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    Wyświetlanie 1-33 z 33
    Tytuł:
    Biogrupy drzew w lesie naturalnym: czy prof. Włoczewski miał rację?
    Tree biogroups in natural forests: was prof. Włoczewski right?
    Autorzy:
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1024241.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    biogrupy
    las naturalny
    lesnictwo
    Bialowieski Park Narodowy
    rozmieszczenie przestrzenne
    drzewa lesne
    białowieża national park
    contagion index
    natural forest
    permanent plot
    spatial pattern
    tree biogroup
    Opis:
    The contagion index [Gadow i in. 1998] is used to analyse a spatial pattern of trees in a natural forest stand occurring on a permanent study plot, located in a compartment 319 of the Białowieża National Park. By means of this index it is found that at a small spatial scale, the random occurrence of trees is a dominating mode of tree spatial pattern. At the same time, the share of trees forming biogroups is estimated to ca. 25% (at average). The results are compared with similar analysis performed by means of the Donnelly index and the Ripley's K function.
    Źródło:
    Sylwan; 2004, 148, 07; 3-10
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Puszcza Białowieska jako ostoja różnorodności biologicznej
    Białowieża Forest as a biodiversity hotspot
    Autorzy:
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/989062.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    ochrona przyrody
    ochrona bioroznorodnosci
    bogactwo przyrodnicze
    rosliny naczyniowe
    walory przyrodnicze
    active management approach
    biodiversity loss
    environmental change
    forest management
    natural succession
    strict protection
    Opis:
    Białowieża Forest (BF) is widely known for its outstanding natural values. The debate about the management/protection model, able to maintain all relevant values of BF on a sustainable basis, has a very long history. Currently, the main role in this debate is played by groups and organizations claiming that the major threat for the biological richness of BF is related to local forest management. In this paper, an attempt is made to verify this thesis. The extensive literature research reveals that vascular plants are one of the most threatened (and best documented) groups of organisms occurring in BF. It was found, for example, that in case of Serratulo−Pinetum (one of the most important woodland community type occurring in BF) the floristic diversity declines at the rate 0.6 species per year. However, similar situation concerns many other groups of species (e.g. lichens) as well. The recession of many species does not take place in the managed part of the BF only. This problem concerns also the areas which, since a long time already, have been subjected to the strict protection, like the ‘Strict Reserve' of the Białowieża National Park (comprising ca. 7% of the BF, under strict protection since ca. 100 years). Several factors and agents responsible for the general deterioration of natural values of BF were identified. Among other things, many authors underline the negative impacts of natural, successional processes taking part in areas which were ‘liberated' from the direct human impacts. Such processes are a direct cause of loss among many herbaceous species, particularly helio− and termophilous plants. Another important reasons for decreasing trends in many important elements of the local biodiversity are: strong reduction of open and semi−open areas (disappearance of the so called ‘cultural landscapes'), climate change, air pollution, deer overabundance, compositional impoverishment of many tree stands, invasive species of plants and animals. In conclusion, there are many factors responsible for decreasing diversity of BF and most of them have nothing to do with the local forest management. To preserve possibly high levels of the natural values of BF for future generations, a wise and complex conservation strategy is needed. As many other similar examples from different places over the world clearly show, the core element of such a strategy should be the principle of active management approach and not the out of action principle of ‘doing nothing'.
    Źródło:
    Sylwan; 2017, 161, 12; 971-981
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ trzebieży na zróżnicowanie strukturalne drzewostanów sosnowych
    Autorzy:
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022073.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    zroznicowanie
    program BWINPro
    trzebieze
    lesnictwo
    struktura drzewostanu
    bwinpro program
    diameter differentiation
    diameter distribution
    dominance index
    scots pine
    stand
    structure
    thinning
    Opis:
    The impact of two different kinds of thinning on structural diversity of pure, even−aged Scots pine stand, is analysed. The real thinning, performed in the field, is compared with simulated computer thinning. Both thinnings make use of the same set of future (elite) trees, but differ in respect to method of marking of trees for removing. To determine the impact of thinning mode on stand structure, the overall diameter distributions, as well as some structural indices (diameter differentiation, dominance index, contagion index), before and after thinnings, are analysed and compared.
    Źródło:
    Sylwan; 2005, 149, 10; 11-19
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rola matematycznego modelowania w prognozowaniu wplywu potencjalnych zmian klimatu na ekosystemy lesne
    Autorzy:
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/814753.pdf
    Data publikacji:
    1994
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    zmiany klimatyczne
    dynamika ekosystemow
    modelowanie matematyczne
    ekosystemy lesne
    prognozowanie
    lesnictwo
    Źródło:
    Sylwan; 1994, 138, 10; 5-21
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ekologiczny model wzrostu lasu: niektóre problemy metodyczne i kalibracyjne
    Ecological growth model of the forest: some methodological and calibration problems
    Autorzy:
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/815163.pdf
    Data publikacji:
    1991
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany
    drzewa lesne
    wzrost roslin
    warunki siedliska
    warunki biocenotyczne
    czynniki ekologiczne
    modele wzrostu
    modele ekologiczne
    Źródło:
    Sylwan; 1991, 135, 09
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wskazniki zroznicowania struktury drzewostanu
    Autorzy:
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/815409.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    przestrzenne zroznicowanie piersnic
    zroznicowanie gatunkowe
    rozmieszczenie drzew w przestrzeni
    pozycja biosocjalna drzew
    lesnictwo
    stopien zmieszania drzew
    wskazniki
    struktura drzewostanu
    segregacja przestrzenna drzew
    Źródło:
    Sylwan; 2002, 146, 04; 69-79
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hodowlano-urzadzeniowa analiza drzewostanow "pocenturowskich" w Puszczy Bialowieskiej
    Autorzy:
    Borecki, T.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/813449.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany pocenturowskie
    sklad gatunkowy
    miazszosc drzewostanow
    lesnictwo
    struktura drzewostanu
    Puszcza Bialowieska
    Źródło:
    Sylwan; 2001, 145, 07; 19-29
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza wybranych zaleznosci allometrycznych dla glownych gatunkow drzew Bialowieskiego Parku Narodowego
    Autorzy:
    Bolibok, L.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/819441.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    piersnice drzew
    Bialowieski Park Narodowy
    allometria
    drzewa lesne
    Źródło:
    Sylwan; 2000, 144, 06; 73-81
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kształtowanie zróżnicowanej struktury drzewostanów z wykorzystaniem metody BDq
    Application of the BDq method in uneven-aged stands silviculture
    Autorzy:
    Brzeziecki, B.
