大陈洋产卵场保护区鱼类群落结构特征及其与环境因子的关系
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S 932.4

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国家重点研发计划(2018YFD0900903);浙江省公益性技术应用研究项目(LGN20C190012);浙江省重点研发计划项目(2019C02056);大陈洋产卵场保护区资源监测及养护效果服务采购项目


Characteristics of fish community structure and its relationship with environmental factors in Dachenyang spawning ground reserve
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    摘要:

    为了解大陈洋产卵场保护区的保护效果,基于2018年4月(春季)和11月(秋季)在大陈洋产卵场保护区的渔业资源调查数据,利用相对重要性指数(IRI)、多样性分析、聚类分析和典范对应分析(CCA)等方法,对该海域鱼类群落结构特征及其与环境因子的关系进行了相关分析。结果显示,共捕获鱼类83种,隶属于9目51科,其中优势种鱼类2种,重要种18种,隶属于5目11科,优势种为六丝钝尾虾虎鱼和龙头鱼。等级聚类(CLUSTER)和非度量多维测度(NMDS)分析表明,春、秋季鱼类群落在空间上均可分为3组,且群落组间差异显著,龙头鱼、七星底灯鱼、赤鼻棱鳀等是影响群落结构季节变化的主要分歧种。ABC曲线分析表明,春季鱼类群落受到中度干扰(W=0.027);秋季鱼类群落处于较为严重干扰状态(W=−0.185)。典范对应(CCA)分析表明,水深、温度和盐度为影响该海域鱼类种类组成及群落结构时空变化的重要海洋理化因子。与2015年和2017年同期资源量相比,2018年11月生物量和丰度均大幅增加。研究表明,保护区的建立对渔业资源恢复起到了一定的保护作用,但想要将海洋资源恢复到理想状态,需要进行长久的资源保护。

    Abstract:

    To understand the protection effect of Dachenyang spawning ground reserve, based on the survey data of fishery resources in the Dachenyang Spawning Ground Reserve in April (spring) and November (autumn) 2018, relative importance index (IRI), diversity analysis, cluster analysis, canonical correspondence analysis (CCA) and other methods were used to analyze the characteristics of fish community structure in this sea area and its relationship with environmental factors. The results showed that: a total of 83 species of fish were caught, belonging to 9 orders and 51 families, including 2 dominant species of fish, 18 important species of fish, belonging to 5 orders and 11 families, and the dominant species were Amblychaeturichthys hexanema and Harpodon nehereus. Hierarchical clustering (CLUSTER) and non-metric multidimensional measures (NMDS) analysis showed that the spring and autumn fish communities can be divided into 3 groups spatially, and there are significant differences between the community groups (P<0.05). H. nehereus, Benthosema pterotum and Thryssa kammalensis were the main divergent species that affect the seasonal changes of community structure. ABC curve analysis showed that the fish community in spring was moderately disturbed (W=0.027); the fish community in autumn was in a state of severe disturbance (W=–0.185). Canonical Correspondence (CCA) analysis shows that water depth, temperature and salinity are important marine physical and chemical factors that affect the composition of fish species and the temporal and spatial changes of community structure in this sea area.Compared with the resources in the same period in 2015 and 2017, both biomass and abundance increased significantly in November 2018. This study found that the establishment of protected areas played a protective role in the recovery of fishery resources, but long-term resource protection was needed to restore marine resources to an ideal state.

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RUI Yin, JIANG Rijin, WANG Haoxue, LUAN Huini, YIN Rui, ZHU Yudan, ZHANG Linlin. Characteristics of fish community structure and its relationship with environmental factors in Dachenyang spawning ground reserve[J]. Journal of Fisheries of China,2022,46(6):995~1007

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  • 收稿日期:2020-09-27
  • 最后修改日期:2021-04-13
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  • 在线发布日期: 2022-06-18
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