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| 日本鳗草对潮间带大型底栖动物群落的影响 |
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苏治南1,2, 范航清1,2, 方 超1,2, 钟云旭1,2, 邱广龙1,2
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| (1.广西海洋科学院（广西红树林研究中心），广西红树林保护与利用重点实验室;2.自然资源部北部湾滨海湿地生态系统野外科学观测研究站) |
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| 摘要: |
| 为研究日本鳗草（Zostera japonica）对大型底栖动物群落的影响，本研究对广西珍珠湾的海草床和裸滩开展4个季节的大型底栖动物群落调查。通过Margalef丰富度指数（d）、Pielou均匀度指数（J′）和Shannon-Wiener多样性指数（H′）等指标参数评价大型底栖动物的物种多样性，使用聚类（Cluster）分析和非度量多维尺度排序（NMDS）分析大型底栖动物群落结构。结果表明，海草床全年定量记录的大型底栖动物种类数量（45种）高于裸滩（29种）。海草床的大型底栖动物4季平均丰度（673.69±65.22）ind?m-2、生物量（574.13±44.06）g?m-2、次级生产力（51.37±4.03）g?AFDM?m-2?a-1、Margalef丰富度指数（1.36±0.09）、Pielou均匀度指数（0.57±0.02）和Shannon-Wiener多样性指数（1.28±0.07）均大于裸滩，且生物量、次级生产力、Margalef丰富度指数和Shannon-Wiener多样性指数差异显著。研究结果表明，珍珠湾日本鳗草的生长可促进潮间带大型底栖动物的定居；保护海草资源也有利于保护大型底栖动物，维护潮间带的生物多样性。 |
| 关键词: 海草床 日本鳗草 大型底栖动物 群落特征 珍珠湾 |
| DOI： |
| 投稿时间：2024-06-15修订日期：2024-10-18 |
| 基金项目:*科技基础性工作专项“我国近海重要海草资源及生境调查”（2015FY110600）和广西科学院改革发展专项项目（2024YGFZ504-102） |
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| Effects of Zostera japonica on the intertidal macrobenthic community |
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SU Zhinan1,2, FAN Hangqing1,2, FANG Chao1,2, ZHONG Yunxu1,2, QIU Guanglong1,2
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| (1. Guangxi Key Laboratory of Mangrove Conservation and Utilization, Guangxi Academy of Marine Sciences (Guangxi Mangrove Research Center);2.Observation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Ministry of Natural Resources) |
| Abstract: |
| To explore the role of Zostera japonica in supporting macrobenthic communities, seasonal variations on macrobenthic community structure in seagrass bed and unvegetated habitats of Pearl Bay, Guangxi were investigated. The Shannon-Wiener diversity index(H’), Pielou’s species evenness(J’), Margalef’s richness index(d) were used to evaluate Z. japonica seagrass bed community characteristics. In addition, the community structures of macrobenthos were analyzed by hierarchical cluster and non-metric sort multidimensional scaling (nMDS). The macrobenthos species number of in the seagrass bed (45 species) was greater than the adjacent unvegetated habitats (29 species). The annual mean abundance (673.69±65.22 ind?m-2), biomass (574.13±44.06 g?m-2), secondary productivity (51.37±4.03 g AFDM?m-2?a-1), Margalef’s richness index (1.36±0.09), Pielou’s evenness index (0.57±0.02) and Shannon-Weiner index (1.28±0.07) of macrobenthos in the seagrass bed was greater than the adjacent unvegetated habitats. There were significant differences in biomass, secondary productivity, Margalef’s richness index and Shannon-Weiner index between the two habitats. Our results demonstrate that Z. japonica in Pearl Bay contribute the settlement of the intertidal macrobenthos, and protecting seagrass is beneficial to conserving the associated macrobenthos and maintaining the biodiversity in seagrass ecosystem. |
| Key words: seagrass bed, Zostera japonica, macrobenthos community structure Pearl Bay |
