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于南京,俞存根,许永久,陈立红,许恒涛,王慧君,张佩怡,刘坤.舟山群岛外海域鱼类数量分布与环境因子的关系[J].海洋学报,2020,42(10):80-91
舟山群岛外海域鱼类数量分布与环境因子的关系
The relationship between distribution of fish abundance and environmental factors in the outer waters of the Zhoushan Islands
投稿时间:2019-10-11  修订日期:2020-05-05
DOI:10.3969/j.issn.0253-4193.2020.10.008
中文关键词:  种类组成  环境因子  资源密度  典范对应分析
英文关键词:species composition  environmental factors  resource density  CCA
基金项目:国家自然科学基金项目(31270527)。
作者单位E-mail
于南京 浙江海洋大学 水产学院浙江 舟山 316022  
俞存根 浙江海洋大学 水产学院浙江 舟山 316022 cgyu@zjou.edu.cn 
许永久 浙江海洋大学 水产学院浙江 舟山 316022  
陈立红 自然资源部第二海洋研究所浙江 杭州 310012  
许恒涛 自然资源部第二海洋研究所浙江 杭州 310012  
王慧君 浙江海洋大学 水产学院浙江 舟山 316022  
张佩怡 浙江海洋大学 水产学院浙江 舟山 316022  
刘坤 浙江海洋大学 水产学院浙江 舟山 316022  
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中文摘要:
      根据2018年4月(春季)和10月(秋季)在舟山群岛外海域进行的渔业资源调查资料,分析了鱼类的种类组成、数量分布和优势种,并用典范对应分析方法分析了其与水文环境之间的关系。结果表明,舟山群岛外海域鱼类有106种,隶属于12目47科80属,春、秋季鱼类质量密度分别为210.50 kg/km2和829.06 kg/km2,尾数密度分别为8.08×103 ind/km2和165.94×103 ind/km2。春季鱼类资源密度在调查海域的西北部较高,东部较低,而秋季鱼类资源密度在东部海域较高,西北部海域较低。两个季节的鱼类优势种更替明显,春季优势种为黄鮟鱇(Lophius litulon)、日本红娘鱼(Lepidotrigla japonica)、细条天竺鲷(Apogon lineatus),秋季为细条天竺鲷、日本发光鲷(Acropom japonicum)。鱼类种数呈现显著的季节和空间变化,但是都以西部以及西北部靠近近岸岛屿的海域种类数较高,大部分鱼类栖息在50~80 m水深海域。典范对应分析结果表明,表层温度、底层温度、表层盐度是影响调查海域鱼类种类组成和数量分布的主要环境因子。
英文摘要:
      Based on the fishery resources survey data in the outer waters of the Zhoushan Islands in April (spring) and October (autumn) 2018, the composition, quantity distribution and dominant species of fishes were analyzed, and the relationship between them and hydrological environment was analyzed by the CCA method. The results showed that there were 106 species of fish in the waters outside Zhoushan Islands, belonging to 12 orders, 47 families and 80 genera. The fish mass densities in spring and autumn are 210.50 kg/km2 and 829.06 kg/km2 respectively, and the abundance densities are 8.08×103 ind/km2 and 165.94×103 ind/km2 respectively. The density of fish resources in spring is higher in the northwest sea area and lower in the east sea area of the investigated sea area, while the density of fish resources in autumn is higher in the east sea area and lower in the northwest sea area. The dominant species of fish change substantially between the two seasons. The dominant species in spring and autumn were Lophius litulonLepidotrig lajaponicaApogon lineatus and Apogon lineatusAcropom japonicum. The number of fish species showed significant seasonal and spatial changes, and the number of fish species is higher in the west and northwest near the coastal islands, with most fishes inhabiting in waters with water depth of 50-80 m. The results showed that the spatial and temporal separations of fish communities were obtained from CCA analysis. Surface temperature, bottom temperature and surface salinity were the key environmental factors that affected the composition and quantity distribution of fish species in the sea area under investigation. The strong correlation between fish community and environmental factors reflected the climate change effect on the separation of fish species.
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