收稿日期: 2019-01-30
修回日期: 2019-03-20
网络出版日期: 2019-07-04
基金资助
国家自然科学基金重点项目“热带海草床食物链有机碳传递过程及其对富营养化的响应机制”(编号：41730529)
Research Progress of the Transfer Process of Organic Carbon Through Food Chain in Seagrass Bed
Received date: 2019-01-30
Revised date: 2019-03-20
Online published: 2019-07-04
Supported by
Project supported by the National Natural Science Foundation of China “The transfer process of organic carbon through food chain in tropical seagrass bed and its response to eutrophication”(No. 41730529)
海草床是重要的近海生态系统，生产力极高，可为海洋动物提供良好的栖息地和丰富的有机碳食源；人类活动引起近岸海域的富营养化，可能会改变海草床有机碳源组成和性质，进而影响植食动物和次级消费者的摄食过程及其食物链能量传递效率，从而影响海草床的生物资源产出功能。归纳总结了国内外海草床食物链碳传递过程各方面的研究进展，主要包括：
黄小平 , 江志坚 . 海草床食物链有机碳传递过程的研究进展[J]. 地球科学进展, 2019 , 34(5) : 480 -487 . DOI: 10.11867/j.issn.1001-8166.2019.05.0480
Seagrass beds are highly productive coastal ecosystems, which provide good nursery habitat and abundant Organic Carbon Sources (OCS) as food for marine animals. Human activities have led to widespread eutrophication in coastal areas. Eutrophication may alter the composition and properties of OCS, thereby affecting the feeding process of herbivores and secondary consumer, and energy transfer efficiency in food chain. This may affect the production function of biological resource in seagrass beds. Based on the summary of the foreign and domestic researches, primary achievements were systematically reviewed in this paper in five aspects: the composition of OCS and their contribution, feeding process of herbivore, food web structure and energy transfer efficiency, and their responses to eutrophication. Future researches that should be emphasized were also prospected. With the combined application of stable isotope analysis for bulks and tissues, fatty acid biomarkers and compound-specific stable isotope analysis, the quantitative study of the contribution of OCS, food web structure, key carbon flow pathway and their seasonal change patterns should be enhanced. Meanwhile, the differences of OCS between larval and adult stages of key consumers will need to be further examined to clarify the transformation of their feeding habits. Through field investigation, in-situ mesocosm and laboratory simulation experiments, the effects of nutrient increase on the structure (seagrass and epiphyte, etc.) and chemical composition (nutritional quality and secondary compounds, etc.) of OCS, the response of feeding process of herbivore and secondary consumer to the alteration of chemical compounds in primary producers, and the response mechanism of carbon transfer efficiency of the grazing food chain and detritus food chain need to be further studied.
Key words： Seagrass beds; Food chain; Organic carbon; Transfer; Eutrophication.
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