CultureCitizen
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- Jun 1, 2013
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- #321
Any actual data to back that up? Of course not. More unfounded, unsupportable garbage... Clearly you hold your position as a result of politics....nothing whatsoever to do with science led you to where you are now.
That was just figuritative: Yes, many species are discovered, because the exploration of plant and animal species is not finished and is a continuous tasks. Many of those species are difficult to account for ( insects , nematodes, plants ).
For accounting purposes we should stick to vertebrates, which are way easier to keep track of.
"Although 875 extinctions occurring between 1500 and 2009 have been documented by the International Union for Conservation of Nature and Natural Resources,[1] the vast majority are undocumented. According to the species-area theory and based on upper-bound estimating, the present rate of extinction may be up to 140,000 species per year"
"Stuart Pimm stated "the current rate of species extinction is about 100 times the natural rate" for plants.[12] Mass extinctions are characterized by the loss of at least 75% of species within a geologically short period of time."
Holocene extinction - Wikipedia, the free encyclopedia
So , there you have the sources, now I would very much like to have any links from your part prooving that we humans are NOT the cause for a mass extinction event.
I hate to break it to you but using wiki as your source is less than compelling. What's funny is even they can't agree on if it is happening, and this is a propaganda piece. You really need to do better than this.
Do you have any references showing the oposite : current extinction level is business as usual ?
You are currently supporting your statements with thin air, unless you are a biologist by trade , in whose case I would assume you've written one or two papers about the topic.
No. I am supporting my position based on the fact that YOUR people can't provide one iota of factual data to support what they say. In science the people making the claim MUST prove it. It is impossible to prove a negative. Or didn't you know that?
Not acceptable.
I agree there's quite a debate amongst the scientific community about whether or not weather warming is caused by human activity and the role of CO2, but you will not find any scientific claiming human triggered extinction is a hoax. No sir.
"It is not imposible to proove a negative", that's inaccurate . It is imposible to prove a universal negative .
Proove the world is NOT flat : cakewalk.
Prove there are NO pink elephants : hard as hell because you have to sample every existing elephant.
Many species are too small to be counted efectively so , I would rather reduce the discussion to vertebrates which are easier to count.
So here it goes :vertebrates populations declining by 30% in 40 years.
"The Evolution Lost report, published in the journal Science by more than 100 of the world's leading zoologists and botanists, found that populations of mammal, bird, reptile, amphibian and fish species had declined by an average of 30% in the past 40 years."
"Future extinctions risks are projected to be high, but the biodiversity crisis is much more than extinctions,"
One-fifth of world's back-boned animals face extinction, study warns