Deleted
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Post by Deleted on Jun 20, 2015 11:17:45 GMT
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Post by nomad on Jun 20, 2015 18:39:18 GMT
Sir David Attenborough recently called humans, " A plague on the Planet". Yes, we will use up Earth's natural resources. Yes, Mankind will ruin our beautiful planet and cause mass extinctions.
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Post by timmsyrj on Jun 20, 2015 19:37:21 GMT
Totally laughable, 320 extinctions since 1500 ( I presume that's the year not 3 o'clock this afternoon) since they had no idea just how many species there were in the world in the 1500's this can only be a guess, the fact that 10's of thousands have been descovered since then is not taken into account and the distribution of species is getting smaller because they are constantly being split into new species, each time reducing the range of the first, Papilio cressphontes for instance is no longer found in eastern U.S, doesn't mean it became extinct overnight, it suddenly became Papilio rumiko.
Rich
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Post by Adam Cotton on Jun 20, 2015 20:35:10 GMT
Papilio cressphontes for instance is no longer found in eastern U.S, doesn't mean it became extinct overnight, it suddenly became Papilio rumiko. Rich Rick, Papilio cresphontes still lives in eastern USA, it's the populations in the west and in Central America that were split as Papilio rumiko. Adam. PS. I haven't seen the report because the Daily Mail website is blocked in Thailand, but I gather there was an estimate that we are supposedly in a new age of extinctions. As far as I can see the current extinctions are actually caused by mankind.
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Post by Deleted on Jun 21, 2015 14:14:07 GMT
What would be an interesting comparison would be if aerial pictures could be seen from say 40-50 years ago to some from the present day, that would show in no uncertain terms the devastating effect habitat destruction has had, it is clear that if it goes on at the present rate, animal and plant life will be left with nowhere to go.
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Post by wollastoni on Jun 21, 2015 15:42:30 GMT
Indeed human species has turned out to be the Earth parasite. We will suck it until its death... and ours. Borneo, SE Asia and a big part of Amazonia has been totally deforested in only 50 years to produce food and palm oil for the rest of the World. The rest of the World will keep on consuming so much (if nor more) in the next decades. To be able to feed the world, Papua, Congo, Gabon and the rest of Amazon will be sacrified. 50 years later, we will have to destroy the few remaining natural parts here and there. And then it will be the end. Maybe not the end of the human species, but the end of the Civilization. There will be so much migrants from the South of the World, there won't be enough food and oil for everyone. I doubt the North will accept to share. So it will be war everywhere. All this because our governments don't take the necessary measures (birth control, habitat protection). And 50 years later it will be like in the great book " The Road"...
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Post by Deleted on Jun 21, 2015 18:01:41 GMT
This is one of the main reasons why I think we should collect lepidoptera, it will be the only place to see these beauties in 50 years, inside a cabinet drawer as most if not all will have gone from the wild, I am only 50 years old and the changes that have gone on in my lifetime are staggering, and not in a good way.
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Post by nomihoudai on Jun 22, 2015 21:27:20 GMT
Totally laughable, 320 extinctions since 1500 ( I presume that's the year not 3 o'clock this afternoon) since they had no idea just how many species there were in the world in the 1500's this can only be a guess, the fact that 10's of thousands have been descovered since then is not taken into account and the distribution of species is getting smaller because they are constantly being split into new species, each time reducing the range of the first, Papilio cressphontes for instance is no longer found in eastern U.S, doesn't mean it became extinct overnight, it suddenly became Papilio rumiko. Rich Rich, the article is not talking about insects. Your examples of Papilio have therefore nothing to do with the article, a vertebrate species is something much more uncommon than insects. It is 338 extinctions as a lower estimate since 1500, the regular estimate they give is 617. Furthermore it doesn't matter how many species there is or are known. If it is gone it is gone. If I had a $5 bill in my wallet that I have spilled coffee onto, which I could not find after checking in the front where I always kept the bill, then it would not matter how many other bills I additionally had in my wallet. Splitting of names will also not factor in, a dead Dodo is a dead Dodo. The full article is here, I don't know if everybody can access the page or not: advances.sciencemag.org/content/1/5/e1400253.full
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Post by wollastoni on Jun 23, 2015 7:15:28 GMT
Indeed we all agree on that !
I am personnally proud to be a witch, when I see what "normal people" are doing to Nature.
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Post by Deleted on Jun 23, 2015 19:18:48 GMT
Actually in the UK it's not just protective legislation that's the problem, it is the conservation bodies too, if they had their way they would outlaw all collecting and make it illegal to collect ANY species of British butterfly, butterfly conservation has I think over 8000 members, some of these through ignorance truly believe that collecting is to blame for a certain species becoming rarer. The fact is in this tiny, overpopulated country of ours that good habitat is at a premium now that everything else in under concrete, I dare say that if you compared aerial pictures of England from 1960 to present day pictures the results would be just as bad as any tropical country.
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Post by nomad on Jun 26, 2015 17:25:16 GMT
Butterfly Conservation in the U.K in fact has a membership of 23,000 and its growing fast each year. Habitat change has been responsible for all of our extinctions. No species here has ever found to have become extinct through the activities of collectors.
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Post by Adam Cotton on Jun 26, 2015 20:30:24 GMT
... but some may have become extinct due to over-zealous 'conservationists' who didn't know what they were doing.
Adam.
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Post by Deleted on Jun 27, 2015 9:21:49 GMT
"... but some may have become extinct due to over-zealous 'conservationists' who didn't know what they were doing"
True and there have been more than a few instances where that has been the case, their careful "management" of some sites has been nothing short of a disaster.
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cyane
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Post by cyane on Jul 1, 2015 7:40:51 GMT
I have read that Maculinea arion became extinct in at least some localities in England because of "conservationists" fencing off the sites to keep out sheep and rabbits etc. The resulting growth of long grasses etc shaded and cooled down the sites which caused M arions' ant prey species to abandon the site.
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Post by wollastoni on Jul 1, 2015 12:15:25 GMT
Yes "conservationists" have made some errors. We can also say that it is a difficult science to save already condemned populations and people have now learnt from those errors.
Let the biotope live and insect species with thrive there.
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