张硕,高世科,张虎,于雯雯,吴立珍,路吉坤,伏光辉

• 1:上海海洋大学海洋科学学院
• 2:江苏省海洋水产研究所
• 3:连云港市海域使用保护动态管理中心
• 4:连云港渔业发展促进中心

摘要(Abstract)：

【目的】分析与对比2014/2018年海州湾同种生物的营养级特征。【方法】根据2018年9月海州湾海洋牧场区渔业资源调查,应用稳定同位素方法计算主要生物的δ~(13)C、δ~(15)N值及营养级,运用系统聚类分析划分主要营养类群(Trophic Group, TG)。【结果】鱼类、虾蟹类、头足类和贝类,营养级范围分别为2.6～4.1、2.7～3.6、2.9～3.3和2.0～3.0。该海域的拖网渔获物可分为3大类群:TG1包括大多数生物类群,由鱼、虾、蟹类和头足类组成;TG2主要为高营养级消费者,包括斑尾刺鰕虎鱼Acanthogobius ommaturus和四指马鲅Eleutheronema tetradactylu;TG3为初级消费者。【结论】2018年海州湾海洋牧场区域同种生物的营养级较2014年明显变高,但也有个别种类的营养级出现不同程度的降低。

关键词(KeyWords)： 海州湾;海洋牧场;稳定同位素;营养级

Abstract:

Keywords:

基金项目(Foundation): 江苏省自然科学基金青年基金(BK20170438);; 南通市科技计划项目(JC2018014)

作者(Author): 张硕,高世科,张虎,于雯雯,吴立珍,路吉坤,伏光辉

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