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News articles on extinction

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Mongabay.com news articles on extinction in blog format. Updated regularly.

After disease engulfs island, rare mountain chicken frogs airlifted to safety

(04/23/2009) In a rescue operation that sounds straight out of an action film, 50 mountain chicken frogs were airlifted from the Caribbean island Montserrat after the discovery of Chytridomycosis, a fungal disease that has wiped out amphibian populations worldwide. Already, hundreds of the critically-endangered mountain chicken frogs succumbed to the disease, which is thought to have made its way to the island in late 2008 or early 2009.


Mysterious decline of small mammals in Bolivia may be linked to burning Amazon

(04/19/2009) During ten years surveying small mammal populations in Bolivia's cerrado, Dr. Louise Emmons with the Smithsonian Institute found that the mammals were suffering precipitous declines, even local extinctions. After ruling out the usual suspects—local fires, rainfall, and flooding—Emmons formed a novel hypothesis regarding the decline. Could a sudden lack of nighttime dew caused by the burning of the Amazon be the cause of the mammal decline?


Mediterranean bluefin tuna has only three years left unless fishery closes

(04/14/2009) If the Mediterranean bluefin tuna fishery is not closed, the bluefin will be functionally extinct by 2012 according to a new analysis from World Wildlife Fund (WWF). While the population has undergone steep declines for over a decade, fishery managers and policy-makers have continually ignored calls from scientists that fishing must stop if the Mediterranean bluefin tuna is to survive.


Rash of tiger attacks linked to deforestation by large paper corporation APP

(03/18/2009) The Sumatran tiger, a critically-endangered subspecies, is hanging on by a thread in its island home. Biologists estimate that at most 500 individuals remain with some estimates dropping as low as 250. Despite the animal's vulnerability, large-scale deforestation continues in its habitat mostly under the auspices of one of the world's largest paper companies, Asian Pulp and Paper (APP). Shrinking habitat and human encroachment has led to a rise in tragic tiger encounters, causing both human and feline mortalities.


Shortsighted recommendations to eat more fish ignore large-scale environmental impact

(03/16/2009) Recommendations by international health agencies, doctors, nutritionists, and the media to consume more fish for better health ignore the fact that fish stock are collapsing worldwide, reports a new study published in the Canadian Medical Association Journal. “Even at current levels of fish consumption, fisheries globally have reached a state of severe crisis. Already, the demand from affluent and developing economies, particularly newly affluent China, cannot be met by the world’s fisheries,” states the new report.


Poison frog diversity linked to the Andes

(03/10/2009) Electric colors, wild markings, and toxic skin have made poison frogs well-known inhabitants of the Amazon rainforest. With 353 recognized species, and probably more awaiting discovery, poison frogs are an incredibly diverse group of amphibians. While it has long been believed that the Amazon basin, itself, was the source of their diversity, a new study published in PLoS Biology has uncovered that the Andes mountain chain has served as an oven of evolutionary biodiversity for poison frogs over several million years.


Only one out of 91 antelope species is on the rise

(03/04/2009) The springbok is the only antelope species whose population is on the rise, according to a new review by the Red List for the International Union for Conservation of Nature (IUCN). In addition, over a quarter of the antelopes, 25 species out of 91, are considered threatened with extinction. “Unsustainable harvesting, whether for food or traditional medicine, and human encroachment on their habitat are the main threats facing antelopes,” says Dr Philippe Chardonnet, Co-Chair of the IUCN Antelope Specialist Group.


Time to give up on Tasmanian tiger, says DNA expert

(03/02/2009) Money and energy spent on finding the Tasmanian tiger should be used for other conservation purposes, according to Dr. Jeremy Austin from the University of Adelaide’s Centre for Ancient DNA. The Tasmanian tiger, or Thylacine, has captured the imagination of cryptozoologists ever since the last known individual died in the 1936 in the Hobart Zoo, which closed the next year. There have been several unreported sightings throughout the island since the 1930s, including inconclusive photos taken by German tourists.


Could America’s 700 billion stimulus have saved life on earth?

(02/26/2009) In a January op-ed in Science, ecologist Jaboury Ghazoul wistfully and wittily ponders how far the 789 billion stimulus bill recently passed by the US Congress could go toward saving our planet's embattled life-forms. In his essay, Ghazoul suggests we put the 700 billion “in the context of the species extinction crisis”. According to various scientific analyses the extinction rate is currently 100 to 1,000 times the average. Such a catastrophic loss of species—while making the world a lonelier and less interesting place—will unpredictably reshape ecosystems we depend on, causing social, political, and economic upheaval.


