ii w m NEWS AND NOTES NE W LINK FOUN D IN OCEA N organisms. But some of their data gen fixation by unicells. Measure- s already taken in the mar- NITROGE N CYCLE indicate that unicells may actually ment Scientists have identified an ocean fix nitrogen constantly. ginal waters of the South Pacific— off the coast of northern organism that may help to explain The scientists will continue to the ocean nitrogen cycle. The uni- survey the Pacific Ocean, as well as Australia—yielded the highest re- corded rates of nitrogen fixation by cellular "nitrogen fixers" appear to the North Atlantic and the South be chemically altering nitrogen Pacific Oceans in two research unicells to date. into a form usable for biological cruises in 2006 and 2007. In addi- There are still numerous re- productivity. According to re- tion to collecting more detailed gions of nutrient-poor oceans— search, they are fixing nitrogen at nitrogen-fixation rate measure- typically off the continental shelves rates up to three times higher than ments, the researchers will con- from the Equator north and south previously reported. The results of duct manipulation experiments to to about 40° latitude—in which the study appear in the 26
Bulletin of the American Meteorological Society – American Meteorological Society
Published: Nov 1, 2004
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