lundi 3 novembre 2008

Le changement climatique influe sur la ressource halieutique

Plusieurs études récentes montrent que le changement climatique est un facteur important de la diminution des stocks de poissons. La modification de la température et de la salinité des eaux océaniques s'ajouterait à la surpêche, à la pollution et à la dégradation des écosystèmes pour expliquer la rareté de certaines espèces halieutiques.
Seabass And Chips: Harnessing Science To Predict Ocean Climate Change
ScienceDaily (Oct. 26, 2008) — Cod, salmon and eels and other native cold water fish might eventually become a rarity in Irish waters—and not necessarily because of overfishing, pollution or habitat destruction. Long-term changes in the temperature and salt content of our regional seas, brought about by climate change, may force species such as these into deeper, colder waters and replace them with warm water species such as sea bass and boarfish.
Fish Scales From Norway Show Ocean Fate Of Atlantic Salmon
ScienceDaily (June 4, 2008) — Since 1983, sports fishermen from the Drammen River in Norway have been saving the scales of Atlantic salmon, caught as they return from years at sea to spawn in fresh water. A team of researchers including Jennifer McCarthy of the University of Massachusetts Amherst is using these scales to solve the mystery of why most of these endangered fish never survive their ocean stay.
How Global Warming Could Affect The World's Fisheries
ScienceDaily (May 17, 2007) — Watching the ebb and flow of populations of fisheries around the world can provide some insight into understanding the effects of global warming on our planet, according to a group of researchers writing in the summer 2007 issue of Natural Resource Modeling. The fact that fisheries are closely tied to human health and species health across the globe adds to their significance.
Mysterious Eel Fishery Decline Blamed On Changing Ocean Conditions
ScienceDaily (Mar. 7, 2008) — American eels are fast disappearing from restaurant menus as stocks have declined sharply across the North Atlantic. While the reasons for the eel decline remain as mysterious as its long migrations, a recent study by a NOAA scientist and colleagues in Japan and the United Kingdom says shifts in ocean-atmosphere conditions may be a primary factor in declining reproduction and survival rates.
Climate Changes Brews Trouble For Marine Life In European Seas
ScienceDaily (Mar. 5, 2007) — How does Climate Change directly impact on marine ecosystems?
Warming Climate, Cod Collapse, Have Combined To Cause Rapid North Atlantic Ecosystem Changes
ScienceDaily (Feb. 23, 2007) — Ecosystems along the continental shelf waters of the Northwest Atlantic Ocean, from the Labrador Sea south of Greenland all the way to North Carolina, are experiencing large, rapid changes, reports a Cornell oceanographer in the Feb. 23 issue of Science.
Cod In A Sweat: Some Like It Hot!
ScienceDaily (Apr. 29, 2006) — Scientists at CEFAS (UK) have found that the migration pattern of wild cod is much less restricted by environmental temperature than laboratory studies suggest.

Source : Science Daily

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