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首页> 外文期刊>The Kasetsart Journal >Seasonal Relationships between the Plankton Community and Hydrographic Conditions in a Shallow Oligotrophic Bay, Gulf of Thailand
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Seasonal Relationships between the Plankton Community and Hydrographic Conditions in a Shallow Oligotrophic Bay, Gulf of Thailand

机译：泰国湾浅层寡营养湾浮游生物群落与水文条件之间的季节性关系

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摘要

The variability in a plankton community was studied twice a week from September 2006 to August 2007 in a shallow bay (Manao Bay, Gulf of Thailand). Phytoplankton was collected by filtering with a 20 μm plankton net and zooplankton was collected by vertical hauling with a plankton net of 200 μm mesh size. Hydrographic conditions were measured in situ, while water samples were analyzed for nutrient content in the laboratory. Fifty-six genera of phytoplankton and 37 groups of zooplankton were recorded. The mean abundance of phytoplankton was 4,930 ± 2,801 unit 1~(-1) while that of zooplankton was 3,380 ± 1,264 individuals m~(-3) (ind. m~(-3)). The dominant groups of phytoplankton were centric diatoms and pennate diatoms, while copepods and meroplankton were the major contributors of zooplankton. The plankton community did not differ in species composition and abundance between the two monsoon seasons and there were no specific noticeable characteristics. Hydrographic conditions showed slight fluctuations and nutrients had low values. Additionally, low average primary production (1.30 ± 0.67 mg m~(-3)) was influenced by water temperature, rainfall, salinity, silicate content and dissolved inorganic nitrogen. This bay was characterized as a tropical oligotrophic coastal water.
机译：2006年9月至2007年8月，在浅湾（泰国湾Manao湾）每周两次研究浮游生物群落的变异性。通过用20μm浮游生物网过滤收集浮游植物，并通过使用200μm网眼大小的浮游生物网进行垂直拖运来收集浮游动物。在原地测量水文条件，同时在实验室分析水样中的营养成分。记录了浮游植物56属和浮游动物37组。浮游植物的平均丰度为4,930±2,801单位1〜（-1），而浮游动物的平均丰度为3,380±1,264个个体m〜（-3）（ind。m〜（-3））。浮游植物的主要群体是中枢硅藻和戊二烯硅藻，而pe足类和浮游动物是浮游动物的主要贡献者。在两个季风季节之间，浮游生物群落的物种组成和丰度没有差异，也没有特定的明显特征。水文条件显示出轻微的波动，养分值较低。此外，水温，降雨，盐度，硅酸盐含量和溶解的无机氮还影响平均初级生产量较低（1.30±0.67 mg m〜（-3））。该海湾的特征是热带贫营养的沿海水域。

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