    Kornat, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/973764.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    struktura drzewostanu
    ksztaltowanie struktury
    rozklad piersnic
    metoda BDq
    diameter distribution
    stand conversion
    stocking control
    sustainable yield
    uneven−aged
    silviculture
    BDQ method
    Opis:
    The BDq method, a tool of stocking control in uneven−aged stands, with a special reference to the problem of determining diameter structure of cuttings, is introduced. Both theoretical foundations, as well as a practical application of the BDq method are presented on the example of conversion of two−storied stands, consisting of silver fir and Scots pine, to stands characterized by a plenter−like structure.
    Źródło:
    Sylwan; 2011, 155, 09; 589-598
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rola sójki (Garrulus glandarius) w inicjowaniu przemian sukcesyjnych zbiorowisk leśnych z udziałem dębu (Quercus sp.)
    Role of jay (Garrulus glandarius) in initializing successional changes in forest communities with the participation of oak (Quercus sp.)
    Autorzy:
    Olszewski, A.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/980357.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    zbiorowiska lesne
    sukcesja roslin
    dab
    Quercus
    zoochoria
    sojka
    Garrulus glandarius
    acorn
    jay
    oak
    ornitochory
    seed dispersal
    stand heterogeneity
    tree succession
    zoochory
    Opis:
    The ability of spatial expansion and conquering of new locations, suitable for growth, is one of the most important properties enabling different plant species (including forest trees) a permanent existence in a constantly changing (in space and in time) environment. In the course of evolution, plants developed several adaptations and mechanisms enabling them to capture new localities appropriate for life. The key role in this process is played by so called propagules, i.e. differently built spores, seeds and fruits. The main sources of forces and major transportation vectors for propagules are such mechanisms as: power of gravity (barochory), wind (anemochory), water (hydrochory), animals (zoochory) and man (antropochory). Among them, in case of tree species producing large seeds, containing bulky amounts of food resources, the most important role is played by zoochory. The special variant of zoochory is ornitochory, i.e. dispersion of plant propagules by birds. One of the best known and documented examples of ornitochory is dispersal of oak acorns by jays (Garrulus glandarius). The contemporary research shows that during a vegetation period one single bird is able to deposit even several thousends of acorns within the area of 10 to 100 ha. The dispersal distance in case of acorns distributed by jays is variable and depends on several factors, first of all, climatic conditions and degree of environmental heterogeneity. On average, acorns are distributed within a distance of several hundred meters from seed trees; sometimes they are disseminated at a distance of several (4−8, maximum 20) kilometers. As a rule, only a part of deposited acorns is uncovered and consumed by birds, thus at least some of them can germinate and produce new oak seedlings. It was also recently demonstrated that jays preferably put down acorns under the stand canopies composed by tree species other than oak, for instance, under Scots pine trees. Under favourable conditions, this initiates natural successional processes and leads to a significant conversion of tree stand composition. Considering a large scale and commonness of this phenomenon, it deserves an interest and attention, not in the case of natural forests only, but in the case of managed forests as well, in which the quasi−natural, successional processes, initiated by jays, can considerably contribute to a greater compositional and structural diversity of tree stands.
    Źródło:
    Sylwan; 2019, 163, 06; 479-88
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ trzebieży przerębowej na zróżnicowanie strukturalne drzewostanu
    Autorzy:
    Bilski, M.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022233.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    dominacja wymiarowa
    rozklad piersnic
    trzebiez przerebowa
    lesnictwo
    struktura drzewostanu
    rozmieszczenie przestrzenne
    drzewa lesne
    drzewostany jodlowe
    abies alba mill.
    angle measure index
    bwinpro model
    differentiation thinning
    diameter distribution
    diameter spatial diversity
    liocourt−meyer curve
    spatial pattern
    stand structure
    Opis:
    The impact of differentiation thinning on various aspects of structure of exemplary Silver fir stand, including overall diameter distribution, diameter spatial diversity, dimension dominance and spatial distribution pattern, is analysed. Comparison of empirical diameter distribution (before and after thinning) with a the−oretical Liocourt−Meyer curve and the results of structural analysis, lead to the general conclusion that in case of relatively simple−structured Silver fir stands, achieving a desired, plenter−like structure is a longterm process, requiring a lot of consistency and patience.
    Źródło:
    Sylwan; 2005, 149, 04; 21-33
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ grabu (Carpinus betulus L.) na wzrost i przeżywalność dębu (Quercus robur L.) w fazie młodnika
    Effect of hornbeam (Carpinus betulus L.) on growth and survival of pedunculate oak (Quercus robur L.) during the thicket stage
    Autorzy:
    Andrzejczyk, T.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/985865.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewostany mieszane
    mlodniki
    drzewa lesne
    grab pospolity
    Carpinus betulus
    oddzialywanie na rosliny
    dab szypulkowy
    Quercus robur
    wzrost roslin
    przyrost wysokosci
    przyrost piersnicy
    artificial regeneration
    carpinus
    interspecific competition
    mixing form
    mixed−stand
    quercus
    silviculture
    Opis:
    Growth and mortality of oak (Quercus robur L.) in young mixed stands with various admixture of hornbeam (Carpinus betulus L.) in the period of 9−13 years after planting were examined. The trial stand is located in central Poland (51.827023° N, 19.922315° E). It was established in 2004 on a moderately fertile site. Four experimental variants with different participation of oak (O) and hornbeam (H) were established: W1 – an oak monoculture (control variant, 100% O), W2 – a mixed stand consisting of two rows of oak and one row of hornbeam (67% O, 33% H), W3 – a mixed stand consisting of one row of oak and one row of hornbeam (50% O, 50% H), W4 – a mixed stand characterized by a single tree mixture, with three oaks and one hornbeam alternately occurring in each row (75% O, 25% H). During the first two years of the study period the height increments of oak trees were significantly larger in the study variants with hornbeam (the biggest in W3 variant), while during the next two years, the largest values of height increments occurred in the control variant (W1). Through the second part of the study period, the most pronounced, negative effect of hornbeam on the dbh increment of oak trees took place in the W3 variant. During the first nine years after planting the survival rate of oak trees in the variants with hornbeam were similar (82−94%) as in the control variant (85%). However, during the next four years, three times more oaks died in W3 variant (16,5%) than in other variants (5−7%). In general, the results obtained suggest that in order to create mixed oak stands with hornbeam as a nursery species, the share of hornbeam should not exceed 20−25% of all planted trees. The above value appears to be acceptable from the point of view of the negative competitive effects of hornbeam on oak trees during the initial stages of stand development.
