No abstract

No abstract

No abstract

This study presents the results of an assessment of photosynthetic activity and morphometric parameters of Rosa rugosa leaves and their Ni and Cu content from 2015 to 2017 in cities with different anthropogenic loads: Apatity, Murmansk, Monchegorsk. Over 3-year observation cycle we found that the amount of chlorophyll a and b in the leaves of Rosa rugosa increased in cities starting in 2016, relative to the control condition, with the highest values in Monchegorsk and Apatity. The carotenoids content in cities also increased and often prevailed over chlorophyll b. The Ni content in the leaves of Rosa rugosa was estimated to be higher than in the background territory (2.52 mg/kg) and varied from 4.16 mg/kg (Apatity) to 72.67 mg/kg (Monchegorsk). With regard to the amount of Cu, relative to the background (5.88 mg/kg), the excess was less significant: the highest values were found in Monchegorsk (11.98-23.25 mg/kg) and the lowest in Apatity (4.95-8.28 mg/kg). The morphometric analysis of the leaves showed different dynamics in the distribution of indicators in the cities and in the background territory. It was revealed that species is stable and has a high adaptive potential to the urban environment conditions of the Kola North.

Species of Primula genus are indispensable introducents for the Kola North, characterized by compact bushes, bright colors, tolerance to urban environments and predominantly early flowering. The Polar-Alpine Botanical Garden-Institute has been studying species of Primula genus since 1934. The results of introduction studies (from 1948 to present) of 6 Far Eastern species of Primula genus: P. borealis Duby, P. farinosa L., P. jesoana Miq., P. nutans Georgi, P. patens (Turcz.) E. Busch, P. saxatilis Kom. were analyzed in the article. The initial material was obtained by seed exchange with botanical gardens in Russia, the CIS and foreign countries. Phenological observations were carried out according to generally accepted methods, on the basis of which the phenological spectrum of seasonal development of plants were constructed, and survival points (SP) were assessed. The introduction coefficient (IC) was calculated, which reflected the introduction value of the considered group of plants. The method of ecological-geographical analysis was used to compile the introduction forecast. Among the studied species, Primula nutans (SP=11) obtained from the seeds of cultivated plants from Scandinavian countries and P. jesoana (SP=9) were most adapted to the conditions of the Kola Arctic. Two species ( P. borealis, P. patens (SP = 4)) were poorly adapted to the conditions of the region, P. farinosa (SP = 1.0) and P. saxatilis (SP = 1.5) were not tested enough due to a short study period. The study showed that plants living from the tundra to the steppe zone ( P. nutans - I C = 1.57) and, in some cases, plants of the taiga zone reaching the subalpine belt in the mountains ( Primula jesoana - I C= 1.28) were adapted to local conditions. The plants of the tundra zone and the alpine zone in the mountains ( P. borealis - IC = 0.57) were less adapted.