Benthic diatoms that produce and live inside mucilage tubes are prominent pioneer colonizers of marine substrata. This adaptation is an ecological strategy related to mechanical protection against wave action and desiccation. In this article, we identify Nitzschia martiana based on morphological and ultrastructural analyses from several samples, collected from different localities. We also analysed the potential distribution model of the species to identify potential areas along the Brazilian coast with high environmental suitability for its occurrence. The distribution modelling, associated with our wide sampling, allowed us to present a robust characterization of the distribution of N. martiana along the Brazilian coast. Previous records were restricted to the coast of the states of Paraná, Santa Catarina, and Pernambuco. Our results confirmed the occurrence of the species in 14 new localities, over a temperature range of 18–27°C, always occurring as macroscopic tufts, in regions exposed to direct sunlight during low tide periods, on sand, coral reefs and rocks.

中文翻译：

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Nitzschia martiana (CA Agardh) Van Heurck (Bacillariophyceae)：巴西海岸的分布模型和新记录

在粘液管内产生和生活的底栖硅藻是海洋基质的杰出先驱殖民者。这种适应是一种生态策略，与针对波浪作用和干燥的机械保护有关。在本文中，我们根据从不同地点收集的几个样本的形态学和超微结构分析来识别 Nitzschia martiana。我们还分析了该物种的潜在分布模型，以确定沿巴西海岸对其发生具有高度环境适宜性的潜在区域。分布建模与我们的广泛抽样相关，使我们能够对巴西海岸的 N. martiana 的分布进行强有力的表征。以前的记录仅限于巴拉那州、圣卡塔琳娜州和伯南布哥州的海岸。