Wyniki wyszukiwania - Biblioteka Nauki

1

Global scenario of Acrocarpus fraxinifolius Wight and Arn. - A future tree of Agro forestry

100%

Mishra G. , Pandey A. K. , Arunachalam M. K. , Rao S.

International Letters of Natural Sciences

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2015

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tom 03

EN

Acrocarpus fraxinifolius portrait one among the mainstay of agro forestry in Asian tropics. The lofty tree fortified a substantial impact in every horizon of life. The evergreen, deciduous tree of Fabaceae family stands tall about 30-60 m endowed with unique properties which idiosyncrasies it in the plant kingdom. Surpassing the adverse climatic conditions, A. fraxinifolius serves as a shade tree for tea and coffee plantation and epitomises as a multipurpose avenue tree culminating to the culture of agro forestry. Mundani in bloom is a spectacular appearance bestowed with scarlet crimson red flowers attracting infinite migratory birds and insects. The ancestral gene with indelible memory gravitate this extraordinary majestic tree to aestivate and adapt to strongest survive.

2

Plantacje drzew w gospodarstwach rolnych

75%

Latacz H.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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2001

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nr 10

12

3

Dendroclimatic regions of Douglas fir Pseudotsuga menziesii (Mirb.) Franco in western and northern Poland

75%

Feliksik E. , Wilczynski S.

Dendrobiology

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2004

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tom 52

9-15

EN

This study concerned 26 forest stands with Douglas fir situated in Lower Silesia, Great Poland, Pomerania, Warmia and Masuria. Each stand was represented by 24 trees. From each tree an increment core was taken by Pressler’s borer. The principal components analysis showed that the first three principal components accounted for 73% of the variation of chronologies in total. The first principal component was the most convergent with the mean air temperature curve for January–March, the second with the total precipitation for June–August, and the third with the mean temperature for June–August. The first principal component always integrated the chronologies and decided on a similar rhythm of changes in the tree-ring widths. The annual variation of tree-ring widths was also affected by precipitation in summer (June–August), but this differentiated the chronologies. This was reflected by the dispersion of chronologies in respect to the eigenvectors of the second principal component. The third principal component also differentiated the chronologies. Separate groups were formed by the most eastern and the most western localities of the territory under investigations. Thus the Douglas fir growth reactions were mainly affected by the thermal and pluvial conditions of summer and, to a lesser, degree by the thermal conditions of winter. On the basis of these results it was possible to distinguish the dendroclimatically homogeneous regions in western and northern Poland.

4

Effect of soil bulk density on forest tree seedlings

75%

Kormanek M. , Banach J. , Sowa P.

International Agrophysics

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2015

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tom 29

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nr 1

EN

The paper presents the results of an analysis of the influence of soil bulk density in a forest nursery plot on the growth and quality parameters of Scots pine and European beech seedlings. Particular density variants were obtained using a tractor device exerting controlled pressure on the soil, while field examinations were performed on an area of ‘Kłaj’ forest nursery in Niepołomice Forest District. Three series of plots were prepared for each species, applying a unit pressure of the values of 50, 100, 150, 200, 250 kPa, corresponding to the dry bulk density in the range of 1.03-1.19 g cm-3, and control plots without the pressure. Seeds of the examined species were sown on the prepared plots, and after 6 months of growth the seedlings were subjected to biometric analysis determining differentiation in root neck diameter, length of the above-ground part and root system, as well as dry mass of particular parts of the plant. The quality of the seedlings was also determined using the method of Schmidt-Vogt. The results obtained show that the change in dry bulk densitysoil significantly affected most of the growth parameters of theexamined seedlings. Especially high negative correlations were obtained for the length and dry mass of the root system. A significant influence of dry bulk density variant on all growth parameters of Scots pine seedlings, and on some parameters of European beech was demonstrated. An increase in soil bulk density clearly caused also a deterioration of European beech seedlings quality.

5

Breeding programmes of Norway spruce Picea abies (L.) Karst. in the Czech Republic

75%

Hynek V.

Dendrobiology

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2004

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tom 51 Supplement

EN

In the Czech Republic, Norway spruce has a natural representation in all forest altitudinal vegetation zones, in some of which (FAVZ 1, 2 and 9), however, it is scarce. The three basic climatic ecotypes of spruce identified in the Czech territory, i.e. an upland ecotype, a higher elevation ecotype and a mountain ecotype, can be characterised on the basis of the forest altitudinal vegetation zones of their origin. The paper presents the breeding work completed so far and all the breeding programmes implemented for Norway spruce, including projects worked out for the Krkonoše National Park.

