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sixth mass extinction event

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    Posted: July 11 2017 at 7:46am
Earth has entered into a sixth mass extinction event

Animal populations across the planet have decreased by as much as 80 per cent since 1900 - an event akin to "biological annihilation". The consequences for humans could be severe

Lions used to roam across most of Africa, southern Europe, and the Middle East, all the way to northwestern India. Today, there are fewer than 25,000 lions left in the wild, down from an estimated 400,000 in 1950. They cling to life in the confines of Sub-Saharan Africa, and the wilds of India's Gir forest. The vast majority of the lion population are gone - and their decline is thought to be but one part of a mass extinction event.


Between 1900 and 2015, nearly half of 177 surveyed mammal species lost more than 80 per cent of their distribution. Billions of populations of mammals, birds, reptiles and amphibians have been lost all over the planet, prompting scientists to suggest we have now entered a sixth mass extinction akin to a "biological annihilation".
Professor Gerardo Ceballos, at the Universidad Nacional Autónoma de México, says that now, "the extinction of mammal populations, although varying from species to species, [is] a global phenomenon".

His work, published in the journal Proceedings of the National Academy of Science, tracks the significant rate of mammalian extinction across the Earth - describing it as a “frightening assault on the foundations of human civilisation”.

In Earth's history, there have been five mass extinction events. The last, during the Cretaceous–Paleogene period, brought an end to the dinosaurs. A combination of volcanic activity and asteroid impacts resulted in the loss of 75 per cent of life on the planet, 65 million years ago. In the 21st Century, with anthropogenic changes to the climate and landscape of the world, a sixth extinction event could be on the horizon.

Large regions in all continents have lost 50 per cent or more of the populations of the evaluated mammals from 1900 to 2015. While the small sample size only covers 177 species, and is biased to larger mammals, this figure can be used to visualise likely trends in global population losses. Assuming that on average each of the 10,000km2 occupied quadrats studied held a single population of the species found within it, Ceballos estimates that roughly 58,000 populations of the 177 mammals examined have gone extinct.
"Earth is now in a period of mass global species extinction for vertebrate animals," Ceballos says, "but the true extent of this mass extinction has been underestimated".

This underestimation in the level of vertebrate extinction has been linked to the largely overlooked area of studying population shrinkage as opposed to solely species extinction. By focusing on this area, Ceballos doesn't wait until the species has disappeared, but tracks their current changes in population across the world - a method that outlines an overall trend of species decline.

This method has limitations - namely the difficulty in ascertaining the actual average area occupied by a vertebrate population. But even using conservative estimates for smaller species, such as mammals, birds, reptiles, and amphibians, one population every 10km2 would result in hundreds of thousands of population extinctions over a few centuries. Moreover, population extinctions are preludes to larger species extinction.

Regions exhibiting higher concentrations of species and population decline show a strong correspondence to an intertropical peak, roughly between the Tropics of Cancer and Capricorn. Areas of most devastating loss occur across the African continent, as well as India and Australia - but are prevalent around the globe.

Ceballos' study shows that creatures of all shapes and sizes, both vertebrates and invertebrates, are found to be in states of decline. In the UK, long-term monitoring of insect populations shows that 30 to 60 per cent of species have contracting ranges. The significance of this species loss cannot be understated.

Records covering 4,424 species, collected between 1970 and 2009 by the Centre for Ecology and Hydrology found losses across the UK. Of pollinators such as bees, moths and hoverflies, 28 per cent are in decline. Pest controllers such as ants have seen a 16 per cent loss.

Tom Oliver, an ecologist at the University of Reading who led this study, told the Guardian the consequences of losing wildlife would have stark repercussions on food production and our national ecosystem.

“We need insects to pollinate our crops – we can’t do it by hand – and if we lose natural pest controls, less food will be available. If we lose those functions, the crops we eat won’t be able to be pollinated so the price of food would go hugely up and certain foods we wouldn’t be able to eat such as fruits including strawberries, raspberries and apples.”

Furthermore, slight changes in the ecosystem could drastically affect our ability to maintain arable land, with the diversity of tree and plant species also in decline.

Ceballos' research is not alone in indicating an extinction level threat to biodiversity. 60 per cent of primate species - our closest biological relatives - are now threatened with extinction. Globally, 75 per cent have declining populations. Primates offer critical insights into human evolution, biology, and behaviour, yet it is the anthropogenic activity that is threatening their survival.

Forest loss resulting from regional and global economic pressures, the impacts of hunting, illegal trade, and other anthropogenic threats on global animal populations have led to sustained habitat loss and changes to many ecosystems, from Australia's coral reefs to the Amazonian rainforest.

