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    Wyświetlanie 1-7 z 7
    Tytuł:
    Tree species diversity and above-ground biomass of natural temperate forest: montane versus lowland forest
    Autorzy:
    Gazda, A.
    Miscicki, S.
    Chwistek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/41218.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    tree
    plant species
    species diversity
    aboveground biomass
    temperate forest
    mountain forest
    lowland forest
    species richness
    Opis:
    We studied the relationship between tree-species diversity and the above-ground biomass on an example of two natural Polish forest with different altitiudinal range, plant species pool, vegetation and climatic conditions. The study sought to determine whether: (1) above-ground biomass in natural forests correlates with tree-species diversity irrespective of the kind of forest (montane or lowland), and (2) the relationship in question is negative, (3) the above-ground biomass is greater in montane forests than in lowland ones. Natural forests present in 1º Polish Gorce Mountains (montane forest) alongside comparable data for the 2º world-renowned lowland forest that is present in the Białowieża National Park. Data were collected within 558 sample plots (á 200-square-metre). The diameter at breast height of all trees with girths of or exceeding 12 cm was measured. To compute above-ground biomass we calculated dry masses for each tree on the basis of values for dbh and height, next we summed these values for all species present within each plot. The number of tree species on a plot ranged from only one (mainly in spruce stands) to six (in mixed deciduous lowland forest stands). The above-ground accumulated biomass ranged from 6 to 1155 (average 251±13) t ha–1 within the lowland forest, and from 2 to 849 (average 242±8) t ha–1 within the montane forest. We concluded that there was a humped-back shaped relationship between tree-species diversity and above-ground biomass in both lowland and montane natural forests.
    Źródło:
    Dendrobiology; 2015, 73
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Similarity between seed bank and herb layer in a natural deciduous temperate lowland forest
    Autorzy:
    Wodkiewicz, M
    Kwiatkowska-Falinska, A.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/56649.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    similarity
    seed bank
    herb layer
    lowland forest
    Bialowieza Forest
    primeval forest
    oak-hornbeam forest
    seed extracting
    soil seed bank
    species dominance
    species similarity
    Opis:
    Forest seed banks mostly studied in managed forests proved to be small, species poor and not reflecting aboveground species composition. Yet studies conducted in undisturbed communities indicate a different seed bank characteristic. Therefore we aimed at describing soil seed bank in an undisturbed forest in a remnant of European lowland temperate forests, the Białowieża Forest. We compared similarity between the herb layer and seed bank, similarity of seed bank between different patches, and dominance structure of species in the herb layer and in the seed bank of two related oak-hornbeam communities. We report relatively high values of Sorensen species similarity index between herb layer and seed bank of both patches. This suggests higher species similarity of the herb layer and soil seed bank in natural, unmanaged forests represented by both plots than in fragmented communities influenced by man. Although there was a set of core seed bank species present at both plots, yielding high Sorensen species similarity index values, considerable differences between plots in seed bank size and dominance structure of species were found, indicating spatial variability of studied seed bank generated by edaphic conditions. Dominance structure of species in the herb layer was not reflected in the underlying seed bank. This stresses, that natural forest regeneration cannot rely only on the seed bank, although some forest species are capable of forming soil seed banks. While forest seed banks may not reflect vegetation composition of past successional stages, they may inform on history and land use of a specific plot.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2010, 79, 2; 157-166
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of variability of water resources in lowland forests on selected parameters describing the condition of trees
    Autorzy:
    Tyszka, J.
    Stolarek, A.
