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    Tytuł:
    Wpływ warunków świetlnych panujących pod okapem drzewostanu na wielkość osobnika jeżyny gruczołowatej (Rubus hirtus Waldst. i Kit. agg.)
    Effect of light conditions under the stand canopy on the size of blackberry (Rubus hirtus Waldst. and Kit. agg.) individuals
    Autorzy:
    Gazda, A.
    Janas, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/973866.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany
    dno lasu
    warunki swietlne
    Rubus hirtus
    leśnictwo
    krzewy leśne
    jerzyna gruczołowata
    wzrost roślin
    wielkość
    light conditions
    specimen size
    blackberry
    rubus hirtus
    Opis:
    The objective of the study was to determine the effect of the forest floor light conditions on the size of blackberries. The research was conducted in the Forest Experimental Station (LZD) in Krynica (49°26'N, 20°52'E). In autumn 1999, 30 individuals were collected from two selected blackberry patches. The crown closure over the blackberry patch situated in the stand with a broken canopy accounted for 21%, while that over the patch located in the stand with the full canopy cover – 3%. The average weight of individuals from the patch beneath the dense canopy was 1.937 ±1.364 g, while individuals growing under a more open canopy were ten times greater and amounted to 18.027 ±11.993 g. The average length of shoots of individuals growing under the dense canopy was five times larger and equalled 42.4 ±35.2 cm and 278.7 ±186.7 cm, respectively. Blackberries growing under a more open canopy established every second shoot (47%) with a length exceeding 50 cm potentially capable of producing roots and thereby progeny ramets. Only one in ten shoots (13%) in individuals growing under the dense canopy was longer than 50 cm. Individuals growing under a more open canopy were several times larger, which means that the blackberry positively responded to the increased access to light by increasing the size of individuals. However, a large share of live shoot lengths in the total length of an individual from the patch under a more open stand canopy compared to the share of this parameter in the total length of an individual growing under the dense canopy suggests that under favourable conditions the expansion of this species is highly probable.
    Źródło:
    Sylwan; 2011, 155, 06; 393-400
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ drzewostanu na strukturę wielkości jeżyny gruczołowatej (Rubus hirtus Waldst. & Kit. agg.) na obszarze dawnego rezerwatu "Dolina Łopusznej" w Gorczańskim Parku Narodowym
    Effect of forest stands on the size structure of the blackberry (Rubus hirtus Waldst. & Kitt. agg.) in the former "Dolina Lopusznej" Reserve in the Gorce National Park
    Autorzy:
    Gazda, A.
    Szywacz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008898.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    runo lesne
    krzewy
    jezyna gruczolowata
    Rubus hirtus
    pedy
    struktura wielkosci
    czynniki siedliska
    struktura drzewostanu
    Gorczanski Park Narodowy
    rubus hirtus
    size structure
    gorce national park
    poland
    Opis:
    The studies were conducted in the Gorce National Park (49°32'N, 20°07'E). The fieldwork was carried out on 34 permanent research plots. It was demonstrated in the studies that stands had significant positive and negative effects on the Rubus hirtus population. With the increase in the total and mean basal areas, the number and length of shoots, percentage of area coverage and annual length increment of Rubus hirtus individuals also increased. There was also a significant dependence of the number of shoots and individuals of Rubus hirtus on the basal area of beech. No significant relationship was found between Rubus hirtus plants and basal areas of spruce and fir trees. Stand age was another important factor. A positive correlation was found between the stand age and length of shoots and the percentage of area covered by blackberries. The number of trees on sample plots is also associated with age. A negative correlation was found between the parameters of Rubus hirtus plants (the number and length of shoots per 5 m2 and the degree of coverage) and the number of trees on sample plots. As there was previously no significant break in the canopy of the natural forest growing in the 'Dolina Łopusznej' reserve, no significant dominance of Rubus hirtus in the forest floor was noted. Blackberries usually established short main shoots (up to 25 cm) which were not potentially capable of producing roots, and thereby progeny ramets. As a result, the area occupied by blackberries usually did not exceed 15−30%.
    Źródło:
    Sylwan; 2011, 155, 07; 500-506
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie struktury wielkości jeżyny gruczołowatej (Rubus hirtus Waldst. & Kitt. agg.) z populacji rosnących na glebach wykształconych na różnych podłożach geologicznych
    Comparison of the size structure of the blackberry [Rubus hirtus Waldst. and Kitt. agg.] from the populations growing on the soils developed on different geological substrates
    Autorzy:
    Gazda, A.
