Search Results for: Ocean

Study Methods, Strains of Pfiesteria Are Both Critical in Determining Organism’s Toxicity

To gauge the toxicity of Pfiesteria, the important single-celled fish predator that was the culprit behind a number of fish kills and fish diseases along the East Coast in the 1990s, researchers need to both use the proper study methods and recognize that certain populations of the organism, called strains, are toxic while others are not.

That’s the main result of a wide-ranging study by Dr. JoAnn M. Burkholder, professor and director of the Center for Applied Aquatic Ecology at N

Pollution can convert airborne iron into soluble form required for phytoplankton growth

A surprising link may exist between ocean fertility and air pollution over land, according to Georgia Institute of Technology research reported in the Feb. 16 issue of the Journal of Geophysical Research — Atmospheres. The work provides new insight into the role that ocean fertility plays in the complex cycle involving carbon dioxide and other greenhouse gases in global warming.

When dust storms pass over industrialized areas, they can pick up sulfur dioxide, an acidic trace gas e

Findings by Scripps Scientists Cast New Light on Undersea Volcanoes

Study in Science may help change the broad understanding of how they are formed

Researchers at Scripps Institution of Oceanography at the University of California, San Diego, have produced new findings that may help alter commonly held beliefs about how chains of undersea mountains formed by volcanoes, or “seamounts,” are created. Such mountains can rise thousands of feet off the ocean floor in chains that span thousands of miles across the ocean.

Since the mid-20th centu

New system can measure productivity of oceans

Researchers at Oregon State University, NASA and other institutions announced today the discovery of a method to determine from outer space the productivity of marine phytoplankton – a breakthrough that may provide a new understanding of life in the world’s oceans.

Phytoplankton are the incredibly abundant microscopic plant forms that provide the basis for most of the marine food chain, half the oxygen in our atmosphere and ultimately much of the life on Earth. They have

Chemical compounds found in whale blubber are from natural sources, not industrial contamination

Chemicals found in whale blubber, and initially suspected of being from industrial sources, have turned out to be naturally occurring, raising questions about the accumulation of both natural and industrial compounds in marine life.
A new study in the journal Science by researchers Emma Teuten, Li Xu, and Christopher Reddy at the Woods Hole Oceanographic Institution (WHOI) is causing researchers to rethink the sources and fates of many chemical compounds in the environment.

Natural climate change may be larger than commonly thought

A new study of climate in the Northern Hemisphere for the past 2000 years shows that natural climate change may be larger than generally thought. This is displayed in results from scientists at the Stockholm University, made in cooperation with Russian scientists, which are published in Nature on 10 Feb 2005.

The most widespread picture of climate variability in the last millennium suggests that only small changes occurred before the year 1900, and then a pronounced warming set in

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