The ecological impacts of urbanization and eutrophication on zooplankton communities in urban waterbodies have recently gained wide interest. Study findings vary across species and urban waterbodies. How the development of such changes affects the variation of biotic assemblages has only been explored to a limited extent in tropical urban lakes. Spatial and temporal variations of zooplankton community structure in 11 urban waterbodies in the Klang Valley, Malaysia were investigated along trophic and urbanization gradients. Zooplankton and water quality samples were collected three times, between May and November 2017, from two different locations in each lake. All three main zooplankton groups (rotifera, copepoda, and cladocera) were recorded from the study areas throughout the sampling period. The zooplankton community structure, particularly with regard to rotifers and cladocerans, varied between lakes and seasons. Zooplankton diversity does not vary with lake size or distance from the city center but does vary with shoreline development index and urbanization impacts. The zooplankton populations were dominated by rotifers, mainly Brachionus angularis at all study sites during the study period followed by copepods and cladocerans. The total density of zooplankton was significantly highest (p < 0.05) in the hypereutrophic lakes and during the dry season. Zooplankton diversity and rotifer species richness were negatively correlated with total phosphorus (TP). Diversity increased with urbanization and shoreline development, with rotifers as a potential bioindicator of trophic state in urban tropical lakes, due to their close relationship with TP.

中文翻译：

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热带城市水体浮游动物群落结构的时空变化沿营养和城市梯度变化

城市化和富营养化对城市水体中浮游动物群落的生态影响最近引起了广泛关注。研究结果因物种和城市水体而异。此类变化的发展如何影响生物集合体的变化，仅在热带城市湖泊中进行了有限的探索。沿营养和城市化梯度调查了马来西亚巴生谷11个城市水体中浮游动物群落结构的时空变化。2017年5月至2017年11月之间，从每个湖泊的两个不同地点采集了3次浮游动物和水质样本。在整个采样期间，从研究区域记录了所有三个主要的浮游动物组（轮虫，角足纲和梭菌）。浮游动物群落结构，尤其是轮虫和锁骨，在湖泊和季节之间有所不同。浮游动物的多样性不随湖泊大小或距市中心的距离而变化，但随海岸线发展指数和城市化影响而变化。在研究期间，所有研究地点的轮虫主要由轮虫组成，主要是轮枝杆菌，其次是co足类和锁骨类。在富营养化湖泊和干旱季节，浮游动物的总密度显着最高（p <0.05）。浮游动物的多样性和轮虫的物种丰富度与总磷（TP）呈负相关。随着城市化和海岸线的发展，多样性增加，轮虫由于其与TP的密切关系而成为城市热带湖泊中营养状态的潜在生物指标。