The likelihood of Earth's extinction lies in the causes of population extinctions, Ceballo says. Rapid loss of animals across the globe and comparable losses in the diversity of plants, indicate a co-extinction of plants. Plants, vital sources of food, medicine and central absorbers of atmospheric CO2, are key to human life. Without them, an extinction level event for humans grows likely

"Habitat conversion, climate disruption, overexploitation, toxification, species invasions, disease, and (potentially) large-scale nuclear war — all tied to one another in complex patterns and usually reinforcing each other’s impacts," Ceballo says. "Much less frequently mentioned are, however, the ultimate drivers of those immediate causes of biotic destruction, namely, human overpopulation and continued population growth, and over-consumption, especially by the rich."

At a glance, Ceballo's research presents a dark, but conservative insight into global biodiversity. It suggests that as much as 50 per cent of the number of animals that once shared Earth with us are already gone. Given the increasing trajectories of the drivers of extinction, the window for action to move towards a sustainable future is slowly closing.

"The sixth mass extinction is already here and the window for effective action is very short," Ceballo says, "probably two or three decades at most. All signs point to ever more powerful assaults on biodiversity in the next two decades, painting a dismal picture of the future of life, including human life."





http://www.wired.co.uk/article/sixth-mass-extinction-humans-animals-conservation

http://www.pnas.org/content/early/2017/07/05/1704949114
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jacksdad Quote  Post ReplyReply Direct Link To This Post Posted: July 11 2017 at 9:49am
Lucky we have an administration that cares...


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"Any community that fails to prepare, with the expectation that the federal government will come to the rescue, will be tragically wrong." Michael Leavitt, HHS Secretary.
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Technophobe Quote  Post ReplyReply Direct Link To This Post Posted: July 11 2017 at 11:01am
Yep! Clown
Absence of proof is not proof of absence.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jacksdad Quote  Post ReplyReply Direct Link To This Post Posted: July 11 2017 at 12:04pm
I'd laugh, but, you know... Angry


"Buy it cheap. Stack it deep"
"Any community that fails to prepare, with the expectation that the federal government will come to the rescue, will be tragically wrong." Michael Leavitt, HHS Secretary.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbon20 Quote  Post ReplyReply Direct Link To This Post Posted: July 11 2017 at 2:59pm
i worry for my Grandkids..............Unhappy
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jacksdad Quote  Post ReplyReply Direct Link To This Post Posted: July 11 2017 at 10:34pm
I worry for our kids, carbon.



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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dutch Josh Quote  Post ReplyReply Direct Link To This Post Posted: July 11 2017 at 11:31pm
[url]https://www.youtube.com/watch?v=pfDxT7sjCFQ[//url] Paul Beckwith is one of many scientists who has been warning of the effects climate change has on life on earth for years. In 2006 came https://www.algore.com/library/an-inconvenient-truth-dvd. But warnings for climatechange go back to 1847 ! 

The sixth mass extinction is happening NOW ! Not in the IPCC 2100 scenario, not a problem for when (grand)children are grown-ups, but we are already in the middle of it !

https://www.facebook.com/JoseBarbaNueva?fref=nf&pnref=story Joe Neubarth is following (a.o.) the methane release in the Arctic. Water vapor and methane are driving the abrupt climate change we are in now. 

http://arctic-news.blogspot.nl/2017/05/abrupt-warming-how-much-and-how-fast.html Sam Carana comes with his calculations of over 10 degrees Celsius temperature rise in the coming 10 years. Both Joe Neubarth and Sam Carana (and many others, Guy McPherson etc) have a very good story in wich they warn that humans may have only a few years left. 

I am not a scientist. But I do think radical changes MUST be made NOW ! Maybe those changes can slow down climate change enough to buy us time to avoid "end of live". 

I expect mass media will be confronted with stories off floodings, wildfires, extreme heat, food crisis etc. more and more and more. Even trump will wake up one day to see there is a very big problem. 


Que sera, sera, Whatever will be, will be, The future is not ours to see, Que sera, sera !
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Satori Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 1:01am

EPA chief wants his useless climate change 'debate' televised, and I need a drink


https://www.yahoo.com/news/epa-chief-wants-useless-climate-224316151.html


Trump=the WRONG person ,at the WRONG time,in the WRONG job


let him go back to cheating carpenters,painters and carpet layers and taking Russian mob money


he may very well have SEALED our fate

“The point of modern propaganda isn’t only to misinform or push an agenda. It is to exhaust your critical thinking, to annihilate truth.” Gary Kasparov
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Technophobe Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 3:15am
JD, Carbon - I worry for me. Exclamation
Absence of proof is not proof of absence.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dutch Josh Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 3:21am
https://www.nytimes.com/interactive/2017/05/18/climate/antarctica-ice-melt-climate-change.html


The sixth-mas-extinction-event is NOW and HERE. It should be the main news-top priority. 

