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Numerical study of hydrodynamic effects on Manila clam population distribution and transport in the Southwest Laizhou Bay, China

文献类型： 外文期刊

作者： Zhong, Yi 1 ; Zhang, Jihong 1 ; Song, Dehai 3 ; Zhao, Yunxia 1 ; Liu, Yi 1 ; Wu, Wenguang 1 ; Qiao, Lulu 5 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China

2.Pilot Natl Lab Marine Sci & Technol Qingdao, Funct Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266200, Peoples R China

3.Ocean Univ China, Inst Adv Ocean Studies, Key Lab Phys Oceanog, Qingdao 266100, Peoples R China

4.Pilot Qingdao Natl Lab Marine Sci & Technol Qingda, Lab Ocean Dynam & Climate, Qingdao 266200, Peoples R China

5.Ocean Univ China, Coll Marine Geosci, Qingdao, Peoples R China

6.Ocean Univ China, Key Lab Submarine Geosci & Exploring Tech, Qingdao, Peoples R China

7.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Geol, Qingdao 266200, Peoples R China

关键词： Numerical model; Hydrodynamic environment; Manila clam; Swimming behavior; Larval transport

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）

ISSN： 0048-9697

年卷期： 2023 年 865 卷

页码：

收录情况： SCI

摘要： Pelagic larvae of marine organisms are abundant on many continental shelves. Due to their importance as a biological resource and contribution to marine biodiversity, the dynamics of pelagic larvae have received wide attention. Numer-ical models are an efficient approach to assessing pelagic larval transport driven by various ocean dynamics. However, few studies have focused on the pelagic larval distribution of Manila clam populations and related dynamic factors in the southwestern Laizhou Bay (SLB) during late spring. A hydrodynamic model including realistic meteorologic and oceanic boundary conditions was coupled with a larval transport model to describe the pelagic larval distribution and transport processes. The hydrodynamic model was validated with observational and satellite-derived data. Effects of hydrodynamics and biological behavior on pelagic dynamics were further simulated with numerical experiments. During the early planktonic period, most clam larvae in the SLB were transported eastward or northeastward. Two po-tential larval settlement areas (LSAs) were recognized: the east side of the dike outside Guangli port and the Lao River estuary. The dominant controlling factor was southerly wind, and larvae's response to river plume or estuarine circu-lation played a secondary role. Larval transport depended on bottom subtidal currents when late-stage larvae settled near the bottom layer. The hydrodynamic and larval transport model established in this study can be applied to other bays and coastal waters. Understanding the clam larval distribution and transport dynamics in the SLB can pro-vide a reference for predicting LSAs and biological resource management in coastal aquaculture areas.

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