Variations in environmental factors can alter the species distribution pattern in intertidal rocky shores. The Persian Gulf (PG) and the Gulf of Oman (GO) vary substantially with respect to environmental and oceanographic conditions. The abundance and biodiversity of intertidal rocky gastropods in five locations across the northern PG and the GO were compared, and the environmental variables underlying the distribution pattern of these organisms were investigated. A total of 67 gastropod species were identified. The largest average density (294 ind./m²) and diversity (N = 43) for gastropods occurred in the Hotel Lipar station (LIP) located in Chabahar Bay in the GO. Clypeomorus bifasciata (107.43 ind./m²) followed by Cerithium caeruleum (94.67 ind./m²) were the most abundant species. Planaxis sulcatus and Siphonaria spp. occurred in all locations during both sampling occasions. Species richness and abundance of gastropods showed significant differences between LIP and remaining locations. A significant difference was found in assemblage structure across locations. In general, the species richness and density in the locations at GO were significantly larger than those locations in the PG, suggesting that the harsh environmental condition in the PG might be the forcing factor for this diminish. Distinct grouping was observed in both assemblage structure and species composition between locations in the PG and the GO. The spatial and temporal distribution patterns of gastropods assemblages were significantly correlated with variation in salinity and substrate rugosity.

中文翻译：

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北部波斯湾和阿曼斯湾的主要环境变量形成的潮间腹足纲组合

环境因素的变化会改变潮间带多岩石海岸的物种分布格局。波斯湾（PG）和阿曼湾（GO）在环境和海洋条件方面存在很大差异。比较了北部PG和GO上五个位置的潮间带岩石腹足动物的丰度和生物多样性，并研究了这些生物分布模式的环境变量。总共鉴定出67种腹足动物。 腹足动物的最大平均密度（294 ind./m ²）和多样性（N = 43）发生在GO查巴哈尔湾的Hotel Lipar站（LIP）中。Clypeomorus bifasciata（107.43 ind./m ²），接着是cererium caeruleum（94.67 ind./m ²）是最丰富的物种。芝麻螺和Siphonariaspp。在两次采样期间都在所有位置发生。腹足动物的物种丰富度和丰富度表明，LIP和其余位置之间存在显着差异。发现不同位置的组装结构存在显着差异。通常，GO处的物种丰富度和密度显着大于PG中的物种，这表明PG中恶劣的环境条件可能是导致其减少的强迫因素。在PG和GO的位置之间的组装结构和种类组成上都观察到了明显的分组。腹足动物群的时空分布模式与盐度和基质皱纹的变化显着相关。