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    Wyświetlanie 1-9 z 9
    Tytuł:
    Ekologia i biologia ptaków Puszczy Białowieskiej z perspektywy czterdziestoletnich badań
    Ecology and biology of birds in the Bialowieza Forest: a 40-year perspective
    Autorzy:
    Czeszczewik, D.
    Walankiewicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1294404.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    Bialowieski Park Narodowy
    fauna
    ptaki
    bogactwo gatunkowe
    ekologia zwierzat
    ptaki legowe
    zagrozenia zwierzat
    czynniki antropogeniczne
    Białowieża National Park
    temperate forests
    predation
    forest birds assembly
    forest management
    Opis:
    The aim of this study was to review the most important results from the last 40 years of intense ornithological research conducted in the Białowieża Forest. Furthermore, we discuss the threats that may destroy the unique ecology and characteristics of this forest. Studying the avifauna of the Białowieża Forest provides us with a good general knowledge about natural ecological conditions and relationships, which prevailed in temperate European forests in the past. The avifauna of the Białowieża Forest is characterized by features associated with primeval habitats such as the stability of communities over time, high species richness, relatively low densities, high proportion of hole-nesting birds, very high predation pressure and weak, insignificant competition interactions. This emphasizes the importance of predation, excess of nesting sites for cavity nesting birds, high abundance of food, especially for insectivorous species and fluctuation of bird population size due to rodent outbreaks (pulsed resources). The most severe threats for the avifauna of the Białowieża Forest are: rejuvenation of tree stands, removal of dead wood, fragmentation of old-growth stands, change of tree stand composition (reducing the proportion of some tree species). In order to expand our ecological knowledge about birds, we should keep the Białowieża Forest fully protected for years to come. The main priority should be the maintenance of natural processes changing the forest’s species composition.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ zmian temperatury i wilgotności na cykle rozwojowe i znaczenie owadów w ekosystemach leśnych w związku z prawdopodobnymi zmianami klimatycznymi
    The effect of temperature and humidity changes on insects development their impact on forest ecosystems in the context of expected climate change
    Autorzy:
    Jaworski, T.
    Hilszczański, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317794.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    zmiany klimatyczne
    zmiany temperatury
    zmiany wilgotnosci
    oddzialywanie na zwierzeta
    owady
    cykl rozwojowy
    dynamika populacji
    znaczenie ekologiczne
    ekosystemy lesne
    global warming
    forest insects
    population dynamics
    forest insects outbreaks
    range shift
    phenology
    forest management
    Opis:
    Ongoing climate change is mainly evident as increased in average temperature. It is expected to have a significant impact on world's biomes, with forest ecosystems especially vulnerable to these changes. The effect of climate change on forests is both indirect, through its impact on various tree species of different ecological requirements, and direct, through its impact on all living components of the forest ecosystem. Among the latter, insects are the group of the greatest importance, including species detrimental to forest health. The impact of climate change on forest insects may be reflected in their distribution, phenology, activity, number of generations and, indirectly, through impact on their natural enemies. Predicting the future direction and pace of the climate change, as well as direct and indirect consequences of its effect on forest insects is difficult and often subject to considerable inaccuracy. The paper presents a review of data from the published literature in this area of study. The influence of the basic climate parameters, temperature and humidity, on forest herbivore insects is discussed, particularly in the context of the most probable scenarios of climate change, i.e. the gradual increase in the average temperature. Observed and projected impacts of climate change in relation to the influence of herbivorous insects on forest ecosystems are characterized. We present some of the possible adaptation strategies of forest management to the expected climate changes.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 4; 345-355
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena tempa zmian kosztów produkcji drewna "przy pniu" i cen surowca drzewnego w latach 2001-2009 na przykładzie Regionalnej Dyrekcji Lasów Państwowych w Zielonej Górze
    Evaluating variation in logged timber costs and raw timber prices during the period, 2001-2009, for the Regional Directorate of the State Forests in Zielona Gora
    Autorzy:
    Adamowicz, K.