    Źródło:
    Sylwan; 2018, 162, 12; 989-997
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamika i główne kierunki zmian w drzewostanach zagospodarowanej części Puszczy Białowieskiej
    Dynamics and main direction of change in forest stands constituting the managed part of Bialowieza Forest
    Autorzy:
    Bruchwald, A.
    Dmyterko, E.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/985942.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    drzewostany gospodarcze
    dynamika drzewostanu
    siedliska lesne
    struktura drzewostanu
    sklad gatunkowy
    struktura wiekowa
    miazszosc drzewostanow
    przyrost miazszosci
    abiotic and biotic threats
    forest age structure
    low−productivity stands
    stand productivity
    stand volume
    stand stability
    species composition
    wind risk model
    Opis:
    The paper describes current (in years 2007−2017) changes of basic parameters of forest stands that constitute the managed part of Białowieża Forest (ca. 53,000 ha), divided into three forest districts: Białowieża (12,600 ha), Hajnówka (19,700 ha) and Browsk (20,400 ha). The investigated tree stands represent different phases of ecological succession, modified by silvicultural treatments and other human activities. The course of the succession processes is varied, depending, first of all, on local site conditions, consisting mainly of fresh sites (ca. 60%) – particularly fresh broadleaved forest, and encompassing exceptionally high fraction of wet and swamp sites (40%) – especially wet broadleaved forest site type. Most stands represent the intermediate, highly productive phase of succession, with spruce and oak as the dominant tree species. In particular, such stands are common in Białowieża and Hajnówka forest districts. Recently, the share of the mentioned stands is declining, most intensely in the Browsk Forest District. In 2017 alone, 430 ha of highly productive forest stands disappeared from the Białowieża Forest. The process of decay involved mixed stands; besides of spruces which were killed by a current bark beetle infestation, also many oaks, pines, birches, alders as well as rare and valuable minor tree species (such as ashes and maples) died. Dying spruce and, more often, oak stands are often replaced by low−productive hornbeam trees, occupying earlier lower stand strata in such stands. The resulting hornbeam stands are often distinguished by low crown closure and low productivity. Tree stands occurring in the Białowieża Forest are among the most endangered by wind damage stands in Poland. It means that in case of strong winds, several trees will be broken and/or uprooted. The intensity of such phenomena will be further increased by the high tree volume of stands as well as by the presence of many gaps in forest canopy, caused by a massive mortality of spruce trees. In general, one may expect that in the nearest future many stands occurring in the Białowieża Forest, built by different tree species, will be subject to a massive decay. The list of factors contributing to this process is long and involves, among other things, recurring droughts during the growing season, unfavorable changes in ground water table and increased frequency of strong winds. All these factors negatively influence the health status of trees, which further favours the development of parasitic fungi and insects. In consequence, there is a high probability that many areas in the Białowieża Forest will, for a long time, retain a treeless character and/or will be occupied by low−productive and single species hornbeam stands.
    Źródło:
    Sylwan; 2018, 162, 11; 897-906
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Odnowienie naturalne drzew w Puszczy Białowieskiej
    Natural regeneration of trees in the Bialowieza Forest
    Autorzy:
    Brzeziecki, B.
    Andrzejczyk, T.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/985949.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    odnowienia naturalne
    drzewa lesne
    topola osika
    Populus tremula
    brzoza brodawkowata
    Betula pendula
    brzoza omszona
    Betula pubescens
    olsza czarna
    Alnus glutinosa
    sosna zwyczajna
    Pinus sylvestris
    dab szypulkowy
    Quercus robur
    jesion wyniosly
    Fraxinus excelsior
    klon pospolity
    Acer platanoides
    wiaz gorski
    Ulmus glabra
    swierk pospolity
    Picea abies
    lipa drobnolistna
    Tilia cordata
    grab pospolity
    proces dorastania
    ekosystemy lesne
    dynamika lasu
    active approach
    deer browsing
    long−term study
    multifunctional forest management
    natural recruitment
    nature conservation
    silvicultural treatment
    strict protection
    tree competition
    tree diversity
    Opis:
    Since several years already, a massive infestation of bark beetle has taken place in the Białowieża Forest, decimating a local Norway spruce population. In consequence, many open areas appeared, practically deprived of trees and other forest vegetation. The existence of such areas has a very negative impact on multiple values of the Białowieża Forest: natural, social, economical and landscape−aesthetic values. The local forest administration prepared a strategy aimed at active restoration of diverse woodland communities typical for the Białowieża Forest in all places, where bark beetle infestation wiped up the spruce stands. Those plans were criticized by representatives of the environmental organizations who blamed the foresters for transforming the Białowieża Forest into ‘plantation’ and claiming that such measures are inconsistent with the existing forest management and protection plan. The postulate of environmentalists is that the recovery of woodland communities should proceed completely naturally. Taking into account the above mentioned controversies, in this paper we examine the issue of natural regeneration in the Białowieża Forest in detail. In particular, we try to determine to which extent this method of forest reproduction enables re−establishment of compositionally diverse woodland communities, distinguished by a high level of biological diversity and able to provide a wide range of commodities and benefits important for today’s society. Based on an extensive literature review we show that a combination of different (abiotic and biotic) factors, influencing establishment and subsequent growth of seedlings and saplings in the Białowieża Forest has long been strongly unfavorable for many tree species. In this regard, one should particularly emphasize the negative role of large herbivores, especially red deer, which is present in the Białowieża Forest since the end of 19th century, when it became a private hunting ground for Russian tzars. The devastating effect of deer browsing on natural regeneration is a well−documented phenomenon and widely recognized problem in the forestry practice. The fencing of young forest generation against game pressure is an indispensable measure, needed to secure the continuous existence of several tree species (first of all those palatable and vulnerable to browsing). Very strong arguments for an active approach to the described problem delivers also a long−term study on natural forest dynamics conducted since 1936. It shows that under conditions of strict protection the regeneration capacity of the Białowieża tree species is very variable. These differences lead to the compositional simplification and impoverishment of many tree stands, with numerous negative consequences for local biodiversity. We underline that an active management strategy is a basic prerequisite for maintaining a diverse character of the Białowieża stands and their ability to provide all important ecosystem services on a sustainable basis. Such a strategy should include, beside of the phase of establishment, also the subsequent developmental stages of new forest generations. The general goal of such a strategy should be to secure a possibly high diversity of tree composition and to enable the development of tree species representing a full range of life−history strategies and playing different successional roles: from typical pioneer species, through intermediate, to climax species.
