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应用生态学报 ›› 2018, Vol. 29 ›› Issue (5): 1489-1493.doi: 10.13287/j.1001-9332.201805.019

• 稳定同位素生态学专栏 • 上一篇    下一篇

马鞍列岛海洋牧场褐菖鲉和小黄鱼营养生态位差异

李朝文1, 王凯1, 程晓鹏1, 章守宇1*, 张云岭2   

  1. 上海海洋大学海洋生态与环境学院, 上海 201306;
    2河北省近海生态修复工程技术研究中心, 河北唐山 063610
  • 收稿日期:2018-01-03 出版日期:2018-05-18 发布日期:2018-05-18
  • 通讯作者: *E-mail: syzhang@shou.edu.cn
  • 作者简介:李朝文,男,1991年生,硕士研究生.主要从事海洋牧场和摄食生态学研究. E-mail: wm_dan@163.com
  • 基金资助:
    本文由国家自然科学基金项目(41406153,41176110,41606146)、现代农业产业技术体系专项资金(CARS-50)和公益性行业(农业)科研专项经费(201303047,201003068)资助

Difference of trophic niche between Sebastiscus marmoratus and Larimichthys polyactis in marine ranching of Ma’an Archipelago, China.

LI Chao-wen1, WANG Kai1, CHENG Xiao-peng1, ZHANG Shou-yu1*, ZHANG Yun-ling2   

  1. 1College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China;
    2Hebei Provincial Research Institute for Engineering Technology of Coastal Ecology Rehabilitation, Tangshan 063610, Hebei, China
  • Received:2018-01-03 Online:2018-05-18 Published:2018-05-18
  • Contact: *E-mail: syzhang@shou.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (41406153, 41176110,41606146), the Special Fund for China Agriculture Research System (CARS-50) and the Special Fund for Agro-scientific Research in the Public Interest (201303047, 201003068)

摘要: 海洋牧场是近岸渔业资源保护和恢复的有效途径,为评估海洋牧场建设对褐菖鲉和小黄鱼营养生态位和种间竞争关系的影响,基于2013年和2016年调查的碳氮稳定同位素数据,分析种内营养生态位变化趋势与种间竞争的关系.结果表明: 从2013年到2016年海洋牧场区褐菖鲉和小黄鱼种内营养生态位明显增大,凸多边形总面积(TA)营养生态位分别由1.89和0.34增加到12.43和8.86,两者的种间生态位重叠面积由 0.13 增加到7.69;标准椭圆营养生态位分别由1.11和0.14增加到4.94和4.06,两者的种间生态位重叠面积由0增加到0.26.随时间变化,褐菖鲉和小黄鱼δ13C和δ15N呈减小趋势,且δ13C值差异显著,δ15N不显著,两者的种间饵料重叠度从68.9%增加到90.6%.

Abstract: Marine ranching is an effective way to protect and restore coastal fishery resources. In order to assess the impacts of marine ranching construction on the trophic niches and interspecific competition of Sebastiscus marmoratus and Larimichthys polyactis, we analyzed the relationship between the changes of intraspecies trophic niche and the interspecific competition, based on the carbon and nitrogen stable isotope data of these two species collected from 2013 to 2016. The results showed that the intraspecies trophic niches of both species increased significantly in marine ranching area from 2013 to 2016. The total area of the convex polygon (TA) niche increased from 1.89 to 12.43 for S. marmoratus, and increased from 0.34 and 8.86 for L. polyactis, with the interspecific niche overlap area of these two species increasing from 0.13 to 7.69. The standard elliptic trophic niche increased from 1.11 to 4.94 for S. marmoratus, and from 0.14 to 4.06 for L. polyactis, with the interspecific niche overlap area increasing from 0 to 0.26. Values of the δ13C and δ15N of both species showed a tendency of decreasing with time, with significant changes of δ13C, but non-signi-ficant for δ15N. Dietary overlap between those two species increased from 68.9% to 90.6%.