    Kaciunka, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1316105.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    produkcja lesna przy pniu
    produkcja drewna
    koszty produkcji
    drewno
    sortymenty drewna
    ceny
    zmiany cen
    RDLP Zielona Gora
    forest management
    economics
    marketing
    prices
    costs
    rate of growth
    Opis:
    The rate of change in the cost of logged timber and prices of raw timber during the period, 2001-2009, was examined for the Regional Directorate of the State Forests in Zielona Góra. A logarithmic evaluation of average rate of change indicated that the rate of increase in timber harvest costs was higher than the rate of increase in the average price of raw timber and likewise the price of most log grades. The average increase in raw timber value was 2.51% annually. The price of low-diameter raw timber (slash) increased 8.61%, and the price of large-diameter timber increased 1.94% annually, while the price of large coniferous segments increased 1.75% and broadleaf segments increased 2.98% annually. At the same time, the timber logging costs increased more than the timber price, to 4.17%, or 4.19% when administrative costs related to timber logging are included.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 1; 55-60
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gospodarka leśna a występowanie zawiesin w wodach rzek i potoków i ich oddziaływanie na ichtiofaunę i ekosystemy rzeczne
    Forest management practices and the occurrence of suspended solids in rivers and streams and their influence on ichthyofauna and river ecosystems
    Autorzy:
    Mikołajczyk, T.
    Nawrocki, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292053.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    gospodarka lesna
    erozja gleb
    oddzialywanie na srodowisko
    rzeki
    potoki
    wody plynace
    zanieczyszczenia wod
    zawiesina mineralna
    ladunek zanieczyszczen
    oddzialywanie na zwierzeta
    ryby
    forest management
    soil erosion
    rivers
    ichthyofauna
    gospodarka leśna
    erozja gleby
    ichtiofauna
    Opis:
    This article is based on a literature review and attempts to highlight the harmful effects of forest soil erosion on aquatic ecosystems with particular emphasis on ichthyofauna. We focus on the phenomena of excessive soil erosion caused by forest management practices and forest roads, subsequent sediment runoff as well as silting of watercourses and their impact on fish. Among others, the direct influence of the suspended sediments on fish reproduction, egg incubation, respiratory processes, growth and immunity, as well as indirect effects on habitat and migration are discussed. The authors' intention is to draw attention to this important and underestimated aspect of forest management in Poland. The aim of this publication is to bring about changes in the management of commercial forests that will minimize the erosion of forest soils, formation of high levels of suspended solids in rivers and in turn limit their negative impact on aquatic ecosystems.
    Źródło:
    Leśne Prace Badawcze; 2019, 80, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Puszcza Białowieska - obiekt światowego dziedzictwa UNESCO - priorytety ochronne
    The Bialowieza Forest – a UNESCO Natural Heritage Site – protection priorities
    Autorzy:
    Kujawa, A.
    Orczewska, A.
    Falkowski, M.
    Blicharska, M.
    Bohdan, A.
    Buholz, L.
    Chylarecki, P.
    Gutowski, J.M.
    Latałowa, M.
    Mysłajek, R.W.
    Nowak, S.
    Walankiewicz, W.
    Zalewska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1294308.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    Swiatowe Dziedzictwo Kulturowe i Przyrodnicze UNESCO
    wartosc przyrodnicza
    las naturalny
    ochrona przyrody
    roznorodnosc gatunkowa
    siedliska przyrodnicze
    specjalne obszary ochrony siedlisk
    natural forests
    nature protection
    biodiversity
    natural ecological processes
    forest management
    Opis:
    Despite the fact that only parts of the Białowieża Forest are protected as a national park and nature reserves, the forest is nevertheless as a whole considered a U NESCO Natural Heritage Site, Biosphere Reserve and an integrated Natura 2000 site. In the presently ongoing debate on the conservation priorities regarding the natural value of this forest and the current bark beetle outbreak, two distinct approaches can be recognized: (1) management assumed to involve considerable interference with the forest ecosystems; (2) maintenance of ecological processes and spontaneous restoration of the forest communities. The Białowieża Forest – especially its strictly protected parts – is a “bastion” where species characteristic of ancient forests (including so-called primeval forest relicts) have survived until today. This has been achieved by maintaining the forest’s complexity in areas with considerably reduced human influence, but most of all by maintaining a full spectrum of forest communities, naturally developing forests diverse in age, species composition and spatial structure including stand dieback and breakdown. The following factors need to be taken into account in the protection of the Natural Heritage Site: (1) the internationally recognized value of the Białowieża Forest including its biodiversity, the level of preservation of forest communities and the ongoing natural processes; (2) existing documents and policies concerning nature conservation; (3) research findings from the Białowieża Forest and other natural forest complexes. The key priority is to limit any activities in this forest to an indispensable minimum, mostly concerning security close to roads and tourist tracks as well as collection of fire wood by locals. Without this strict protection, successive and slow anthropogenic transformation will result in the Białowieża Forest sharing the same fate as other forest complexes of the temperate climate zone in Europe or America and lose its globally appreciated value.