Tidal marshes, which nurture marine life and reduce storm damage along many coastlines, should be able to adjust to rising sea levels and avoid being inundated and lost, if their vegetation isn't damaged and their supplies of upstream sediment aren't reduced, a new Duke University study suggests.
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Tracing the origins of marine animals can be extremely difficult, especially in the free-flowing, soup-like conditions of the ocean, but obtaining this information is vital not only for understanding these organisms but for managing and conserving them as well. Scientists at Scripps Institution of Oceanography at UC San Diego have developed a novel approach for tracing the life roots of marine larvae, some of the most difficult organisms to track due to their microscopic sizes.
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There is no denying that climate changes have profound impacts on the world and especially on the marine environment. Recent research has shown that the Northern Hemisphere has been warmer since 1980 than at any other time during the last two millenniums. As a result the increase in temperature under climate change was generally higher in northern than in southern European seas.
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The California Current system has experienced significant changes during the past decade, resulting in dramatic variations in the ecosystem characterized by shifts in phytoplankton production, expanding hypoxic zones, and the collapse of marine food webs off the western coast of the United States. These changes, driven by new wind patterns, are consistent with predictive models of global climate change, scientists said this week at the annual meeting of the American Association for the Advancement of Science.
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Ongoing global climate change causes changes in the species composition of marine ecosystems, especially in shallow coastal oceans
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