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Last 150-Year Variability in Japanese Anchovy (Engraulisjaponicus) Abundance Based on the Anaerobic Sediments of the Yellow Sea Basin in the Western North Pacific 被引量:1

Last 150-Year Variability in Japanese Anchovy(Engraulis japonicus) Abundance Based on the Anaerobic Sediments of the Yellow Sea Basin in the Western North Pacific
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摘要 Relatively short historical catch records show that anchovy populations have exhibited large variability over multi-decadal timescales.In order to understand the driving factors(anthropogenic and/or natural) of such variability,it is essential to develop long-term time series of the population prior to the occurrence of notable anthropogenic impact.Well-preserved fish scales in the sediments are regarded as useful indicators reflecting the fluctuations of fish populations over the last centuries.This study aims to validate the anchovy scale deposition rate as a proxy of local anchovy biomass in the Yellow Sea adjoining the western North Pacific.Our reconstructed results indicated that over the last 150 years,the population size of anchovy in the Yellow Sea has exhibited great fluctuations with periodicity of around 50 years,and the pattern of current recovery and collapse is similar to that of historical records.The pattern of large-scale population synchrony with remote ocean basins provides further evidence proving that fish population dynamics are strongly affected by global and basin-scale oceanic/climatic variability. Relatively short historical catch records show that anchovy populations have exhibited large variability over multi-de- cadal timescales. In order to understand the driving factors (anthropogenic and/or natural) of such variability, it is essential to develop long-term time series of the population prior to the occurrence of notable anthropogenic impact. Well-preserved fish scales in the sediments are regarded as useful indicators reflecting the fluctuations of fish populations over the last centuries. This study aims to validate the anchovy scale deposition rate as a proxy of local anchovy biomass in the Yellow Sea adjoining the western North Pacific. Our reconstructed results indicated that over the last 150 years, the population size of anchovy in the Yellow Sea has exhibited great fluctuations with periodicity of around 50 years, and the pattern of current recovery and collapse is similar to that of historical re- cords. The pattern of large-scale population synchrony with remote ocean basins provides further evidence proving that fish popula- tion dynamics are strongly affected by global and basin-scale oceanic/climatic variability.
出处 《Journal of Ocean University of China》 SCIE CAS 2016年第1期131-136,共6页 中国海洋大学学报(英文版)
基金 supported by the National Basic Research Program (973 Program 2010CB428902) the National Natural Science Foundation of China (40876088)
关键词 fish scales record ANCHOVY the central South Yellow Sea population dynamic 鱼类种群 黄海盆地 北太平洋 沉积物 西部 厌氧 日本 种群波动
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