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Report of the Workshop on Growth-increment Chronologies in Marine Fish.pdf (674.94 kB)

Report of the Workshop on Growth-increment Chronologies in Marine Fish: climate-ecosystem interactions in the North Atlantic

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posted on 2014-01-01, 00:00 authored by ICESICES
Over the past several decades, thousands of otoliths, bivalve shells, and scales have been collected for the purposes of age determination and remain archived in Europe-an and North American fisheries laboratories. Advances in digital imaging and com-puter software combined with techniques developed by tree-ring scientists provide a means by which to extract additional levels of information in these calcified struc-tures and generate annually-resolved (one value per year), multidecadal time series of population-level growth anomalies. Chemical and isotopic properties may also be extracted to provide additional information regarding the environmental conditions these organisms experienced. Given that they are exactly placed in time, chronolo-gies can be directly compared to instrumental climate records, chronologies from other regions or species, or time series of other biological phenomena. In this way, chronologies may be used to reconstruct historical ranges of environmental variabil-ity, identify climatic drivers of growth, establish linkages within and among species, and generate ecosystem-level indicators.

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