Climate-driven winter variations of Calanus sinicus abundance in the East China Sea.

Molinero, Juan Carlos, Tseng, Li-Chun, Lopez-Lopez, Lucia, Sommer, Ulrich, Souissi, Sami and Hwang, Jiang-Shiou (2016) Climate-driven winter variations of Calanus sinicus abundance in the East China Sea. Fisheries Oceanography, 25 (6). pp. 555-564. DOI 10.1111/fog.12172.

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Abstract

Global environmental changes threaten the sustainable use of resources and raise uncertainties regarding marine populations' responses in a changing Ocean. The pelagic copepods of the genus Calanus play a central role in shelf ecosystems transferring phytoplankton carbon to harvested populations, from boreal to temperate regions. Here we examined a 15-yr time series of Calanus sinicus abundance in regards to climate forcing in the East China Sea. We identified a compound effect of the Pacific Decadal Oscillation (PDO) and the East Asian Winter Monsoon (EAWM) on environmental conditions in the East China Sea. Such climate influences not only a southward transport of C. sinicus from its population centres into the Taiwan area, but favours advantageous thermal conditions for the species as well. On the interannual scale, our results show that the population size of C. sinicus echoes climate-driven temperature changes. Hence, the possibility of using the PDO and EAWM variability for assessing and predicting interannual abundance changes of C. sinicus in the East China Sea is considered. The observed close relationship between climate and C. sinicus may promote bottom-up controls in the pelagic food web, further influencing the southern edge of the species' geographic distribution. Owing to the prominent role this species plays in food web dynamics these results might help integrative fisheries management policies in the heavily exploited East China Sea.

Document Type: Article
Funder compliance: info:eu-repo/grantAgreement/EC/FP7/603773
Keywords: Calanus sinicus; copepod biomass; East Asian Winter Monsoon; East China Sea; non-stationary; Pacific Decadal Oscillation; shelf ecosystems
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1111/fog.12172
ISSN: 1054-6006
Projects: OCEAN-CERTAIN, MOST, Future Ocean
Date Deposited: 01 Sep 2016 07:03
Last Modified: 01 Feb 2019 15:10
URI: http://oceanrep.geomar.de/id/eprint/33669

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