| 天津于桥水库浮游动物群落变化及其与束丝藻消长的关系 |
| Zooplankton Community Dynamics and Its Relationship with the Growth of Aphanizomenon sp. in Yuqiao Reservoir, Tianjin |
| 投稿时间：2022-06-27 修订日期：2022-09-08 |
| DOI：10.15928/j.1674-3075.202206270242 |
| 中文关键词:浮游动物 群落结构 动态变化 束丝藻 于桥水库 |
| 英文关键词:Yuqiao Reservoir Zooplankton Community structure Dynamic Aphanizomenon spp. |
| 基金项目:生物多样性调查评估项目（2019HJ2096001006)。 |
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| 中文摘要: |
| 为研究天津于桥水库富营养化背景下浮游动物动态变化及与水华藻类束丝藻的消长关系，2018年3月至2019年11月对于桥水库浮游动物、束丝藻和环境因子进行持续监测。监测期间共鉴定后生浮游动物72种（属），其中轮虫（Rotifera）51种（属），占总物种数70.83%；枝角类（Cladocera）10种，桡足类（Copepoda）11种，分别占总物种数13.89%和15.28%。螺形龟甲轮虫（Keratella cochlearis）、裂痕龟纹轮虫（Anuraeopsis fissa）、广布多肢轮虫（Polyarthra vulgaris）、疣毛轮虫（Synchaeta sp.）、长额象鼻溞（Bosmina longirostris）、短尾秀体溞（Diaphanosoma brachyurum）、广布中剑水蚤（Mesocyclops leuckarti）和台湾温剑水蚤（Thermocyclops taihokuensis）是于桥水库浮游动物优势种。浮游动物密度和生物量5―9月较高，11月至次年3月份较低。冗余分析（RDA）显示水温（WT）、总氮（TN）、亚硝氮（NO2--N）、总磷（TP）是影响浮游动物群落结构的显著因子（P<0.01）。2018年束丝藻平均密度3.07×107 cells/L， 2019年束丝藻平均密度上升至12.1×107 个/L，束丝藻丰度在5月份左右开始上升，9月份后开始下降，变化趋势与浮游动物相似。斯皮尔曼秩相关性检验显示浮游动物尤其是浮游甲壳类密度和生物量与束丝藻显著正相关（P<0.01），结合变化趋势表明浮游动物密度和生物量直接或间接受到束丝藻的影响。 |
| 英文摘要: |
| In this study, we explored the changes in zooplankton community structure and influencing environmental factors in Yuqiao Reservoir in the context of reservoir eutrophication and frequent algae blooms. We also analyzed the relationship of the zooplankton community with the growth and decline of Aphanizomenon sp., aiming to provide a scientific reference for water environment assessment and algal bloom control in reservoirs. From March 2018 to November 2019 (except for December 2018, January and February 2019 during low water), monthly monitoring of zooplankton, Aphanizomenon sp. and water quality was conducted at seven sampling stations in Yuqiao Reservoir. A total of 72 zooplankton species were identified, including 51 rotifers (70.83%), 10 cladocerans (13.89%) and 11 copepods (15.28%). Keratella cochlearis, Anuraeopsis fissa, Polyarthra vulgaris, Synchaeta sp., Bosmina longirostris, Diaphanosoma brachyurum, Mesocyclops leuckarti, and Thermocyclops taihokuensis were the dominant species. Zooplankton density and biomass presented obviously periodic fluctuation with the ranges of 37-9 216 cells/L and 0.0398-14.3760 mg/L, increasing from May to September and decreasing from November to March, as did species richness and the Shannon-Wiener diversity index. Redundancy analysis showed that the zooplankton community was significantly affected by water temperature (WT), nitrite nitrogen (NO2--N), total nitrogen (TN) and total phosphorus (P<0.01). The average density of Aphanizomenon sp. increased from 3.07×107 cells/L in 2018 to 12.1×107 cells/L in 2019, and increased from May and decreased after September. There was a significant positive correlation of Aphanizomenon sp. density with WT, PO43--P and NH4+-N (P<0.01), and a significant negative correlation with transparency (P<0.01) and dissolved oxygen (P<0.05). During the investigation, Aphanizomenon sp. accounted for 22.25% of total algae density, and up to 96.10% at some sampling stations. The variation of Aphanizomenon sp. density was very similar to that of zooplankton and the two were highly correlated (P<0.01) based on Spearman's rank correlation analysis. Zooplankton density and biomass, especially crustaceans, were directly or indirectly affected by Aphanizomenon sp. according to correlation and trend analysis（P<0.01). |
| 魏朝军,邱鹏飞,王府臣,乔之怡,展雪玲,冯伟松,李仁辉,龚迎春.2024.天津于桥水库浮游动物群落变化及其与束丝藻消长的关系[J].水生态学杂志,45(6):134-144. |
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