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Znaczenie starodrzewu dla zachowania różnorodności porostów w lasach na przykładzie pozostałości Puszczy Mazowieckiej
    The significance of old-growth forests in maintaining lichen diversity - an example from the remnants of the Mazovian Forest
    Autorzy:
    Kubiak, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318694.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lichenologia
    Mazowsze
    Nadlesnictwo Ciechanow
    fragmentacja lasow
    rezerwaty przyrody
    rezerwat Lekowo
    rezerwat Modla
    starodrzew
    porosty
    Lichenes
    roznorodnosc gatunkowa
    sklad gatunkowy
    zachowanie roznorodnosci biologicznej
    lichens
    species diversity
    fragmentation
    nature conservation
    forest management
    lichen indices
    Opis:
    The paper presents the results of a lichenological study conducted in 2012 in the 'Lekowo' forest complex, situated in the north-western part of Mazovia (Forest Division of Ciechanów). It is the largest forest complex in the area, covering 1596 ha. The research area comprises two small nature reserves ('Lekowo' – 5.31 ha, and 'Modła' – 9.36 ha) with old-growth oak trees (160–200 years of age) and adjacent managed pine forests (76-107 years of age). The aim of this study was to investigate the species composition of the lichen biota in both reserves and to determine the role of nature reserves in preserving lichen diversity. Results of the study showed that old-growth stands, in particular those composed of oak trees above recommended felling age, provide habitats for a large group of stenotopic forest lichens which are absent in managed forests. The 'Lekowo' and 'Modła' nature reserves, despite their small areas, are valuable refuges that help to conserve remarkable lichen diversity at the local scale, and serve as potential diaspore sources for many rare and threatened lichen species.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 3; 245-255
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czy cała Puszcza Białowieska powinna być parkiem narodowym?
    Should the whole Bialowieza Forest be a national park?
    Autorzy:
    Zientarski, J.
    Szmyt, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1293519.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    lasy gospodarcze
    Bialowieski Park Narodowy
    ochrona przyrody
    uwarunkowania ekonomiczne
    uwarunkowania spoleczne
    uwarunkowania przyrodnicze
    Białowieża Forest
    Białowieża National Park
    nature conservation
    forest ecosystem conservation
    sustainable forest
    management
    Opis:
    In Poland, the stormy discussion on the future of the Białowieża Forest has been ongoing already for a long time. The disputes are mostly focused on seeking answers to two questions: how to protect these unique forest ecosystems and whether forest management threatens their naturalness. The discussion has grown stronger after the recent, enormous outbreak of Ips typographus in the Forest. The Białowieża Forest has been managed for years with no negative effect. However, antagonists of foresters blame forest management for degradation of the Forest’s ecosystems, which is caused by favoring the economic value of timber expected to be harvested in keeping with the management plans of 3 forest districts located in the Białowieża Forest. At any rate, such assumption, has nothing to do with reality. During this discussion the idea to extend the national park for all the Białowieża Forest revived. In this paper, we reviewed the economic, social and ecological dimensions which should be taken into consideration before making a decision on extending the Białowieża National Park. It should be underlined that the Park’s area is already under the strict protection; furthermore, 2/3 of the area of neighboring managed forests are under legal protection (the nature reserves, NATURA 2000, the so-called reference forests, etc.). All things considered, we cannot find any reasonable purpose (ecological, financial or social) for expanding the Park’s area from 10 500 ha (present status) to 62 500 ha (after extension). Also, we are convinced that sustainable forest management conducted in managed parts of the Białowieża Forest, which comprises the fulfillment of all forest functions and services, should not be perceived as a threat to naturalness of the Forest’s ecosystems.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena ekonomicznej efektywności gospodarki leśnej prowadzonej przez Leśny Zakład Doświadczalny w Krynicy
    Evaluation of the economic viability of forest management by the Forest Experimental Station in Krynica
    Autorzy:
    Kożuch, A.
