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Effondrement de la biodiversité / VIe grande extinction

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La moitié des vertébrés a disparu en quarante ans. 27102016 lpr 2016 rapport planete vivante. Study: World's Largest Monarch Population Could Disappear in 20 Years. For Immediate Release, March 21, 2016 Study: World's Largest Monarch Population Could Disappear in 20 Years 84 Percent Decline Driven by Loss of Milkweed Due to Genetically Engineered Crops WASHINGTON— The eastern migratory population of the monarch butterfly — which includes 99 percent of the world’s monarchs — is at high risk of extinction within two decades unless the population rebounds dramatically, according to a new study published today by Nature Scientific Reports.

Study: World's Largest Monarch Population Could Disappear in 20 Years

The study from the U.S. Geological Survey and other scientists predicts an 11 percent to 57 percent chance of extinction for the monarch migration in the next 20 years. These species survived the last ice age but couldn’t survive people. Screw Myers and Briggs.

These species survived the last ice age but couldn’t survive people

I’ve got a new personality test for you. Read the following statement and choose the response that most accurately depicts how it makes you feel: Statement: Ten thousand years ago, 22 species of birds, reptiles, and mammals on the Bahamian island of Abaco miraculously survived the rising seas and shifting climate at the end of the last ice age. Les effectifs d’oiseaux de mer ont chuté de plus de 60 % depuis soixante ans. La sixième extinction de masse a commencé. La sixième extinction animale de masse est en cours.

Selon des experts de trois universités américaines, jamais la planète n'a perdu ses espèces animales à un rythme aussi effréné, depuis l'extinction des dinosaures.

La sixième extinction animale de masse est en cours

Et les humains feront probablement partie des espèces qui disparaîtront. Oxford Junior Dictionary’s replacement of ‘natural’ words with 21st-century terms sparks outcry. The Guardian, January 16, 2015 Oxford Junior Dictionary’s replacement of ‘natural’ words with 21st-century terms sparks outcry By Allison Flood Margaret Atwood and Andrew Motion among authors protesting at dropping definitions of words like ‘acorn’ and ‘buttercup’ in favour of ‘broadband’ and ‘cut and paste’ “A” should be for acorn, “B” for buttercup and “C” for conker, not attachment, blog and chatroom, according to a group of authors including Margaret Atwoodand Andrew Motion who are “profoundly alarmed” about the loss of a slew of words associated with the natural world from the Oxford Junior Dictionary, and their replacement with words “associated with the increasingly interior, solitary childhoods of today”.

Oxford Junior Dictionary’s replacement of ‘natural’ words with 21st-century terms sparks outcry

The likes of almond, blackberry and crocus first made way for analogue, block graph and celebrity in the Oxford Junior Dictionary in 2007, with protests at the time around the loss of a host of religious words such as bishop, saint and sin. Rapport Planète Vivante 2014. Le Rapport Planète Vivante est l'analyse scientifique la plus importante au monde concernant la santé de notre planète et l'impact de l'activité humaine.

Rapport Planète Vivante 2014

Étant conscient que nous n'avons qu'une seule planète, le WWF croit au fait que l'humanité peut faire de meilleurs choix qui peuvent se traduire par de réels gains pour l'écologie, la société et l'économie actuelle, et ce, sur le long terme. Autrement dit, en moins de deux générations, la taille des populations des espèces de vertébrés a fondu de moitié.

Or, les différentes formes du vivant sont à la fois la matrice des écosystèmes permettant la vie sur Terre, mais aussi le baromètre de ce que nous faisons subir à notre planète, notre unique demeure. Nous nous désintéressons de leur sort pour notre propre perte. Ces indicateurs révèlent la demande excessive de l’humanité en ressources planétaires et montrent que nous dilapidons les cadeaux offerts par la nature comme si nous avions plus d’une Terre à notre disposition. Les battements du temps (21) Forest Protection Blog: ECOLOGY SCIENCE: Terrestrial Ecosystem Loss and Biosphere Collapse. Introduction to Planetary Boundaries From Malthus (1798), through Aldo Leopold's land ethic (1949), to The Limits to Growth (Meadows et al. 1972), the Millennium Ecosystem Assessment (2005), and finally current planetary boundary and global change science (Rockström et al. 2009a, 2009b) runs a strand of concern about human growth's impacts upon Earth's biophysical systems – terrestrial ecosystems in particular – and about requirements for global ecological sustainability, while avoiding biosphere collapse.