    Źródło:
    Sylwan; 2018, 162, 11; 883-896
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wieloletnia dynamika drzewostanów na dawnym zrębie kulisowym w warunkach ochrony ścisłej (Łysica, Góry Świętokrzyskie)
    Long-term dynamics of forest stands on a former narrow strip clear cut under conditions of strict protection (Lysica, the Swietokrzyskie Mountains)
    Autorzy:
    Brzeziecki, B.
    Janicki, S.
    Wiech, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008894.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    parki narodowe
    Swietokrzyski Park Narodowy
    obszary ochrony scislej
    rezerwat Lysica
    stale powierzchnie obserwacyjne
    zrab kulisowy
    drzewostany
    dynamika drzewostanu
    zmiany skladu gatunkowego
    buk zwyczajny
    Fagus sylvatica
    jodla pospolita
    Abies alba
    swierk pospolity
    Picea abies
    klon jawor
    Acer pseudoplatanus
    zageszczenie drzew
    rozwoj drzewostanu
    stand dynamics
    long−term study
    narrow strip clear cut
    european beech
    norway spruce
    silver fir
    sycamore
    strict protection
    Opis:
    Major results of the 45−year−long study on the dynamics of strictly protected forest stands, using 3 permanent study plots, 25×100 m each, located on a former narrow strip clear cut established in the beginning of the 20th century on the northern slopes of the Mt. Łysica (the Świętokrzyskie Mountains, Central Poland) are presented. The general development of forest stands is analysed, including change of overall density, tree mortality rate (general and by species), dynamics of basal area and average tree diameter, competitive ability as well as changing role of particular species (mainly European beech, silver fir, sycamore and Norway spruce) in formation of the general stand structure. The results of the study are compared with other investigations of similar type.
    Źródło:
    Sylwan; 2011, 155, 08; 518-529
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ ogłowienia i przerzedzenia na wzrost grabu (Carpinus betulus L.) w młodniku dębowym (Quercus petraea (Matt.) Liebl.)
    Influence of decapitating and thinning on growth of hornbeam (Carpinus betulus L.) in the oak (Quercus petraea (Matt.) Liebl.) thicket
    Autorzy:
    Andrzejczyk, T.
    Brzeziecki, B.
    Szeligowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/979514.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewostany mieszane
    drzewostany grabowo-debowe
    mlodniki
    grab pospolity
    Carpinus betulus
    zabiegi pielegnacyjne
    przerzedzanie
    oglawianie
    wzrost roslin
    przyrost wysokosci
    przyrost piersnicy
    interspecific competition
    pre−commercial thinning
    decapitating
    mixed stand
    Opis:
    The aim of this study was to quantify 4−year growth and increment of 11− to 15−year−old, artificially regenerated hornbeam (Carpinus betulus L.) playing the role of the tending (nursery) species in the oak stand of the same age, after the silvicultural treatments aimed at reducing its competition against the oak. The study included three types of experimental treatments: decapitating of all hornbeam trees (OG), schematic reduction of hornbeam density (R50, removal of every second hornbeam in a row) and control (K, without treatment). The trial stand is located in Rogów (51.827023° N, 19.922315° E) and was established in 2004 on a moderately fertile site. The experiment was carried out in the spring 2013 (9 years after planting). Height and breast height diameter (dbh) of trees were measured every two years. During the study period, the height increment of decapitated trees was significantly larger than in R50 and K variants, while the dbh increment of trees in R50 variant was significantly larger than in K and OG variants. The height increment of hornbeam in R50 and OG variant and the dbh increment in R50 variant were positively correlated with height and diameter of trees before the treatment, while the dbh increment after decapitating was negatively correlated with tree dimensions before treatment. The decapitating treatment reduced the competitive ability of hornbeam more effectively than the schematic thinning removing 50% of hornbeam trees. After 4 years in the first case, oaks were on average 1 m higher than hornbeams, and in the second case, there was an opposite situation. In order to improve the effectiveness of the thinning treatment, a selective cutting should be performed (removal of the largest hornbeams), and in order to slow down the regeneration of hornbeams after decapitating, the treatment should be carried out during the top of the growing season.
    Źródło:
    Sylwan; 2019, 163, 03; 179-187
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany flory roślin naczyniowych runa leśnego w latach 1959-2016 na stałej powierzchni badawczej w oddziale 319 Białowieskiego Parku Narodowego
    Changes of herb layer vegetation during the period 1959-2016 on the permanent study plot in the compartment 319 of Bialowieza National Park
    Autorzy:
    Brzeziecki, B.
    Ciurzycki, W.
