Loss of large predators caused widespread disruption of ecosystems – ‘Humankind’s most pervasive influence on the natural world’

Media contactsCheryl Dybas, NSF (703) 292-7734, cdybas@nsf.govTim Stephens, UCSC (831) 459-2495, stephens@ucsc.edu July 14 (NSF) – The decline of large predators and other “apex consumers” at the top of the food chain has disrupted ecosystems across the planet. The finding is reported by an international team of scientists in a paper in this week’s issue […]

Climate change could kill one in 10 species by end of the century

By Steve Conner, Science Editor12 July 2011 Climate change is speeding up the rate at which animals and plants are becoming extinct. By the end of the century, one in 10 species could be on the verge of extinction because of the effects of global warming, a study has found. The findings support the view […]

IUCN: Tuna species urgently need protection – Southern bluefin tuna ‘critically endangered’

Paris (AFP) July 7, 2011 – The reference organisation for the conservation status of Earth’s animals and plants said for the first time Thursday that most species of tuna are urgently in need of protection. Five of eight tuna species are now threatened or nearly threatened with extinction due to overfishing, according to the Red […]

Elephant numbers down 50 percent – Half of remaining populations no longer viable

By Pete Wilton June 28, 2011 Half the elephants from West and Central African savannahs have vanished in the past 40 years, scientists report in PLoS One. A team, including Iain Douglas-Hamilton of Oxford University’s Department of Zoology, estimate that around 7,750 elephants remain in the Sudano-Sahelian zone, which covers 20% of the continent, a […]

Mass extinction of ocean species soon to be ‘inevitable’

LONDON, UK, June 21, 2011 (ENS) – The oceans are at high risk of entering a phase of extinction of marine species unprecedented in human history, a panel of international marine experts warns in a report released today [pdf]. A deadly trio of factors – warming, acidification and lack of oxygen – is creating the […]

Environmentalists, tuna poachers battle at sea

By Don Melvin11 June 2011 Tuna fishermen confronted environmentalists on the Mediterranean on Saturday, as activists attempted to disrupt illegal tuna fishing under the no-fly zone north of Libya. The fishermen attacked the Steve Irwin, owned by the U.S.-based Sea Shepherd Conservation Society, by hurling heavy metal chain links aboard. They also attempted to lay […]

Frog faces last stand in Panama against killer fungus – ‘Modern equivalent of extinct dinosaurs’

By Sean Mattson10 June 2011 CERRO SAPO, Panama (Reuters) – The harlequin frog that hops and swims the rocky streams of a damp niche of Toad Mountain in eastern Panama’s dense tropical jungle has probably been on Earth for around 3 million years. Within a few more years, the black-spotted orange-and-white amphibian with dazzling green-tinged […]

Wildlife populations ‘crash’ in the Mara region of Kenya, Africa

By Matt Walker Editor, BBC Nature 31 May 2011 Populations of wildlife species in the world-renowned Masai Mara reserve in Kenya have crashed in the past three decades, according to research published in the Journal of Zoology. Numbers of impala, warthog, giraffe, topi, and Coke’s hartebeest have declined by over 70%, say scientists. Even fewer […]

Pollution and overfishing spell trouble for dolphins worldwide

By Roddy Scheer and Doug Moss27 May 2011 Dear EarthTalk: How are wild dolphins faring on the high seas? Recent reports of dolphin deaths in the Gulf of Mexico may well be due to last year’s BP oil spill, but I imagine there are many threats to dolphins from pollution, human overfishing and other causes. […]

New study provides global analysis of seagrass extinction risk

ScienceDaily (May 25, 2011) — A team of 21 researchers from 11 nations, including professor Robert “JJ” Orth of the Virginia Institute of Marine Science, has completed the first-ever study of the risk of extinction for individual seagrass species around the world. The 4-year study, requested by the International Union for the Conservation of Nature […]

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