Photos: Rarest cheetah photographed for the first time

(02/23/2009) With only 250 individuals left the Saharan Cheetah is on the brink of extinction. Little-studied, this imperiled subspecies has been photographed for the fist time by scientists from by the Zoological Society of London (ZSL) and Office du Parc National de l’Ahaggar (OPNA) using camera traps. “The Saharan cheetah is critically endangered, yet virtually nothing is known about the population, so this new evidence, and the ongoing research work, is hugely significant,” said Dr Sarah Durant, a Senior Research Fellow with ZSL.


Salamander populations collapse in Central America

(02/09/2009) Salamanders in Central America — like frogs, toads, and other amphibians at sites around the world — are rapidly and mysteriously declining, report researchers writing in the journal Proceedings of the National Academy of Sciences. Disturbingly, salamanders are disappearing from protected areas and otherwise pristine habitats.


Monstrous prehistoric snake provides glimpse of warmer tropical forests

(02/04/2009) On Wednesday scientists announced the discovery of the world’s largest snake, a prehistoric beast which preyed on giant turtles and crocodile-like reptiles in South America after the demise of the dinosaurs. As amazing as the discovery is, its greatest importance may be the clues it provides conservationists about the future of tropical forests under various global warming scenarios.


World’s largest snake discovered: prehistoric serpent was twice the size of an anaconda

(02/04/2009) Paleontologists have recently uncovered the world’s largest snake announces a paper in Nature. Measuring an astonishing 42 to 45 feet, the Titanoboa cerrejonensis makes the anaconda look diminutive. In fact the prehistoric serpent even makes once-ridiculous horror movie snakes appear conservative. "Truly enormous snakes really spark people's imagination, but reality has exceeded the fantasies of Hollywood," said Jonathan Bloch, one of the leaders of the party that discovered the prehistoric serpent. "The snake that tried to eat Jennifer Lopez in the movie Anaconda is not as big as the one we found."


Global warming may doom emperor penguins to extinction

(01/27/2009) Disappearing sea ice around Antarctica may put emperor penguins at risk of extinction within the next century, warn scientists writing in this week's Proceedings of the National Academy of Sciences.


Symposium tackles big question: how many species will survive our generation

(01/16/2009) Nine scientists dusted off their crystal balls Monday at the National Museum of Natural History in Washington DC, weighing in on the future of the world’s tropical forest. Despite the most up-to-date statistics, prognosis for the future of tropical forests varied widely. In the last few years a schism has occurred among biologists regarding the future of the tropics. No tropical scientist denies that rainforests and the species which inhabit them face unprecedented threats; neither do they argue that some of these forested regions and species will likely not survive the next fifty years. What has sparked debate, sometimes heated, is how bad will is it really? When the dust settles, what percentage of species will survive and how much forest will remain?


What is the greatest threat to rainforests: habitat destruction or climate change?

(01/13/2009) A symposium from the Smithsonian Institution meant to debate the level of threat by deforestation posed to the tropics shifted topic slightly near its end as scientists began to discus which was the most significant threat for rainforests and the species that inhabit them: habitat destruction or climate change?


Selective logging occurs in 28 percent of world’s rainforests

(01/13/2009) New satellite research presented for the first time at a symposium entitled “Will the rainforests survive?” showed that selective logging is impacting over a quarter of the world’s rainforests. Gregory Asner from the Carnegie Institution presented the “first true global estimate of selective logging” which showed that 5.5 million square kilometers of the rainforest has already seen selective logging or is slated to be logged in the near future.


Rediscovery of the solenodon, a rare venomous mammal, in Haiti

(01/09/2009) In the journal Oryx researchers from EDGE, a program of the Zoological Society of London (ZSL), have announced the rediscovery of a small population of Hispaniolan solenodons in Haiti. At the same time scientists in the Dominican Republic have taken the first ever footage of this endangered mammal.


Tropical species face high extinction risk

(12/10/2008) Tropical plant species face an inherently high extinction risk due to small populations and restricted ranges relative to temperate species, reports research published in PLoS ONE. These traits leave them vulnerable to habitat disturbance and climate change.


