| 莱州湾渔业资源群落结构和多样性的年际变化 |
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| 作者姓名： | 杨尧尧 李忠义 吴 强 王 俊 |
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| 作者单位： | 农业部海洋渔业可持续发展重点实验室山东省渔业资源与生态环境重点实验室中国水产科学研究院黄海水产研究所 青岛266071;青岛海洋科学与技术国家实验室海洋渔业科学与食物产出过程功能实验室 青岛266071 |
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| 基金项目： | 农业部公益性行业科研专项(2013030503)、国家973项目(2015CB453303)、农业部黄渤海渔业资源环境重点野外科学观测试验站和山东省泰山学者工程专项共同资助 |
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| 摘 要： | 根据2009-2013年每年8月在莱州湾水域进行的渔业底拖网调查数据,采用生态多样性指数和多元统计分析等方法,研究了该海域的渔业资源群落结构和多样性特征的年际变化.结果显示,调查共鉴定出100种资源种类,其中鱼类56种;渔业资源种类和资源量存在明显的年际变化,2013年渔业资源种类数为2012年种类数的84.4％,仅为2009年的60.3％,平均网获质量明显下降.鱼类优势种组成存在年际更替现象,主要由经济价值高、个体大的种类向经济价值低、个体小的种类演替.各生态多样性指数均呈现下降趋势,Margalef种类丰富度指数(R)变化范围为2.67-3.95,Shannon-Wiener多样性指数(H')变化范围为0.70-3.83,Pielou均匀度指数(J')变化范围为0.12-0.63.聚类分析(CLUSTER)和多维标度分析(MDS)分析表明,在相同的相似性水平上分组,组内平均相似性与组间相异性变大.单因子相似性分析(ANOSIM)表明,各年渔业群落结构均存在显著差异(P＜0.05).综上所述,莱州湾渔业资源逐年衰退,优势种更替明显,群落结构发生明显变化,多样性呈下降趋势.
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| 关 键 词： | 莱州湾 群落结构 多样性 年际变化 |
| 收稿时间： | 2015/3/13 0:00:00 |
| 修稿时间： | 2015/6/2 0:00:00 |
Interannual Variations in Community Structure and Species Diversity of Fishery Resources in the Laizhou Bay |
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| Authors: | YANG Yaoyao LI Zhongyi WU Qiang and WANG Jun |
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| Affiliation: | Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071,Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071,Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 and Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071 |
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| Abstract: | |
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| Keywords: | Laizhou Bay Community structure Species diversity Interannual variations |
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