    Keczyński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/985863.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Bialowieski Park Narodowy
    badania florystyczne
    stale powierzchnie badawcze
    runo lesne
    flora
    gatunki rzadkie
    gatunki chronione
    zmiany skladu gatunkowego
    lata 1959-2016
    biodiversity loss
    ground vegetation
    long−term research
    protected plant species
    rare plant species
    red
    list species
    strict protection
    Opis:
    Changes in the herbaceous layer (vascular plants), taking place between 1959 and 2016 on the permanent study plot in the compartment 319 of the Strict Reserve in the Białowieża National Park are presented. Zaręba [1972] presented phytosociological research carried out in 1959 on the 1.2 ha plot. The author established 10 relevés (size between 100 and 400 m2), in which in total 91 different species of vascular plants were noted. In 2016, the similar study was conducted, using slightly modified methods (the inventory of plants involved the total area of the study plot). The comparison of data recorded during both investigations revealed that the total number of plant species declined from the initial 91 to current 83. During the ca. 60−year long period, 43 plant species disappeared completely and were replaced by 35 new species. In the declining group, almost the half (20) were species important from the point of view of nature conservation, including four Red List species (Arnica montana, Goodyera repens, Lathyrus laevigatus, Trolius europaeus), 10 plant species protected by law, and several other precious species related to rare and declining woodland community types. The obtained results confirm the findings of other authors describing unfavourable changes in the flora of the Białowieża Forest during the past several tens of years. The floristic richness is an important part of the overall biodiversity of Białowieża Forest. It appears that strict protection does not secure the maintenance of this key component. Thus, an attempt to preserve diverse values of Białowieża Forest on a sustainable basis should, first of all, look for a proper balance between strict and active protection. The later can (and should) be integrated within the multifunctional forest management, conducted on the prevailing area of the Białowieża Forest.
    Źródło:
    Sylwan; 2018, 162, 12; 980-988
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model składu gatunkowego drzewostanu dla lasów w Sudetach z uwzględnieniem zmian klimatycznych
    Species composition model for the forests of the Sudety Mountains with regard to climate change
    Autorzy:
    Dmyterko, E.
    Bruchwald, A.
    Mionskowski, M.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/979139.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    abiotic and biotic factors
    climatic change
    forest damage
    forest functions
    stand composition
    Opis:
    Climate change creates a big challenge for forest science. One of several problems calling for urgent solution concerns the elaboration of the scientific foundations for determination of the species composition of forest stands under changing environmental conditions. This problem is particularly acute in case of declining Norway spruce stands in the Sudety Mountains (SW Poland). The paper presents the main principles used to develop a model allowing determination of the most desirable species composition for any given forest stand occurring in the Sudety region. These principles include: 1) an assumption that a basis for species composition planning should be a forest site type, corrected by means of site index of the currently existing forest stand, 2) a supposition that one should broadly consider present processes taking place in Sudety stands, particularly, an intense forest dieback caused by recurring drought periods and strong winds, 3) a postulate that one should consider the differences between tree species in respect to their reaction to particular abiotic factors, 4) an assumption that majority of stands should consist of several different tree species, 5) an assumption that introducing on a wide scale Douglas fir, well−adapted to the conditions of the Sudety Mountains, is allowed, 6) an idea that one should take into account differentiated production potential and varied timber quality of particular tree species, 7) an assumption that one should consider the main features of topography (altitude, exposition, slope) as well as 8) fine elements of micro−topographical situation, as a basis for introduction of different tree species. The results obtained by means of the model based on the above mentioned principles are presented on the example of two forest districts: Lądek−Zdrój (fig. 4a, b) and Szklarska Poręba (fig. 5a, b). In both cases, a necessity to diminish the share of Norway spruce and to increase the share of such species like common beech, silver fir, Douglas fir and European larch is demonstrated. One may expect that projected compositions, taking into account the most appropriate tree species and their most suitable localizations, will allow establishment of forest stands which will be more resistant to drought and wind and, thus, will be more able to fulfill several important forest functions (related to water and soil protection, protection of forest biodiversity and timber production).
    Źródło:
    Sylwan; 2020, 164, 06; 454-466
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ potencjalnych zmian klimatycznych na zdolność konkurencyjną głównych gatunków drzew w Polsce
    Impact of potential climate changes on competitive ability of main forest tree species in Poland
    Autorzy:
    Zajączkowski, J.
    Brzeziecki, B.
    Perzanowski, K.
    Kozak, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/991514.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    zmiany klimatyczne
    oddzialywanie na rosliny
    drzewa lesne
    gatunki lasotworcze
    jodla pospolita
    Abies alba
    olsza czarna
    Alnus glutinosa
    brzoza brodawkowata
    Betula pendula
    buk zwyczajny
    Fagus sylvatica
    jesion wyniosly
    Fraxinus excelsior
    swierk pospolity
    Picea abies
    sosna zwyczajna
    Pinus sylvestris
    dab szypulkowy
    Quercus robur
    konkurencyjnosc
    climate change
    forest gap model
    growth multipliers
    tree competition
    Opis:
    An influence of environmental changes upon forest tree species competition was studied for suggested scenario of environmental changes (3−4°C increase of monthly temperatures), 8 main tree species and 6 natural regions. For a synthetic assessment of the reaction of various species for thermal and higric parameters of the climate, the growth multipliers DDGF and SMGF were used. The main environmental factor influencing future growth of tree species in Poland will be water shortage due to increased evapotranspiration. Regional decrease of water sensitive species importance, eg. alder, spruce and birch, accompanied by country−scale expansion of highly competitive, late−successional species, eg. beech and hornbeam is expected.
    Źródło:
    Sylwan; 2013, 157, 04; 253-261
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany leśnych zbiorowisk roślinnych w latach 1959-2016 na stałej powierzchni badawczej w oddziale 319 Białowieskiego Parku Narodowego
    Changes of woodland plant communities during the period 1959-2016 on the permanent study plot in the compartment 319 of the Bialowieza National Park
    Autorzy:
    Ciurzycki, W.
    Brzeziecki, B.
    Zaniewski, P.T.
