Species diversity varies in space and time. Temporal changes in the structure and dynamics of communities can occur at different scales. We investigated the temporal changes of dung beetle assemblages in the Amazonian region along seasons, years, and successional stages. We evaluated if assemblage structure changes between temporal scales and whether such changes affect the functional structure of communities. To achieve these goals, we sampled dung beetles using linear transects of baited pitfall traps during the dry and rainy seasons at two natural reserves in the Amazon region, each representing different time scales: one covering successional variations (80, 30, 5, and 1 years of recovery from logging) and the other one encompassing three consecutive years at two successional stages (20 and 10 years from logging). We used Generalized Linear Models to analyze interannual and successional changes in diversity, described assemblage structure with a NMDS, and examined compositional variation by partitioning beta diversity into its nestedness and turnover components. Abundance and richness decrease from the rainy to the dry season and towards earlier successional stages but do not differ between years. Assemblage diversity changes differently in interannual and successional scales. During succession, dung beetle assemblages change drastically, following a nested structure due to the appearance of species and functional groups in later successional stages. In contrast, functional group composition does not show consistent changes between years, displaying a turnover structure. This pattern supports non-deterministic changes in dung beetle assemblage structure along forest succession.

物种多样性在空间和时间上有所不同。社区结构和动态的时间变化可以发生在不同的规模上。我们调查了亚马逊甲虫粪甲虫组合随季节，年份和演替阶段的时间变化。我们评估了组合结构在时间尺度之间是否发生变化，以及这种变化是否影响了社区的功能结构。为了实现这些目标，我们在旱季和雨季期间使用亚马逊诱饵陷阱的线性样条在亚马逊地区的两个自然保护区对粪便甲虫进行了采样，每个自然保护区代表不同的时标：一个涵盖了连续的变化（80、30、5和1从采伐中恢复的数年），另一年包括连续两个阶段（采伐后20年和10年）的连续三年。我们使用广义线性模型分析了多样性的年际和连续变化，描述了具有NMDS的组合结构，并通过将beta多样性分为嵌套和周转成分来检查了组成变化。丰度和丰富度从雨季到旱季以及朝着较早的演替阶段减少，但多年之间没有差异。群体多样性在年际和继任尺度上变化不同。在演替过程中，由于在后续演替阶段中物种和功能团的出现，粪甲虫的组合会急剧变化，遵循嵌套结构。相比之下，功能组的组成在几年之间并没有显示出一致的变化，而是显示了营业额结构。