    Ryś, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1294913.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    LZD Krynica
    gospodarka lesna
    efektywnosc ekonomiczna
    zarzadzanie finansami
    analiza wskaznikowa
    przychody
    koszty
    wyniki finansowe
    profitability
    financial management
    ratio analysis
    Forest Experimental Station in Krynica
    Opis:
    The Forest Experimental Station (FES) in Krynica is a unit specialized in teaching activities. However, it also fulfils other educational, ecological and social functions. Additionally, as the FES in Krynica operates on the free market and needs to be competitive, primarily with respect to the raw timber prizes, it is also a forest management unit that can be subjected to economic evaluation. The aim of this study was to analyze the income, costs and overall financial outcome of the FES in Krynica for the years of 2008–2012. A financial analysis, using indicators of financial liquidity, profitability, economic activity and liabilities, was also carried out to evaluate the economic effectiveness and efficiency of the forest management unit’s operation. The data was obtained from financial documents, particularly balance sheets, as well as profit and loss accounts. In the years of 2008–2012, mean income and costs of the FES in Krynica amounted to 7 121.1 thous. PLN/year and 6 478.2 thous. PLN/year, respectively. The net financial outcome was positive and amounted to a mean of 628.8 thous. PLN/year. The proportionof the sale income compared to the total income from all activities carried out by the unit increased from 93% to 96%. This included income from the sale of products, goods and materials, which increased by 57% mainly due to an increase in the income from timber sales (ca. 83%). Costs incurred by the unit increased as well, being 40% higher in 2012 than in 2008, while the cost level indicator decreased by ca. 8%. In the examined time period, the economic effectiveness and efficiency of the unit’s operation improved, as evidenced by the increasing profits and the values of the profitability indicators. Results obtained in the comprehensive analysis of the financial situation in the FES in Krynica provide a basis for the evaluation of economic processes and for appropriate decision making concerning wealth management and the direction of future development. In the evaluation of the economic and financial activity of the FES in Krynica, the increase inprofitability in the analysed time period, as concluded from the indicator of turnover profitability, was particularly noteworthy. The financial indicator values greatly exceed reference values only on the level of financial liquidity. The liability indicators served as evidence of obvious financial independence of the FES in Krynica.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spór o Puszczę Białowieską w świetle sporu o ochronę przyrody na świecie
    The Bialowieża Forest controversy in the light of the world dispute in conservation biology
    Autorzy:
    Witkowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1293784.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Puszcza Bialowieska
    lasy
    gospodarka lesna
    ochrona przyrody
    ochrona bioroznorodnosci
    koncepcja Soule
    koncepcja Kareiva i Marvier
    konflikt przyrodnicy-lesnicy
    Białowieża Forest
    naturalists vs. foresters
    conservation dispute
    Soulé and Kareiva
    management of bark beetle
    outbreak
    mess in conservation forms
    Opis:
    The controversy between naturalists and foresters on the management of the Białowieża Forest is one of numerous disputes in conservation biology. Cause of the dispute is a difference in stand-point on the purpose of nature conservation. Biocentrists (Soulé 1985) argue that the only goal should be to preserve natural processes as well as endangered ecosystems and species. Anthropocentrists on the other hand (Kareiva, Marvier 2012) support conservation as a need of mankind, i.e. the sustainable support of ecosystem services with the protection of species and ecosystems simply being a side effect. Another important factor in the dispute is the management of bark beetle mass outbreaks. Foresters try to control by removing the infested trees, but naturalists protest against this practice. However, in 2013 the European Commission clearly presented its statement in this regard (EU Guidelines on Wilderness in Natura 2000) and thus the dispute has only shown that none of the debating parties are familiar with the EU guidelines. According to the author, the more serious problem of messy organization of the Białowieża Forest conservation is rarely raised in the dispute. Multiple protected areas were established in the forest based on six different law forms for nature conservation and two forms of international origin. Such surplus of forms and areas leads to chaos and hinders the management of this valuable area.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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