6

Genetic resources of main forest tree species from Romanian Carpathians

75%

Farcas C.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

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2007

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tom 92

7

Logistics of delivery of cones of selected species of forest trees. Part 2: Cone transport

63%

Aniszewska M. , Gendek A.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2016

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nr 68

8

Conservation of genetic resources of Sorbus torminalis in Poland

63%

Bednorz L.

Dendrobiology

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2007

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tom 58

3-7

EN

The paper presents the proposal of a strategy of conservation of genetic resources of wild service tree (Sorbus torminalis) in Polish forests. Some results of the recent studies on distribution, resources and genetic variability of wild service tree in Poland that make a scientific base of the programme are presented. Both in situ and ex situ methods should be applied in conservation of genetic resources of S. torminalis. Conservation affords should first to be focused on forest management oriented in favor of wild service tree (e.g. logging intervention, competition control, preparing of favorable sites for new establishments). Further, in situ measures should include selection of conservation areas (natural gene reserves) and preserving trees of the best quality (protected genotypes). These objects would provide seeds for new establishments and to feed populations of small size. The genotypes of the selected earlier preserving trees (about 250–300) would be protected in ex situ conservation objects – seedling and clonal seed orchards. These plantations would also provide seeds needed for future establishments. The genotypes of endangered populations or single trees of S. torminalis could be preserved in the Forest Gene Bank in Kostrzyca.

9

Species conversion of spruce stands in the Wisła Forest District

63%

Skrzyszewski J. , Skrzyszewska K.

Dendrobiology

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2004

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tom 51 Supplement

EN

The paper provides some guidelines on the choice of the target species compositions for plantations that would replace monocultural spruce stands growing on the sites of the Silesian Beskid Mts. Part of the guidelines relates to the rules governing the sequence in which the monocultures will be converted into mixed stands. It is suggested that those rules should be combined with the principles of the establishment of progenyplantations. The seed stands of the Istebna spruce are experimentally divided into four categories according to their abilityto perform the function of a seed stand. The following features of the stands are analysed: vitality, density, stage of regeneration, protective and cultural functions. The paper contains also an outline of the methods of species conversion and the relevant references.

10

Wood radial cyclic heterogeneity of Norway spruce (Picea abies (L.) Karst.) derived from ripening stands

63%

Giefing D. F. , Pazdrowski W. , Splawa-Neyman S. , Jelonek T. , Tomczak A.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2005

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tom 08

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nr 4

11

Sowing Scots pine seed with a modified single-seed seeder under controlled conditions

63%

Walczyk J. , Tylek P.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2004

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tom 07

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nr 2

12

A taper model for Norway spruce (Picea abies (L.) Karst.)

63%

Socha J.

Electronic Journal of Polish Agricultural Universities. Series: Forestry

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2002

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tom 05

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nr 2

13

Use of forest canopy by European red squirrels Sciurus vulgaris in Northern Greece: claws and the small branch niche

63%

Samaras A. , Youlatos D.

Acta Theriologica

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2010

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tom 55

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nr 4

EN

Moving and standing in trees impose multiple problems to arboreal mammals. Among them, the major ones are the negotiation of slender terminal branches and of large vertical supports. Both microhabitats are important as they have been linked alternatively to the evolutionary loss of claws in early primates. Therefore, rates of use of these different supports by claw-bearing arboreal mammals may offer insights to their actual significance in the adaptive evolution of early primates. In this context, canopy, tree crown, branch size, inclination, and texture use were recorded on four adult free ranging European red squirrelsSciurus vulgaris Linnaeus, 1758 in a mixed coniferous forest in northern Greece.S. vulgaris was mainly arboreal, exploiting the terminal branch zone, using frequently oblique and intermediately textured supports<5 cm and moderately large vertical branches. Furthermore, comparative data from other sciurid species and clawed primates showed positive correlations of small and horizontal support use, and negative ones of vertical support use to body mass. These findings show that keeled functional claws do not impede habitual use of slender branches and may not facilitate efficient climbing on large vertical trunks. These observations partly question the association between habitual use of the small branch niche and primate adaptations and lend support to alternative hypotheses, underscoring the importance of inquiring for more complex mechanisms that lead to the evolution of the unique set of primate morphological adaptations.

