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应用稳定同位素技术评价大连近岸海域食物网营养结构

王荦,杜双成,杨婷越,常亚青*   

  1. (大连海洋大学水产与生命学院, 农业部北方海水增养殖重点实验室, 大连 116023)
  • 出版日期:2017-05-10 发布日期:2017-05-10

Using stable isotopes to evaluate food web structure in Dalian coastal water.

WANG Luo, DU Shuang-cheng, YANG Ting-yue, CHANG Ya-qing*#br#   

  1. (Key Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 116023, China).
  • Online:2017-05-10 Published:2017-05-10

摘要: 为了探明大连近岸北黄海海域食物网主要生物类群间的营养关系,应用稳定同位素技术分析测定该海域主要生物样品碳氮稳定同位素比值,计算主要生物类群营养层次,构建食物网结构。结果表明:大连近岸北黄海海域主要生物资源种类营养级处于1.85~4.06;其中,多毛类营养级为2.46~2.75,棘皮动物营养级为2.23~3.37,头足类营养级为2.82~3.36,腹足类营养级为2.00~3.27,双壳类营养级为1.85~2.44,甲壳类营养级为2.50~3.30,鱼类营养级为2.64~4.06;营养结构特征显示,初级消费者主要为贝类等软体动物,次级消费者主要为虾蟹类无脊椎动物,顶级捕食者主要为头足类、杂食性及肉食性鱼类。

关键词: 预案模拟, 景观格局, 三江平原, CLUE-S模型

Abstract: Food web structure in Dalian coast was constructed using stable isotopes to evaluate the trophic relationships among biological taxa. The trophic levels of organisms in Dalian coastal area, as a whole, ranged from 1.85 to 4.06, that is, 2.46-2.75 for polychaetes, 2.23-3.37 for echinodermata, 2.82-3.36 for cephalopoda, 2.00-3.27 for gasteropod, 1.85-2.44 for bivalve, 2.50-3.30 for crustacea, and 2.64-4.06 for fish, respectively. The characteristic of trophic level showed that the primary consumers were mainly mollusks such as bivalve, the secondary consumers were composed of invertebrate, and the top predators were cephalopoda, omnivorous and carnivorous fishes, respectively.

Key words: scenario simulation., the Sanjiang Plain, landscape pattern, CLUE-S Model