Wyniki wyszukiwania - Biblioteka Nauki

1

Low-intensity cutting leads to similar forest structure and tree diversity as in protected stands

100%

Dobrowolska D. , Orman O. , Tiwari R. M.

Polish Journal of Ecology

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2020

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tom 68

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nr 2

2

Porównanie składu olejków eterycznych igliwia jodły (Abies alba Mill.) pochodzącej ze stanowisk zróżnicowanych pod względem wysokości nad poziomem morza

86%

Kuźma P. , Balcer A. , Staniszewski P. , Obiedziński M. W.

Aparatura Badawcza i Dydaktyczna

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2014

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tom T. 19, nr 1

47-51

PL

Igły jodły pospolitej wykazują działanie bioaktywne i lecznicze ze względu na obecność w nich olejku eterycznego, który wykazuje pozytywne działanie m.in. w schorzeniach układu oddechowego, w leczeniu chorób sercowo-naczyniowych, jest także stosowany jako środek dezynfekujący i antybakteryjny. Celem badań było porównanie składu chemicznego olejku eterycznego igliwia jodły pospolitej pozyskanego ze stanowisk o różnej wysokości nad poziomem morza: 650 m i 1050 m. Analizę składu chemicznego olejku eterycznego przeprowadzono przy użyciu chromatografu gazowego sprzężonego ze spektrometrem mas.

EN

Fir needles essential oil has bioactive and pharmacological activities. It has a positive effect, e.g. in diseases of the respiratory system, in the treatment of cardiovascular diseases or as a disinfectant. The aim of the study was to compare the chemical composition of essential oils of Silver fir needles obtained from the positions at different heights above sea level: 650 meters and 1050 meters. The analysis of the chemical composition of the essential oil was carried out using a gas chromatograph coupled with a mass spectrometer.

3

Embryogenic callus induction and differentiation in silver fir (Abies alba Mill.) tissue cultures

86%

Nawrot-Chorabik K.

Dendrobiology

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2008

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tom 59

31-40

EN

The research was conducted on explants of silver fir (Abies alba Mill.) deriving from several forest districts in southern Poland. The study encompassed the influence of the origin of plant material, type of explants, kind of substances used for explants sterilization, PPM and the type of medium on the ability to form embryogenic callus and to develop somatic embryos in silver fir explants. From the plant material collected in three sites, 57 clones were obtained from mature zygotic embryos; this produced an embryogenesis frequency of 6%. Embryogenic callus was obtained with a diameter of 65–70 mm depending on the material origin. The best medium for development of callus inducted on embryos isolated from mature silver fir seeds was the SH medium. Somatic embryos were formed in a globular stadium (24 pieces) on this medium. The 10% solution of NaOCl (used for 15 minutes) turned out to be the most effective substance for seed sterilization.

4

Variation patterns of mitochondrial DNA of Abies alba Mill. in suture zones of postglacial migration in Europe

86%

Gomory D. , Longauer R. , Liepelt S. , Ballian D. , Brus R. , Kraigher H. , Parpan V. I. , Parpan T. V. , Paule L. , Stupar V. I. , Ziegenhagen B.

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tom 73

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nr 3

EN

Thirty silver fir populations originating from the putative suture zones of the postglacial recolonization (Slovenia, Bosnia and Hercegovina, Ukraine) were studied using a mitochondrial nad5-4 gene marker. The geographical distribution of mtDNA haplotypes in the Ukrainian Carpathians and their northern foothills indicates a very recent meeting of migration streams arriving from the Romanian Carpathians and Central Europe. In the western part of the Balkan Peninsula, two counterparallel migration streams are the most plausible explanation of the pattern observed. The haplotype typical for the Balkan Peninsula predominates along the Adrian coast, whereas the CentralEuropean haplotype is more represented in the inland.

5

Changes in the silver fir forest vegetation 50 years after cessation of active management

72%

Woziwoda B. , Kopec D.

