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    Wyświetlanie 1-7 z 7
    Tytuł:
    Przerzedzenie koron a opór elektryczny i wilgotność względna tkanek przykambialnych sosny i świerka w Puszczy Augustowskiej
    Thinned crowns and electrical resistance and relative moisture of tissues adjacent to cambium in pine and spruce in the Augustow Forest
    Autorzy:
    Lozinska, A.
    Lozinski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/813602.pdf
    Data publikacji:
    1991
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Augustowska
    lasy
    monitoring
    drzewa lesne
    sosna
    swierk
    przerzedzenie korony
    tkanki przykambialne
    wilgotnosc wzgledna
    opor elektryczny
    Źródło:
    Sylwan; 1991, 135, 08
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany rozmieszczenia i liczebnosci gluszca Tetrao urogallus L. w Puszczy Augustowskiej oraz propozycje aktywnej ochrony
    Autorzy:
    Zawadzki, J.
    Sudnik, W.
    Zawadzka, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/820035.pdf
    Data publikacji:
    1999
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    ptaki
    wystepowanie
    fauna
    ochrona gatunkowa
    smiertelnosc
    Tetrao urogallus
    lesnictwo
    ochrona zwierzat
    rozrod zwierzat
    gluszec
    Puszcza Augustowska
    liczebnosc
    Źródło:
    Sylwan; 1999, 143, 11; 69-78
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka drzew gniazdowych dzięcioła czarnego w Puszczy Augustowskiej
    Characteristics of the nesting trees of the Black Woodpecker in the Augustow Forest
    Autorzy:
    Zawadzka, D.
    Zawadzki, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/989060.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Augustowska
    lasy
    fauna
    ptaki
    dzieciol czarny
    Dryocopus martius
    gniazdowanie
    drzewa gniazdowe
    dryocopus martius
    cavities
    nesting trees
    pinus sylvestris
    Opis:
    The Black Woodpecker Dryocopus martius excavates nesting holes in big trees and use dead wood for foraging. It is considered as a key and an indicator species in the protection of biodiversity of forest ecosystems, because its cavities condition the possibility of breeding the biggest secondary cavity−nesters, bats, and some species of wasps. We studied preferences of the Black Woodpecker towards the nesting trees in the Augustów Forest (NE Poland). It is an extensive forest complex covering 114 000 ha, dominated by fresh and mixed fresh coniferous forest sites. Scots pine Pinus sylvestris occupies 78% of forest area. Stands older than 100 years cover about 18% of the study area. We searched for trees with cavities of the Black Woodpecker in stands older than 60 years. We identified tree species, their age and health condition. The breast height diameter and height of trees and height of the cavities above ground were measured. Additionally, cavity entrance orientation were estimated. We found a total number of 150 nesting trees with 229 cavities excavated by the Black Woodpecker. Pines constituted 95% of nesting trees. Cavities were found also in Betula pendula and Populus tremula. Live trees predominated among trees with cavities. Dead trees (only pines) constituted 12% of all. More than one (form 2 to 6) cavity entrances were recorded in almost 30% of nesting trees. Woodpeckers excavated cavities in pines in age from 92 to 222, 159 years old on average. Taken together, 90% of cavity pines were older than 110 years. The height of nesting trees varied from 21 to 37.5 m (30.5 m on average), and its breast height diameter was 32−96 cm with mean of 54 cm. Over 90% of trees with woodpeckers' cavities had dbh larger than 40 cm, and almost 50% between 50 and 60 cm. The mean height of cavity entrances was 12.8 (6−27) m. There was no dependence between the height of cavities and the thickness of trees. The entrance orientation was dominated by east and north (together 58%). Birds selected the least often an entrance in southwest (only 2.3%). The Augustów Forest is the only study plot in Europe, where so strong domination of pines among nesting trees of the Black Woodpecker was recorded. The preferred tree species in south and west part of the continent is Fagus sylvatica. The Black Woodpecker uses for nests mainly the oldest pines, but it is related to the thickness, and not directly to the age of these trees. The maintenance of pine dominated stands older than 120 years is necessary for the Black Woodpecker protection in the Augustów Forest.
    Źródło:
    Sylwan; 2017, 161, 12; 1002-1009
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Występowanie rysia eurazjatyckiego (Lynx lynx) w Puszczy Augustowskiej
    Occurrence of Eurasian lynx (Lynx lynx) in Augustow Forest
    Autorzy:
    Harmuszkiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008886.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Augustowska
    fauna
    wystepowanie
    rys
    Lynx lynx
    populacje zwierzat
    liczebnosc populacji
    zmiany liczebnosci
    rozmieszczenie przestrzenne
    struktura wiekowa
    eurasian lynx
    lynx lynx
    augustowska forest
    population size
    Opis:
    Snow tracking of the Eurasian lynx was conducted in the Augustowska Forest during 2008/2009 winter. The tracking results and year−long monitoring of the predators showed the presence of 19 to 20 lynx individuals in the territory of the Augustowska Forest. Significant differences were found in the size of the territories occupied by adult males and adult females. Areas occupied by females carrying kittens were separated from each other, but partially overlapped with areas of male cats. The density of predators was low (1.67−1.75 individuals/100 km²), which may be because of the simplified structure of the forest environment and low density of ungulate mammals constituting the basic food of the lynx.
    Źródło:
    Sylwan; 2011, 155, 08; 572-578
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wybór drzew gniazdowych przez myszołowa, jastrzębia i kruka w Puszczy Augustowskiej
    Choosing the trees for nesting by the Buzzard, Goshawk and Raven in the Augustow Forest
    Autorzy:
    Zawadzki, G.