    Keczyński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/985936.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    parki narodowe
    Bialowieski Park Narodowy
    fitosocjologia
    zbiorowiska roslinne
    zbiorowiska lesne
    stale powierzchnie badawcze
    zespol Tilio-Carpinetum
    zespol Serratulo-Pinetum
    zmiany florystyczne
    lata 1959-2016
    community decline
    floristic ordination
    long−term research
    serratulo−pinetum
    tilio−carpinetum
    strict
    protection
    Opis:
    The long−term changes of vegetation cover at the level of woodland community taking place between 1959 and 2016 on the permanent study plot located in the compartment 319 of Białowieża National Park are discussed. In 1959 two distinctive woodland community types occurring on sample plot were distinguished: subboreal mixed pine−oak forest (Serratulo−Pinetum) and hornbeam−lime forest (Tilio−Carpinetum). The phytosociological investigations, carried out almost 60 years later, revealed that in case of both communities, significant, directional changes of their floristic composition took place. Particularly high rate of change occurred in case of the phytocoenosis representing the Serratulo−Pinetum community. In 1959 it contained a full set of characteristic plant species. During the study period, this community type representing the Vaccinio−Piceetea class, was replaced by the initial form of lime−hornbeam forest belonging to the Querco−Fagetea class. Also, in case of the previous Tilio−Carpinetum association, the significant changes in the floristic composition occurred, although not as large as in case of Serratulo−Pinetum community. 60 years ago this community type contained several plant species typical for thermophilous oak forests. Nowadays, it represents a typical form of lime−hornbeam association. The changes in both community types were mainly related to the strong expansion of lime and hornbeam, which took place during the study period and involved the whole study plot. As a result, the vegetation occurring on the study plot is much more homogenous now than it was ca. 60 years ago. The maintenance of Serratulo−Pinetum phytocoenoses distinguished by a high floristic diversity calls for active protective measures in all cases where such measures are allowed and where this community type can potentially develop.
    Źródło:
    Sylwan; 2018, 162, 11; 907-914
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie drzew klasyfikacji do określenia preferencji środowiskowych gatunków na przykładzie głuszca (Tetrao urogallus)
    Application of classification trees for assessment species habitat preferences on the example of capercaillie (Tetrao urogallus)
    Autorzy:
    Bolibok, L.
    Brzeziecki, B.
    Drozdowski, S.
    Zawadzka, D.
    Zawadzki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/990006.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lowiectwo
    ptaki lowne
    gatunki chronione
    gluszec
    Tetrao urogallus
    preferencje srodowiskowe
    metody analizy
    drzewo klasyfikacyjne
    classification
    tetrao urogallus
    environmental preferences
    augustowska forest
    Opis:
    Habitat preferences of capercaillie Tetrao urogallus in the Augustowska Forest (NE Poland) were evaluated using classification trees. Data were collected on 1033 circular sampling plots localized on leks and in their vicinity with 1 km radius. Gathered information described tree stands (site conditions, age, species composition, tree density, closure, vertical structure, lower strata coverage (saplings and shrubs) and blueberry coverage (Vaccinium myrtillus) as well signs of capercaillie presence. The analysis shows that for capercaillie of key importance are tree stands growing on fresh or wet coniferous sites, more than 100 years old, with density less than 446 trees/ha, with anthill and situated more than 150 from a road.
    Źródło:
    Sylwan; 2014, 158, 04; 267-276
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kształtowanie zróżnicowanej struktury drzewostanów w warunkach nizinnych
    Promoting diverse forest stand structure under lowland conditions
    Autorzy:
    Brzeziecki, B.
    Drozdowski, S.
    Bielak, K.
    Buraczyk, W.
    Gawron, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/994357.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    drzewostany
    struktura drzewostanu
    struktura warstwowa
    struktura gatunkowa
    ksztaltowanie struktury
    postepowanie hodowlane
    struktura grubosci
    rozklad piersnic
    metoda BDq
    białowieża forest
    close−to−nature silviculture
    stand structure
    silvicultural planning
    stocking control
    Opis:
    The paper presents preliminary results and experiences concerning promoting diverse structures in forest stands dominated by light demanding tree species, i.e. those that prevail under conditions of Polish lowlands. Data was collected in the ‘Control Unit Browsk 28C', established in 2002 in the managed part of the Białowieża Forest (eastern Poland) and surveyed again in 2011.
    Źródło:
    Sylwan; 2013, 157, 08; 597-606
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of different methods of site preparation on natural regeneration of Pinus sylvestris in Eastern Poland
    Autorzy:
    Aleksandrowicz-Trzcinska, M.
    Drozdowski, S.
    Brzeziecki, B.
    Rutkowska, P.
    Jablonska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/41158.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    natural regeneration
    Pinus sylvestris
    Scotch pine
    seedling density
    seedling growth
    seedling quality
    soil scarification
    Polska
    Opis:
    Mechanical site preparation (MSP) is commonly used to enable forest regeneration of clear-cuts. Less intense methods may be more suitable from an environmental point of view, but such a method can result in the lack of natural regeneration. We compare the influence of three MSP methods on natural regeneration of Scots pine. The methods differ in their degree of soil disturbance. The effects of MSP by forest plough (FP), active plough (AP), and forest cutter (FC) on density, quality, and biometric parameters of one-year old seedlings were determined. The highest density of seedlings was obtained in the FP treatment (188,000 seedlings ha–1). The seedling density was significantly lower in the AP method (121,000 seedlings ha–1), and in the FC variant (36,000 seedlings ha–1). The best quality seedlings were found in the FC variant, and the worst – in the FP treatment. Most biometric parameters of seedlings did not differ by MSP method, except for the root length and root:shoot ratio. By the end of growing season, in the FP treatment, 1-year old seedlings formed a top bud more than twice as often as the seedlings from the AP and FC treatments. The FP method led to the best Scots pine natural regeneration. The results obtained in the FC variant were not as good as in the FP method, though they were still acceptable from the silvicultural point of view. The FC method was the least intensive method of site preparation, yet it is considered the most appropriate from the environmental (soil protection) point of view.
    Źródło:
    Dendrobiology; 2014, 71
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena preferencji środowiskowych głuszca Tetrao urogallus i możliwość ich uwzględnienia w realizacji zadań z hodowli lasu
    An assessment of Capercaillie Tetrao urogallus habitat preferences and possibility of their consideration in fulfilment of forest management tasks
    Autorzy:
    Brzeziecki, B.
    Drozdowski, S.
    Zawadzka, D.
    Zawadzki, J.
    Buraczyk, W.
    Gawron, L.
