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Category: Ecology

Rapid warming caused largest extinction event ever on Earth, report says

Rapid warming caused largest extinction event ever on Earth, report says

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The Guardian reports: Rapid global warming caused the largest extinction event in the Earth’s history, which wiped out the vast majority of marine and terrestrial animals on the planet, scientists have found. The mass extinction, known as the “great dying”, occurred around 252m years ago and marked the end of the Permian geologic period. The study of sediments and fossilized creatures show the event was the single greatest calamity ever to befall life on Earth, eclipsing even the extinction of…

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Portrait of the Earth at the threshold of climate catastrophe

Portrait of the Earth at the threshold of climate catastrophe

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The Guardian reports: On Sunday morning hundreds of politicians, government officials and scientists will gather in the grandeur of the International Congress Centre in Katowice, Poland. It will be a familiar experience for many. For 24 years the annual UN climate conference has served up a reliable diet of rhetoric, backroom talks and dramatic last-minute deals aimed at halting global warming. But this year’s will be a grimmer affair – by far. As recent reports have made clear, the world…

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The insect apocalypse is here. What does it mean for the rest of life on Earth?

The insect apocalypse is here. What does it mean for the rest of life on Earth?

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Brooke Jarvis reports: Sune Boye Riis was on a bike ride with his youngest son, enjoying the sun slanting over the fields and woodlands near their home north of Copenhagen, when it suddenly occurred to him that something about the experience was amiss. Specifically, something was missing. It was summer. He was out in the country, moving fast. But strangely, he wasn’t eating any bugs. For a moment, Riis was transported to his childhood on the Danish island of Lolland,…

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The health of an ecosystem (including your home) depends on its biodiversity

The health of an ecosystem (including your home) depends on its biodiversity

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William Foster writes: Rob Dunn invites us on a safari in pursuit of the wildlife teeming on our bodies and in every corner of our homes. For him, the creatures that sprawl in the human navel and under the bathroom shower head elicit the kind of wonder most of us would feel only on seeing the denizens of Tanzania’s Ngorongoro Crater or the Great Barrier Reef off Australia. Dunn is more than an informed and entertaining commentator, a David Attenborough…

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Stop biodiversity loss or we could face our own extinction, warns UN

Stop biodiversity loss or we could face our own extinction, warns UN

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The Guardian reports: The world must thrash out a new deal for nature in the next two years or humanity could be the first species to document our own extinction, warns the United Nation’s biodiversity chief. Ahead of a key international conference to discuss the collapse of ecosystems, Cristiana Pașca Palmer said people in all countries need to put pressure on their governments to draw up ambitious global targets by 2020 to protect the insects, birds, plants and mammals that…

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Humanity’s preoccupation with short-term gains threatens the future of life on Earth

Humanity’s preoccupation with short-term gains threatens the future of life on Earth

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Jane Goodall writes: We are experiencing the sixth great extinction. The most recent report from WWF describes the situation as critical – in the last 40 years, we have lost some 60% of all animal and plant species on Earth. We are poisoning the soil through large-scale industrial agriculture. Invasive species are choking out native animal and plant life in many places. Carbon dioxide is released into the atmosphere by our reliance on fossil fuels, destruction of the rain forests…

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Call to protect dwindling wilderness ‘before it disappears forever’

Call to protect dwindling wilderness ‘before it disappears forever’

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Mongabay reports: New, highly detailed maps now reveal the state of the world’s wilderness, both on land and at sea, and the picture looks bleak. In a series of recent studies, a group of researchers led by ecologist James Watson of the Wildlife Conservation Society and Australia’s University of Queensland analyzed the surface of Earth for significant human activity, such as roads and railways, pastures and farmland, and population centers, at a resolution of 1 square kilometer (0.4 square miles)….

