The Role of Geological Nature Monuments of the Kandalaksha and Teresky Coasts of the White Sea in the Conservation of Rare Plants

On the Kandalaksha and Tersky coasts of the White Sea there are three geological nature monuments of regional significance, created to preserve unique geological or mineralogical objects: “Fluorites of Yolokorgskii Navolok,” “Granitoids of Mikkov Island,” and “Amethysts of Cape Korabl.” In 2019–2022, comprehensive field botanical and geological studies were carried out, the purpose of which was to assess their environmental significance. All three nature monuments have a geological profile. They preserve manifestations of rare mineralization, outcrops of characteristic or rare rocks with visual signs of their composition, structure and texture, as well as other clear evidence of the processes of their formation. In addition to valuable geological formations, protected plant species listed in the Red Books of Murmansk oblast and/or the Russian Federation were found at all three sites. From a botanical point of view, the ecosystems of Mikkov Island and Korabl Cape have a significant importance. The diversity of plants on Korabl Cape is determined by geological structures that are not present in other strictly protected nature areas of Murmansk oblast. The largest population of sand pink (Dianthus arenarius) in Murmansk oblast was found here, which is also not represented in other strictly protected nature areas of the oblast. The diversity of plants on Mikkov Island is primarily due to the complex structure of the vegetation cover and the Holocene history of this area. Rock formations play an insignificant role in preserving habitats of rare plant species. Despite the presence of vein body outcrops on the surface within the boundaries of the nature monument “Fluorites of Yolokorgskii Navolok,” suitable habitats for rare plant species are very limited due to its small area. Currently, anthropogenic impact varies greatly across the three nature monuments studied. The lowest impact is typical for the Yolokorgskii Navolok, moderate for Mikkov Island, and very high for Korabl Cape, which is reflected both in the direct transformation of ecosystems and is determined by the number of alien species found. For the last two nature monuments, it is recommended to change the profile from geological to complex (landscape). In order to preserve the ecosystems of Korabl Cape, it is recommended to strengthen the protection regime, both to avoid illegal extraction of geological samples and to preserve populations of rare plant species. The high importance of the proposed changes is explained by the increasing recreational pressure on the ecosystems of natural monuments caused by the growing popularity of Arctic tourism.

nature conservation, nature monuments, granitoids, amethysts, fluorites, plants, protected species, Red Data Books, Murmansk oblast