Forest Protection Blog: ECOLOGY SCIENCE: Terrestrial Ecosystem Loss and Biosphere Collapse

In “The Sixth Extinction,” Elizabeth Kolbert reports from the frontlines of a dying world. The New Yorker writer and acclaimed author Elizabeth Kolbert has a penchant for depressing topics.

In “The Sixth Extinction,” Elizabeth Kolbert reports from the frontlines of a dying world

Her 2006 book, Field Notes from a Catastrophe, helped push climate change into the mainstream (with bonus points for not mincing words in the title). Now that climate change is safely keeping most of us up at night, Kolbert turned her pen to another big bummer: the sixth extinction. We’re currently losing species at a rate of 1,000 to 10,000 times higher than unassisted nature wiping out the occasional newt. While humans weren’t responsible for the last five mass extinctions, our fingerprints are all over this one. Dead elephants, plagues, and rats: Why the sixth extinction is bad for you and everyone you know. Hey, remember the dinosaurs?

Dead elephants, plagues, and rats: Why the sixth extinction is bad for you and everyone you know

Yeah, neither. All it took was one massive asteroid, and all the dinos were wiped off the face of the planet. Well, there’s a new asteroid in town: us. New research published in the journal Science lays out the scope of the destruction we’ve wrought — and suggests that it’s going to come back to bite us. Not only will the so-called sixth extinction make that wildlife safari you’ve always wanted to take a lot less interesting, it could increase disease and make it even harder to feed our own ever-growing population.

Global Ecosystem Collapse. Old-Growth Forests Necessary to Avert Ecosystem CollapseThe global environment is collapsing as human industrial growth overruns ecosystem habitats that make life possible.

Global Ecosystem Collapse

Either we choose now to embrace personal and societal changes necessary for global ecological sustainability, first and foremost stopping the destruction of ecosystems, or we face collapse and the end of being. The meaning of life is radical freedom, sustained ecology, freethinking, truth and justice, and loving all life like kin – so the biosphere, humanity, and all life continue to naturally evolve forever. The global ecological system is collapsing and dying. 5 Massive Animal Die-Offs That Are Probably Our Fault. We’re all familiar with the canary in the coal mine metaphor.

5 Massive Animal Die-Offs That Are Probably Our Fault

Years ago, miners would take a canary to work with them, knowing that if the bird stopped singing (or keeled over dead) danger was imminent. So what does it mean when thousands of animals drop dead while in their natural habitat? Over the past few years, scientists have been alarmed at the acceleration of massive animal die-offs that have occurred around the globe. Le déclin des grands carnivores bouleverse les écosystèmes. Le | • Mis à jour le | Par Pierre Le Hir Ce sont les seigneurs du règne animal. 11 Animals We May Allow To Go Extinct Because They're Not Cute And Fuzzy. In 2012, nearly $1 billion was donated in the name of environmental preservation to just three charities: The Conservation Fund, the World Wildlife Fund and The Nature Conservancy. Where does this money go? Most, according to National Geographic, goes toward protecting a handful of our favorite animals -- apes, elephants, big cats, black rhinos and giant pandas hold the top five spots.

PLOS Research Predicts Climate Change 'Winners' and 'Losers' There's a growing consensus among scientists that the earth is in the midst of its sixth mass extinction. They have in hand voluminous data demonstrating the changing conditions putting 20,000 species of animals and plants around the globe at high risk for disappearing from the wild. From the fossil record we know that such a rapid loss of so many species has previously occurred only five times in the past 540 million years. The last mass extinction, around 65 million years ago, removed dinosaurs from the face of the earth. Despite wins, Minnesota's endangered species list up by 180. The gray wolf, the peregrine falcon, the snapping turtle and 26 other Minnesota plants and animals are healthy enough to come off the state’s list of endangered and threatened species. But 180 species of plants and animals have been added, a reflection of the state’s major environmental problems — from loss of prairies and forests to invasive species and polluted water.

The update of the Minnesota Department of Natural Resources (DNR) list, the first revamp in 17 years, brought to 590 the total number of species that may be endangered or on their way to extinction. Several were removed, including the wolf, bald eagle and trumpeter swan, leading some to say the law is succeeding. But protecting those on the ever-lengthening list will require landscape-size solutions, state wildlife officials said. “We’ve got to learn how to manage at a larger scale,” said Richard Baker, endangered species coordinator for the DNR. The wolf controversy. The Pleistocene-Holocene Event - Sixth Great Extinction.

