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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effect of the coniferous forest - grassland edge on ground vegetation in the mixed European forest zone, Lithuania

100%
Marozas V.
Dendrobiology
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2014
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tom 71
The objective of this study was to estimate the edge effect on the species richness in agriculturally maintained forest-grassland boundaries of coniferous forest and to determine how species respond to a forest edge. We hypothesised that species number, cover of herbs and mosses is higher in the edge, and species penetrates from nearby grasslands into forest interior. The study was conducted in the Southwestern Lithuania. The edge effect on overall herbaceous species composition of coniferous forests was evaluated by Canonical Correspondence Analysis. The species richness of herbs and mosses in the coniferous forest was highest in the forest edge and declined towards interior. The highest decrease in the number of species occurred within 0 to 5 m to the edge. The highest cover of herbs and mosses was in the forest edge and decreased towards the forest interior. CCA biplot showed a good correlation of overall species composition and the distance to the forest edge. Distribution of species along edge to interior gradient depended on the species response to different ecological factors. Ellenberg value of light was higher in the edge. Ellenberg value of nitrogen was higher in the forest interior.
2
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Diurnal and seasonal soil CO2 efflux variation in Scots pine (Pinus sylvestris L.) forests in the European hemi-boreal zone, Lithuania

63%
Kucinskas O., Marozas V.
Journal of Elementology
|
2021
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tom 26
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nr 3
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The spread, intensity and invasiveness of the Acer negundo in Riga and Kaunas

51%
Straigyte L., Cekstere G., Laivins M., Marozas V.
Dendrobiology
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2015
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tom 74
Ashleaf Maple (Acer negundo L.) was first introduced in Latvia and Lithuania at the beginning of the 19th century. It is the most widely distributed alien maple species to be found in the parks and greeneries of Riga and Kaunas. In recent decades, the spread and invasion of this species has been observed. The aim of this research was to determine the extent and effects of the invasiveness A. negundo in Riga and Kaunas. The degree of invasion by this species’ was estimated by applying the Pest Plant Prioritization Process, which is based on the Analytic Hierarchy Process method. The results showed that the invasive degree of box elder was very high (0.788); the present compared to potential distribution rating was medium high (0.71) and the social, environmental and economic impact score was low (0.23). The Final Pest Plant Score for A. negundo was medium (0.4506). The obtained estimates indicated that box elder was invasive and was able to spread rapidly into new riparian areas.
4
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Accumulation of heavy metals in forest dwarf shrubs and dominant mosses as bioindicators of atmospheric pollution

51%
Kasiuliene A., Paulauskas V., Marozas V., Waara S.
Journal of Elementology
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2019
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tom 24
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nr 3
5

The accumulation of heavy metals Pb, Cu and Cd at roadside forest soil

51%
Grigalaviciene I., Rutkoviene V., Marozas V.
Polish Journal of Environmental Studies
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2005
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tom 14
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nr 1
The accumulation of heavy metals at the roadside has been studied by the analysis of topsoil samples. Concentrations of the elements Pb, Cu and Cd were measured on 81 topsoil samples collected from three similar sites located near the Vilnius-Klaipėda highway. The soluble and total content of heavy metals was determined in fractions >2mm by atomic absorption spectrophotometer employing an air–acetylene flame. Different chemical extractants AAAc-EDTA and DTPA were used for determination of extractable elements. The comparison of the results indicates that AAAc-EDTA extraction solution is the most efficient and well suited for determination of Pb, Cu and Cd. The highest heavy metals concentration was found at a distance of 5 meters from the road and it exceeded the local background in the forest soils for all metals. Contents of metals tended to decrease with increasing distance from the highway. The results showed that the soil near the highway had significant enrichment, particularly in Pb, whose easily mobile amount exceeded maximal limited concentrations at a distance of 5-40 meters, and to a lesser extent with Cd and Cu.
6
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Effect of shelterwood cuttings on soil chemical properties in Scots pine (Pinus sylvestris L.) forests in Europe's hemiboreal zone, in Lithuania

39%
Marozas V., Sasnauskiene J., Dautarte A., Gavenauskas A., Sabiene N., Armolaitis K.
Journal of Elementology
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2018
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tom 23
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nr 1
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Genetic diversity of Lithuanian populations of Juniperus communis L. in relation to abiotic and biotic factors

39%
Vilcinskas R., Jociene L., Rekasius T., Marozas V., Paulauskas A., Kupcinskiene E.
Dendrobiology
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2016
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tom 76
Juniperus communis L. is increasingly threatened in many parts of Europe, including the Baltic region. Our present study was aimed at evaluation of genetic diversity of J. communis populations of Lithuania. Fourteen selected populations differed in geography and habitats (coastal brown dunes covered with natural Scots pine forests, further referred as B; J. communis shrubs, F; transition mires and quaking bogs, D; subcontinental moss Scots pine forests, G; xero-thermophile fringes, E). Molecular variance was analyzed among populations (140 individuals, in total), employing 14 Inter Simple Sequence Repeat (ISSR) markers. Percentage of polymorphic loci differed between populations belonging to the different habitat type, being the highest for population representing habitat F (68.2%) and the lowest for populations D (42.9%). The data demonstrate the possibility to underestimate or overestimate this parameter if some habitat populations are bypassed. Means per population of Nei‘s gene diversity and Shannon‘s information indexes, were 0.158 and 0.239, respectively. Significant correlation between genetic and geographic distance of populations of J. communis was documented by Mantel test. Bayesian analysis of ISSR data has separated populations of Southern Lithuania from Northern part. Juniperus communis populations representing different habitats showed moderate interpopulation variance at ISSR loci. In ISSR-based dendrograms, individuals were correctly allocated to populations, even in case of populations growing in 0.5 km vicinity (habitats D and G). Among all populations the most distinct one was representing habitat of J. communis shrubs (F) protected by EUNIS. Principal coordinate analysis of weighted averages of Ellenberg’s indicator values (EIV) for herbaceous species, separated populations according to habitat type, while the same type analysis of ISSR data allowed distinguishing E habitat populations from populations of all other habitat type but G. Our study shows that on the local (Lithuanian) scale, molecular variance between populations of J. communis at ISSR loci might be related to habitat type. For evaluation and preservation of diversity of J. communis, different assessment methods should be included and management strategies should be directed in the way to retain variety of habitats encompassing both widely spread and less common ones.
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