| 摘要: |
| 摄食功能群是指生态系统中食性相同的生物群落，研究摄食功能群有助于科学评估区域生态健康状况。基于2015年9月、2016年5月和2016年9月的天津近岸海域大型底栖动物调查数据，结合同步获取的环境因子，分析研究区大型底栖动物摄食功能群组成及其变化特征，探究大型底栖动物摄食功能群组成及变化的原因。结果表明，3个航次的大型底栖动物被划分为5个摄食功能群，但均未发现植食者。3个航次的摄食功能群组成差别不大，但均以碎屑食者和肉食者的物种数和丰度占比最高，杂食者和浮游生物食者的最低；生物量上则是以浮游生物食者和杂食者的占比最高。各类群的物种数和丰度以海河口东沽航道为界，基本呈现北高南低的分布格局。聚类分析结果表明海河口东沽航道内的摄食功能群结构组成与其他区域明显不同，与环境因子多因素方差分析结果一致，说明摄食功能群结构指标能够敏感地响应环境压力。冗余分析和多因素方差分析表明营养盐是影响研究区大型底栖动物摄食功能群结构组成的主要环境因子。与以往研究相比，天津近岸海域大型底栖动物摄食功能群组成状况未发生明显变化，需进一步加强该区域海洋生态保护修复工作，为京津冀一体化经济发展打下坚实的基础。 |
| 关键词: 大型底栖动物 摄食功能群 环境因子 天津近岸海域 |
| DOI：10.11693/hyhz20200400108 |
| 分类号: |
| 基金项目:国家重点研发计划，2018YFC1407603号；国家自然科学青年基金项目，41406160号。 |
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| MACROZOOBENTHOS FUNCTIONAL FEEDING GROUPS AND ITS RELATIONSHIP WITH ENVIRONMENTAL FACTORS IN THE TIANJIN COASTAL AREA |
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XU Fei1, WANG Jun-Qiang2, CAI Wen-Qian2, WEI Jing-Mei3, HAN Xue-Meng2
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1.College of Environmental Science and Engineering, China West Normal University, Nanchong 637002, China;2.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;3.South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
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| Abstract: |
| The functional feeding group was the biotic community with the same feeding habits. It is useful for assessing the ecological health status scientifically in any natural system while studying on functional feeding groups. Based on macrozoobenthos samples collected from the Tianjin coastal area in September 2015, May 2016, and September 2016, combining with environmental parameters, macrozoobenthos functional feeding groups characteristics and its distribution were analyzed. Results showed that the macrozoobenthos community could be divided into five feeding groups, including carnivorous group (CA), detritivorous group (DE), omnivorous group (OM), and planktivorous group (PL) but without group herbivore (HE). Groups DE and CA displayed the largest proportion of community average richness and abundance in three voyages, but groups PL and OM displayed the smallest proportion. In the contrary, groups PL and OM displayed the largest proportion of community average biomass across three voyages. Using the Donggu channel in the Haihe River estuary as the boundary, the spatial distribution of each group species richness and density showed a higher value in the northern part and a lower one in the southern part. Cluster analyses indicated that the macrozoobenthos feeding groups composition of sampling sites in the Donggu channel was significantly different from other areas, which was in accordance with Multivariate Analysis of Variance (MANOVA) results of environmental parameters. Redundancy analysis (RDA) and MANOVA results showed that nutrients were the main environmental parameters affecting the macrozoobenthos feeding group composition. Compared with the previous study, no obvious change was observed on macrozoobenthos functional feeding group composition in the Tianjin coastal area. Therefore, to lay a solid foundation for the economic development of Beijing-Tianjin-Hebei integration, more efforts were needed to be paid on the marine ecological restoration in the Tianjin coastal area. |
| Key words: macrozoobenthos functional feeding groups environmental factors Tianjin coastal area |