    Bielak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/880847.pdf
    Data publikacji:
    2011
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
    Tematy:
    ptaki lowne
    gatunki chronione
    gluszec
    Tetrao urogallus
    preferencje srodowiskowe
    Puszcza Augustowska
    Źródło:
    Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2011, 13, 2[27]
    1509-1414
    Pojawia się w:
    Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Problem masowego zamierania drzewostanów świerkowych w Leśnym Kompleksie Promocyjnym "Puszcza Białowieska"
    Problem of a massive dying-off of Norway spruce stands in the 'Bialowieza Forest' Forest Promotional Complex
    Autorzy:
    Brzeziecki, B.
    Hilszczański, J.
    Kowalski, T.
    Łakomy, P.
    Małek, S.
    Miścicki, S.
    Modrzyński, J.
    Sowa, J.
    Starzyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/985913.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lesne kompleksy promocyjne
    Lesny Kompleks Promocyjny Puszcza Bialowieska
    drzewostany swierkowe
    stan sanitarny
    zagrozenia drzewostanow
    szkodniki roslin
    kornik drukarz
    Ips typographus
    dynamika populacji
    gradacja
    drewno martwe
    grzyby patogeniczne
    zagrozenie pozarowe
    zamieranie lasow
    norway spruce bark beetle infestation
    białowieża forest
    ecosystem stability
    multifunctional forestry
    natura 2000 plc200004
    natural values
    world heritage site
    Opis:
    The Białowieża Forest (BF) is in many respects an exceptional object, of a great importance for nature protection and forest management, at the international scale. The BF plays also a key role from the point of view of regional development and welfare of local community. In the last period, a big threat for multiple values of the BF has arisen, as a result of enormous bark beetle infestation, which started in 2012 and has killed 1.4 million m3 of spruce trees. In the paper, first, a brief overview of the general history of the BF and an account of long−term human impacts on its functioning and structure is provided. Next, the history of bark beetle infestations in the BF is analysed. It is shown that, in the period 1992−2007, the average volume of spruces killed by bark beetle amounted on average to 20,000 m3 of wood annually. During that period practically all dead trees were removed from the forest by means of salvation cuttings. Starting from 2008, more and more trees infested by European spruce bark beetle were left in the forest, in a result of a pressure exerted by environmental groups. In 2012, Minister of Environment decided to reduce the allowable cut, determined in forest management plans elaborated for the managed part of the BF, from 107,000 to 48,500 m3/year. This decision, along with several other regulations and restrictions, made in practice impossible to stop the development of a current bark beetle infestation, which started in 2011 and intensified during the next 6 years (solely in 2016 bark beetles killed 480,000 m3 of spruce trees). In the paper, the most important implications and consequences of the current situation are briefly summarized and discussed. A special attention is given to the problems concerning: 1) protection of Natura 2000 species and sites (endangered by bark beetle outbreak), 2) a negative influence of large amounts of spruce deadwood on forest soils, 3) threats caused by pathogenic fungi, 4) question of public safety, 5) fire hazard, and 6) economical dimension. The legal and socio−economical foundations of the functioning of Hajnówka, Browsk and Białowieża forest districts comprising the managed part of the BF, as well as their most important environmental and social consequences are discussed too. Among others, it is indicated that, under current conditions of the BF, human intervention plays a key role in maintaining stable and compositionally diverse woodland communities. Finally, several suggestions and recommendations are provided, aimed at, in the short term, breaking off the current bark beetle outbreak, and, in the long term, at maintaining a multifunctional character of the BF and its ability to provide all important ecosystem services on a sustainable basis.
    Źródło:
    Sylwan; 2018, 162, 05; 373-386
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zagrożone gatunki drzew Białowieskiego Parku Narodowego (Rezerwat Ścisły)
    Threatened tree species of the Bialowieza National Park (the Strict Reserve)
    Autorzy:
    Brzeziecki, B.
    Keczyński, A.
    Zajączkowski, J.
    Drozdowski, S.
    Gawron, L.
    Buraczyk, W.
    Bielak, K.
    Szeligowski, H.
    Dzwonkowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1007075.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    Bialowieski Park Narodowy
    rezerwaty scisle
    Obreb Ochronny Orlowka
    stale powierzchnie obserwacyjne
    sklad gatunkowy
    drzewa lesne
    grab
    lipa
    swierk
    olsza
    brzoza
    dab
    sosna
    jesion
    klon
    wiaz
    topola osika
    zageszczenie populacji
    liczebnosc
    struktura grubosci
    gatunki dominujace
    gatunki zagrozone
    diameter distribution
    dynamic status
    large−scale inventory
    long−term trend
    natural forest
    permanent plot
    population density
    population dynamics
    strict protection
    Opis:
    An assessment of the current dynamic status of tree species occurring in the Strict Reserve of the Białowieża National Park is presented. On the basis of long−term trends and analysis of large−scale inventory data, the three major groups of trees are distinguished: 1) ‘safe’ group, containing hornbeam and lime, 2) ‘presently safe, but declining in a long−term run’ group, involving spruce, birch and alder, and 3) ‘threatened and highly threatened’ group, consisting of oak, pine, ash, maple, elm and aspen.
    Źródło:
    Sylwan; 2012, 156, 04; 252-261
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wieloletnia dynamika starodrzewów w zagospodarowanej części Puszczy Białowieskiej: gatunki ekspansywne i ustępujące
    Long-term dynamics of old-growth stands in the managed part of the Bialowieza Forest: increasing and declining tree species
    Autorzy:
    Drozdowski, S.
    Brzeziecki, B.
    Żybura, H.
    Żybura, B.
    Gawron, L.
    Buraczyk, W.
    Zajączkowski, J.
    Bolibok, L.
    Szeligowski, H.
    Bielak, K.
    Widawska, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008501.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    starodrzew
    dynamika drzewostanu
    drzewa lesne
    swierk
    grab
    jesion
    olsza
    dab
    lipa
    brzoza
    klon
    sosna
    wiaz
    zageszczenie drzew
    piersnicowe pole przekroju
    piersnice drzew
    gatunki ekspansywne
    gatunki ustepujace
    stale powierzchnie obserwacyjne
    badania dlugoterminowe
    old−growth forest
    permanent plot
    long−term trend
    population density
    population dynamics
    tree species
    Opis:
    In the paper, an assessment of tree population dynamics in the old−growth stands of the managed part of the Białowieża Forest is presented. Data from five permanent sample plots with a total size of 9.3 ha and six inventories that cover the period 1949−2006, were used. Depending on the dynamic status, determined on the basis of changes in a number of individuals per hectare, basal area and quadratic mean diameter, three major groups of tree species were distinguished: 1) an increasing group, containing only hornbeam and lime; 2) a stable group, involving alder and spruce and 3) a declining group consisting of oak, ash, maple, pine, birch, elm and aspen.
