摘要
【目的】探明海洋工程材料在热带海洋环境试验站硅藻污损群落的组成变化,为研究该海域材料腐蚀、生物污损以及生物多样性提供参考。【方法】取4种材料进行全浸腐蚀试验,定期取出试片冷藏客运到青岛,用次氯酸钠法制成永久封片,在带有微分干涉显微镜下记数,并使用PRIMER 6对硅藻Shannon多样性指数、Pielou’s均匀度指数和Simpson优势度进行计算。【结果】检出污损硅藻16目24科30属61种,其中双眉藻属、菱形藻属和舟形藻属为优势类群;物种多样性指数随时间而增加;热浸锌表面硅藻群落结构变化与其他3种材料有所不同。【结论】在南海热带近岸,材料表面性质对其表面附着的污损硅藻群落有一定影响,其中锌离子的影响较为明显。
Objectivel The purpose of this research is to investigate the variation of fouling dia-tom community on materials of ocean engineering in tropical marine environment ？ aiming to provide reference formaterial corrosion, biofouling andbiodiversity in this sea area.【 Meth- ods】 Four types of material slides were subjected to a total immersion test. Material slides were refrigerated and transported to Qingdao on a regular basis. The samples were made into permanent seal with sodium hypochlorite.Diatoms were counted by light microscopes（（ LM ） equipped with ditterential interferencecontrastOUQ. The Shannon biodiversity index ,Pielou暞 eveness index and Simpson ？s index of dominancy were calculated in PRIMER 6. 【 Results】61 fouling diatomspecies belonging to 16 orders 30 genera and 24 families had been identified？among which Amphora ^Nitzschia and NavicuLa were dominant. The Shannon di-versity index of diatom increased on the surface of all materials during the experimental peri-od. The structure change of fouling diatom community on the hot_dip zinc surface was differ- entwth the other three materials.【 Conclusion】 In tropical coastal water area of SouthChina Sea ？ the surface properties of materials have influenced the adherent fouling diatom commu-nity. What＇s more,the influence of the Zinc ion is obvious.
出处
《广西科学院学报》
2017年第3期178-184,共7页
Journal of Guangxi Academy of Sciences
基金
国家自然科学基金项目(59471054,59071040)资助
关键词
南海
硅藻
污损
South China Sea, diatom, fouling
