Humanity has wiped out 60% of animal populations since 1970

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Kiprobalhato
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01 Nov 2018, 3:41 pm

EzraS wrote:
The Japanese sea lion was an aquatic mammal thought to have become extinct in the 1970s. It was considered to be a subspecies...

The Pyrenean ibex, Spanish common name bucardo, Catalan common name herc and French common name bouquetin was one of the four subspecies...

and what was the point in making the distinction?


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01 Nov 2018, 4:30 pm

I'm all too painfully aware of this; try every day to avoid going nuts as a result, avoid thinking of what I can do nothing about.


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B19
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01 Nov 2018, 5:11 pm

Yes. It's distressing that the so-called most superior extant creature, homo sapiens, has brought the biodiversity of the world to this critical state of affairs. Stupidity, greed, callousness, cruelty on a scale that can hardly be comprehended.



thoughtbeast
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01 Nov 2018, 6:11 pm

EzraS wrote:
Okay so 7% is supposed to be a result of climate change.

That MSN news link goes to a story about Trump (surprise surprise).


No, the link goes to the MSN news homepage, because they've changed the url. It's just that Trump is busy making news as usual.

Here's the updated link:

Species that have gone extinct in our lifetime

Tested this one and it works.



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01 Nov 2018, 6:21 pm

hurtloam wrote:
That 60% is an average btw. It's doesn't mean humans have wiped out exactly 60% of animals.

Here's a link to an article in The Atlantic which explains it.

Quote:
Ultimately, they found that from 1970 to 2014, the size of vertebrate populations has declined by 60 percent on average. That is absolutely not the same as saying that humans have culled 60 percent of animals—a distinction that the report’s technical supplement explicitly states. “It is not a census of all wildlife but reports how wildlife populations have changed in size,” the authors write.

To understand the distinction, imagine you have three populations: 5,000 lions, 500 tigers, and 50 bears. Four decades later, you have just 4,500 lions, 100 tigers, and five bears (oh my). Those three populations have declined by 10 percent, 80 percent, and 90 percent, respectively—which means an average decline of 60 percent. But the total number of actual animals has gone down from 5,550 to 4,605, which is a decline of just 17 percent.


Have we really killed 60% of animals



Well stated!

And from elsewhere in the same article:

Quote:
None of this is to let humanity off the hook. Since prehistory, humans have killed off so many species of mammals that it would take 3 million to 7 million years of evolution for them to evolve an equivalent amount of diversity. At least a third of amphibians face extinction, thanks to climate change, habitat loss, and an apocalyptic killer fungus. Even invertebrates aren’t off the hook. There might be fewer data for them, but the data that exist paint an alarming picture of rapidly disappearing insects, even in supposedly pristine forests. Meanwhile, in the oceans, coral reefs are bleaching too quickly to recover: Half of the corals in the Great Barrier Reef have died since 2016. All this evidence points to a period of “biological annihilation” that some have likened to the five great mass extinctions of the past. When the reality is this sensational, there’s not much need to sensationalize it even further.



JohnPowell
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01 Nov 2018, 6:28 pm

That's why we need to do something about mass immigration. The world's population is getting out of control.


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01 Nov 2018, 6:34 pm

EzraS wrote:
Kiprobalhato wrote:
EzraS wrote:
Name 25 animals that existed in 1970 that don't exist now because of climate change.


japanese sea lion

saudi gazelle

pyrenian ibex

wimmer's shrew

baiji

emma's giant rat

kouprey

one striped opossum

dinagat hairy-tailed cloud rat

new zealand greater short tailed bat

golden toad

yunnan lake newt

ainsworth's salamander

gastric brooding frog

javan tiger

bachman's warbler

eskimo curlew

mariana mallard

moho braccatus


maui 'akepa

hooded seedeater

'o'u

dusky seaside sparrow

alaotra grebe


How rare were those subspecies to begin with?


