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Guan Wenjiang,Chen Xinjun,Gao Feng,Li Gang. 2014. Linkages between the biomass of Scomber japonicus and net primary production in the southern East China Sea. Acta Oceanologica Sinica, 33(10):43-48
Linkages between the biomass of Scomber japonicus and net primary production in the southern East China Sea
东海南部净初级生产力与日本鲐生物量的关联性研究
Received:June 07, 2013  Revised:December 28, 2013
DOI:10.1007/s13131-014-0540-4
Key words:southern East China Sea  net primary production  Scomber japonicus  biomass
中文关键词:  东海南部  净初级生产力  日本鲐  资源量
基金项目:The Industrialization Project of National Development and Reform Commission under contract No. 2159999; the Shanghai Universities First-class Disciplines Project (Fisheries); The National High-tech Industrialization Project of Remote Sensing System Development for High Resolution Ocean Satellite and Demonstration Application.
Author NameAffiliationE-mail
Guan Wenjiang College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China 
wjguan@shou.edu.cn 
Chen Xinjun College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China 
 
Gao Feng College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China 
 
Li Gang College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China 
 
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Abstract:
      Fish biomass is a critical component of fishery stock assessment and management and it is often estimated from ocean primary production (OPP). However, the relationship between the biomass of a fish stock and OPP is always complicated due to a variety of trophic controls in the ecosystem. In this paper, we examine the quantitative relationship between the biomass of chub mackerel (Scomber japonicus) and net primary production (NPP) in the southern East China Sea (SECS), using catch and effort data from the Chinese mainland large light-purse seine fishery logbook and NPP derived from remote sensing. We further discuss the mechanisms of trophic control in regulating this relationship. The results show a significant non-linear relationship exists between standardized CPUE (Catch-Per-Unit-Effort) and NPP (P<0.05). This relationship can be described by a convex parabolic curve, where the biomass of chub mackerel increases with NPP to a maximum and then decreases when the NPP exceeds this point. The results imply that the ecosystem in the SECS is subject to complex trophic controls. We speculate that the change in abundance of key species at intermediate trophic levels and/or interspecific competition might contribute to this complex relationship.
中文摘要:
      鱼类生物量是渔业资源评估与管理的一个关键参数,并常利用海洋初级生产力数据进行估计。但由于海洋生态系统中的营养控制机制具有多样性,这使海洋初级生产力与鱼类生物量的关系复杂化。本文利用中国大陆大型灯光围网渔业在东海南部渔场的日本鲐(Scomber japonicus)捕捞数据与海洋净初级生产力的遥感资料分析了鲐鱼生物量与净初级生产力的定量关系,并进一步讨论了该生态系统的营养控制机制。研究结果表明,净初级生产力与标准化CPUE(Catch-Per-Unit-Effort)呈显著非线性关系(P<0.05),且这种非线性关系表现为倒抛物线,即鲐鱼生物量随净初级生产力的增加而提高,但当净初级生产力进一步增加,鲐鱼生物量则呈下降趋势。净初级生产力与标准化CPUE呈显著的倒抛物线关系表明东海南部生态系统存在复杂的营养控制机制。我们推测中间营养层关键种的丰度变化或种间竞争是导致这种复杂营养关系存在的原因。
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