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Phytoplankton Community Structures and Environmental Limitation in Fuxian Lake

机译：抚仙湖浮游植物群落结构及环境限制

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摘要

The species composition and cell density of phytoplankton and chlorophyll a content were studied with reference to environmental factors sampled in spring, summer and autumn in 2001 in Fuxian Lake (24°21' - 24° 38'N, 102°49'12 " - 102°57'26"E). The phytoplankton from Fuxian Lake included 78 species belonging to 40 genera 25 family, 7 phyla. Chlorophytes was predominant, with consisted of 43.5% of total species number. Species number of phytoplankton and cell density, and chlorophyll a appeared visible monthly variation. Phytoplankton cell density was highest at water layer of 0-20m. The average cell density of phytoplankton was on 18th September (342.73×103cells/dm3) > on 13th September (235.67×103 cells/dm3) > on 14th August (80.10×103 cells/dm3)> on 26th May (52.46×103 cells/dm3). The main predominant phytoplankton species was Mougeotia bloodlei，which accounted for 42.94%-84.94% of total cell density of phytoplankton. Therefore the monthly variation of the cell density of Mougeotia bloodlei controlled the overall density of phytoplankton directly. The change of dominant species from 1990 to present study was Mougeotia bloodlei (Chlorophyta) from Aphanizomenon flos-aquae (Cyanophyta). The community structures of phytoplankton were consists of Mougeotia bloodlei, Chroococcus spp., Cyclotella spp., Ceratium hirundinella and Dinobryon sertularia. The cell density of phytoplankton was positively correlated with chlorophyll a concentration, and negatively correlated with the concentration of nutrient salts (PO43-, NO3- and SiO32-).
机译：参照2001年春季，夏季和秋季2001年抚仙湖（24°21'-24°38'N，102°49'12”的环境因子对浮游植物和叶绿素a含量的物种组成和细胞密度进行了研究。 102°57'26“ E）。抚仙湖浮游植物包括78个属，属于40属25科7属。绿藻类占主导地位，占总种数的43.5％。浮游植物的种类数和细胞密度，以及叶绿素a出现了可见的每月变化。浮游植物的细胞密度在0-20m的水层最高。浮游植物的平均细胞密度是9月18日（342.73×103细胞/ dm3）> 9月13日（235.67×103细胞/ dm3）> 8月14日（80.10×103细胞/ dm3）> 5月26日（52.46×103细胞） / dm3）。浮游植物的主要种类是血红毛藻（Mougeotia bloodlei），占浮游植物总细胞密度的42.94％-84.94％。因此，毛举藻细胞密度的每月变化直接控制了浮游植物的总体密度。从1990年到目前的研究中，优势种的变化是来自Aphanizomenon flos-aquae（Cyanophyta）的Mougeotia bloodlei（Chlorophyta）。浮游植物的群落结构由血红毛藻（Mougeotia bloodlei），嗜铬球菌（Chroococcus spp。），小环藻（Cyclotella spp。），平菇（Ceratium hirundinella）和小藜（Dinobryon sertularia）组成。浮游植物的细胞密度与叶绿素a浓度呈正相关，与营养盐（PO43-，NO3-和SiO32-）的浓度呈负相关。

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  • 会议地点 Beijing(CN)
  • 作者

    CHEN Shou-man; rnSUN Yan-ling;

  • 作者单位

    ZHU Genhai@Key Laboratory of Marine Ecosystem and Biogeochemistry, SOA;

    Second Institute of Oceanography, SOA,Hangzhou 310012, Zhejiang, China--WANG Chunsheng@Key Laboratory of Marine Ecosystem and Biogeochemistry, SOA;

    Second Institute of Oceanography, SOA,Hangzhou 310012, Zhejiang, China--Shuji OHTANI@Department of Biology, Faculty of Education, Shimane University, Nishi Kawatsu, Matsue, Shimane 690, Japan--LIU Zhensheng@Key Laboratory of Marine Ecosystem and Biogeochemistry, SOA;

    Second Institute of Oceanography, SOA,Hangzhou 310012, Zhejiang, China--NI Jianyu@Key Laboratory of Marine Ecosystem and Biogeochemistry, SOA;

    Second Institute of Oceanography, SOA,Hangzhou 310012, Zhejiang, China--ZHOU Huaiyang@Guangzhou Institute of Geochemistry, CAS, Guangzhou 510640, Guangdong, China--;

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  • 中图分类 环境科学基础理论;
  • 关键词

    phytoplankton; environmental limitation; community structures; Fuxian Lake;

    机译：浮游植物环境限制群落结构抚仙湖;

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