    Źródło:
    Sylwan; 2012, 156, 09; 663-671
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Struktura i dynamika wielogeneracyjnych starodrzewów sosnowych występujących w obszarach ochrony ścisłej Kaliszki i Sieraków w Kampinoskim Parku Narodowym. Część 2. Procesy zamierania i dorastania oraz ich wpływ na rozkład grubości drzew
    Structure and dynamics of uneven−aged, Scots pine−dominated, old−growth stands in Kaliszki and Sieraków strict reserves in Kampinos National Park. Part 2. Tree mortality and recruitment processes and their effects on tree diameter distributions
    Autorzy:
    Brzeziecki, B.
    Zajączkowski, J.
    Olszewski, A.
    Bolibok, L.
    Andrzejczyk, T.
    Bielak, K.
    Buraczyk, W.
    Drozdowski, S.
    Gawron, L.
    Jastrzębowski, S.
    Szeligowski, H.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/979128.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    demographic non−equilibrium
    diameter structure
    long−term study
    old−growth forest
    permanent study
    plot
    scots pine
    strict protection
    Opis:
    Two fundamental demographic processes (tree recruitment and mortality) are analyzed for forest stands growing on permanent study plots located in strictly protected Scots pine−dominated, old−growth stands of Kampinos National Park (central Poland). The major implications of the observed demographic trends for the general shape of tree size distributions are determined, as well. During the past ca 30 years, in the stands sampled, there was a pronounced lack of balance between mortality and recruitment processes. Mortality rate was eight times higher than recruitment rate. Eventually, there was a net significant decline in population density, observed for all major tree species, including Scots pine, pedunculate oak, silver and downy birch, and black alder. As mortality processes affected mainly smaller trees, there was also a significant deterioration of the general demographic status of most important tree species. This effect was shown by the change of the overall shape of diameter distributions over the study period: from reverse J−shaped to flat curves running nearly parallel to X−axis. The values of recruitment rates were markedly lower, and the values of mortality rates – significantly higher, than analogous values characterizing comparable forests (e.g., those obtained for the natural stands of Białowieża National Park). Low recruitment rates, as obtained for Kampinos stands, suggest that presently, in the local, Scots pine−dominated, old−growth stands, the general conditions for forest regeneration and for maintaining a long−term demographic stability are unfavorable. Most probably, the regeneration of this type of forest has an episodic, ‘wave−like’ character and corresponds to the ‘catastrophic’ model, according to which the successful regeneration of current dominants (especially Scots pine, silver and downy birch, black alder) must be preceded by a stand−initiating (stand−replacing) disturbance, leading to total or partial, but heavy, destruction of the currently existing stand. At the moment, it would be difficult to predict, however, if and when such a disturbance will affect the stands under investigation. Thus, we predict that in the nearest future at least, the state of overall demographic unbalance will continue or even increase.
    Źródło:
    Sylwan; 2020, 164, 06; 443-453
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Struktura i dynamika wielogeneracyjnych starodrzewów sosnowych występujących w obszarach ochrony ścisłej Kaliszki i Sieraków w Kampinoskim Parku Narodowym. Część 1. Zróżnicowanie gatunkowe, zagęszczenie i pierśnicowe pole przekroju
    Structure and dynamics of uneven−aged Scots pine−dominated old−growth stands in Kaliszki and Sieraków strict protection areas in the Kampinos National Park. Part 1. Species composition, tree density and basal area
    Autorzy:
    Brzeziecki, B.
    Zajączkowski, J.
    Olszewski, A.
    Bolibok, L.
    Andrzejczyk, T.
    Bielak, K.
    Buraczyk, W.
    Drozdowski, S.
    Gawron, L.
    Jastrzębowski, S.
    Szeligowski, H.
    Żybura, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/978936.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    forest dynamics
    long−term research
    old−growth forest
    permanent study plot
    strict protection
    tree
    species composition
    Opis:
    The paper describes changes, which took place over the last 30 years in old−growth forest stands occupying two permanent research plots, established in the Kaliszki and Sieraków strict protection areas in the Kampinos National Park (central Poland). Both plots have a form of ecological transects. The Kaliszki plot is 20 m wide and 700 m long (1.40 ha), while the Sieraków plot (total area of 2.56 ha) consists of two parts: main (40×460 m) and side (40×180 m) transect. In the Kaliszki plot, the stand measurements were conducted in 1993, 2007, and 2017, while in the Sieraków plot – in 1989, 1994, 2006, and 2017. For every tree with breast height diameter (DBH) 5 cm, species identity, DBH and spatial coordinates were determined. Starting from the second census, all trees which had died (‘losses’), as well as trees which exceeded the DBH threshold (‘gains’) since the previous record were noted, as well. The major tree species occurring on sample plots are Scots pine (Pinus sylvestris), pedunculate oak (Quercus robur), silver and downy birch (Betula sp.), and black alder (Alnus glutinosa). During the study period, the overall tree density declined by ca. 50%. The diminishing trends occurred for all dominant tree species. In contrast to major, dominant tree species, the demographic status of a group of minor tree species (lime, hornbeam and maple) was much more stable. One may even speak about some expansion in this case. Particularly, hornbeam density increased rapidly in the period 2006−2017 in some areas of the main transect located in the Sieraków plot. The future studies will show if this tendency will be maintained and will include other regions of sample plots. Assuming a lack of significant disturbances, one may expect that the stands growing on research plots will rather slowly change in the nearest future. Most dynamics will have a quantitative and not qualitative character. One may anticipate, for example, a growing role of pedunculate oak at the expense of Scots pine, however, considering that the two species are rather long−living, they will probably for a long time keep their dominant roles in the stand canopies.
    Źródło:
    Sylwan; 2020, 164, 05; 392-403
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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