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Relationships between small pelagics and the environment

Where have we been and where do we go from here?

Year of publication 2000

Place of publication Rome, Italy ;

Pages 16 p.

Author Agostini, V.

Publisher FAO ;

Product type Project

Category Programme / project report

Language English

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    El Niño-Southern Oscillation (ENSO) variability is probably the best known mechanism of global climate variability, with large effects on marine ecosystems and particularly on small pelagic populations. However, major changes of small pelagic (abundance regimes) tend to occur on the interdecade scale, rather than with the interannual variability normally associated to ENSO. Despite some recent research, the role of ENSO variability at determining interdecadal climate variations (climate regimes ) is still a matter of controversy. In this work, we searched for statistical relationships between small pelagic and climate regimes and ENSO activity, and between these and indices of extratropical and solar variations over the interdecadal time scale...etc.
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    Review of Internet Websites for the Small Pelagic Fish Species: Sardines and Anchovies 1998
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    This report provides a list and evaluation of sites on the World Wide Web that contain information potentially relevant to management or operations of small pelagic fisheries. The majority of the sites listed provide information that directly concerns the biology, ecology, and fisheries of small pelagic fishes such as anchovies and sardines (pilchards). Other sites evaluated provide information on climatic and oceanographic processes that are thought to effect the population dynamics o f these fishes. The document lists and evaluates over 100 Internet web sites and is the product of about 300 hours of "surfing" the Web.
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    The importance of the relationship between environmental and fishery variability has been repeatedly addressed in the Mediterranean. Understanding the mechanisms that govern year to year fluctuations in abundance as well as year class strength of Mediterranean fishes is essential for the assessment and management of this resource. Correlations between environmental variables and variations in the spatial and temporal distribution of fish populations in the Mediterranean have been addressed. The relationship between environmental forcing and different stocks of fish has not, however, been clearly identified. There are a number of challenges that present themselves when attempting to move this subject forward. Amongst them: 1 ) poor dialogue between fishery scientists and oceanographers 2) limited access to data and information 3) data of differing spatial/chronological scales.
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