Chen Zhan Yan, Wu Hai Tao, Wang Yun Biao, Lyu Xian Guo
Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Aca-demy of Sciences, Changchun 130102, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Ying Yong Sheng Tai Xue Bao. 2017 Jul 18;28(7):2389-2398. doi: 10.13287/j.1001-9332.201707.027.
The trophic dynamics of wetland organisms is the basis of assessing wetland structure and function. Stable isotopes of carbon and nitrogen have been widely applied to identify trophic relationships in food source, food composition and food web transport in wetland ecosystem studies. This paper provided an overall review about the current methodology of isotope mixing model and trophic level in wetland ecosystems, and discussed the standards of trophic fractionation and baseline. Moreover, we characterized the typical food sources and isotopic compositions of wetland ecosystems, summarized the food sources in different trophic levels of herbivores, omnivores and carnivores based on stable isotopic analyses. We also discussed the limitations of stable isotopes in tra-cing food sources and in constructing food webs. Based on the current results, development trends and upcoming requirements, future studies should focus on sample treatment, conservation and trophic enrichment measurement in the wetland food web, as well as on combing a variety of methodologies including traditional stomach stuffing, molecular markers, and multiple isotopes.
湿地生物的营养动态是评估湿地结构和功能的基础。碳和氮的稳定同位素已被广泛应用于湿地生态系统研究中，以确定食物来源、食物组成和食物网传输中的营养关系。本文对湿地生态系统中同位素混合模型和营养级的当前方法进行了全面综述，并讨论了营养分馏和基线的标准。此外，我们描述了湿地生态系统的典型食物来源和同位素组成，基于稳定同位素分析总结了食草动物、杂食动物和食肉动物不同营养级的食物来源。我们还讨论了稳定同位素在追踪食物来源和构建食物网方面的局限性。基于当前的结果、发展趋势和未来需求，未来的研究应关注湿地食物网中的样本处理、保存和营养富集测量，以及结合包括传统胃内容物分析、分子标记和多种同位素在内的多种方法。