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Humanity is destroying life on Earth

Humanity is destroying life on Earth

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  The Guardian reports: Humanity has wiped out 60% of mammals, birds, fish and reptiles since 1970, leading the world’s foremost experts to warn that the annihilation of wildlife is now an emergency that threatens civilisation. The new estimate of the massacre of wildlife is made in a major report produced by WWF and involving 59 scientists from across the globe. It finds that the vast and growing consumption of food and resources by the global population is destroying the…

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Humanity is ‘cutting down the tree of life’, warn scientists

Humanity is ‘cutting down the tree of life’, warn scientists

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The Guardian reports: Humanity’s ongoing annihilation of wildlife is cutting down the tree of life, including the branch we are sitting on, according to a stark new analysis. More than 300 different mammal species have been eradicated by human activities. The new research calculates the total unique evolutionary history that has been lost as a result at a startling 2.5bn years. Furthermore, even if the destruction of wild areas, poaching and pollution were ended within 50 years and extinction rates…

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‘Hyperalarming’ study shows massive insect loss

‘Hyperalarming’ study shows massive insect loss

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The Washington Post reports: Insects around the world are in a crisis, according to a small but growing number of long-term studies showing dramatic declines in invertebrate populations. A new report suggests that the problem is more widespread than scientists realized. Huge numbers of bugs have been lost in a pristine national forest in Puerto Rico, the study found, and the forest’s insect-eating animals have gone missing, too. In 2014, an international team of biologists estimated that, in the past…

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Does language spring from the things it describes?

Does language spring from the things it describes?

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Mark Vernon writes: In conversation at the Hay Festival in Wales this May, the English poet Simon Armitage made an arresting observation. Discussing the nature of language and why it is so good at capturing the experience of being alive, he said: ‘My feeling is that a lot of the language that we use, and the best language for poetry, comes directly out of the land.’ Armitage was placing himself within the Romantic tradition’s understanding of the origins of language,…

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Scientists fear that insects upon which humans depend are declining

Scientists fear that insects upon which humans depend are declining

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The Associated Press reports: A staple of summer — swarms of bugs — seems to be a thing of the past. And that’s got scientists worried. Pesky mosquitoes, disease-carrying ticks, crop-munching aphids and cockroaches are doing just fine. But the more beneficial flying insects of summer — native bees, moths, butterflies, ladybugs, lovebugs, mayflies and fireflies — appear to be less abundant. Scientists think something is amiss, but they can’t be certain: In the past, they didn’t systematically count the…

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Why do we love bees but hate wasps?

Why do we love bees but hate wasps?

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University College London: A lack of understanding of the important role of wasps in the ecosystem and economy is a fundamental reason why they are universally despised whereas bees are much loved, according to UCL-led research. Both bees and wasps are two of humanity’s most ecologically and economically important organisms. They both pollinate our flowers and crops, but wasps also regulate populations of crop pests and insects that carry human diseases. “It’s clear we have a very different emotional connection…

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A growing wave of extinctions is sweeping across the continents

A growing wave of extinctions is sweeping across the continents

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The Guardian reports: Spix’s macaw, a brilliant blue species of Brazilian parrot that starred in the children’s animation Rio, has become extinct this century, according to a new assessment of endangered birds. The macaw is one of eight species, including the poo-uli, the Pernambuco pygmy-owl and the cryptic treehunter, that can be added to the growing list of confirmed or highly likely extinctions, according to a new statistical analysis by BirdLife International. Historically, most bird extinctions have been small-island species…

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Wildlife preservation depends on saving animals, their habitats, and their cultures

Wildlife preservation depends on saving animals, their habitats, and their cultures

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Ed Yong writes: In the 1800s, there were so many bighorn sheep in Wyoming that when one trapper passed through Jackson Hole, he described “over a thousand sheep in the cliffs above our campsite.” No such sights exist today. The bighorns slowly fell to hunters’ rifles, and to diseases spread from domestic sheep. Most herds were wiped out, and by 1900, a species that once numbered in the millions stood instead in the low thousands. In the 1940s, the Wyoming…

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The human domination of the face of the Earth

The human domination of the face of the Earth

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By Rhett A. Butler Despite ongoing deforestation, fires, drought-induced die-offs, and insect outbreaks, the world’s tree cover actually increased by 2.24 million square kilometers — an area the size of Texas and Alaska combined — over the past 35 years, finds a paper published in the journal Nature. But the research also confirms large-scale loss of the planet’s most biodiverse ecosystems, especially tropical forests. The study, led by Xiao-Peng Song and Matthew Hansen of the University of Maryland, is based…

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