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LONDON INDEPENDENT Why global warming puts bib on the menu By Steve Connor, Science Editor 13 May 2005 Nearly two-thirds of fish species in the North Sea have moved further north in search of colder waters because global warming is driving sea temperatures higher. Scientists have compiled the first unequivocal evidence linking a major northward shift of North Sea fish species with rising ocean temperatures. The researchers believe the movement is more dramatic than the simple migration of individual fish and represents a fundamental change in the distribution of marine species. A study that covers 25 years of data has found the range of nearly two-thirds of North Sea species - including commercially important fish such as cod and haddock - have shifted either further north or to colder depths. As cold-water fish have gone north, exotic warmer-water species such as the bib, scaldfish and lesser weever have extended their range by moving into the North Sea from the south, said Alison Perry, a marine biologist at the University of East Anglia in Norwich. If trends continue, then Atlantic cod will no longer be able to live in the warm waters of the North Sea by 2080 and its habitat will be totally occupied by the southerly bib, Dr Perry said. "This is not just a case of individual fish choosing to move into colder waters. It points towards an entire population of fish becoming less viable in response to warming," Dr Perry said. "It's not just about fish migrating, it's about seeing a whole range of long-term responses to rising sea temperatures over the past 25 years," she said. Between 1962 and 2001, the average temperature of the North Sea increased by 0.6C. During that period, the world experienced the warmest years on record, which many climatologists have linked to man-made pollution. "... "... "... FOR FULL ARTICLE: http://news.independent.co.uk/low_res/story.jsp?story=637990&host=3&dir=58 _________________________ Peter Anderson, President RECYCLEWORLDS CONSULTING 4513 Vernon Blvd. Suite 15 Madison, WI 53705-4964 Ph: (608) 231-1100 Fax: (608) 233-0011 Cell: (608) 698-1314 eMail: anderson@no.address web: www.recycleworlds.net CONFIDENTIAL This message, and all attachments thereto, is covered by the Electronic Communications Privacy Act, 18 U.S.C., Sections 2510-2521. This message is CONFIDENTIAL. If you are not the intended recipient of this message, then any retention, dissemination, distribution or copying of this communication is strictly prohibited. Please notify me if you received this message in error at anderson@no.address and then delete it. |
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