In mangroves, species specific spatial habitat zonation preference of fiddler crabs could influence the functioning of mangrove ecosystems. Spatial zonation of fiddler crabs in tropical Malaysian mangroves across different temporal scales has not been studied extensively. In this study, the abundance and species richness of several fiddler crab species across a mangrove intertidal zone were examined in relation to environmental variables. Fiddler crab abundance was sampled with salinity, pH, temperature, and sediment grain size in three mangrove sites in Penang Island, Malaysia. The sampling design involved collecting crabs and environmental habitat variables in six 2 m × 2 m quadrats within three mangrove study sites from March 2017 to February 2018. Data were analysed using multivariate (PERMANOVA, SIMPER, and BEST in PRIMER v7.0) and univariate analyses (ANOVA and Pearson’s r in STATISTICA v 13.30). Univariate and multivariate analysis revealed multiple spatial and temporal scales influenced each fiddler crab species differently (ANOVA p < 0.05). Fiddler crab abundance varied across and within sites, intertidal zones, and sampling months (PERMANOVA, p < 0.001). Austruca annulipes, Gelasimus vocans and Tubuca paradussumieri were found mostly at the lower intertidal zone, which was characterized by a higher sand faction. Tubuca rosea, Tubuca forcipata, and Austruca bengali occupied and coexisted in the middle and higher zones of the intertidal, although this pattern varied across the different sites in this study. BEST analysis indicated that porewater salinity and sediment particle size were important factors in structuring patterns of fiddler crab assemblages. Based on univariate correlation analyses, the total abundance of fiddler crab increased with increased temperature (temperature ranged from 26.9 °C to 31.7 °C), and increased porewater salinity (salinity ranged from 10‰ to 35‰).

在红树林中，招潮蟹的物种特定空间生境分区偏好会影响红树林生态系统的功能。马来西亚热带红树林中不同时间尺度的招潮蟹的空间分带尚未得到广泛研究。在这项研究中，研究了红树林潮间带几种招潮蟹物种的丰度和物种丰富度与环境变量的关系。在马来西亚槟城岛的三个红树林地点对招潮蟹的丰度进行了采样，包括盐度、pH 值、温度和沉积物颗粒大小。抽样设计涉及从 2017 年 3 月至 2018 年 2 月在三个红树林研究地点的六个 2 m × 2 m 样方中收集螃蟹和环境栖息地变量。使用多变量（PRIMER v7.1 中的 PERMANOVA、SIMPER 和 BEST）分析数据。0) 和单变量分析（方差分析和 Pearson's r in STATISTICA v 13.30）。单变量和多变量分析显示，多个时空尺度对每个招潮蟹物种的影响不同（方差分析 p < 0.05）。招潮蟹丰度在站点、潮间带和采样月份之间和内部各不相同（PERMANOVA，p < 0.001）。Austruca annulipes、Gelasimus vocans和Tubuca paradussumieri主要发现于较低的潮间带，其特征是沙系较高。Tubuca rosea、Tubuca forcipata和Austruca bengali在潮间带的中高带占据并共存，尽管这种模式在本研究中的不同地点有所不同。BEST分析表明，孔隙水盐度和沉积物粒度是招潮蟹组合结构模式的重要因素。基于单变量相关分析，招潮蟹总丰度随着温度升高（温度范围为26.9°C至31.7°C）和孔隙水盐度增加（盐度范围为10‰至35‰）而增加。