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Tag: "collapse" at biology news

Are we killing the world's oceans?

...y sustainable? And how are we all to blame for the collapse of coastal fisheries? Most importantly, what can ...ng fisheries crises, how we all play a role in the collapse of coastal fisheries, and environmental issues surrounding offshore petroleum resource development. ...

Satellites shed light on global warming

... accelerating since 1992 and has culminated in two collapse events: Larsen-A in January 1995 and Larsen-B in M...and will soon break away completely. After the collapse event in 2002, the outlet glaciers from the Antarctic Peninsula that previously nourished the ice sh...

By 2048 all current fish, seafood species projected to collapse

...ues, all fish and seafood species are projected to collapse within my lifetime -- by 2048." Worm is an assistant professor of marine conservation biology at Dalhousie University, Halifax, Canada. In the paper "Impact of Biodiversity Loss on Ocean Ecosystem Services," an international team of ecologists and ...

Asia's odd-ball antelope gets collared

...itain as climate and vegetation shifted. With the collapse of the Soviet Empire, unregulated hunting resulted in the recent startling decrease in saiga numbers. "Although Mongolia faces stiff conservation challenges as it transitions to a free-market economy, the saiga can easily emerge as a success story ...

Researchers appeal for new regulations to save coral reefs from live fish trade

...spects of recovery, 24% are under imminent risk of collapse and 26% are under longer term threat of collapse. The scientists argue in their letters that multilevel action, from local to international, is needed to establish institutions that are able to learn from experiences with roving bandits, develop de...

Global warming may have damaged coral reefs forever

...ble which became covered by unsightly algae. The collapse of the reefs removed food and shelter from predato... we have shown that after severe bleaching events, collapse in the physical structure of the reef results in profound impacts on other organisms in the ecosyste...

Dominant meerkats render rivals infertile

...atically increased levels of stress hormones and a collapse in fertility. This tactic reduces conception rates and increases abortion rates among the evicted subordinates, who are only allowed to return to the group after the dominant female has given birth. The dominant female benefits in two ways from r...

Iraq's marshes show progress toward recovery

...mers had begun blowing up dikes and dams after the collapse of the Hussein regime in April 2003--and noted some reestablishment of native plants. Subsequent monitoring, done in collaboration with Iraqi scientists, estimated overall ecosystem health. Richardson and Hussain report that 39 percent of the former ...

Stable polymer nanotubes may have a biotech future

...pplications, but are typically fragile and usually collapse within a few hours. The NIST team developed processes for extending the shelf life of polymer nanotubes--considered essential for commercial applications--and forming sturdy nanotube network structures. First the researchers made tiny, fluid-filled ...

One in 14 men having a heart attack drive themselves to hospital

...ny also reported that they felt they were going to collapse when they arrived in the casualty department. The average time it took women to get to hospital after the onset of initial symptoms was 14 hours, compared with 2.8 hours for men. "Even when their symptoms got bad, it still took women 3.1 hours to ...

Study: Paramedics save more lives when they don't follow the rules

...is designed for cardiac arrest. Sudden unexpected collapse in an adult is almost always due to cardiac arrest. The new approach is not recommended for respiratory arrest, a much less common situation following, for example, drowning or drug overdose." As a cause of death, out-of-hospital cardiac arrest is ...

Wrinkled membranes create novel drug-delivery system

...degrees Celsius causes the capsules to crumple and collapse like deflated beach balls, releasing the drug. "The release rate can be controlled by the amount of wrinkling that occurs," said Chaieb, who also is a professor of bioengineering and a researcher at the Beckman Institute for Advanced Science and Tec...

Hooked on fishing, and we're heading for the bottom, says scientist

... adamant that pulling back from a global fisheries collapse ?one on par with the collapse of various regional fisheries, such as the Atlantic cod fishery off Canada's Newfoundland coast ?req...

Genetic study shows humans have pushed orangutans to the brink of extinction

...gy shows strong genetic evidence of a catastrophic collapse in orangutan populations living in the fragmented ...hael Bruford, and their colleagues report that the collapse occurred within the past hundred years, and most likely within the past decades--coinciding with mas...

Overfishing may drive endangered seabird to rely upon lower quality food

...shing, decades before the infamous sardine fishery collapse of the late 1940s, and nearly a century before rec.... That is, the murrelet diet in the era before the collapse of sardines and declines in other fisheries consisted of a greater proportion of more nutritious foo...

Pulp mill devastates swans' sanctuary in Chile

...e, is most likely responsible for the catastrophic collapse of the swan population. The scientists concluded then that contaminants from the plant contributed to a massive die off of luchecillo, the aquatic vegetation that was the swans' main food source. "It was heart-rending. We talked to people in Valdi...

Bacteria which sense the Earth's magnetic field

...a stable chain, against their physical tendency to collapse by magnetic attraction. But using modern molecular-genetic and imaging processes, researchers from the Max Planck Institue for Marine Microbiology in Bremen and Max Planck Institute of Biochemistry in Martinsried, Germany have identified the protein ...

Chernobyl: The true scale of the accident

...he damaged reactor have degraded, posing a risk of collapse and the release of radioactive dust; * A comp...ential hazard posed by the shelter is the possible collapse of its top structures and the release of radioactive dust. Strengthening those unstable structures ...

Restaurant seafood prices since 1850s help plot marine harvests through history

...c rise in the price of abalone coincident with the collapse of stocks along the California coast. San Francisco menus, which started to feature the slow-growing mollusk in the 1920s, document that the inflation-adjusted price of an abalone meal held steady at about $7 (in 2004 currency) for roughly 20 years....

Freeze-dried mats of microbes awaken in Antarctic streambed

...s Fahrenheit in the past 60 years and has seen the collapse of several major ice shelves and significant glacial thinning in recent years, according to several international studies. The McMurdo Dry Valleys region consists of glaciers, open expanses of barren ground, stream channels and permanently ice-cover...

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