Studying world's rarest penguin leads to the discovery of a new species

(11/19/2008) Researching one of the world's most endangered penguins in New Zealand, the yellow-eyed penguin, has led to a remarkable discovery. DNA from 500-year-old penguin fossils has shown that the country was once home to not just one penguin species, but two. The DNA has resurrected an unknown extinct penguin, which researchers have named the Waitaha Penguin.


Prioritizing amphibian species for captive breeding to save them from extinction

(11/13/2008) Frogs, toads, salamanders and other amphibians are disappearing at an alarming rate. Of approximately 6,000 amphibian species in the world, about one third are classified as threatened or endangered. A disease caused by a chytrid fungus has devastated frogs living in mid to high elevation streams worldwide. Amphibians also face habitat destruction as forests and wetlands are developed and polluted by agricultural chemicals. In Panama, highland frog populations west of the Canal have declined at an alarming rate.


Scientists can't explain cause of amphibian extinction crisis

(11/13/2008) Scientists have yet to conclusively explain the underlying cause of global declines in amphibian populations, according to a study published in the journal Proceedings of the National Academy of Sciences. The research says that two leading theories for the demise of amphibians — both related to the emergence and spread of the deadly chytrid fungus — are not supported by scientific data.


Factoring social and economic instability into ecological catastrophe and the decline of western civilization

(11/12/2008) When proposing and exploring solutions to environmental crises we rarely, if ever, consider social and geopolitical factors such as massive refugee migrations, economic market instability and collapse, wars for resources, the peaking of oil, civil uprisings/riots, and the rise of fascism/military oppression. If we hope to create lasting and effective solutions to environmental issues of the 21st Century it is clear we must consider facets beyond the realm of traditional environmental science and shift towards multi-disciplinary systems-level approaches. In addition to the long list of existing and impending environmental crises (passing points-of-no-return in tropical deforestation and climate change, widespread coral bleaching, and the accelerating mass extinction of biodiversity) we must recognize and adapt to the effects of current and emerging social issues (resource wars, economic collapse, and the rise of fascism).


Mass amphibian die-offs affect ecosystems

(10/19/2008) Large-scale die-offs of amphibians due to the outbreak of a killer fungal disease is impacting the forest ecosystem in which they live, reports a new study published in the journal Ecosystems.


Kangaroos at risk from climate change

(10/16/2008) A 2°C-rise in temperature could trigger significant range contraction for kangaroos in Australia and put one species at high risk of extinction, reports research published in the December issue of Physiological and Biochemical Zoology.


Armageddon for amphibians? Frog-killing disease jumps Panama Canal

(10/12/2008) Chytridiomycosis — a fungal disease that is wiping out amphibians around the world — has jumped across the Panama Canal, report scientists writing in the journal EcoHealth. The news is a worrying development for Panama's rich biodiversity of amphibians east of the canal.


Rainforest biodiversity at risk from global warming

(10/09/2008) Climbing temperatures may doom many tropical species to extinction if they are unable to migrate to higher elevations or cooler latitudes, report researchers writing in Science.


52% of amphibians, 35% of birds at risk from climate change

(10/08/2008) 52 percent of the amphibians, 35 percent of birds and 71 percent of reef-building coral are "particularly susceptible" to climate change, warns an IUCN report.


Half of the world's mammal species in decline (update)

(10/06/2008) Half of the world's mammal species are in decline, according to a new assessment of the planet's 5,487 mammals.


An interview with ringtailed lemur expert Alison Jolly

(10/06/2008) Madagascar has more than 100 types of lemurs, but the most famous species is the ringtailed lemur, a primate found widely in the southern part of the Indian Ocean island. The world's leading expert on ringtailed lemurs is Alison Jolly, presently a Visiting Scientist at the University of Sussex in the UK. Since arriving on the Indian Ocean island in 1963, Jolly has documented the behavior and population dynamics of ringtailed lemurs in Berenty, a small private reserve of gallery forest amid a sea of desert-like spiny forest in southern Madagascar.


One quarter to one third of mammals threatened with extinction

(10/06/2008) One in four of the world's land mammal species and one in three marine mammal species is threatened with extinction, according to an update of the IUCN Red List, the gold standard for the conservation status of global biodiversity.


