Search Results for: ocean

Geological Study Documents Changes in Coral Reefs

A recent study of coral formations in different tropical locations will be used to help geologists reconstruct climate and storm patterns of the past and learn more about the preservation of reefs. The findings will be presented by David Meyer, University of Cincinnati professor of geology, at the upcoming 2002 meeting and exposition of the Geological Society of America.

Meyer’s previous research established that coral reefs can be an index of the ocean’s health and are greatly impacted by

Life in a greenhouse world

What constrained the evolution of life during the very hot early Earth? Was a simple drop in temperature largely responsible for the emergence of cyanobacteria, a large and varied group of bacteria with chlorophyll that carry out photosynthesis in the presence of light and air with concomitant production of oxygen? Was it a reduction in carbon-dioxide levels?

Geochemist David Schwartzman of Howard University and Ken Caldeira of the Climate and Carbon Cycle Group at Lawrence Livermore Nation

Asian dust storm causes plankton to bloom in the North Pacific

Robotic Carbon Explorers test the “iron hypothesis” in nature

In the spring of 2001, two robotic Carbon Explorer floats recorded the rapid growth of phytoplankton in the upper layers of the North Pacific Ocean after a passing storm had deposited iron-rich dust from the Gobi Desert. The carbon measurements, reported in the October 25 issue of Science, are the first direct observation of wind-blown terrestrial dust fertilizing the growth of aquatic plant life.

A group of scie

Colorado U. space team studying water, ice and potential life on Jupiter moon, Europa

The oozing of glacial material in the floating ice shell on Jupiter’s moon Europa has important implications for future exploration of the enigmatic moon and prospects of life in its ice-covered ocean, according to a University of Colorado at Boulder professor.

Robert Pappalardo, an assistant professor in the astrophysical and planetary sciences department and one of the world’s foremost Europa experts, said the icy moon is believed to contain an ocean some 13 miles under its icy

Increasingly salty Mediterranean favors ice sheet growth

About 150,000 years ago, an anomalous ice age was triggered by an increasingly salty Mediterranean Sea, a development that’s occurring today and may start new ice sheet growth in the next few decades, according to a study at the University of Minnesota. Robert Johnson, an adjunct professor of geology and geophysics, will present his study of the glaciation 150,000 years ago and discuss its implications for today’s climate on Tuesday, Oct. 29, at the annual meeting of the Geological Society

New Findings Reconfirm Toxicity of Pfiesteria Cultures

A team of experts has refuted previous findings published last summer stating that Pfiesteria is not toxic to fish or humans. When they cultured the same strain of P. shumwayae studied by the dissenting scientists, it produced a toxin that killed fish within minutes.

Dr. JoAnn Burkholder, director of North Carolina State University’s Center for Applied Aquatic Ecology, presented the results of the new study Tuesday at the 10th International Conference on Harmful Algae in S

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