| 摘要: |
| 于2014年8月, 在浙江宁波渔山列岛布设4个岩礁断面开展潮间带大型底栖生物调查, 分析其种类组成、丰度、生物量、优势种、生物多样性和群落结构特征等。该调查共采集到潮间带大型底栖生物98种, 包括大型底栖动物70种和大型底栖藻类28种; 其中优势种有9种, 分别为小结节滨螺[Echinolittorina radiata (Souleyet)]、条纹隔贻贝[Septifer virgatus (Wiegmann)]、厚壳贻贝[Mytilus coruscus (Gould)]、带偏顶蛤[Modiolus comptus (Sowerby)]、栗色拉沙蛤[Lasaea nipponica (Keen)]、日本笠藤壶[Tetraclita japonica (Pilsbry)], 刺巨藤壶[Megagbalanus volcano (Pilsbry)], 以及珊瑚藻[Corallina officinalis (Linnaeus)]和小石花菜[Gelidium divaricatum (Marteus)]。潮间带大型底栖生物平均生物量为8 515.50 g/m2, 平均丰度为6 841.63 个/m2; 各断面Shannon-wiener指数(H′)、Pielou均匀度指数(J)和Margalef丰富度指数(d)平均值分别为1.89±0.14、0.38±0.01和3.66±0.52。ABC曲线分析表明, 4个断面受到一定扰动。与历史资料相比, 该区域物种数减少明显, 生物量和丰度有所增加, 优势种被个体较小的日本笠藤壶、条纹隔贻贝等物种所演替。上述结果可为渔山列岛潮间带开发保护管理及其生物资源的可持续利用提供重要参考。 |
| 关键词: 渔山列岛 岩相潮间带 大型底栖生物 群落结构 生物多样性 |
| DOI：10.11759/hykx20160121002 |
| 分类号: |
| 基金项目:2013 年度海岛保护专项资金(财建[2013]695 号) |
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| Study on the macrobenthic community structure in the intertidal zone of the Yushan Islands in summer |
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JIN Wen-yu,PENG Xin,WANG Ning,LIU Jun-feng
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| Abstract: |
| Based on the samples of macrobenthos collected from four sections of the rocky intertidal zone of the Yushan Islands, the composition, distribution, diversity, and community structure of the species were studied in August 2014. A total of 98 species (70 macrozoobenthos and 28 macroalgae) were identified from the total sample size studied, of which the following 9 species were dominant: Echinolittorina radiata (Souleyet), Septifer virgatus (Wiegmann), Mytilus coruscus (Gould), Modiolus comptus (Sowerby), Lasaea nipponica (Keen), Tetraclita japonica (Pilsbry), Megagbalanus volcano (Pilsbry), Corallina officinalis (Linnaeus), and Gelidium divaricatum (Marteus). The average biomass and abundance in all the sections were found to be 8515.50 g·m-2 and 6841.63 ind·m-2, respectively. Other calculated parameters were as follows: Shannon-Wiener index (H′) = 1.89 ± 0.14, Margalef index (d) = 3.66 ± 0.52, and Pielou index (J) = 0.38 ± 0.01. The Abundance Biomass Curve showed that the community structure of macrobenthos was evenly disturbed in the four sections. Compared with the findings of past studies, the number of species reduced significantly while the biomass and abundance increased, and dominant species were gradually succeeded by other small-size species such as T. japonica and S. virgatus. This investigation provides important references for the management and sustainable use of intertidal biological resources in the Yushan Islands. |
| Key words: Yushan Islands rocky intertidal zone macrobenthos community structure biodiversity |
