| 韭山列岛海域虾类群落结构与海洋环境因子的关系 |
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| 引用本文： | 卢衎尔,朱文斌,梁君,李德伟,戴乾,卢占晖,徐开达.韭山列岛海域虾类群落结构与海洋环境因子的关系[J].浙江大学学报(理学版),2019,46(1):65-77. |
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| 作者姓名： | 卢衎尔 朱文斌 梁君 李德伟 戴乾 卢占晖 徐开达 |
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| 作者单位： | 1.浙江省海洋水产研究所 渔业资源与生态研究室，浙江 舟山 316021
2.浙江省海洋渔业资源可持续利用技术研究重点实验室，浙江 舟山 316021 |
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| 基金项目： | 农业部项目（农财发[2017]36号）;浙江省科技研发项目（2019C02056）；国家重点研发计划资助项目（2018YFD0900904）;国家自然科学基金资助项目（31702346）；浙江省科技计划项目(2017C32031);浙江省科技厅项目（2017F50015）. |
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| 摘 要： | 根据韭山列岛海域2015年11月（秋）、2016年2月（冬）、5月（春）、8月（夏）的调查资料，运用相对重要性指数（index of relative importance， IRI）、冗余分析（redundancy analysis， RDA）、数量生物量曲线（Abundance-biomass comparison curve，简称ABC曲线）及W统计量（W-statistics）等方法，分析了该海域优势种虾类及其与环境因子的关系。结果表明，保护区共调查到暖温、暖水性虾类16种，隶属于8科12属；其中，各季节优势种（IRI > 1 000）变化明显。虾类相对资源密度呈春、秋季高，夏、冬季低的季节性分布。秋季主要优势种为安氏白虾（Exopalaemon annandalei）和葛氏长臂虾（Palaemon gravieri），虾类群落的分布主要受底层水温影响（r2 = 0.726 2，P = 0.001）；冬季优势种主要为鲜明鼓虾（Alpheus distinguendus）、葛氏长臂虾和日本鼓虾（Alpheus japonicus），此季节虾类的分布主要受水深的影响（r2 = 0.543 7，P = 0.009）；春季优势种为日本鼓虾和细巧仿对虾（Parapenaeopsis tenella），此时物种的分布与表层环境因子关系密切；夏季优势种以哈氏仿对虾（Parapenaeopsis hardwickii）和中华管鞭虾（Solenocera crassicornis）为主，此时研究海域环境较为稳定，环境因子整体对虾类群落的分布影响显著（P = 0.008）。4个季节W统计值均小于1，其变化范围为-1.772×10-3～-2.47×10-4。秋、冬和春季数量优势度曲线高于生物量优势度曲线，表明虾类群落受干扰较为严重；而夏季两曲线相交，受干扰情况较另外3个季节有所好转。通过比较数量、生物量优势度曲线斜率，还可以推测虾类的体型大小：当相邻两排序物种在生物量优势度曲线上对应值连线的斜率大于数量优势度曲线上对应值连线的斜率时，该物种个体相对较大，反之较小。进而可推知：当物种数量足够多时，可通过比较某一物种在生物量优势度曲线和数量优势度曲线上对应处切线的斜率判断个体的相对大小。
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| 关 键 词： | 韭山列岛海域 虾类群落结构 相对重要性指数 RDA分析 ABC曲线 |
| 收稿时间： | 2018-06-04 |
The relationship between shrimps community structure and environmental factors in Jiushan Islands waters |
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| LU Kaner,ZHU Wenbing,LIANG Jun,LI Dewei,DAI Qian,LU Zhanhui,XU Kaida.The relationship between shrimps community structure and environmental factors in Jiushan Islands waters[J].Journal of Zhejiang University(Sciences Edition),2019,46(1):65-77. |
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| Authors: | LU Kaner ZHU Wenbing LIANG Jun LI Dewei DAI Qian LU Zhanhui XU Kaida |
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| Affiliation: | 1.Marine Fishery Research Institute of Zhejiang Research Department of Fisher Resources and Ecology, Zhoushan 316021, Zhejiang Province, China
2.Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, Zhejiang Province, China |
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| Abstract: | Based on the shrimps data (species, numbers and weights) collected in the Jiushan Islands waters in November (autumn) 2015 and February (winter), May (spring) and August (summer) of 2016, we jointly apply the quantitative and qualitative methods, including the index of relative importance (IRI), redundancy analysis (RDA), W-statistics, RDA ordination and abundance-biomass comparison curve (ABC curve), to explore the relationship between shrimps community and marine environment. The Results show that there are 16 warm-temperate and warm-water species in total captured in the investigated area, belonging to 8 families and 12 genera; The relative shrimp resources vary with season, shrimp biomass in spring and autumn are higher compared to that in summer and winter. Dominant species (IRI > 100 0) vary with season as well: Exopalaemon annandalei and Palaemon gravieri are dominant species in autumn. RDA ordination result shows that the bottom seawater temperature is the major impact factor (r2 = 0.726 2，P = 0.001) to the spread of shrimps community. In winter, Alpheus distinguendus, Palaemon gravieri and Alpheus japonicus are the dominant species, and depth is the predominant impact factor (r2 = 0.543 7，P = 0.009) according to RDA ordination result. Dominant species in spring are Alpheus japonicus and Parapenaeopsis tenella, and the RDA ordination result also indicates that surface marine environment factors are the most influential factors. Parapenaeopsis hardwickii and Solenocera crassicornis are the dominant species in summer, and the homogeneity of marine environment in coastal waters affects the spread of shrimps community (P = 0.008). The W-statistics values of each season are between －1.772×10－3 and －2.47×10－4. In autumn, winter and spring, the abundance curve is above the biomass curve, indicating that shrimps community is under inferences. The intersection of abundance and biomass curves in summer shows an upward turn of interferences. The size of shrimp species could be inferred by slope from ABC. The size of one species was relatively bigger when the slope of the line connecting the corresponding values of the adjacent two species on the biomass curve is greater than that of the line connecting the corresponding values on the abundance curve, and vice versa. Furthermore, when the number of species increases, the size of one species can be inferred by comparing the slopes of tangent lines connecting the corresponding values on biomass and abundance curves. |
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| Keywords: | Jiushan Islands waters shrimps community structure index of relative importance (IRI) redundancy analysis (RDA) abundance-biomass comparison curve (ABC) |
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