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A model for the transportation and distribution of jellyfish Rhopilema esculentum for stock enhancement in the Liaodong Bay, China

文献类型： 外文期刊

作者： Yin, Liping 1 ; Shan, Xiujuan 4 ; Zhao, Chang 1 ; Jin, Xianshi 4 ; Wang, Guansuo 1 ; Qiao, Fangli 1 ;

作者机构： 1.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Peoples R China

2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Reg Oceanog & Numer Modeling, Qingdao 266237, Peoples R China

3.Minist Nat Resources, Key Lab Marine Sci & Numer Modelling, Qingdao 266061, Peoples R China

4.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China

5.Pilot Qingdao Natl Lab Marine Sci & Technol Qingd, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Peoples R China

6.Minist Nat Resources, Key Lab Data Anal & Applicat, Qingdao 266061, Peoples R China

关键词： Liaodong Bay; Jellyfish Rhopilema esculentum; distribution and connectivity; Lagrangian particle tracking; current

期刊名称：ACTA OCEANOLOGICA SINICA （ 影响因子：1.431； 五年影响因子：1.445 ）

ISSN： 0253-505X

年卷期： 2019 年 38 卷 1 期

页码：

收录情况： SCI

摘要： A numerical model for jellyfish Rhopilema esculentum stock enhancement is developed for the first time. The model is based on an operational ocean circulation-surface wave coupled forecasting system for the seas off China and adjacent areas and uses a Lagrangian particle-tracking scheme to track the trajectories of released jellyfish. The Jellyfish are modeled as particles with diel vertical migration and are passively drifted by the current and dispersion due to the sub-grid processes. A comparison between the simulation and survey results demonstrate that the model can capture the primary distribution patterns of the released jellyfish. The model results show that the ocean current and indirect wind impact are the main drivers controlling the jellyfish transport. A connectivity matrix between the release sites and fishing grounds indicates the top of the bay is better than the eastern and western coasts for jellyfish fishing. The matrix also shows that only 45% and 27% of the jellyfish released from Wafangdian (WFD) can enter the fishing ground in 2008 and 2010; thus, the site near WFD is not an advisable location for jellyfish release. A Lagrangian probability density function based on a nine-year tracing experiment validates the results and further provides a climatology distribution of the released jellyfish. Several experiments are conducted to examine the sensitivity of the model to random walk schemes and to release conditions. The model requires a random walk but is insensitive to the random walk scheme. The experiments with different habitat depths show that if the jellyfish are fixed on the bottom of the water, most of them will be transported to the center, or even out of the bay, by the bottom circulation.

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