Background The sharp increase in tourist visitation of the Azores Archipelago from 2015 onwards raised concerns about the impacts of recreational tourism on native habitats. In response, a project was financed by the Azorean Government to investigate the drivers of biodiversity erosion associated with recreational tourism. Here, we present the data on spider biodiversity found on trails located within the native Azorean forests as they are home to several endemic species of great conservation value. We applied an optimised and standardised sampling protocol (COBRA) in twenty-three plots located in five trails on Terceira and São Miguel Islands and assessed diversity and abundance of spider species at different distances from the trail head and the trail itself. New information Of the 45 species (12435 specimens) collected, 13 were endemic to the Azores (9690 specimens), 10 native non-endemic (2047 specimens) and 22 introduced (698 specimens). This database will be the baseline of a long-term monitoring project for the assessment of touristic impacts on native forest trails. This methodology can also be used on other habitats and biogeograhical regions.

中文翻译：

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亚速尔群岛（葡萄牙）原始森林旅游小径上的蜘蛛（蛛形纲、蛛形纲）标准化清单

背景 从 2015 年起，亚速尔群岛的游客人数急剧增加，引发了人们对休闲旅游对原生栖息地影响的担忧。作为回应，亚速尔群岛政府资助了一个项目，以调查与休闲旅游相关的生物多样性侵蚀的驱动因素。在这里，我们展示了在亚速尔群岛本土森林内的小径上发现的蜘蛛生物多样性数据，因为它们是几种具有重要保护价值的特有物种的家园。我们在位于 Terceira 和 São Miguel 群岛的 5 条小径的 23 个地块中应用了优化和标准化的采样协议 (COBRA)，并评估了距小径头和小径本身不同距离的蜘蛛物种的多样性和丰富度。收集到的45个物种（12435个标本）的新信息，13 个是亚速尔群岛特有的（9690 个标本），10 个是本地非地方性的（2047 个标本）和 22 个引入的（698 个标本）。该数据库将成为评估旅游对原生林道的影响的长期监测项目的基准。这种方法也可以用于其他栖息地和生物地理区域。