More than half of Europe's amphibians face extinction by 2050

(09/28/2008) Researchers with the Zoological Society of London (ZSL) said over half of European amphibians face extinction in less than fifty years due to a perfect storm of threats: climate change, habitat loss, and disease. The announcement came at an event titled ‘Amphibians in a climate of change' hosted by Sir. David Attenborough, one of the world's most well-known wildlife enthusiasts due to his long career making nature documentaries.


Past climate change drove mass extinction in Pakistan

(09/26/2008) Research on long-vanished mammals in the Siwalik region of Northern Pakistan has yielded results relevant for today. In the span of two-and-a-half million years climate change caused a shift in Siwalik habitat from wet monsoon forest to savannah, dooming over half the mammal species to local extinction. The research was published by the Proceedings of the National Academy of Sciences.


12 fish species go extinct in lake near Istanbul

(09/24/2008) Turkey has lost twelve species of fish to pollution in Lake Sapanca. Lake Sapanca used to be one of Turkey's most bio-diverse lakes. A decade ago the lake's water was pristine enough to be pumped directly to Istanbul for citizen use, but due to rising pollution it no longer serves as a source for the city water.


Palawan's wildlife faces extinction risk due to mining, pet trade

(09/17/2008) Scientists warn that species on the Philippine island of Palawan are rapidly headed toward extinction due to habitat loss and the illegal wildlife trade. Last week ornithologist Aldrin Mallari presented a paper showing that all of Palawan's endangered species inhabited lowland forest, according to an article in the Philippine Daily Inquirer. Lowland forest is broadly open to human development in Palawan, whereas areas above a thousand meters are protected.


Thought-to-be-extinct frog rediscovered in Australia

(09/11/2008) Scientists have rediscovered a thought-to-be-extinct species of frog in a creek in Northern Australia. The find offers hope that some species have survived a fungal epidemic that has devastated the amphibians of Queensland.


Independent of climate, forest cover in southern Amazon may fall to 20% by 2016

(09/03/2008) Forest cover in the "Arc of Deforestation" of southern Amazonia will decline to around 20 percent 2016 due to continued logging and conversion of forests for cattle pasture and soy farms, report researchers writing in the journal Environmental Conservation. Analyzing high resolution satellite data from 1984 through 2004 for the Alta Floresta region in northern Mato Grosso, Fernanda Michalski, Carlos Peres and Iain Lake of the University of East Anglia found that forest cover declined from from 91.1 percent to 41.7 percent between 1984 and 2004. They note that while the deforestation rate has slowed to around 2 percent per year since peaking at more than 8 percent annually in late 1980s to mid-1990s, renewed expansion of road networks will enable loggers to increasingly exploit remaining forests, leading to degradation and likely eventual conversion for agricultural use. Overall Michalski and colleagues forecast that forest cover in Alta Floresta will fall to 21 percent by 2016, a decline of 77 percent since 1984.


Researchers devise new comparison of mass extinction events

(09/02/2008) Researchers have created a new way to compare historical mass extinction events. The scoring system, presented in the early online edition of the journal Proceedings of the National Academy of Sciences, works by multiplying the number of taxa — species, genera, and families — that went extinct by the inverse of the time it took to produce a measure dubbed "greatness", which represents the magnitude of the event. Using the system, Celal Sengor and colleagues from Istanbul Teknik Universitesi of Turkey rank the Cretaceous-Tertiary (K-T) event — when the dinosaurs were extinguished in a flash by an asteroid strike or mass oceanic poisoning by a spasm of volcanic activity — as the greatest mass extinction in history. The Permian, which featured a greater loss of species (90-95 percent of marine species and 70 percent of land species) but played out over a longer period to time some 250 million years ago, ranks third after the Silurian, which occurred around 440 million years ago.


Scientists condemn Bush plan for endangered species

(08/27/2008) The Ecological Society of America has come down handily against the Bush Administration's proposed changes to the Endangered Species Act (ESA). The changes would eliminate the requirement for independent scientific review of federal projects, such as roads, dams, and mines, instead allowing federal agencies to conduct internal evaluations and then proceed as they see fit.