The Pleistocene-Holocene Event: The Sixth Great Extinction "Soon a millennium will end. With it will pass four billion years of evolutionary exuberance. Yes, some species will survive, particularly the smaller, tenacious ones living in places far too dry and cold for us to farm or graze. Yet we must face the fact that the Cenozoic, the Age of Mammals which has been in retreat since the catastrophic extinctions of the late Pleistocene is over, and that the Anthropozoic or Catastrophozoic has begun. " Gone, But Not Forgotten: Species We've Lost in the Last 10 Years. Les plus anciennes espèces du monde en déclin. Les scientifiques le disent : la dénatalité ou la mort. « Maintenant, c’est plus seulement Pièces et main d’œuvre qui le dit, c’est Nature. » Ainsi parlaient des chercheurs, il y a quelques jours dans les couloirs de la fac d’Orsay. Ils avaient tort. Bien d’autres, depuis des décennies, prophètes de malheur et oiseaux de mauvais augure, annoncent l’effondrement écologique et ses effets catastrophiques pour l’humanité.

Mais pour éveiller l’attention d’universitaires diplômés et des médias, il faut la caution - tardive – de la plus prestigieuse revue scientifique du monde. Deux revues font autorité dans le milieu scientifique mondial. Publier dans Science ou Nature est un triomphe pour les chercheurs. En Amazonie, la plupart des extinctions sont à venir. Nature11018.pdf (Objet application/pdf) La course apparemment irréversible à l'effondrement de la biosphère. Une étude prédit la fin de notre planète avant l'an 2100. Un article de la revue Nature intitulé "Approaching a state-shift in Earth’s biosphere" a fait l'effet d'une petite bombe dans la communauté scientifique en prédisant une fin imminente à notre planète.

Cette fatalité aurait lieu d'ici l'année 2100 et serait due à l'emballement des changements radicaux des écosystèmes et du climat de la Terre. Une étude de la Simon Fraser University (SFU) de Vancouver publiée dans la revue Nature montrerait qu'un effondrement total de la planète se produirait d'ici la fin du siècle. Biodiversité en danger. Un mammifère américain sur dix ne survivra pas au changement climatique. Adieu bisons, lamas et caribous? Les mammifères qui peuplent le continent américain pourraient avoir du mal à s’adapter au changement climatique, selon une étude parue le 14 mai dans Proceedings of the National Academy of Sciences.

Un mammifère sur dix, et dans certaines régions quatre sur dix, pourraient disparaître faute de se déplacer assez rapidement pour trouver de nouveaux habitats correspondant à leurs besoins. 07/03 > BE Canada 407 > Une étude prédit un effondrement planétaire irréversible imminent. Nearly one tenth of hemisphere's mammals unlikely to outrun climate change. A safe haven could be out of reach for 9 percent of the Western Hemisphere's mammals, and as much as 40 percent in certain regions, because the animals just won't move swiftly enough to outpace climate change.

For the past decade scientists have outlined new areas suitable for mammals likely to be displaced as climate change first makes their current habitat inhospitable, then unlivable. For the first time a new study considers whether mammals will actually be able to move to those new areas before they are overrun by climate change. Carrie Schloss, University of Washington research analyst in environmental and forest sciences, is lead author of the paper out online the week of May 14 in the Proceedings of the National Academy of Sciences. Earth Blog: EARTH MEANDERS: U.S. Abrupt Climate Change 2012: Where Will You Be the Day Earth’s Death Became Unavoidable? The world’s and especially America’s environment has gone mad during the summer of 2012. Abrupt climate change is clearly upon us, and life-giving ecosystems are visibly failing, portending doom for our shared biosphere, all life, and humanity.

Biodiversity: Great Barrier reef has lost half its coral cover. Outbreaks of the coral eating crown of thorns starfish have been responsible for 42 percent of the over 50 percent decline in coral cover on the Great Barrier Reef between 1985 and 2012. Photo courtesy Katharina Fabricius, Australian Institute of Marine Science. Multiple short-interval disturbances causing long-term decline, with southern areas hit hardest By Summit Voice SUMMIT COUNTY — Australian researchers say the Great Barrier Reef has lost half its coral cover in the past 27 years, with more impacts expected as the climate warms in coming decades. Humanité et Biodiversité - La communauté des adhérents et sympathisants de l'association "Humanité et Biodiversité" En 40 ans, la moitié des animaux sauvages a disparu à cause de l'homme, selon le WWF. Publié tous les deux ans, le Living Planet Report du WWF livre des chiffres effarants.

Ainsi, la population de vertébrés sauvages aurait baissé de 52% entre 1970 et 2010. Plus de 10.000 espèces ont été étudiées pour obtenir ce triste chiffre. 20 Surprising Animals You Didn't Know Are Going Extinct.