Land and freshwater molluscs of Gran Canaria (Spain)

The Canary Islands (Spain) are an archipelago of the coast of northwest Africa. Gran Canaria is the third-largest island and located in the centre (Carracedo & Troll, 2016). The island contains a number endemic land snail species (e.g. Brito & Fraga, 2010). Freshwater molluscs are of smaller significance, but are also present. The research of land and freshwater molluscs of the Canaries mainly goes back to the 19th century with the famous works of Webb & Berthelot (1833), Shuttleworth (1852a, 1852b), Mousson (1872), Wollaston (1878), Mabille (1884), Odhner (1931), and others. Recent checklists are available (Groh, 1985; Bank et al., 2002; Brito & Fraga, 2010; Helixebas, 2019) and some more recent papers are cited further in this article. Nevertheless, taxonomic research is still largely based on these old works and many species were never found again since their description or the ecology or proper range is not known. This, together with the threats of global warming (Luque et al., 2013) and the increase of demographic and touristic pressure (Ibáñez et al., 1997) could (and probably already has) detrimental consequences for the survival of these species (see also the assessments on https://www.iucnredlist.org/). Therefore, there is an urgent need for information on ecology, distribution and taxonomy. “Land and freshwater molluscs of Gran Canaria (Spain)” is an occurrence dataset containing 389 observations of 62 different taxa of land and freshwater molluscs encountered on Gran Canaria, an island central in the Canarian archipelago (Spain). Various sites were inspected in a period between 1988 to 2020. The aim is to contribute to the knowledge on the ecology and distribution of these species on the island such that it may aid conservation and research of these organisms in the future. The dataset is published as a standardized Darwin Core Archive and includes for each observation a stable occurrenceID, scientific name, date, and location of the observation, as well as info on lifeStage and organismQuantity, and supplementary remarks on the determination and the observation itself. We have released this dataset to the public domain under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication (https://creativecommons.org/publicdomain/zero/1.0/).

西班牙加那利群岛位于西北非海岸线附近，乃一群岛屿。其中，大加那利岛位列第三大岛屿，并坐落于群岛中央地带（Carracedo & Troll，2016年）。该岛孕育着多种特有陆生蜗牛物种（例如，Brito & Fraga，2010年）。淡水软体动物虽在重要性上略逊一筹，但仍有所分布。对加那利群岛陆生及淡水软体动物的研究主要追溯至19世纪，著名学者Webb & Berthelot（1833年）、Shuttleworth（1852a，1852b）、Mousson（1872年）、Wollaston（1878年）、Mabille（1884年）、Odhner（1931年）等人的杰出作品。近期已编制出清单（Groh，1985年；Bank等，2002年；Brito & Fraga，2010年；Helixebas，2019年），并在本文中进一步引用了一些最新的研究论文。然而，分类学研究仍主要依赖于这些古老文献，且许多物种自其描述以来便再无发现，其生态或适宜分布范围亦不为人知。此外，全球变暖（Luque等，2013年）以及人口和旅游压力的加剧（Ibáñez等，1997年）可能（且很可能已经）对这些物种的生存造成了不利影响（亦见https://www.iucnredlist.org/上的评估）。因此，对生态、分布和分类学的信息需求迫切。‘加那利群岛（西班牙）陆生及淡水软体动物’是一个出现数据集，包含在大加那利岛（位于西班牙加那利群岛中心）发现的62个不同物种的389个观察记录。自1988年至2020年期间，对多个地点进行了考察。该数据集旨在丰富对该岛物种生态和分布的认知，以期为未来这些生物的保护和研究提供帮助。数据集以标准化的Darwin Core档案格式发布，包含每个观察记录的稳定出现ID、学名、日期、观察地点，以及生命阶段和生物数量信息，以及关于鉴定和观察本身的补充说明。我们已将此数据集发布至公共领域，遵循CC0 1.0通用（CC0 1.0）公共领域贡献（https://creativecommons.org/publicdomain/zero/1.0/）。