摘要
食物网结构特征和能量流动的研究,对于维持海洋生态系统结构和功能的稳定具有重要意义,有助于深入理解海洋生态系统的复杂过程。本研究基于2019-2021年在江苏近海北部海域开展的季节性渔业资源底拖网调查数据,通过构建基于蒙特卡罗马尔科夫链算法的逆线性模型(Linear Inverse Models using a Monte Carlo Method Coupled with Markov Chain, LIM-MCMC),结合生态网络分析(Ecological Network Analysis,ENA)的方法,分析了该海域生态系统状态和食物网能量流动特征,旨在为江苏近海北部海域食物网营养动力学研究提供参考依据。结果表明,该海域生态系统共包含299条能量流动路径,能量流动分布整体呈典型的金字塔结构,各功能群呼吸消耗和流入有机碎屑的能量保持同步性。通过与其他海域比较发现,江苏近海北部海域生态系统的连接指数(Connectance,C)和系统杂食指数(System Omnivory Index,SOI)分别为0.40和0.22,处于较高水平,表明该生态系统不同营养级间的营养联系较为紧密,食物网结构相对复杂,能够在较大程度上抵御外界扰动。总初级生产力/总呼吸(Total Primary Production/Total Respiration,TPP/TR)和Finn’s循环指数(Finn’s Cycling Index,FCI)分别为1.05和5.76%,表明该生态系统对能量利用效率较高。此外,约束效率(Constraint Efficiency,CE)、发展程度(Extent of Development,AC)、协同效应指数(Synergism Index,b/c)和主导间接效应(Dominance Indirect Effects,i/d)也表明该生态系统具有较高的系统发展程度、再生潜力和系统发展空间。本研究将有助于为江苏近海北部海域生态系统的修复和渔业资源的可持续利用提供理论基础,为实施基于生态系统的渔业管理提供科学依据。
Study on the structure and energy flow of food webs is important for maintaining the stability of struc-ture and function of marine ecosystems,which will contribute to the in-depth understanding of the complex pro-cesses of marine ecosystems.Based on the seasonal bottom trawl survey data in the northern waters of Jiangsu Province from 2019-2021,a linear inverse models using a Monte Carlo method coupled with Markov chain model combined with ecological network analysis(ENA)were used to explore the status of the ecosystem and energy flow characteristics of the food web in this area.The results showed that there were 299 energy flow paths in the ecosys-tem,which showed a typical pyramid structure.In addition,the energy consumed by respiration and the energy flowing into the detritus of each functional group remains synchronized.Compared with other sea areas,connect-ance(C)and system omnivory index(SOI)were 0.40 and 0.22,respectively,which were at relatively high levels,indicating that organisms from different trophic levels in this ecosystem were closely connected.It has a relatively complex food web structure,which can resist external disturbance.Total primary production/total respiration(TPP/TR)and Finn’s cycling index(FCI)were 1.05 and 5.76%,respectively,indicating that the ecosystem was rel-atively mature and used energy efficiently.In addition,constraint efficiency(CE),extent of development(AC),syn-ergism index(b/c)and dominance indirect effects(i/d)also indicated high potential for development and regenera-tion.This study will provide a theoretical basis for the restoration and sustainable utilization of fishery resources in the northern waters of Jiangsu Povince,and provide a scientific basis for the implementation of Ecosystem-based fishery management in this area.
作者
张虎
李鹏程
胡海生
薛莹
袁健美
贲成恺
祝超文
肖悦悦
祖凯伟
Zhang Hu;Li Pengcheng;Hu Haisheng;Xue Ying;Yuan Jianmei;Ben Chengkai;Zhu Chaowen;Xiao Yueyue;Zu Kaiwei(Jiangsu Marine Fisheries Research Institute,Nantong 226007,China;Fisheries College,Ocean University of China,Qingdao 266003,China)
出处
《海洋学报》
CAS
CSCD
北大核心
2023年第9期105-118,共14页
基金
2022年度江苏省农业生态保护与资源利用专项—渔业生态与资源监测(2022-SJ-061-01)
2021年度江苏省农业生态保护与资源利用专项—渔业生态与资源监测(2021-SJ-110-02)。
关键词
LIM-MCMC模型
生态网络分析
能量流动
生态系统特征
食物网
linear inverse models using a Monte Carlo method coupled with Markov chain
ecological network analysis
energy flows
ecosystem characteristics
food web
