Abstract
An invasive species, Alpine penny-cress (Noccaea caerulescens (J. Presl & C. Presl) F. K. Mey.) was for the first time encountered in the Republic of Karelia in the Town of Sortavala in 1909. Over the past 110 years, the species has become quite frequent in the northern Ladoga area, with a fairly rapid dispersal across the area observed before WWII. Further advance of the species to the north and east of this territory has obviously slowed down, although occasional findings have been reported from the very north of the republic (Pyaozersky settlement) and east of Lake Onego (Lobsky settlement). Such a pattern of the species’ current distribution in Karelia can be attributed to the geochemical characteristics of the northern Ladoga area. This territory is rich in heavy metal deposits and ore occurrences, has numerous and extensive outcrops of the crystalline basement, and, as a result, its soils feature elevated background concentrations of heavy metals. Being a metallophyte, N. caerulescens found itself in a favorable environment here. Nevertheless, there is reason to expect further spread of the species across the region.
Highlights
Mey.) was for the first time encountered in the Republic of Karelia in the Town of Sortavala in 1909
Over the past 110 years, the species has become quite frequent in the northern Ladoga area, with a fairly rapid dispersal across the area observed before WWII
Further advance of the species to the north and east of this territory has obviously slowed down, occasional findings have been reported from the very north of the republic (Pyaozersky settlement) and east of Lake Onego (Lobsky settlement). Such a pattern of the species’ current distribution in Karelia can be attributed to the geochemical characteristics of the northern Ladoga area. This territory is rich in heavy metal deposits and ore occurrences, has numerous and extensive outcrops of the crystalline basement, and, as a result, its soils feature elevated background concentrations of heavy metals
Summary
Для выяснения распространения и инвазивности этого вида в Карелии были проанализированы литературные источники и гербарные коллекции, хранящиеся в наиболее важных с точки зрения представленности региональной флоры гербариях: Карельского научного центра РАН (PTZ), Университета г. В настоящий момент известно 123 местонахождения вида в Карелии, 75 из которых подтверждены гербарными образцами, хранящимися в PTZ, 34 – в Н, 10 – в PZV и 4 – в LE (около 140 гербарных образцов с учетом дублетов). В которую внесены сведения с этикеток гербарных образцов, и на ее основании составлены карты распространения вида в четыре разных по продолжительности исторических периода после первой находки. Первый период несколько длиннее других (36 лет) и охватывает 1909–1945 гг., когда область распространения вида в современных границах Карелии была ограничена только Северным Приладожьем, входившим до 1917 г. Третий и четвертый периоды (1971–1995 и 1996–2019 гг.) не имеют особой выраженной специфики, тем не менее охватывают равные промежутки времени и выделение их целесообразно для оценки тенденций расселения вида
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