    Fronczak, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/11996.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    variability
    water resource
    lowland forest
    climatic function
    hydrological function
    selected parameter
    tree condition
    periodical change
    stand condition
    extreme climate
    water condition
    river list
    habitat condition
    tree stand
    Opis:
    The influence of water conditions on the condition and growth of tree stands has been analysed in the context of the climatic and hydrological functions forest plays. Long observational series obtained for precipitation, outflow and depths below the surface of the water table have been put together with measured increases in the breast-height diameters of Scots pines and the severity of crown defoliation observable in selected tree species growing on the Polish Lowland, in order to determine the overall scope to the reaction stand condition manifests in the face of ongoing variability of water conditions within forest. An overall improvement in the condition of stands over the last 20 years does not disguise several-year cyclicity to changes capable of shaping the situation, i.a. departures from long-term mean values for precipitation totals and groundwater levels. The condition of stands is seen to worsen in both dry and wet years. Analysis of the degree to which pine, spruce and broadleaved stands experience defoliation points to spruce stands responding most to extreme hydro-climatic conditions. Extreme situations as regards water resources were seen to involve a response over two-year time intervals in the case of coniferous stands. Unsurprisingly, optimal growing-season (June-September) precipitation totals correspond with long-term average figures, while being slightly higher for spruce (at 384 mm), than for Scots pine or broadleaved species (375 mm). The relationships reported gain confirmation in analysis of periodic change in breast-height diameter increments characterising Scots pines, whose growth is seen to depend closely, not only on precipitation, but also above all on the depth of the water table in the summer half-year. Optimal depths of the water table proved to be different, being around 20 cm below ground in the case of marshy coniferous forest, 80 cm in wet habitats, and 135 cm in fresh habitats. Depending on the possibilities for water to soak into the rooting zone of trees there were even twofold differences in measured growth increments in Scots pine (as the dominant species in Poland’s lowland habitats). The maintenance of stable water conditions (as the most variable environmental factor in forest) should be an overriding aim of management activity in this habitat. When account is taken of the influence of the state of water resources on biomass production, and then on the intensity of evapotranspiration and the absorption of carbon dioxide from the atmosphere, it is seen how important it is to achieve improvements in water conditions in forests, as such an important factor in combating climate change.
    Źródło:
    Papers on Global Change; 2014, 21
    2300-8121
    1730-802X
    Pojawia się w:
    Papers on Global Change
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distribution of nickel fractions in forest Luvisols in the south Podlasie Lowland
    Rozmieszczenie frakcji niklu w lesnych glebach plowych na Nizinie Poludniowopodlaskiej
    Autorzy:
    Pakula, K
    Kalembasa, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/14930.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    Luvisol
    forest Luvisol
    Podlasie Lowland
    Polska
    nickel fraction
    distribution
    sequential extraction
    Opis:
    Sequential extraction methods enable identification of chemical fractions of heavy metals in soil environment as well as evaluation of their availability and potential toxicity to biotic elements of a trophic chain. The study aimed at separating nickel fractions from particular genetic horizons of forest Luvisols by means of three sequential extraction methods (modified Tessier’s, Zeien and Brümmer’s as well as Hedley’s with Tiessen and Moir’s modifications methods), and to compare the metal content in four fractions: easily soluble, exchangeable, organic, and residual, along with their distribution within studied soils’ profiles. Nickel concentrations in the examined fractions varied: the largest amounts of the heavy metal (regardless of the analytical procedure applied) were found in residual fraction Fresid (mineral horizons) and organic fraction Forg (forest litter horizons – Ol), while the smallest ones occurred in easily soluble fraction F1 (all genetic horizons). Statistical processing revealed significant dependences between the four nickel fractions as well as between the fractions and selected properties of analyzed soils (except soil pH and total nickel content Nit).
    Metody ekstrakcji sekwencyjnej umożliwiają identyfikację frakcji chemicznych metali ciężkich w środowisku glebowym, a także ocenę ich dostępności i potencjalnej toksyczności dla biotycznych elementów łańcucha troficznego. Celem pracy było wydzielenie frakcji niklu w poszczególnych poziomach genetycznych leśnych gleb płowych trzema metodami ekstrakcji sekwencyjnej (zmodyfikowanej metody Tessiera, metody Zeiena i Brümmera oraz metody Hedleya w modyfikacji Tiessena i Moira), a także porównanie zawartości tego metalu w czterech frakcjach: łatwo rozpuszczalnej, wymiennej, organicznej i rezydualnej oraz ocena ich rozmieszczenia w profilu badanych gleb. Zawartość niklu w badanych frakcjach była zróżnicowana. Najwięcej tego metalu, niezależnie od zastosowanej procedury analitycznej, stwierdzono we frakcji rezydualnej – Fresid (poziomy mineralne) oraz organicznej – Forg (poziomy ściółki leśnej – Ol), a najmniej we frakcji łatwo rozpuszczalnej – F1 (wszystkie poziomy genetyczne). Obliczenia statystyczne wykazały, że badane cztery frakcje niklu były wysoko istotnie zależne między sobą oraz wybranymi właściwościami analizowanych gleb (z wyjątkiem pH gleby i zawartości ogólnej Nit).
