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引用本文:裴国凤,刘梅芳.武汉东湖底栖藻类在不同基质上生长的比较.湖泊科学,2009,21(3):357-362. DOI:10.18307/2009.0307
PEI Guofeng,LIU Meifang.Comparison of benthic algal composition developed on different substrata in Lake Donghu, Wuhan. J. Lake Sci.2009,21(3):357-362. DOI:10.18307/2009.0307
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武汉东湖底栖藻类在不同基质上生长的比较
裴国凤, 刘梅芳
中南民族大学生命科学学院, 武汉 430074
摘要:
测定了富营养化武汉东湖中的底栖藻类在不同人工基质上建群发展为成熟群落的生物量(Chl.a),定性分析了人工和天然基质上成熟硅藻群落的种类组成和结构特征.通过比较建群期间底栖藻类在花岗岩、玻璃、塑料(PVC)和木板4种不同人工基质上的生物量变化,发现底栖藻类在PVC上的生物量峰值(Chl.a,71.0μg/cm2)明显高于其它人工基质,说明PVC是最适合底栖藻类生长的人工基质.分析发现人工基质花岗岩上底栖硅藻群落的种类组成、主要优势种类、群落的相似性指数、多样性指数都和天然基质上的硅藻群落是高度相似的,显示该人工基质能够代表天然基质上的藻类群落,表明花岗岩应该是以底栖藻类作指示生物监测和评价水质的理想人工基质.
关键词:  底栖藻类  人工基质  生物量  硅藻群落  武汉东湖
DOI:10.18307/2009.0307
分类号:
基金项目:国家自然科学基金(30570046)资助
Comparison of benthic algal composition developed on different substrata in Lake Donghu, Wuhan
PEI Guofeng, LIU Meifang
College of Life Sciences, South-Central University for Nationalities, Wuhan 430074, P. R. China
Abstract:
Biomass (Chl.a) of benthic algae colonized and developed mature community on different artificial substrata was determined in eutrophic lake Donghu, and species composed and structure characteristic of mature diatom communities on artificial and natural substratum were analysed qualitatively. Biomass variance of benthic algae was compared on four different artificial substratum, granite stone, glass, plastic (PVC) and pine wood during the colonization period, and the peak biomass of benthic algae (Chl.a, 71.0μg/cm2) on PVC was significantly higher than that of the other artificial substrata, which showed PVC was the most suitable artificial substratum for benthic algae. Species composition, dominant species, similarity index and diversity index of benthic diatom communities showed a relatively high degree of consistency between natural and granite artificial samplers, which suggested granite should be the most favourable artificial substratum with benthic algae used as indicatory biology that monitored and evaluated water quality.
Key words:  Benthic algae  artificial substrata  biomass  diatom community  Lake Donghu(Wuhan)
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