Humans and our livestock and Pets are now 97% of land mammals

check it  here:   /mass_of_humans_vs_wild_animals_is_xkcd_correct/

Today wildlife accounts for only 3 percent of earth’s land mammals

…..”Our destruction is so familiar—so synonymous with civilization—in fact, that we tend to overlook how strange the world that we’ve made has become. For instance, it stands to reason that, until very recently, all vertebrate life on the planet was wildlife.

But astoundingly, today wildlife accounts for only 3 percent of earth’s land animals; human beings, our livestock, and our pets take up the remaining 97 percent of the biomass.

This Frankenstein biosphere is due both to the explosion of industrial agriculture and to a hollowing out of wildlife itself, which has decreased in abundance by as much as 50 percent since 1970. This cull is from both direct hunting and global-scale habitat destruction: almost half of the earth’s land has been converted to farmland.

The oceans have endured a similar transformation in only the past few decades as the industrial might developed during World War II has been trained on the seas. Each year fishing trawlers plow an area of seafloor twice the size of the continental United States, obliterating the benthos.

Gardens of corals and sponges hosting colorful sea life are reduced to furrowed, lifeless plains. What these trawlers have to show for all this destruction is the removal of up to 90 percent of all large ocean predators since 1950, including familiar staples of the dinner plate like cod, halibut, grouper, tuna, swordfish, marlin, and sharks.

As just one slice of that devastation, 270,000 sharks are killed every single day,mostly for their tasteless fins, which end up as status symbol garnishes in the bowls of Chinese corporate power lunches.

And today, even as fishing pressure is escalating, even as the number of fishing boats increases, even as industrial trawlers abandon their exhausted traditional fishing grounds to chase down ever more remote fish stocks with ever more sophisticated fish-finding technology, global fish catch is flatlining.

Closer to shore, coral reefs, the wellspring of the ocean’s biodiversity, have declined in extent by as much as a third since only the 1980s.These paradises are plagued by overfishing, pollution, and invaders, but 500 million people, many of them poor and living in the developing world, rely on them for food, storm protection, and jobs.

As in the handful of reef collapses of the geological past, modern reefs are expected to collapse from warming and ocean acidification by the end of the century, and possibly much sooner.During record-breaking temperatures in 1997–1998, 15 percent of the world’s reefs died. In the past few months a similar wave of death struck the Great Barrier Reef. It won’t be the last.

So things don’t look so good, no matter where we look. Yes, the victims in the animal world include scary apex predators that pose obvious threats to humans, like lions, whose numbers have dropped from 1 million at the time of Jesus to 450,000 in the 1940s to 20,000 today—a decline of 98 percent.

But also included have been unexpected victims, like butterflies and moths, which have declined in abundance by 35 percent since the 1970s….…When mass extinctions hit, they don’t just take out big charismatic megafauna, like elephants, or niche ecosystems, like cloud forests.They take out hardy and ubiquitous organisms as well—things like clams and plants and insects.

This is incredibly hard to do. But once you go over the edge and flip into mass extinction mode, nothing is safe. Mass extinctions kill almost everything on the planet”…..Source..shared from The Atlantic with thanks

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Introduction to Rewilding ..  byKara Moses

Everyone is talking about rewilding at the moment. The debate around it is shaking up the conservation sector and public interest in it is huge, with a growing movement of people advocating the restoration of our degraded ecosystems. But what does it really mean to rewild? And how would you go about doing it if you actually have some land?

You Don’t Need a Scientist to Know What’s Causing the Sixth Mass Extinction

Paul R. Ehrlich– It’s simple. It’s us. The more people there are, the more habitats we destroy. Human civilisation can only survive if the population begins to shrink

“One should not need to be a scientist to know that human population growth and the accompanying increase in human consumption are the root cause of the sixth mass extinction we’re currently seeing. All you need to know is that every living being has evolved to have a set of habitat requirements.

“An organism can’t live where the temperature is too hot or too cold. If it lives in water, it requires not only an appropriate temperature range, but also appropriate salinity, acidity and other chemical characteristics. If it is a butterfly, it must have access to plants suitable for its caterpillars to eat.

A lion requires plant-eaters to catch and devour. A tree needs a certain amount of sunlight and access to soil nutrients and water. A falciparum malaria parasite can’t survive and reproduce without Anopheles mosquitos in its habitat and a human bloodstream to infest.

“The human population has grown so large that roughly 40% of the Earth’s land surface is now farmed to feed people – and none too well at that. Largely due to persistent problems with distribution, almost 800 million people go to bed hungry, and between one and two billion suffer from malnutrition.

As a consequence of its booming population, Homo sapiens has taken much of the most fertile land to grow plants for its own consumption. But guess what? That cropland is generally not rich in food plants suitable for the caterpillars of the 15,000 butterfly species with which we share the planet. Few butterflies require the wheat, corn or rice on which humans largely depend.

From the viewpoint of most of the Earth’s wildlife, farming can be viewed as “habitat destruction”. And, unsurprisingly, few species of wildlife have evolved to live on highways, or in strip malls, office buildings, kitchens or sewers – unless you count Norway rats, house mice, European starlings and German roaches.

Virtually everything humanity constructs provides an example of habitat destruction.” (https://www.theguardian.com/commentisfree/2017/jul/11/sixth-mass-extinction-habitats-destroy-population.)

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