What amazes me most that it is not top news. We have ruined our only planet and are making selfies of it; are we all crazy ?
Que sera, sera, Whatever will be, will be, The future is not ours to see, Que sera, sera !
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Technophobe Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 3:55am
Absence of proof is not proof of absence.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dutch Josh Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 5:08am
https://robertscribbler.com/2017/07/11/antarcticas-4th-largest-ice-shelf-is-about-to-melt-back-to-its-smallest-area-ever-recorded/ with good info in the comments. 

On the Guardian article; I understand mass-media do not want to be blamed for creating mass-panic. But (Ant)Arctic ice melting on this scale is a gigantic problem.

Que sera, sera, Whatever will be, will be, The future is not ours to see, Que sera, sera !
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Post Options Post Options   Thanks (0) Thanks(0)   Quote arirish Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 8:48am
Giant iceberg splits from Antarctic

One of the biggest icebergs ever recorded has just broken away from Antarctica.

The giant block is estimated to cover an area of roughly 6,000 sq km; that's about a quarter the size of Wales.

An US satellite observed the berg on Wednesday while passing over a region known as the Larsen C Ice Shelf.

Scientists were expecting it. They'd been following the development of a large crack in Larsen's ice for more than a decade.

The rift's propagation had accelerated since 2014, making an imminent calving ever more likely.




The more than 200m-thick tabular berg will not move very far, very fast in the short term. But it will need to be monitored. Currents and winds might eventually push it north of the Antarctic where it could become a hazard to shipping.

An infrared sensor on the American space agency's Aqua satellite spied clear water in the rift between the shelf and the berg on Wednesday. The water is warmer relative to the surrounding ice and air - both of which are sub-zero.

"The rift was barely visible in these data in recent weeks, but the signature is so clear now that it must have opened considerably along its whole length," explained Prof Adrian Luckman, whose Project Midas at Swansea University has followed the berg's evolution most closely.

The event was confirmed by other spacecraft such as Europe's Sentinel-1 satellite-radar system.

http://www.bbc.com/news/science-environment-40321674
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Post Options Post Options   Thanks (0) Thanks(0)   Quote arirish Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 8:56am
A planet devastated by climate change may seem like a distant future. But Earth is already experiencing the effects of rising global temperatures today.

Worldwide, the mean rate of sea level rise increased 50% in the last two decades. In 2017, temperatures have already reached their highest levels in history in some areas, from California to Vietnam. The past three years were the hottest on record.

These changes are caused by increasing levels of carbon dioxide and methane in the Earth's atmosphere, a product of human activity. And as New York Magazine's David Wallace-Wells recently noted, no single emissions reduction program we have today is enough to prevent climate disaster — not even the Paris agreement.

Even if every signatory country in the accord meets its current pledge for reducing emissions — including the US, though Trump has pledged to pull the country out of the agreement — the world is still projected to warm over 2 degrees Celsius by 2050. The Paris agreement points out this reality in a section titled, "Notes with concern."

Two degrees may not seem like much, but the rise would have substantial impacts. Scientists say that places that supply the world's food, including Southern Europe and much of the Middle East, Australia, Africa, South America, and China, would be in permanent, extreme drought by 2080. Flooding would become a serious issue near the coasts, where a third of the world's major cities are located, since sea levels are projected to rise by at least 10 feet by the end of the century.


Even if every country on the planet cuts emissions, the climate would still be screwed
Experts also warn that if the Arctic ice continues to melt, ancient diseases trapped in glaciers could get released. Plus, the world would face the extinction of many animal species and rising human mortality.

The planet has already warmed nearly 1 degree Celsius, and James Hansen, a renowned climate scientist at Columbia University, suggested in a recent paper that keeping global warming below 1.5 degrees is nearly impossible. Hansen suggested that hitting the goal would require negative emissions levels, which would mean capturing carbon and taking it out of the atmosphere.

To make matters worse, our best protection against the effects of rising carbon dioxide levels comes from so-called "carbon sinks" — patches of land and ocean that absorb large chunks of the carbon dioxide we pump into the atmosphere. But now those sinks may be at capacity, prompting the Earth to continue cooking even as emissions get curbed.

