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    于南京,俞存根,許永久,陳立紅,許恒濤,王慧君,張佩怡,劉坤.舟山群島外海域魚類數量分布與環境因子的關系[J].海洋學報,2020,42(10):80-91
    舟山群島外海域魚類數量分布與環境因子的關系
    The relationship between distribution of fish abundance and environmental factors in the outer waters of the Zhoushan Islands
    投稿時間:2019-10-11  修訂日期:2020-05-05
    DOI:10.3969/j.issn.0253-4193.2020.10.008
    中文關鍵詞:  種類組成  環境因子  資源密度  典范對應分析
    英文關鍵詞:species composition  environmental factors  resource density  CCA
    基金項目:國家自然科學基金項目(31270527)。
    作者單位E-mail
    于南京 浙江海洋大學 水產學院,浙江 舟山 316022  
    俞存根 浙江海洋大學 水產學院,浙江 舟山 316022 cgyu@zjou.edu.cn 
    許永久 浙江海洋大學 水產學院,浙江 舟山 316022  
    陳立紅 自然資源部第二海洋研究所,浙江 杭州 310012  
    許恒濤 自然資源部第二海洋研究所,浙江 杭州 310012  
    王慧君 浙江海洋大學 水產學院,浙江 舟山 316022  
    張佩怡 浙江海洋大學 水產學院,浙江 舟山 316022  
    劉坤 浙江海洋大學 水產學院,浙江 舟山 316022  
    摘要點擊次數: 1284
    全文下載次數: 4228
    中文摘要:
          根據2018年4月(春季)和10月(秋季)在舟山群島外海域進行的漁業資源調查資料,分析了魚類的種類組成、數量分布和優勢種,并用典范對應分析方法分析了其與水文環境之間的關系。結果表明,舟山群島外海域魚類有106種,隸屬于12目47科80屬,春、秋季魚類質量密度分別為210.50 kg/km2和829.06 kg/km2,尾數密度分別為8.08×103 ind/km2和165.94×103 ind/km2。春季魚類資源密度在調查海域的西北部較高,東部較低,而秋季魚類資源密度在東部海域較高,西北部海域較低。兩個季節的魚類優勢種更替明顯,春季優勢種為黃鮟鱇(Lophius litulon)、日本紅娘魚(Lepidotrigla japonica)、細條天竺鯛(Apogon lineatus),秋季為細條天竺鯛、日本發光鯛(Acropom japonicum)。魚類種數呈現顯著的季節和空間變化,但是都以西部以及西北部靠近近岸島嶼的海域種類數較高,大部分魚類棲息在50~80 m水深海域。典范對應分析結果表明,表層溫度、底層溫度、表層鹽度是影響調查海域魚類種類組成和數量分布的主要環境因子。
    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 litulon、Lepidotrig lajaponica、Apogon lineatus and Apogon lineatus、Acropom 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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