    Kochmańska-Bednarz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009443.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    botanika lesna
    krzewy
    populacje roslin
    jezyna gruczolowata
    Rubus hirtus
    pedy
    struktura wielkosci
    struktura przestrzenna
    czynniki siedliska
    podloze geologiczne
    population structure
    size structure
    rubus hirtus
    bedrock type
    soil type
    Opis:
    The objective of the paper was to determine the size structure of the canes and individuals of Rubus hirtus populations and compare them with regard to the type of soils developed on different geological substrates (granodiorite partially covered by boulders, weathered rocks, river sediments, loams and rock rubble for podzolic soil; limestone and conglomerate interlayers for humus−rich and brown rendzinas and on Carpathian flysh for acid brown soil). The mean Rubus hirtus density on all study sites significantly differed from each other. The highest ramet density (11 individuals/m2 ) was noted on the "Dolina Łopusznej" site, while individuals from the populations on the remaining study sites occurred locally in smaller or larger clusters. The shoots of Rubus hirtus growing on podzolic soils significantly differed from those growing on acid brown soil. Long shoots (over 50 cm) on all sites constituted only a few per cent. The Rubus hirtus populations on the "Szczoty" and "Dolina Łopusznej" sites established over 50 cm high shoots, potentially capable of producing roots with the probability of 0.14. Individuals producing a single the main primocane with the probability of over 0.7 were the most frequent. Less than 10% of the individuals which in the previous year produced at least one main shoot failed to establish new main shoots at all. The number of flowering/ fruiting individuals did not exceed 20% on none of the study sites. The studied populations produced a few new ramets. The results obtained from the research permit suggesting that the underlying bedrock is the primary, while light is the secondary, factor affecting the presence of Rubus hirtus plants. This species colonises areas where the stand canopy is broken even to a slight degree.
    Źródło:
    Sylwan; 2010, 154, 05; 347-355
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Występowanie jeżyn (Rubus L.) w młodych uprawach leśnych na Płaskowyżu Kolbuszowskim
    The occurrence of brambles (Rubus L.) in young forest plantations on the Kolbuszowa Plateau
    Autorzy:
    Wolanin, M.M.
    Wolanin, M.N.
    Oklejewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292603.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Plaskowyz Kolbuszowski
    uprawy lesne
    krzewy
    jezyna
    Rubus
    jezyna gruczolowata
    Rubus hirtus
    jezyna sloneczna
    Rubus apricus
    jezyna Bellardiego
    Rubus pedemontanus
    jezyna faldowana
    Rubus plicatus
    jezyna ostrega
    Rubus gracilis
    jezyna wyniosla
    Rubus ambrosius
    jezyna gliwicka
    Rubus glivicensis
    jezyna bukietowa
    Rubus grabowskii
    malina
    Rubus idaeus
    jezyna wzniesiona
    Rubus nessensis
    jezyna orzesiona
    Rubus camptostachys
    wystepowanie
    genus Rubus
    forests
    south-eastern Poland
    Opis:
    In the Kolbuszowa Plateau forest areas, aggregations of brambles were observed most often in young forest plantations and forest clear cuts. In the 20 plantations that we examined, 11 bramble species were found. The most common bramble species in young forest plantations were Rubus plicatus, R. nessensis, R. hirtus, R. idaeus and more rarely R. gracilis, R. ambrosius and R. apricus. The largest bramble aggregations occurred in plantations located in mixed pine-oak forests, subcontinental lime-oakhornbeam forests and drained black alder forests. In young forest plantations the Rubus species were accompanied by species characteristic for the Vaccinio-Piceetea, Querco-Fagetea, Epilobietea angustifolii, Molinio-Arrhenatheretea and Nardo-Callunetea associations. There are three groups of bramble species which occur in young forest plantations: I – species with thin, prostrate and rooting stems (R. hirtus, R. apricus, R. pedemontanus), the negative impact of which on tree seedlings could have been very significant if the bramble specimens or diaspores had been present at the moment of tree planting; II – species with strong, poorly branched and arched stems (R. plicatus, R. gracilis, R. ambrosius, R. glivicensis), which negative influence on tree seedlings depends on the capability of the species to produce a big, dense bush in a short period of time thereby increasing shade; III – species with erect and relatively sparsely growing stems (R. idaeus), which are not a threat for the young forest plantations. Species with intermediate features (e.g. R. nessensis) may have a negative impact on young plantations generating a large, dense aggregation, however in most cases their populations only grow sparsely and do not hinder the growth of tree seedlings.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 2
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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