    Zawadzka, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/987067.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lasy
    ornitologia
    ptaki drapiezne
    jastrzab
    Accipiter gentilis
    myszolow
    Buteo buteo
    kruk
    Corvus corax
    drzewa gniazdowe
    lokalizacja
    preferencje siedliskowe
    Puszcza Augustowska
    accipiter gentilis
    buteo buteo
    corvus corax
    nesting trees preference
    Opis:
    Preferences of the Buzzard, Goshawk and Raven in choosing the trees for nesting were studied in northern part of the Augustów Forest (NE Poland) in 2014−2016 years. Study area is dominated by fresh and mixed fresh sites with Scots pine as a dominant species (86% of the forest area). Nests were searched in stands older than 60 years. We found 60 nests of Buzzard, 11 of Goshawk, and 31 of Raven. The diameter and the height of nest trees, the height of nest location, and length of tree crowns were measured. Diameter and height of surrounding trees were also determined. In total, 11 features of nest trees were assessed. For the location their nests, all analysed bird species preferred trees bigger and higher than neighbouring ones. The oldest stands (above 100 years old) were also preferred. The Raven built nests on trees average 139 years old, Goshawk – 119, while Buzzard – 109. Raven nested only on Scots pine, Goshawk on Norway spruce and Scots pine, while Buzzard on silver birch, Scots pine, European larch and Norway spruce. The Buzzard selected for nest trees growing in average distance about 1500 m from forest edge, while Goshawk and Raven preferred nest in a similar distance from the forest edge (707−783 m). Distance of the nests from forest road were similar for Buzzard and Goshawk – about 60 m, and in case Raven it was only 38 m. Raven chose for nesting old−growth islands located on forest edge, or even single old tree growing on plantation. The greatest plasticity in the nest location and habitat diversity was found for Buzzard. Both Goshawk and Raven had more precisely marked habitat and nest preferences.
    Źródło:
    Sylwan; 2017, 161, 08; 669-676
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ warunków siedliskowych na strukturę i zasobność drzewostanów świerkowo-sosnowych w Puszczy Augustowskiej
    Impact of site conditions on the structure and volume of spruce-pine stands in the Augustowska Primeval Forest
    Autorzy:
    Andrzejczyk, T.
    Drozdowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016334.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    warunki siedliskowe
    hodowla lasu
    lesnictwo
    struktura drzewostanu
    drzewostany swierkowo-sosnowe
    zasobnosc drzewostanu
    Puszcza Augustowska
    norway spruce
    picea abies
    spruce−pine stands
    sub−boreal stands
    age structure
    multi−storeyed structure
    site
    Opis:
    The role of spruce in shaping the structure and volume of pine stands in the Augustowska Primeval Forest (north−eastern Poland) increases with the increase of site fertility. On poor coniferous forest sites, spruce occurs mainly in an understorey and sporadically as an admixture species, whereas on medium−fertile and fertile sites it builds the second storey and occurs in the upper storey accounting for about 30−40% of stand volume. In mature pine stands of the Augustowska Primeval Forest, spruce comes from natural regeneration. Taking into consideration the course of the regeneration process, four types of spruce age structure are distinguished.
    Źródło:
    Sylwan; 2007, 151, 01; 30-40
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wieloletnie zmiany składu gatunkowego drzewostanów o podwyższonym reżimie ochronnym w Puszczy Augustowskiej i Puszczy Knyszyńskiej
    Long-term changes of tree species composition in high protective regime stands in the Augustow and Knyszyn Forests
    Autorzy:
    Paluch, R.
    Gabrysiak, K.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/979555.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Augustowska
    Puszcza Knyszynska
    rezerwaty przyrody
    drzewostany naturalne
    zbiorowiska lesne
    sklad gatunkowy
    bor brusznicowy
    bor mieszany trzcinnikowo-swierkowy
    grad miodownikowo-grabowy
    odnowienia naturalne
    zmiany skladu gatunkowego
    zmiany struktury drzewostanu
    natural regeneration
    forest reserve
    natural stand
    hornbeam expansion
    Opis:
    In the last decades, we observed significant changes in the tree species composition in all layers of close−to−natural stands. Since the 1970s, the Forest Research Institute has collected and stored dataset from stand measurements, phytosociological and other research that are the basis for the long−term monitoring of vegetation. The aim of the research was to determine the directions of changes in the species composition and structure of tree stands, and to analyze the changes in the species composition of natural regeneration growing without human interference in various forest communities in the period of about 40 years. From 2014 to 2017, 40 permanent plots of 0.25 ha were re−measured in the nature reserves of the Knyszyn and Augustów Forests (NE Poland). The diameter of all trees was measured and the trees of the natural regeneration and bushes up to 1.3 m high were counted. The stand similarity index (S) between successive measurements was calculated. The analysis of differences in the composition of tree stands in subsequent measurements was carried out using Student t and Kruskal−Wallis tests. In the species composition of fresh coniferous forest stands and fresh mixed coniferous forest, there were significant changes in the number and share of Scots pine and Norway spruce. In the Knyszyn Forest a significant decrease in the share of spruce was observed. However, an increase in the share of deciduous species was remarkable. An inhibition of the natural pine renewal process and increase in density of spruce regeneration was observed. It is necessary to emphasize the significant expansion of hornbeam in a fresh mixed deciduous forest in the Knyszyn Forest and expansion of hazel in the Augustów Forest. Mean basal area in the forest stands has increased. The similarity index between the beginning and the end of the research reached the value of 0.73−0.94. The species composition and density of natural regenerations created without human intervention are not satisfactory from the point of view of forest sustainability. The most important factor affecting the direction and rate of changes in the species composition of tree stands is the expansion of hornbeam and/or hazel. These species cause changes in the ecological conditions of the lowest forest layers, leading to the unification of the species composition of forest communities.
    Źródło:
    Sylwan; 2019, 163, 10; 846-854
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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