    Źródło:
    Journal of Elementology; 2009, 14, 3; 517-525
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka geobotaniczna rzeki Pichna Szadkowicka na odcinku od źródła w Zimnej Wodzie do ujścia z terenu Uroczyska Wojsławice
    Geobotanical characteristic of the Pichna Szadkowicka river section from river’s headwater area in the Zimna Woda village to its outlet from the Wojsławice forest complex
    Autorzy:
    Woziwoda, Beata
    Szczerkowska-Majchrzak, Eliza
    Powiązania:
    https://bibliotekanauki.pl/articles/510390.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    lowland river
    vascular plants
    riparian forest
    wet oak-lime-hornbeam forest
    rzeka nizinna
    rośliny naczyniowe
    las łęgowy
    Opis:
    The paper presents the river valley physiography and the selected hydraulic, physics and chemical parameters of the upper section of small lowland river – Pichna Szadkowicka (the Warta river catchment, Central Poland). The strong relationship between the river and river valley habitat’s characteristics and the plant species and vegetation diversity was noted. Around one hundred (93) of vascular plant species was noted in total, including Listera ovata (strictly protected) and partially protected: Hedera helix, Viburnum opulus, Frangula alnus and Hepatica nobilis. The high natural (botanical) and landscape values of the researched section of the Pichna Szadkowicka river with adjacent parts of Wojsławice forest complex justify additionally their protection in the network of forests reference plots and of the High Conservation Value Forests (HCFV).
    Źródło:
    Biuletyn Szadkowski; 2014, 14; 179-188
    1643-0700
    Pojawia się w:
    Biuletyn Szadkowski
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The lichen biota of Pinus sylvestris under the impact of some stand-related factors: a case study from the South-Eastern part of Zerków-Czeszewo Landscape Park (Wielkopolska-Kujawy Lowland)
    Autorzy:
    Zarabska-Bożejewicz, Daria
    Kujawa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/11543413.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    lichenized fungi
    species richness
    pine
    Pinus sylvestris
    coniferous forest
    Zerkow-Czeszewo Landscape Park
    Wielkopolska-Kujawy Lowland
    Opis:
    A lichenological inventory was conducted in the pine stands in the south-eastern region of Żerków-Czeszewo Landscape Park. The aim of this study was to recognize the lichen species diversity on the bark of Pinus sylvestris by considering tree age and forest habitat type. In total, 26 species of lichenized fungi were found on the bark of P. sylvestris. The biota comprises common and widespread species in Poland. Tree age positively and significantly influenced the species richness on the bark of P. sylvestris. The suitability of the pine tree age for lichens evident as alpha diversity seemed to be independent from the habitat of the trees. The age of phorophytes strongly affected the presence of Hypocenomyce scalaris. Mixed fresh coniferous forests were characterized by higher beta- and gamma diversity compared to fresh coniferous forests. There was no correlation between the number of species per tree (alpha diversity) and diversification of species composition in relation to the distance between pines. The findings indicate that maintenance of a variety of phorophytes and age-diversified tree stands can prevent impoverishment of the lichen biota in the south-eastern part of Żerków-Czeszewo Landscape Park.
    Źródło:
    Acta Mycologica; 2021, 56, 1; 562
    0001-625X
    2353-074X
    Pojawia się w:
    Acta Mycologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pełnik europejski Trollius europaeus L. w zbiorowiskach leśnych i okrajkowych północnej części Niziny Południowopodlaskiej
    Globe flower Trollius europaeus L. in forest and forest edge communities in the northern part of the Poludniowopodlaska Lowland
    Autorzy:
    Ciosek, M.T.
    Krechowski, J.
    Piórek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318569.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    fitosocjologia
    zbiorowiska lesne
    zbiorowiska okrajkowe
    gatunki chronione
    pelnik europejski
    Trollius europaeus
    wystepowanie
    stanowiska
    Nizina Poludniowopodlaska
    forest communities
    forest edge communities
    Po³udniowopodlaska Lowland
    Opis:
    The distribution of Trollius europaeus in the northern part of the Południowopodlaska Lowland was described and a phytosociological study made of the localities where it was present between 2010 and 2012. The condition of all sites where T. europaeus was historically present was also verified. These field studies reveal that the number of sites of occurrence and the abundance of T. europaeus populations have rapidly diminished over recent years. Only 15 populations of the species in the vicinity of 7 sites were confirmed. Trollius europaeus is usually considered a species characteristic of moist meadows of ordo Molinietalia and in the plant community type, Polygono bistortae-Trollietum. In the northern part of the Po³udniowopodlaska Lowland, no meadow sites containing Trollius europaeus still remain according to our survey. All the confirmed stands are situated in deciduous forests of class Querco-Fagetea (Tilio-Carpinetum and Potentillo albae-Quercetum) and moist forest edge communities of ordo Glechometalia. The disappearance of all meadow populations is mainly considered a result of intensification of the agricultural use of these habitats. We suggest that the category of threat to Trollius europaeus is increased on the regional list from VU to EN, and consolidated with further monitoring and active protection of stands where it is present.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 3; 233-243
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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