14

Variation in growth and survival among European provenances of Pinus sylvestris in a 30-year-old experiment

63%

Barzdajn W. , Kowalkowski W. , Chmura D. J.

Dendrobiology

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2016

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tom 75

EN

Provenance trials with forest trees provide valuable information about growth and adaptability of populations often transferred over large geographical and climatic distances. In this study we evaluated growth and survival of 19 Scots pine (Pinus sylvestris L.) populations representing most of the natural range of the species in Europe, growing in a 30-year-old provenance trial in the northeastern Poland. We used cluster analysis to investigate differentiation among those populations in growth and survival. We also used published data on needle morphology and allozyme and DNA marker variation for those same populations to compare groupings of populations based on growth and needle traits and markers. We found significant variation among tested populations in all investigated traits – the largest variation was found for stand volume which integrates information on growth and survival. Variation in growth traits was related to the latitude of population origin with populations from the latitudinal band between 49° N and 54° N showing the best performance. Populations originating from both north and south off of that region showed lower productivity, which for southern provenances resulted from their particularly low survival, reflecting the lack of adaptation to the environment of the research site. Grouping of populations based on growth traits revealed three clusters corresponding to the three latitudinal regions – northern, central and southern. Needle morphological traits were not appropriate as markers of productivity. Clustering of populations based on needle morphology, and especially based on biochemical and molecular markers, did not correspond to the grouping based on growth traits.

15

Forest tree research in post genomic era. Introduction to systems biology of broadleaves

63%

Staszak A. M. , Pawlowski T. A.

Dendrobiology

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2012

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tom 68

EN

Trees are long living organisms, rarely used in molecular experiments because of large size of the genome and long time of reproduction cycle. Sequencing data from Populus trichocarpa genome allowed for the development of research on the processes associated with tree biology such as secondary wood formation, long-term perennial growth, seasonal changes, biotic interactions, evolution etc. Reference data enable the investigation of non-model trees such as Quercus or Fagus, having ecological and economic significance. During projects scientists use genomic, transcriptomic, proteomic and metabolomic approaches which contribute to better understanding of the physiological processes regulating tree biology. Data collected from these multiple studies need to be integrated. The integration of data is the subject of the newly established field of science called systems biology. This review presents progress in tree research after finishing the sequencing project of Populus. It concentrates on modern trends in 'omics' and systems biology study of temperate broadleave trees during the last 10 years of studies.

16

Autovegetative reproduction in conservation and selective cultivation of Norway spruce Picea abies (L.) Karst of Istebna race

63%

Rylski K.

Dendrobiology

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2004

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tom 51 Supplement

EN

The paper discusses the results of rooting experiments conducted with the cuttings obtained from 8-year-old spruce trees of Istebna race. The studies investigated the effects of endogenous factors, such as the place of extraction, length and origin of cuttings, and an exogenous factor, which is a rooting stimulus.

17

Macromycetes of oak forests in the Jurassic Landscape Park [Czestochowa Upland] - monitoring studies

63%

Lawrynowicz M.

Acta Mycologica

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2001

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tom 36

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nr 1

18

Changes in the DBH structure of Norway spruce [Picea abies [L.] Karst.] in the experimental trial of IUFRO 1972 series in Siemianice Experimental Forest District

63%

Barzdajn W. , Kowalkowski W.

Forestry

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2001

|

tom 04

19

The variability of dimensions of Quercus robur L. and Quercus petraea (Matt.) Liebl. acorns in Poland

63%

Barzdajn W.

Dendrobiology

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2002

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tom 47 Supplement

EN

The paper includes results of measurements of the length and diameter of 12600 acorns of Quercus robur and 5099 acorns of Q. petraea collected in Poland in the mast-year 1993. Acorns of both species were compared. Significant differences in acorn length and diameter/length ratio were found. Acorns of Q. robur are somewhat larger, but both species have a large common area of variability. The scale of this variability has been determined. Geographical correlation of the size of Q. robur acorns was ascertained.

20

Tree crowns condition of the main scots pine [Pinus sylvestris L.] tree stand in some selected forest division in 2003

63%

Jaszczak R. , Golojuch P.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2004

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tom 03

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nr 2