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Abundance of Calanus sinicus across the tidal front in the Yellow Sea, China

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Abstract:

Abstract

The abundance of Calanus sinicus eggs, nauplii, copepodites and adults and chlorophyll a (Chl-a) concentration were studied across tidal fronts in October 2000, and May and June 2001 in the Yellow Sea, China. The aim of the study was to evaluate the role of tidal fronts in the ecology of C. sinicus. The hydrographic tidal fronts were identified by the horizontal temperature gradient in the bottom layer and the temperature profiles across the fronts. The survey results showed that the concentration of Chl-a was high in the vicinity of the fronts, particularly in spring and early summer. The abundance of C. sinicus eggs and nauplii was usually higher in the tidal fronts than in the adjacent areas. In May and June 2001, the abundance of copepodites and adults of C. sinicus peaked in the tidal front. In June 2001 and October 2000, many copepodites and adults were found in stratified region.

Keywords: Calanus sinicus; Yellow Sea; tidal front

Document Type: Research Article

DOI: http://dx.doi.org/10.1046/j.1365-2419.2003.00253.x

Affiliations: 1: National Natural Science Foundation of China, Beijing 100085, China 2: Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

Publication date: September 1, 2003

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