In a recent open letter, six prominent scientists and diplomats, including former UN climate chief Christiana Figueres and physicist Stefan Rahmstorf, wrote that the world has approximately three years before the worst effects of climate change take hold.

Published June 28, the letter urges governments, businesses, scientists, and citizens to address the world's greenhouse-gas emissions now. If emissions can be permanently lowered by 2020, they wrote, global temperatures will likely avoid reaching that irreversible threshold.

In the letter, the scientists propose six goals to hit by 2020:
• Increase renewable energy to 30% of electricity use.
• Draft plans for cities and states to ditch fossil fuel energy by 2050, with funding of $300 billion annually.
• Ensure 15% of all new vehicles sold are electric.
• Cut net emissions from deforestation.
• Publish plan for halving emissions from deforestation well before 2050.
• Encourage the financial sector to issue more "green bonds" toward climate-mitigation efforts.

But those aims are at odds with the priorities of the Trump administration, which has signaled that climate change mitigation is not on its agenda. Because of that conflict, the authors call for US cities and businesses to fight emissions and meet the Paris accord goals without the help of the federal government.

"We stand at the doorway of being able to bend the emissions curve downwards by 2020, as science demands, in protection of the UN sustainable development goals, and in particular the eradication of extreme poverty," Figueres said in a press release.

"This monumental challenge coincides with an unprecedented openness to self-challenge on the part of sub-national governments inside the US, governments at all levels outside the US, and of the private sector in general. The opportunity given to us over the next three years is unique in history."

Wallace-Wells emphasized in his recent New York Magazine piece that an enormous effort from the world's governments and citizens is crucial for staving off the worst effects of climate change. Whether the world will succeed in addressing emissions in a serious way, however, remains to be seen.


http://www.businessinsider.com/emissions-cuts-not-enough-climate-change-2017-7
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Satori Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 9:51am
plenty of VERY dire predictions from people like McPherson and associates

one thing I am watching closely is food production

when you see falling production of the major grains eg. corn,wheat and rice
then it is past time to hit the panic button

McPherson predicts the end of humanity within 10 years or so
IF true
we're not going to get to year 9,day 364 and then the next day 7 billion people suddenly drop dead

LONG before that happens a LOT of very bad stuff has to happen
the dieoff  as predicted by McPherson is going to be gradual
culminating in eventual extinction

WATCH FOOD PRODUCTION
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Extreme Weather Takes A Toll On Wheat Harvests. Climate Change Will Make It Worse.

http://www.huffingtonpost.com/entry/climate-change-wheat_us_59663fece4b03f144e2fc6ff?ncid=inblnkushpmg00000009


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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbon20 Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 2:29pm
Climate change is the biggest challage Mankind has ever  faced,

and most dont believe its Happening RIGHT NOW before our eyes,

when Koyoto agreement signed i thought "HOW DO I REDUCE MY CARBON USAGE BY 50%"

answer stay at home 3 1/2 days a week and do nothing not even turn a light on ,cook,flush Lavatory

this is the reality,well as i see it 

so we screwed..........
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Diligent Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 5:09pm
Just keep an eye on Fukushima because it is still a very bad situation.

Diligent


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Pruitt blasts Europe, Merkel for ‘hypocrisy’ on climate

http://www.politico.com/story/2017/07/12/pruitt-climate-hypocrisy-merkel-europe-240479


MORE fail on the part of the Trump administration


big surpriseDead

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dutch Josh Quote  Post ReplyReply Direct Link To This Post Posted: July 12 2017 at 10:54pm
Another story: http://www.newsprepper.com/warning-california-volcano-ready-blow-lond-valley-volcano-scientists-warning/ and http://www.newsprepper.com/breaking-russian-researchers-warn-megaquake-will-rip-america/

A series of very large quakes/volcanic eruptions in "the wrong place" (Japan, California a.o.) could do so much damage the global economy could collapse. 

Most scientists did not expect the 2011 M9 Japan quake to be possible. An M10 quake may be possible every 100/400 years according to some models. https://earthscience.stackexchange.com/questions/875/are-richter-magnitude-10-earthquakes-possible.

Supervolcanos and mega-quakes DO mix. Climate change is a very major problem but "violent earth" can cause the sixth mass extinction, meteoritesstrike can. A global civil war can do so much damage humans will not survive it. (The 30 year war 1618-1648 killed 30% of the German population, the Korean war 1950-53 did see 15% of North Koreans killed. Even in Roman times wars could do so much damage that vast areas of land became unliveble due to lack of watersupplies, infrastructure.)
Que sera, sera, Whatever will be, will be, The future is not ours to see, Que sera, sera !
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