The way that the human-caused extinction process usually works, Ezra, is that a species goes into decline, becomes endangered, becomes critically endangered and then goes extinct. So naturally they were "rare" just before they became extinct. So the answer to your question is a simple matter of critical thinking.



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01 Nov 2018, 7:06 pm

JohnPowell wrote:
That's why we need to do something about mass immigration. The world's population is getting out of control.


I won't laugh 100% at that comment, because after all it's theoretically possible that mass immigration could contribute to a substantial loss of animal populations. If a million people on their way to a new home walk past a particular habitat and each one takes out a member of a species, then, yes, that would reduce and maybe even eliminate its population.

But until I see evidence that mass immigration actually does have a substantial impact on animal populations, I'll still be laughing 99+%.

I think it's safe to say that most human-based extinctions are caused not by immigration, but by stay-at-home people.

Like the ongoing annual bird massacre:

Image
Bird Deaths By Power Source
U.S. News & World Report

As you research kiprobalhato's list, do let us know which species became extinct due to mass immigration:

japanese sea lion

saudi gazelle

pyrenian ibex

wimmer's shrew

baiji

emma's giant rat

kouprey

one striped opossum

dinagat hairy-tailed cloud rat

new zealand greater short tailed bat

golden toad

yunnan lake newt

ainsworth's salamander

gastric brooding frog

javan tiger

bachman's warbler

eskimo curlew

mariana mallard

moho braccatus


maui 'akepa

hooded seedeater

'o'u

dusky seaside sparrow

alaotra grebe



EzraS
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01 Nov 2018, 7:17 pm

Kiprobalhato wrote:
EzraS wrote:
The Japanese sea lion was an aquatic mammal thought to have become extinct in the 1970s. It was considered to be a subspecies...

The Pyrenean ibex, Spanish common name bucardo, Catalan common name herc and French common name bouquetin was one of the four subspecies...

and what was the point in making the distinction?


Because a subspecies can represent a tiny percentage of the entire species. Some subspecies are so rare they barely exist and are the result of a rare mutation or a fluke.



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01 Nov 2018, 7:17 pm

This makes we wonder if there is some master DNA bank with all animal DNA, like the "seed bank".

Image


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JohnPowell
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01 Nov 2018, 7:18 pm

thoughtbeast wrote:
JohnPowell wrote:
That's why we need to do something about mass immigration. The world's population is getting out of control.


I won't laugh 100% at that comment, because after all it's theoretically possible that mass immigration could contribute to a substantial loss of animal populations. If a million people on their way to a new home walk past a particular habitat and each one takes out a member of a species, then, yes, that would reduce and maybe even eliminate its population.

But until I see evidence that mass immigration actually does have a substantial impact on animal populations, I'll still be laughing 99+%.

I think it's safe to say that most human-based extinctions are caused not by immigration, but by stay-at-home people.

Like the ongoing annual bird massacre:

Image
Bird Deaths By Power Source
U.S. News & World Report

As you research kiprobalhato's list, do let us know which species became extinct due to mass immigration:

japanese sea lion

saudi gazelle

pyrenian ibex

wimmer's shrew

baiji

emma's giant rat

kouprey

one striped opossum

dinagat hairy-tailed cloud rat

new zealand greater short tailed bat

golden toad

yunnan lake newt

ainsworth's salamander

gastric brooding frog

javan tiger

bachman's warbler

eskimo curlew

mariana mallard

moho braccatus


maui 'akepa

hooded seedeater

'o'u

dusky seaside sparrow

alaotra grebe



It has a crazy impact. When you flood people in from the third world who live more with nature and then chop trees down and replace fields with concrete and tarmac so you end up building millions and millions of houses, you destroy plenty of nature.

Then you have less room for houses so you start building houses that are more closed in with tiny gardens then you end up working towards the extinction of hedgehogs that trace back millions of years. But best not to think about mass immigration cause it's best not to be called a racist.


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