Abstract

Despite the long history of floristic studies of the Kuril Islands, the central part of the Kuril archipelago, particularly Urup Island, remains poorly studied. The question of the position of Urup Island in the biogeographic and floristic subdivision systems is controversial, which seems to be due to unsufficient floristic data. Studies carried out by the authors in 2019 on the islands of Urup and Iturup provided new data about the distribution, habitats, and population status of 28 indigenous species of vascular plants, including 14 species listed in the Red Data Book of the Russian Federation (2008) and the Red Data Book of the Sakhalin Oblast (2019). Myriophyllum ussuriense was first discovered in the Sakhalin Oblast and recommended for inclusion into the regional list of rare vascular plant species and the Red Data Book of the Sakhalin Oblast. Four species (Corallorhiza trifida, Pedicularis adunca, Salix arctica, and S. chamissonis) were first revealed in the southern Kuril Islands. In addition, eight species (Carex livida, Eleocharis margaritacea, Epipactis papillosa, Juncus articulatus, J. decipiens, Neottia puberula, Poa austrokurilensis, and Utricularia minor) were first found on Urup Island. Occurrence of four species (Isoëtes asiatica, Hydrangea petiolaris, Rhynchospora alba, and Salix fuscescens) on Urup Island was confirmed by new records. The data obtained confirm that Urup Island takes an intermediate position in the floristic subdivision of the Kuril archipelago and represents a transitional zone between the northern and southern Kuril Islands, which is significantly enriched by “southern” East Asian species.

中文翻译：

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千岛群岛的珍稀维管植物种类：分布，生态和种群状况

摘要

尽管千岛群岛的植物研究历史悠久，但千岛群岛的中部地区，特别是乌鲁普岛，仍然研究不足。乌鲁普岛在生物地理学和植物学细分系统中的位置问题是有争议的，这似乎是由于植物学数据不足而引起的。作者于2019年在Urup和Iturup岛上进行的研究提供了有关28种维管植物本土物种的分布，生境和种群状况的新数据，其中包括《俄罗斯联邦红色数据手册》（2008年）中列出的14种）和《萨哈林州红色数据手册》（2019年）。桃金娘最早在萨哈林州发现，并被推荐纳入稀有维管植物物种和萨哈林州红色数据手册的区域清单。四个品种（珊瑚兰，马先蒿adunca，北极柳，和小号。chamissonis）在南千岛群岛进行了首次披露。此外，在乌鲁普岛上首次发现了八种（Carex livida，Eleocharis margaritacea，Epipactis papillosa，Juncus articulatus，J。decipiens，Neottia puberula，Poa austrokurilensis和Utricularia minor）。四个物种的发生（亚洲亚种，八仙花，小白Rhychochospora和山柳（Salix fuscescens））在Urup岛上的新记录已确认。所获得的数据证实，乌鲁普岛在千岛群岛的植物区系中处于中间位置，代表了北千岛群岛和南千岛群岛之间的过渡地带，南亚东亚物种明显丰富了该地区。