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nr 2

EN

Knowledge of the vegetation and the monitoring of its changes in preserved areas is an essential part of effective conservation policy and management. The aim of this study was to assess the effectiveness of traditional methods of conservation of silver fir forests. The study analyses the changes in the structure and species composition of a temperate forest excluded from the commercial silvicultural management for 50 years, and since then protected as a nature reserve. The study is based on a comparative analysis of phytosociological reléves made on permanent plots in 1961, 1982, 1994 and 2011. PCA and ecological indicator values were analyzed, as well as characteristic species based on an indicator value (IndVal) index. Results revealed significant and dynamic changes in the forest structure and composition. The mixed coniferous-broadleaved forest with Abies alba and diverse ground flora, considered in the 1960s as valuable and worthy of conservation, was found to have been anthropogenically transformed and unstable. Significant reduction in the human impact was followed by spontaneous regeneration of oak–hornbeam forest. However, the directional process of changes in vegetation was modified by such silvicultural treatments as selective cutting of trees and gap creation, all intended for silver fir maintenance. The results show that Carpinus betulus effectively outcompeted Pinus sylvestris, Picea abies, Quercus robur and A. alba. Changes in the forest overstory and understory caused temporal changes in the habitat conditions reflected in changes in the ground vegetation composition. The proportion of light-demanding and oligotrophic species significantly decreased, while the contribution of species with a wide ecological amplitude, i.e. more shade-tolerant and nutrient-demanding – increased. The share of A. alba was reduced. Species defined in this study as most valuable, should be actively protected, or selection of conservation targets should be re-evaluated.

6

The impact of overstory species and soil properties on the growth of planted silver fir Abies alba in the Karkonosze Mountains, Poland

72%

Dobrowolska D. , Pawlak B. , Olszowska G.

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2021

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tom 69

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nr 1

7

First record of Hericium flagellum (Basidiomycota) from the “Olbina” nature reserve in Wielkopolska Voivodship, Poland

72%

Kujawska M. B. , Stasinska M. , Leski T. , Rudawska M.

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tom 54

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nr 2

8

Evaluation of BrdU influence on sister chromatin exchange in Arctic and silver fox

72%

Grzesiakowska A. , Klott A. , Kuchta-Gladysz M. , Niedbala P. , Otwinowska-Mindur A. , Szeleszczuk O.

Folia Biologica

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2017

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tom 65

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nr 2

9

Genetic overload of silver fir (Abies alba Mill.) from five populations from central Bosnia and Herzegovina

72%

Ballian D.

Folia Forestalia Polonica. Series A . Forestry

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2013

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tom 55

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nr 2

EN

The research was conducted with a view to establishing physiological parameters of the silver fir (Abies alba Mill.) with regard to germination energy, absolute germination and genetic overload produced by silver fir populations. The intention was to identify significant variability within populations and subpopulations, or rather within the two combined, and to give recommendations on the usage and usability of seeds from specific populations. The results form a basis for establishing silver fir genetic overload within five fir populations of central Bosnia and Herzegovina. The results of research on the characteristics such as absolute seed weight, germination energy and absolute germination are within a scope of previous studies. The studied physiological characteristics of silver fir seeds in the central Bosnia area showed distinct individual and inter-population variability when compared to variability of the subpopulations analyzed. The inclusion of non-physiological data (height, DBH, age and the presence of mistletoe) concerning sampled trees proved to be effective new quality of research. No correlation was found between DBH and seed physiological characteristics but increased tree height had a positive effect on seed quality in terms of absolute germination and growth, proportional to tree height. This in turn shows that seeds should be collected only from trees of above average height, because they are less genetically overloaded. The characteristics of healthy but ungerminated seeds from less tall trees displayed lower parameter values, also indicating that seeds should be collected from taller than average trees only. The presence of mistletoe had a very interesting effect of increasing rotten seeds percentage, and therefore reducing seed quality. Accordingly, seed collection should be limited to trees not affected by mistletoe, however further research on this aspect is required.

