文章摘要
黄海秋季鱼类群落关键种的年代际变化
Inter-decadal Changes in Keystone Species in Fish Community in Autumn in Yellow Sea
投稿时间:2020-05-25  修订日期:2020-06-15
DOI:
中文关键词: 黄海  鱼类群落  食物网拓扑结构  网络分析法  关键种
英文关键词: Yellow Sea  Fish community  Food-web topological structure  Network analysis  Keystone species
基金项目:国家自然科学基金项目(31872692)、山东省支持青岛海洋科学与技术试点国家实验室重大科技专项(2018SDKJ0501-1)、山东省泰山学者专项基金和中央级公益性科研院所基本科研业务费(2019GH16)
作者单位E-mail
苏程程 上海海洋大学 13335088169@163.com 
单秀娟 中国水产科学研究院黄海水产研究所 shanxj@ysfri.ac.cn 
杨涛 中国水产科学研究院黄海水产研究所  
韩青鹏 中国海洋大学  
摘要点击次数: 199
全文下载次数: 0
中文摘要:
      关键种直接或间接调控着群落结构和影响群落中其他物种的分布,在维持群落结构稳定性和多样性发挥着重要作用。本研究基于1985年、2001年、2010年和2018年秋季黄海渔业资源调查数据,构建了黄海鱼类群落食物网拓扑结构,分析黄海鱼类群落关键种的年代际变化。1985~2018年黄海鱼类食物网,包含物种67~103个,摄食关系数量300~449个,食物网拓扑结构密度范围为0.198~0.227,种间关联度为0.044~0.074,符合自然条件下的群落种间摄食关系。1985~2018年黄海秋季鱼类群落关键种为鳀(Engraulis japonicus)、黄鮟鱇(Lophius litulon)和小黄鱼(Larimichthys polyactis)。秋季黄海关键种并未发生变化,鳀作为关键被捕食者,小黄鱼是控制群落离散变量的物种,两者资源衰退,黄鮟鱇作为关键捕食者,其相对资源量上升。1985年~2018年,秋季黄海优势种变化明显,由黄鮟鱇和银鲳(Pampus argenteus)转变为龙头鱼(Harpadon nehereus)、细纹狮子鱼(Liparis tanakae)和鳀;以重量和数量计算的丰富度指数(Rw,Rn)、多样性指数(H’w,H’n)逐步降低,2018年以后显著回升,均匀度指数(J’w,J’n)波动较小。近30年,秋季黄海关键种没有变化,但优势种变化明显,群落结构有波动但仍处于较稳定状态。
英文摘要:
      Keystone species play an important role in community structural stability and diversity changes. Therefore, based on the survey data of the Yellow Sea fishery resources in the autumn of 1985, 2001, 2010 and 2018, in this study, we constructed the topological structure of the food-web network of the Yellow Sea fish community and analyzed the inter-decadal changes of keystone species in the Yellow Sea fish community. The constructed food webs included 67~103 different fish species and 300~449 prey-predator relationships. The structural density of these food webs ranged from 0.198 to 0.227, and interspecies connectivity ranged between 0.044 and 0.074, which matched the ecology of fish communities under natural conditions. The keystone species of the autumn fish community in the Yellow Sea from 1985 to 2018 were Engraulis japonicus, Lophius litulon, and Larimichthys polyactis. The keystone fish species in the Yellow Sea has not changed for nearly 30 years. E. japonicus as the keystone prey, and L. litulon is a species that controls the discrete variables of the diversity, both resources decline. As the keystone predator, L. polyactis relative resources have gradually increased. From 1985 to 2018, the dominant species in the Yellow Sea changed significantly in the autumn, from L. polyactis and Pampus argenteus, gradually shifted to Harpadon nehereus, Liparis tanakae, and E. japonicus. The Margalef richness index (Rw, Rn), Shannon diversity index (H""w, H""n) calculated by weight and quantity have gradually decreased, and have rebounded significantly in 2018, and Pielou evenness index (J""w, J""n) fluctuated slightly. The keystone species in the Yellow Sea did not change in autumn, but the dominant species changed significantly, while the community structure fluctuated slightly but still remained in a relatively stable state.
相关附件:   附件1  附件2  修改说明
View Fulltext   查看/发表评论  下载PDF阅读器
关闭