海州湾底层鱼类物种多样性与生物量的关系  

Relationship between species diversity and biomass of demersal fish in Haizhou Bay

作　　者：万勇慧 刘淑德 张崇良[1,2] 纪毓鹏 徐宾铎[1,2] 薛莹 Wan Yonghui;Liu Shude;Zhang Chongiang;Ji Yupeng;Xu Binduo;Xue Ying(Fisheries College, Ocean University of China, Qingdao 266003, China;Field Observation and Research Station of Haizhou Bay Fish-ery Ecosystem, Ministry of Education, Qingdao 266003, China;Shandong Fishery Development and Resource Conservation Station,Yantai 264003, China)

机构地区：[1]中国海洋大学水产学院,山东青岛266003 [2]海州湾渔业生态系统教育部野外科学观测研究站,山东青岛266003 [3]山东省渔业发展和资源养护总站,山东烟台264003

出　　处：《海洋学报》2023年第9期82-90,共9页

基　　金：国家重点研发计划重点专项(2022YFD2401301)。

摘　　要：随着生物多样性的丧失,全球许多海洋生态系统的功能发生了显著变化。为了解生物多样性和生态系统功能之间的关系,科学的海洋生态保护与管理显得尤为重要。本研究根据2013-2022年春季在海州湾及其邻近海域进行的底拖网调查数据,基于结构方程模型(SEM)探究了底栖鱼类群落中环境因素、生物多样性(物种丰富度与均匀度)和生态系统功能指标(以总生物量表示)之间的关系。结果表明:物种丰富度和生物量之间存在显著的正相关,而均匀度和生物量存在显著的负相关。环境因素中盐度对物种丰富度和生物量均有显著的影响,而对于温度来说,夏季与冬季的温度比年平均温度对生物量的影响更强烈。本研究表明,生态位互补效应和选择效应这两种机制可能同时对维持海州湾底层鱼类群落中的生物多样性-生物量关系发挥了作用,此外这种关系还依赖于它们所生存的环境和栖息条件。Many of the global ecosystem functions are changing with the loss of biodiversity.It is therefore particu-larly important to understand the biodiversity-ecosystem functioning(BEF)relationships to support scientific ecolo-gical conservation and management.In this study,we evaluated the relationship between environmental factors,biodiversity(species richness and evenness)and ecosystem functions(measured as total biomass)in the benthic fish community of Haizhou Bay,using structural equation modeling(SEM)based on bottom trawl survey data con-ducted in spring 2013-2022.The results showed that there was a significant positive correlation between species richness and biomass,and a significant negative correlation between evenness and biomass.Among the environ-mental factors,salinity had significant effects on both species richness and biomass.Regarding the effects of tem-perature,the temperatures in winter and summer had a stronger effect on biomass than that of annual average tem-perature.The study suggested that two mechanisms,the niche complementarity mechanism and selection mechan-ism,may simultaneously play a role in maintaining the biodiversity-biomass relationships in the groundfish com-munities of Haizhou Bay,and in addition to the fact that such relationships depend on the environmental and habit-at conditions.

关 键 词：生物多样性 生态系统功能 结构方程模型 生物量 生态位互补效应 选择效应 底层鱼类 

分 类 号：P714.5[天文地球—海洋科学] S932.4[农业科学—渔业资源]