The extinction of the baiji a 'wake-up call' to conserve vaquita and other cetaceans

(08/25/2008) In December of 2006 an expedition spent six weeks surveying the Yangtze River in China for one of the world's rarest cetaceans, the baiji. Also known as 'The Goddess of the Yangtze' the shy river-dolphin had roamed the river for millions of years locating fish with echolocation. The survey came back empty-handed without a spotting a single dolphin. Dr. Jay Barlow, a member of the surveying team, described his emotions on the expedition's findings in an interview with Mongabay.com: "I was stunned. I knew the species was in trouble, but I did not think they were already gone. We really had not seen the extinction of a large mammal species in 50 years, so we grew complacent."


Amphibians face mass extinction

(08/11/2008) Amphibians are in big trouble. At least one third of the world's 6,300 known species are threatened with extinction, while at least 200 species have gone extinct over the past 20 years. Worryingly the outbreak of a deadly fungal disease, chytridiomycosis, is spreading throughout the tropics leaving millions of victims. A new study, published in the early edition of the Proceedings of the National Academy of Sciences, warns that there is "little time to stave off a potential mass extinction" of frogs, salamanders, and caecilians.


7 steps to solve the global biodiversity crisis

(08/11/2008) Many biologists believe Earth is entering a sixth mass extinction event, one that has is the direct of human activities, including over-exploitation, habitat destruction and introduction of alien species and pathogens. Climate change — largely driven by anthropogenic forces — is expected to soon increase pressure on Earth's biodiversity. With population and per-capita consumption expected to grow significantly by the mid 21st century, there seems little hope that species loss can be slowed. Nevertheless, writing in the journal PNAS, Stanford biologists Paul R. Ehrlich and Robert M. Pringle suggest seven steps to help improve the outlook for the multitude of species that share our planet.


20% of the Brazilian Amazon's tree species to go extinct

(08/11/2008) A new study estimates the number of trees that will go extinct in the Brazilian Amazon due to habitat loss.


Humans - not climate - drove extinction of giant Tasmanian animals

(08/11/2008) Humans — not climate change — were responsible for the mass extinction of Australia's megafauna, according to a new study published this week in the journal Proceedings of the National Academy of Sciences.


Three American mussel species lost to extinction

(08/10/2008) After a five year review, the U.S Fish and Wildlife Service has asked to take three mussels species off the Endangered Species List due to the belief that the mussels are extinct. The three species were all native to the Tennessee River and are thought to have gone extinct due to drastic changes in water conditions, including pollution and dams.


48% of primates threatened with extinction

(08/05/2008) 48 percent of the world's primate species are at risk of extinction, according to the first comprehensive review of the world's primates since 2003. The results were released as an update to the IUCN Red List at the 22nd International Primatological Society Congress in Edinburgh, Scotland.


Moving species may be only way to save them from climate change

(07/17/2008) Desperate times call for desperate measures, according to a new paper in Science. conservation scientists from the US, the UK, and Australia are calling for the consideration of a highly controversial conservation technique: assisted migration. According to the policy piece, species would be relocated to sites "where they do not currently occur or have not been known to occur in recent history".


Birds face higher risk of extinction than conventionally thought

(07/14/2008) Birds may face higher risk of extinction than conventionally thought, says a bird ecology and conservation expert from Stanford University. Dr. Cagan H. Sekercioglu, a senior research scientist at Stanford and head of the world's largest tropical bird radio tracking project, estimates that 15 percent of world's 10,000 bird species will go extinct or be committed to extinction by 2100 if necessary conservation measures are not taken. While birds are one of the least threatened of any major group of organisms, Sekercioglu believes that worst-case climate change, habitat loss, and other factors could conspire to double this proportion by the end of the century. As dire as this sounds, Sekercioglu says that many threatened birds are rarer than we think and nearly 80 percent of land birds predicted to go extinct from climate change are not currently considered threatened with extinction, suggesting that species loss may be far worse than previously imagined. At particular risk are marine species and specialists in mountain habitats.


1/3 of corals face extinction

(07/10/2008) Nearly one-third of reef-building corals are vulnerable to extinction, according to an assessment of 845 species of coral. Rising temperatures, increased incidence of disease, and human disturbance are driving the trend.


Cuteness determines whether the public will support saving species from extinction

(07/07/2008) How much would you pay to prevent the extinction of the humpback whale? The giant panda? Or how about the red-cockaded woodpecker, the striped shiner, or the water vole? With finite funds and increasing threats to species, should such decision be made on popularity, perceived utility, or ecology?



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