World Scientists Warning to Humanity

Scientists Warn of Global Dangers

Tomorrow is World Population Day. A good day to take note of the warnings coming from the world’s scientists.
“Humanity is on a collision course with Nature.
A damaged Nature will survive. We may not.
We must change course to avert an ecological disaster.”
Twenty-five years ago, 1700 scientists published a warning and recommendations for controlling environmental pollution and population growth. Except for global efforts to curtail ozone emissions, the warning had no effect. Last fall, more than 20,000 scientists issued a new warning urging efforts to change our disastrous path toward global ecosystem devastation. If you agree that action is needed, please sign up to show support. Scientists, other individuals, businesses, and organizations sign here: http://www.scientistswarning.org/please-sign.

You can read the article here: http://scientistswarning.forestry.oregonstate.edu.  You can also download the PDF file here:  Warning_article_with_supp_11-13-17.

Livestock and Humans Have Replaced Most Wild Animals

GR: In this study, the investigators analyzed global biomass, a common measure of animal and plant abundance, to estimate changes in the abundance of organisms. They found that humans and livestock account for 96% of all vertebrates on Earth. Previous global estimates have used numbers, not biomass, to estimate abundance. The results agree, but the new study was able to extend estimates farther back in history. Both approaches conclude that more than half of all animals have been lost since 1970. The investigators in the new study found that since human civilisation arose, 83% of wild mammals have disappeared.

The Guardian added excellent graphics to illustrate the research findings.  Highly recommended!

A cattle feedlot in Mato Grosso, Brazil. 60% of all mammals on Earth are livestock. Photograph: Daniel Beltra, Greenpeace

“Humankind is revealed as simultaneously insignificant and utterly dominant in the grand scheme of life on Earth by a groundbreaking new assessment of all life on the planet.

“The world’s 7.6 billion people represent just 0.01% of all living things, according to the study. Yet since the dawn of civilisation, humanity has caused the loss of 83% of all wild mammals and half of plants, while livestock kept by humans abounds.

“The new work is the first comprehensive estimate of the weight of every class of living creature and overturns some long-held assumptions. Bacteria are indeed a major life form – 13% of everything – but plants overshadow everything, representing 82% of all living matter. All other creatures, from insects to fungi, to fish and animals, make up just 5% of the world’s biomass.

“Another surprise is that the teeming life revealed in the oceans by the recent BBC television series Blue Planet II turns out to represent just 1% of all biomass. The vast majority of life is land-based and a large chunk – an eighth – is bacteria buried deep below the surface.

“I was shocked to find there wasn’t already a comprehensive, holistic estimate of all the different components of biomass,” said Prof Ron Milo, at the Weizmann Institute of Science in Israel, who led the work, published in the Proceedings of the National Academy of Sciences.

“I would hope this gives people a perspective on the very dominant role that humanity now plays on Earth,” he said, adding that he now chooses to eat less meat due to the huge environmental impact of livestock” –Damian Carrington, The Guardian.

 

Disappearing Wildlife and Nature Conservation

GR: This is an urgent message that everyone should receive: We must act to stop the global deterioration and loss of forests, shrublands, grasslands, soil, and wildlife. Human activities–plowing the land, cutting the forests, grazing the grassland, warming the air, and exposing soil to wind and water erosion–are destroying our planetary life-sustaining ecosystems. Over the 40-year period to 2012, more than half the animals on Earth disappeared. Unless we make an immediate and powerful response, vegetation and soil losses will continue until they strip the planet’s surface bare. Without soil, much of the Earth will become as lifeless as the moon. Barren and silent but for whispering wind, pockets of weeds, clouds of wildfire smoke, and the distant cries of a few remaining animals.

Bessie Parker farm, Leon, Iowa. The erosion in these fields has reduced the value of the farm to the point where all but 40 acres have been taken over for taxes. Erosion has not stopped. Cattle grazing and sporadic hay mowing will continue to expose soil (photo: public domain, U. S. National Archives).

The source of the information on wildlife decline is the World Wildlife Fund: “Global biodiversity is declining at an alarming rate, putting the survival of other species and our own future at risk. The latest edition of WWF’s Living Planet Report brings home the enormity of the situation – and how we can start to put it right. The Living Planet Index reveals that global populations of fish, birds, mammals, amphibians and reptiles declined by 58 per cent between 1970 and 2012. We could witness a two-thirds decline in the half-century from 1970 to 2020 . . .”

Without soil, there will be no farms, freshwater will runoff to the sea, vegetation will disappear, and wildlife will die (photo © Kelly Sillaste / Getty Images / WWF).

Wildlife decline: Living Planet Report 2016 | WWF

The Global Solution to Extinction – The New York Times

GR:  In this article, E. O. Wilson gives numerical estimates of the relationship between the protected area of the Earth’s surface and the number of wildlife species saved. Wilson’s estimates are probably very conservative. They probably do not include predicted impacts of global warming.

We have to respond. One thing we can all do is insure that Progressives sweep the upcoming elections. We need them to guide the U. S. and other countries to take action for nature conservation of the drastic intensity needed to protect nature and insure that human civilization can continue to advance.

“DURING the summer of 1940, I was an 11-year-old living with my family in a low-income apartment in Washington, D.C. We were within easy walking distance of the National Zoo and an adjacent strip of woodland in Rock Creek Park. I lived most of my days there, visiting exotic animals and collecting butterflies and other insects with a net that I had fashioned from a broom handle, coat hanger and cheesecloth. I read nature books, field guides and past volumes of National Geographic. I had already conceived then of a world of life awaiting me, bottomless in variety.

“Seventy-six years later, I have kept that dream. As a teacher and scientist I have tried to share it. The metaphor I offer for biological diversity is the magic well: The more you draw, the more there is to draw.

“But today the dream is at risk. Civilization is at last turning green, albeit only pale green. Our attention remains focused on the physical environment — on pollution, the shortage of fresh water, the shrinkage of arable land and, of course, the great, wrathful demon that threatens all our lives, human-forced climate change. But Earth’s living environment, including all its species and all the ecosystems they compose, has continued to receive relatively little attention. This is a huge strategic mistake. If we save the living environment of Earth, we will also save the physical, nonliving environment, because each depends on the other. But if we work to save only the physical environment, as we seem bent on doing, we will lose them both.

“So, what exactly is the current condition of the living environment, in particular its biological diversity and stability? How are we handling this critical element of Earth’s sustainability?

“With data on the best known vertebrate species, and a lot of additional information from fossil studies and genetics, we can put the fraction of species disappearing each year at upward of a 1,000 times the rate that existed before the coming of humans.

“Most of this loss is occurring in tropical countries, and especially tropical forests on islands. But to bring it home to the United States, consider that from 1895 to 2006, 57 species and distinct geographic races of freshwater fishes were driven to extinction, which is 10 percent of the total previously alive; hence the rate of extinction was just under 900 times that which existed before the coming of humans.” — E. O. Wilson, New York Times.

 

GR: Visit the Times article to see the chart showing the numerical relationship between land preserved and species saved.