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首页> 外文期刊>International Journal of Marine Science >Diversity and Seasonal Changes of Zooplankton Communities in the Shatt Al-Arab River, Basrah, Iraq, with a Special Reference to Cladocera
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Diversity and Seasonal Changes of Zooplankton Communities in the Shatt Al-Arab River, Basrah, Iraq, with a Special Reference to Cladocera

机译：伊拉克巴士拉的沙特阿拉伯河中浮游动物群落的多样性和季节性变化，特别提及克拉多菌

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Zooplankton abundance and distribution were studied at four stations in the northern sector of Shatt Al-Arab from September 2008 to August 2009. Monthly zooplankton samples were collected. Oblique hauls were taken at each station using a 0.120 mm mesh-sized net with 40 cm mouth opening. Air and water temperatures, salinity, pH, dissolved oxygen, turbidity, chlorophyll-a, total suspended solids and total soluble solids were measured at each station and at each sampling event and were correlated with the density of Cladocera. Like Shannon index, Jaccard?s similarity index, measures of richness and evenness were calculated. Water temperature ranged from 10 to 28 oC. Salinity values changed from 0.7 to 4.1 psu with a decline in the summer and an increase in the autumn. pH values were >7, dissolved oxygen varied from 4.9 in the summer to 12.3 mg/l in the winter. Chlorophyll-a values fluctuated between 2.3 in the autumn and winter and 21.4 mg/m3 in Summer. Zooplankton density was the least at station 1 (79-10074 ind/m3) and the most at station 2 (174-65170 ind/m3).Cirripede larvae dominated the zooplankton community at all the stations. Cladocera was second in number, followed by Copepoda. The maximum diversity index (2.11), richness (64.45) and evenness (0.47) were obtained at station 1. The highest similarity was obtained between stations 3 and 4 and the lowest between stations 1 and 2 .
机译：在2008年9月至2009年8月期间，在Shatt Al-Arab北部地区的四个站点对浮游动物的丰度和分布进行了研究。每月采集浮游动物样本。在每个站点使用0.120毫米网眼大小，开口为40厘米的网进行倾斜牵引。在每个站点和每个采样事件中测量空气和水的温度，盐度，pH，溶解氧，浊度，叶绿素-a，总悬浮固体和总可溶性固体，并将其与克拉多拉的密度相关联。像Shannon指数，Jaccard ？相似度指数一样，计算了丰富度和均匀度的度量。水温范围为10至28 o C。盐度值从0.7 psu变为4.1 psu，夏季下降，秋季上升。 pH值> 7，溶解氧从夏季的4.9到冬季的12.3 mg / l不等。叶绿素a值在秋季和冬季的2.3之间波动，在夏季的21.4 mg / m 3 之间波动。浮游动物密度在第1站最小（79-10074 ind / m 3 ），在第2站最大（174-65170 ind / m 3 ）。所有站点的浮游动物群落。 Cladocera位居第二，其次是Co足类。在站点1获得了最大的多样性指数（2.11），丰富度（64.45）和均匀性（0.47）。在站点3和4之间获得了最高的相似度，而在站点1和2之间获得了最低的相似度。

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