10

Charakterystyka lasu grądowego z jodłą w rezerwacie „Jamno”

72%

Woziwoda B. , Pawicka K. , Wolski G. J.

Biuletyn Szadkowski

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2012

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nr 12

127-143

EN

The “Jamno” nature reserve was established to protect the forest community with European silver fir Abies alba Mill. on the northern border of natural occurrence of this tree species in Poland. The results of current phytosociological studies (done in 2011) show that the oak-hornbeam forest – Tilio-Carpinetum calamagrostietosum association with Abies alba, exist within reserve. The present structure and species composition of studied community is determined by spontaneous changes of tree stand. The different proportion of silver fir in shrub and tree stand layers indicate the dynamic changes within this species population.

11

Low-Intensity Cutting Leads to Similar Forest Structure and Tree Diversity as in Protected Stands

72%

Dobrowolska D. , Orman O. , Tiwari R. M.

Polish Journal of Ecology

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2020

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tom Vol. 68, nr 2

145--158

EN

Forest structure in Europe has been shaped by forest management which may vary from intensive clearcuttings to single-tree selection cuttings. Most investigations on silver fir forests have been carried out in the mountains. Forests in lowlands have been less studied, although many of them are of natural origin. We investigated and assessed potential stand structural differences between managed and partially protected mixed silver fir stands. We also assessed the impact of silvicultural activities that led to the development of current stand structures of mixed Abies alba stands. The study was conducted in Janów Forests in south-eastern Poland. We randomly established 40 circular nested plots in three managed and three partially protected stands. Although both managed and partially protected stands differed in the intensity of management and the type of selection cuttings, we found little difference in the composition and stand structure. Regardless of management intensity all stands were characterized by diversified natural regeneration, where the main tree species, especially in the phase of seedlings, was silver fir. The basal area of standing dead trees was higher for the protected than managed stands, but the differences were not significant, whereas the mean volume of dead standing trees was significantly higher in the reserve. Both in managed and protected stands, silver fir benefited from the management measures mimicking natural processes. Our results suggest that low intensity forest management for silver fir dominated forests will be crucial for conserving these forests and their unique structure in the region.

12

Abietetum albae plant association from "Murowaniec" nature reserve in Central Poland

72%

Gorski P.

Dendrobiology

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2005

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tom 54

19-27

EN

The study presents the structure and floristic composition of mixed fir forest at the northern range limit of European silver fir (Abies alba) in Poland. Phytosociological data were collected in the forest reserve “Murowaniec”,which was established to protect mixed forest ecosystems with a large contribution of fir trees. Changes in floristic composition of these coniferous forests in the last 40 years were discussed. Protective measures are suggested in this paper, aiming at conservation of the forest ecosystems of the reserve.

13

The silver fir Abies alba Mill. in the communities of the Vaccinio-Piceetea class in the Poludniowopodlaska Lowland

72%

Marciniuk P. , Wierzba M.

Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

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2004

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tom 69

14

Importance of genetic analysis of Abies alba population for forest breeding

72%

Mejnartowicz L.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

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2007

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tom 92

15

Variation in structure of needles of silver fir [Abies alba Mill.] saplings growing under the canopies of diverse tree species

72%

Robakowski P. , Samardakiewicz S. , Kierzkowski D.

Polish Journal of Ecology

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2004

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tom 52

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nr 4

EN

Morphological and anatomical traits of needles of Abies alba saplings growing under the canopies of Picea abies, Fagus sylvatica, Betula pendula, Pinus sylvestris and Larix decidua were studied. An acclimation of the needles to different light conditions created by the principal species of the canopy was assessed using different microscopic methods. Length, width, needle area, stomatal density, parenchyma thickness, resin ducts diameter, central cylinder size and other traits of needles allowed to determine their structural plasticity in response to irradiance level. Leaf mass to area ratio, palisade parenchyma thickness, diameter of resin ducts increased, whereas width/thickness ratio and needle thickness/parenchyma thickness ratio decreased with increasing canopy openness. Variation in the investigated patterns of the needles reflected their structural plasticity and also an ability of silver fir saplings to acclimate to irradiance under the canopies of diverse tree species.

