Macrophytes sometimes become a nuisance, interfering with navigation, fishing, and aesthetic purposes. Therefore, in many water bodies, the macrophytes are periodically removed. However, with the removal of macrophytes, changes occur in the physico-chemical properties of water and the plankton associated with them. Here we describe the zooplankton community composition using functional traits (feeding guilds and habitat type) from littoral and open water zones in the central Mexican waterbody Benito Juárez Reservoir for one year. In two sites, the macrophyte Egeria densa was removed by the local administration, which resulted in an increase of turbidity, chlorophyll a and phycocyanin levels. Among rotifers, Polyarthra, Trichocerca, Lecane, Lepadella, and Keratella were the dominant genera while for microcrustaceans, copepods, Alona, Ceriodaphnia, Chydorus, and Simocephalus were the dominant genera. Littoral sites had a higher number of microphagous and raptorial species than open water; however, after macrophyte removal, microphagous species were more reduced than raptorial species. Moreover, a decrease in semi-planktonic and benthic-periphytic species, as well as an increase in planktonic organisms was observed after macrophyte removal. Nonmetric multidimensional scaling showed that before the removal of Egeria, macrophyte sites were different from open water; however, after the removal, the zooplankton community was similar in all sites. Canonical correspondence analysis (CCA) showed that carbonates, nitrates, oxygen, and turbidity were the strongest predictors determining zooplankton composition. Our study showed that macrophyte removal caused habitat modification and zooplankton community shifts that reduce diversity and functional groups.

大型植物有时会变得令人讨厌，干扰航行，钓鱼和审美目的。因此，在许多水体中，大型植物被定期去除。然而，随着大型植物的去除，水和与之相关的浮游生物的物理化学性质发生了变化。在这里，我们利用墨西哥中部水域贝尼托·华雷斯水库的沿海和开放水域的功能性状（进食行会和栖息地类型）描述了浮游动物群落组成，为期一年。在两个地方，当地植物去除了大型植物埃塞俄比亚densa，这导致浊度，叶绿素a和藻蓝蛋白水平增加。在轮虫中，Polyarthra，Trichocerca，Lecane，Lepadella和龟甲为优势属而microcrustaceans，桡足类，阿罗娜，网纹，Chydorus，和老年低额分别为优势属。沿海地区的微噬和猛禽种类比开放水域多。然而，去除大型植物后，微食性物种比猛禽物种减少得更多。此外，在去除大型植物后，观察到半浮游生物和底栖生物的减少，浮游生物的增加。非度量多维标度显示，去除埃塞俄比亚之前，大型植物的位置不同于开放水域；但是，在移除之后，所有地点的浮游动物群落都相似。典型的对应分析（CCA）表明，碳酸盐，硝酸盐，氧气和浊度是确定浮游动物组成的最强预测因子。我们的研究表明，去除大型植物导致栖息地的改变和浮游动物群落的转移，从而减少了多样性和功能群。