Search Results for: Ocean

Atlantic expeditions uncover secret sex life of deep-sea nomads

For centuries scientists have thought of deep-sea pelagic fish as nomadic wanderers, in part because information about them was so limited. However, new results from the ongoing Mid-Atlantic Ridge Ecosystems program (MAR-ECO), a Sloan Foundation-sponsored component of the Census of Marine Life, have revealed that these fishes may in fact be gathering at features such as ridges or seamounts to spawn. The research has im

Increased carbon dioxide emissions are rapidly making the world’s oceans more acidic and, if unabated, could cause a mass extinction of marine life similar to one that occurred 65 million years ago when the dinosaurs disappeared. Ken Caldeira of the Carnegie Institution’s Department of Global Ecology will present this research at the AGU/ASLO Ocean Sciences meeting in Honolulu, HI on Monday, Feb 20.

Caldeira’s computer models have predicted that the oceans will become far more

Researcher outlines coral’s future in an increasingly acidic ocean

The ocean is getting more and more acidic, and that’s bad news for coral reefs. That’s the word from University of Miami Rosenstiel School’s Dr. Christopher Langdon who will speak on “Possible Consequences of Increasing Atmospheric CO2 on Coral Reef Ecosystems,” Monday, Feb. 20 at 3 p.m. HST (8 p.m. EST) in Honolulu at the American Geophysical Union’s 2006 Ocean Sciences Meeting.

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University Park, Pa. Ð Deeply buried ocean sediments may house populations of tiny organisms that have extremely low maintenance energy needs and population turnover rates of anywhere from 200 to 2,000 years, according to an international team of researchers.

“The microbial ecosystem in deeply buried marine sediments may comprise a tenth of Earth’s living biomass, but little is known about the organisms, their physiologies, and their influence on surface environments,” says

One of the greatest challenges facing marine ecologists today is finding innovative ways to reverse the rapid decline of coral reef ecosystems around the world. Ten percent of the planet’s reefs already have been degraded beyond recovery, according to one survey, and another 60 percent could die by 2050, primarily because of human activities, such as pollution, overfishing and climate change.

The situation is particularly acute in the island nations of the Caribbean, which

Researchers are enlisting seals, sea lions, tunas, and sharks to serve as ocean sensors, outfitting these top predators with electronic tags that gather detailed reports on oceanographic conditions and, in many cases, transmit the data via satellite. The data are proving useful to both biologists and oceanographers, yielding new information about the migrations and behavior of the animals and about the environments in which they live.

“We’re using these animals as ocean sensors