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Phytoplankton species composition and biomass in the Ladoga Lake tributaries and the Neva river

机译:拉多加湖支流和涅瓦河的浮游植物种类组成和生物量

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Comparison of phytoplankton in the Neva river and the main tributaries of Ladoga Lake is made on the base of samples taken in July and September of 1995--1998. 435 species are identified in the species composition. Diatoms, green and bluegreen algaewere the most diverse. Phytoplankton biomass changed from 0.2 mg/l to 6 mg/l. Centric diatoms comprised 54--96 percent of the total phytoplankton biomass in the majority of the rivers, and were especially abundant in the largest rivers. Bluegreens were most abundant in phytoplankton of the Neva and the Volkhov rivers, and cryptomonads in the rivers Syas, Tuloksa, Pasha, Vidlitsa. Claster analysis of the data has shown a large similarity at the Neva phytoplankton with that of the rivers Burnaya and Volkh
机译:内娃河和拉多加湖主要支流的浮游植物的比较是基于1995--1998年7月和9月的采样进行的。在物种组成中鉴定出435种。硅藻,绿色和蓝绿色藻类最多样化。浮游植物的生物量从0.2 mg / l变为6 mg / l。在大多数河流中,中心硅藻占浮游植物总生物量的54--96%,在最大的河流中尤为丰富。内娃河和沃尔霍夫河的浮游植物中的蓝绿藻含量最高,而Syas,Tuloksa,Pasha,Vidlitsa等河中的隐孢子虫含量最高。数据的数据分析表明,内娃浮游植物与伯纳亚河和沃尔克河的相似性很高

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