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湖泊科学  2009 

武汉东湖底栖藻类在不同基质上生长的比较

DOI: 10.18307/2009.0307

Keywords: 底栖藻类,人工基质,生物量,硅藻群落,武汉东湖

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Abstract:

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.

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