Few studies have examined zooplankton assemblages associated with grey willow (Salix cinerea) invasions in wetlands. Our aim was to quantitatively examine zooplankton composition among S. cinerea stands within the South Taupō Wetland, New Zealand, to determine whether these assemblages are affected by willow growth and willow control treatment using the herbicide metsulfuron (C₁₄H₁₅N₅O₆S). Alternatively, we examined whether wetland hydrology had an over-riding influence. Sampling was performed on three occasions (late-summer, mid-winter, and early-summer). Using Multidimensional Scaling and ANOSIM, we found no significant differences in zooplankton composition or environmental variables among native vegetation, live and dead S. cinerea sites, except for a difference in willow canopy density between late summer and winter. However, zooplankton composition differed on either side of a sand bar, suggesting areas separated by this barrier functioned independently. Overall, we found zooplankton communities to be regulated more by wetland hydrology than by willow presence. A limited willow effect was possibly due to the wetland being at an early stage of invasion, representing stand-alone individuals, with a continuous canopy not yet having formed. Alternatively, willows have lesser effects on invertebrates in wetlands than in streams. Ground control treatment of S. cinerea using metsulfuron had no apparent impact.

很少有研究检查与灰柳（灰柳（Salix cinerea））入侵湿地有关的浮游动物组合。我们的目的是定量研究新西兰南陶波湿地内灰葡萄孢中浮游动物的组成，以确定这些组合是否受到柳树生长和使用除草剂甲磺隆（C ₁₄ H ₁₅ N ₅ O ₆S）。另外，我们检查了湿地水文学是否具有压倒一切的影响。进行了三种采样（夏末，冬中和夏初）。使用多维尺度和ANOSIM，我们发现在浮游动物成分或原生植被，存活和死亡之间没有显著差异的环境变量S.灰霉病地点，除了夏末和冬季之间的柳树冠层密度不同。但是，沙洲两侧的浮游动物组成各不相同，这表明被该屏障隔开的区域是独立起作用的。总体而言，我们发现浮游动物群落受湿地水文学的影响比受柳树的影响更大。有限的柳树效应可能是由于湿地处于入侵的早期，代表独立的个体，尚未形成连续的树冠。另外，柳树对湿地无脊椎动物的影响小于溪流。使用甲磺隆对灰葡萄孢的地面控制处理没有明显影响。