Tag: "oceans" at biology news

Humanity's din could be blocking whales' courtship songs

...al, more-extensive studies in noisier parts of the oceans will be needed before scientists can say for sure... every two to three years. In their lifetimes, the oceans have become incredibly noisy. Their world, which is so dependent on sound, is shrinking as a result ...

New computer model promises detailed picture of worldwide climate

...fuel carbon emissions as they are dissolved in the oceans and subsequently released back into the atmosphere... new version has higher spatial resolution in both oceans and sea ice, and the atmosphere is represented by a larger number of vertical layers." To achieve th...

Clay sprays control HABS; disease may affect more than salmon

...ow believes that P. salmonis exists in the world's oceans and is neither unique to salmon nor sea bass. Con...found similar bacteria in the Atlantic and Pacific oceans and the Mediterranean Sea. Hedrick is now working to detect bacterial DNA and antibodies of the ba...

Food for thought: What are the likely side effects of fertilizing phytoplankton with iron?

...sides the sheer logistical issues of supplying the oceans with sufficient iron to result in a significant removal of CO2, there may be several undesired side effects. The effects on marine ecology were pointed out last year in the literature (Chisholm, S. W., et al., Science, 12 Oct. 2001, p. 309-310). Thes...

Is being big clam on the block a factor in species success?

...situation for these groups. Bivalves living in the oceans today are, on average, significantly larger than modern brachiopods. But, while their size differences haven't changed much, these groups have done a major switch ecologically over the last 400 million years. Brachiopods were very diverse and succes...

Evolution upset: Oxygen-making microbes came last, not first

...that oxygen bound to the abundant free iron in the oceans and rained to the seafloor creating the economica...land to break down into sulfates and wash into the oceans where sulfur-loving bacteria gobbled them up. The earliest geological evidence for sulfur bacteria ...

Increasing nitrogen in Earth's soils may signal global changes, say U. of Colorado researchers

...bon molecules in the world's vegetation, soils and oceans must be immense, he said. "If these sinks slow down or turn off in the near future, we could see much larger increases in atmospheric C02," said Townsend. "If cold tundra soils are sensitive to nitrogen, it raises concerns about what might be happen...

Scripps research gives tiny phytoplankton a large role in Earth's climate system

...global warming may be decreased by fertilizing the oceans with iron, which would lead to an increase in the ocean's biological pump. Through such an increase, the argument holds, phytoplankton would be able to draw carbon dioxide out of the atmosphere and therefore reduce global warming. Frouin and Iacobell...

New CU-NASA research belies previous idea that Mars was once warm, wet planet

...dy belies the warm, wet, Mars theory of rivers and oceans embraced by many planetary scientists, since such impactors were so infrequent. "There apparently were some brief warm and wet periods on Mars, but we believe that through most of its history, Mars has been a cold, dry planet," said Segura, currentl...

January GSA BULLETIN media highlights

...m the period reflect global changes in the world's oceans as Earth's climate suddenly deteriorated and then equally suddenly warmed. The same pattern of change is reflected in sediments from the Baltic States to Nevada. The isotopic fingerprints enable the authors to start to dissect the extinction event a...

'The end of the world' has already begun, UW scientists say

...mals and plants will come to an end. At 8 a.m. the oceans will vaporize. At noon after 12 billion years th... adapt will survive for a time, but eventually the oceans will warm too much for the complex life forms to continue. "The last life may look much like the fir...

Ocean report calls for the immediate creation of marine reserves throughout the United States

...ast in a series of scientific reports on America's oceans prepared for the Pew Oceans Commission a Virginia...nd will generate a whole new way of preserving the oceans for coastal communities." Establishing new marine reserves will not be easy, he concluded. "It's goi...

Scripps scientists discover rich medical drug resource in deep ocean sediments

Although the oceans cover 70 percent of the planet's surface, much of their biomedical potential has gone largely unexplored. Until now. A group of researchers at Scripps Institution of Oceanography at the University of California, San Diego, have for the first time s...

Rutgers explorer describes sea floor hot springs as teeming with valuable minerals and microbes

...an-occupied submersible research vessels, said the oceans are no longer considered simply containers for min...ents. "Before the discovery of plate tectonics the oceans were thought of as big bathtubs," he said. "Now we know that the earth's crust, most of it under the...

The dollars and sense of protecting the ocean

...tion and pollution are harming much of the world's oceans and the life within them. For instance, recent studies have shown that the biomass of 'food' or high tropic level fishes in the North Atlantic have declined by two-thirds since the early 1950s, and that world fisheries catches have been declining by ...

Sex, flounder and donuts

... these institutions on issues of importance to the oceans and coasts. SEA GRANT WEB SPOTLIGHT: Survival in Cold Water: Hypothermia Prevention http://www.seagrant.umn.edu/tourism/hypothermia.html Hypothermia is a risk for anyone who enjoys activities like boating, fishing, swimming, hiking, or skiing....

Marine biologists probe 'black box' mysteries of the sea

...'s Hopkins Marine Station. "We're finding that the oceans are not just one big neighborhood but are chopped up into smaller ones. In fact, every bit of coastline might be a small neighborhood that we can manage and try to preserve on its own." Palumbi and fellow Hopkins biologist Mark W. Denny will discuss ...

Scientists crack the black box of coastal ecosystems

... symposium at the AAAS Meeting in Denver. "Coastal oceans are under intense pressure due to overfishing, coa... activities. The grand challenge is to use coastal oceans without misusing them." "It's ironic that we've known so little about this critical area," says Ste...

Scientists urge managers to limit use of destructive fishing gears

...better. We can, and we must for the future of the oceans and the sustainability of fisheries."...

Antarctic animals are under threat from illegal fishing

Animals in the oceans surrounding Antarctica are under increasing threat...aken to protect the unique marine resources of the oceans surrounding Antarctica should be extended to wider areas. During the last five years, the applicatio...

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