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CNR: Alamanacco della Scienza

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N. 18 - 10 dic 2014
ISSN 2037-4801

International info   a cura di Cecilia Migali

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Marine regime shifts around the globe

Alessandra Conversi, researcher at Cnr-Insitute of Marine Sciences (Ismar) is among the author of the theme issue of the Philosophical Transactions of the Royal Society—biological sciences. Eleven Centre researchers contribute to a new global scientific synthesis.

This theme issue of addresses marine regime shifts from the different perspectives of theory, ecosystem observations and management. More than 80 authors from different disciplines, across 6 continents, highlight the advancements in the field, as well as provide novel hypotheses.

Regime shifts are dramatic, abrupt changes in ecosystem structure and function, that have been reported worldwide in the marine realm. Such shifts can carry significant socio-economical impacts, for example when they involve fisheries collapses, coral reef degradation or the overgrazing of kelp beds. Despite numerous studies showing the importance and actuality of these shifts, major questions are still unsolved and there is still no common understanding of the drivers, mechanisms and characteristics of abrupt changes in real marine ecosystems.

A study shows what could be the future impacts of a warming sea on coral reef ecosystems by simulating the response of corals in the Caribbean to a climate change scenario for the next 50 years; how simultaneous regime shifts detected in marine ecosystems across the northern hemisphere could have been caused by abrupt warming in the climate at the end of the eighties; and what role the Soviet Union’s fishing activity may have had in marine shifts in the Baltic, Black Seas and Scotian Shelf.

Per saperne di più: - classic.rstb.royalsocietypublishing.org/content/370/1659/20130260.short