Member
Winter is killing me.
Posts: 38
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Post by antsrule on Mar 5, 2018 17:58:00 GMT -8
Not very scientific. Plenty of insects here... I disagree, that is the completely wrong approach. Unless that was sarcasm, which I cant read very well lol.
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