16

Genetic analysis of silver-fir populations in the North Carpathian and Sudeten Mountains

72%

Mejnartowicz L.

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tom 73

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nr 4

EN

Seeds collected from individual trees in the 16 Carpathian and 2 Sudeten silver-fir (Abies alba) populations were studied with the starch gel electrophoresis in megagametophytes using 14 enzyme systems with 28 loci. The results show that the geographical distance between populations are in a small part reflected in genetic distances. There are two main groups of populations: Sudeten and Carpathian with a very big genetic distance between them. Other populations consist of a few small groups with low gene flow between them (Nm = 3.286). About 80% of genetic variation is located within populations (FST = 0.223). Average values for genetic multiplicity and diversity for Carpathian populations are as follows: number of alleles per locus: Na = 2.308, with effective number of alleles Ne = 1.552 and proportion of polymorphic loci 71.21%. The mean number of alleles per locus (Na) varied from 2.107 to 2.607 in population. The mean effective number of alleles per locus (Ne) ranged from 1.429 to 1.662. Average Fis for Carpathian populations was -0.021, which means that there is small excess of heterozygotes. The average observed heterozygosity amounted to Ho = 0.275 and expected heterozygosity was He = 0.269. The dendrogram structure and presence of rare alleles found in silver-fir of Czech, and Slovakian populations allow for a hypothesis that in postglaciation the silver-fir moved into the Polish Carpathians not westward from the east but from the south along river valleys from some Balkan refuges, getting North bypassing the High Tatra Range. This way, a highly diversified set of populations originated, differ in the presence of rare alleles. This differentiation is not prevented by a relatively small flow of genes between populations. The calculated gene flow Nm = 3.286 also indicates isolation between the populations. It means 3.3 immigrants per generation into the studied populations.

17

Natural regeneration of the European silver fir in the Sudety Mountains on soils with different particle size distribution

72%

Filipiak M. , Komisarek J. , Nowinski M.

Dendrobiology

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2003

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tom 50

EN

In the 40 fir localities in the Sudety Mountains, varying in site conditions and the degree of natural regeneration development were taken soil samples from the mineral horizon and were subjected to particle size distribution analysis. The best regeneration of fir stands has been reported on medium-textured soils, containing a few percents of the clay fraction and from 50to 60% of sand.The poorest regeneration was reported on silty soils, located in the lower parts of slopes. In comparision with the Carpathians, spectrum of conditions in which firs grow in the Sudety Mountains is clearly shifted from coarse-textured soils to medium-textured soils.

18

Age structure of natural regeneration of European silver-fir (Abies alba Mill.) in the Sudety Mts.

72%

Filipiak M.

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2002

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tom 48

EN

In this paper, is presented data on the abundance and age structure of natural regeneration of silver fir in permanent plots in Sudety Mts. In the studied plots the abundance of fir seedlings is usually markedly lower than in the well-regenerating Carpathian forest stands. The major reason for this is the lower contribution of fir trees to forest stands in the Sudety Mts. as compared with the Carpathians. In most plots the process of regeneration is long and extended over many years. Largest numbers of seedlings developed in years of good fir cone crops. An important role in the process of natural regeneration of Abies alba in the Sudety Mts. are played by type of site, kind of humus and herb layer density. Most of the studied forest stands in the Sudety are not dense, so the herb layer is well-developed, that strongly restrain fir regeneration especially in fartile soils.

19

Forest communities with silver fir Abies alba Mill. participation versus forest habitat types in the area of the Beskid Maly range

72%

Barc A.

Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

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2004

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tom 69

20

Analiza makroskopowej budowy oraz gęstości drewna jodły (Abies alba Mill.) w zasięgu jej naturalnego występowania w Polsce

58%

Niedzielska B.

Acta Agraria et Silvestria. Series Silvestris

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1989

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tom 28