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Global warming may be beneficial to some fishermen mongabay.com February 1, 2007 Climate change may be a boon to fisheries off northwestern Africa according to research published in Friday's issue of the journal Science. Lead by Dr. Helen McGregor, a paleoclimatologist at the University of Bremen's Research Center Ocean Margins in Germany, a team of scientists using data from sediment cores linked coastal upwelling off the coast of Morocco to 20th century climate warming. The results are significant because coastal upwelling zones, where nutrient-rich waters rise to the ocean's surface, yield roughly 20 percent of the world's fish harvest but represent less than one percent of the world ocean surface area. The researchers say "the possibility that global warming might affect the strength or extent of ocean upwelling near the coasts therefore has economically important implications."
"Given the apparent overall sensitivity of upwelling during the 20th century to increases in CO2 and our paleo-results of a distinct upwelling response to hemispheric-scale warming and cooling, these results strongly imply that upwelling may continue to intensify with future increased levels of atmospheric CO2 and global warming," the authors write. McGregor, H. V. et al (2007). "Rapid 20th-Century Increase in Coastal Upwelling off Northwest Africa." Science Vol 315. This article is based on a news release from Science. Comments? News options News index | RSS | Add to MyYahoo! Advertisements: Organic Apparel from Patagonia | Insect-repelling clothing |
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