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首页> 外文期刊>Journal of Oceanography and Marine Science >Spatial distribution and diversity of phytoplankton community in Eastern Obolo River Estuary, Niger Delta
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Spatial distribution and diversity of phytoplankton community in Eastern Obolo River Estuary, Niger Delta

机译：尼日尔三角洲东部奥波洛河河口浮游植物群落的空间分布和多样性

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摘要

This paper reported a two season study of diversity, spatial distribution, species composition of phytoplankton and physico-chemical characteristics of the Eastern Obolo River Estuary between June and November 2015 and December and May, 2016. Water conductivity (≥675) showed direct relationship with phytoplankton abundance, turbidity showed strong correlation with species density as well. Species were more evenly distributed across 3 stations at dry season and poorly distributed across 3 stations at wet season. Shannon-wiener index (H) showed differences within the stations and seasons. Simpson’s diversity index (D) recorded the lowest in station 2 for both seasons. A wide range of phytoplankton species distributed in 5109 individual species, 85 taxa, 16 orders, 8 classes and in 5 divisions during wet season while in dry season 6906 individual species, 84 taxa, 18 orders, 6 classes and 4 divisions were found. The abundance of phytoplankton in dry season occurred in the sequence Baccillariophyta (79%) Cyanophyta (12%) Chlorophyta (7%) Dinophyta (2%) while in wet season the sequence was thus; Bacillariophyta (60%) Chlorophyta (22%) Cyanophyta (15%) Dinophyta (3%) Euglenophyta (0%) respectively. Bacillariophyta were the most dominant both in abundance and species composition in both seasons.
机译：本文报道了2015年6月至11月以及2016年12月至5月之间东奥博洛河河口的多样性，空间分布，浮游植物的种类组成和理化特征的两个季节研究。水电导率（≥675）与浮游植物的丰度，浊度也与物种密度密切相关。在干旱季节，物种在三个站点的分布更均匀，而在雨季，物种在三个站点的分布较差。 Shannon-wiener指数（H）在站点和季节内显示差异。辛普森（Simpson）的多样性指数（D）在两个季节中均居第二站最低。在湿季，浮游植物种类繁多，分布在5109个个体，85个分类单元，16个阶，8类和5个分区中，而在旱季则发现了6906个单个物种的84个分类单元，18个阶，6类和4个分区。枯水期的浮游植物数量丰富，依次为百生百菌科（79％）>蓝藻（12％）>绿藻（7％）藻类（2％），而在雨季则为该序列。细菌杆菌（60％）>绿藻（22％）>蓝藻（15％）>恐龙（3％）>裸藻（0％）。细菌藻在两个季节的丰度和物种组成方面均是最主要的。

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