对水生群落功能性状的研究有助于了解生态系统动态以及生态位的多样性。这里,我们描述了浮游动物的功能群,以及哪些湖泊因素是性状变化的原因。收集水样以评估湖泊学参数,并使用浮游生物网(68μm)进行垂直运输以表征七个水库的群落(Itupararanga,Atibainha,SaltoGrande,格兰德河,Igaratá,巴拉·博尼塔,还有Broa,圣保罗州,巴西)。确定的每个物种都根据营养类群进行分类,再现模式,身体长度,栖息地,和喂养栖息地。我们的结果表明,具有纤毛的中上层悬浮食草动物占主导地位(31%),其次是中上层食草动物悬浮滤食动物(17%)和猛禽杂食动物(15.38%)。其他人被归类为带有口腔装置的中上层草食动物悬浮液(12.3%),带纤毛的沿海食草动物(12.3%),中上层吸食草食动物(9.2%),和沿海放牧草食动物(3%)。食草动物的优势可能受到营养物质供应的影响,影响他们的食物来源。大量从事掠夺性行为的杂食动物可以归因于不稳定的猎物,从而对生物群落的组织产生重大影响。
Studies on functional traits of aquatic communities are useful for understanding the ecosystem dynamics as well as the diversity of ecological niches. Here, we characterize zooplankton functional groups and which limnological factors are responsible to changes in traits. Water samples were collected to evaluate limnological parameters and vertical hauls with plankton net (68 μm) were performed to characterize the community in seven reservoirs (Itupararanga, Atibainha, Salto Grande, Rio Grande, Igaratá, Barra Bonita, and Broa, São Paulo state, Brazil). Each species identified was classified according to a trophic group, reproduction mode, body length, habitat, and feeding habitats. Our results showed a predominance of pelagic suspensory herbivores with cilia (31%) followed by pelagic herbivore suspension filter feeders (17%) and raptorial omnivores (15.38%). The other individuals were categorized as pelagic herbivore suspension with oral device (12.3%), littoral herbivores suspensive with cilia (12.3%), pelagic-sucking herbivores (9.2%), and littoral grazing herbivores (3%). The dominance of herbivores may be influenced by the availability of nutrients, influencing their food sources. The abundance of omnivores engaged in predatory behavior can be attributed to disponible prey, thereby exerting significant repercussions on the organization of biological communities.