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Wyszukujesz frazę "Ukalska, J." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Ceny surowca drzewnego w warunkach klęsk żywiołowych w Nadleśnictwie Węgierska Górka
    Timber prices after natural disasters in the Forest District of Wegierska Gorka
    Autorzy:
    Sikora, A.T.
    Ukalska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317481.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Nadlesnictwo Wegierska Gorka
    kleski zywiolowe
    pozyskiwanie drewna
    surowce drzewne
    drewno
    sortymenty drewna
    ceny jednostkowe
    rynek drzewny
    natural disasters
    timber assortments
    unit prices
    the timber market
    Opis:
    The aim of the study was to determine the impact of increased timber logging after natural disasters on timber assortments, unit prices, as well as average prices of timber spruce and total timber. The net sales prices of the years 2004-2010, available from the database of the State Forests Information System (SFIS) for the Forest District of Węgierska Górka, were analysed and compared to the prices of selected forest districts within the Regional Directorate of State Forests in Cracow (RDSF). The forest districts were classified based on the volume of logged timber leading to a separation into two groups of two and six forest districts. Moreover, we tested for significance in the linear trends of relevant characteristics and determined confidence intervals. Furthermore, we calculated the rate of growth (decrease) of the unit prices. Our studies show a decrease in price of only some of the timber assortments despite a significantly increased supply. Price declines were observed for the average prices of timber spruce and total timber due to their lowered quality. The price of timber assortments was mainly determined by effects of macroeconomic factors.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 201-212
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Koszty działalności podstawowej w warunkach klęsk żywiołowych w Nadleśnictwie Węgierska Górka
    The main costs of natural disasters in the Forest District of Wegierska Gorka
    Autorzy:
    Sikora, A.T.
    Ukalska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1312782.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    nadlesnictwa
    kleski zywiolowe
    skutki ekonomiczne
    gospodarka lesna
    dzialalnosc podstawowa
    koszty jednostkowe
    analiza kosztow
    Nadlesnictwo Wegierska Gorka
    natural disasters
    the core activity of Forest District
    unit costs
    the synthetic index of costs
    Opis:
    The aim of the study was to determine the impact of increased forest management due to natural disasters on particular core unit costs. We analysed the direct costs for the Forest District of Wêgierska Górka in the years 2004–2010 based on information from the State Forests Information System (SFIS) database compared with selected forest districts within the Regional Directorate of State Forests in Cracow (RDSF). The forest districts were divided into two groups with two and six forest districts and confidence intervals around the mean were determined and the significance of linear regressions of the considered characteristics was tested. Additionally, the growth rate (decrease) of the unit cost was calculated. Our studies showed that natural disasters affect only certain unit costs regardless of the intensity of the forest management. The increase in unit costs resulted in economic losses in forest management. A full long-term analysis of the economic impact of natural disasters should be done, taking into account the cost of reforestation of destroyed areas which may become apparent only some years later.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 3; 263-275
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Awifauna lęgowa dojrzałych drzewostanów Puszczy Boreckiej i jej zmiany na przełomie XX i XXI wieku
    Breeding avifauna of mature forest stands in the Borki Forest and its dynamics at the turn of the 21st century
    Autorzy:
    Rakowski, G.
    Czarnocki, K.
    Ukalska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1294672.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Puszcza Borecka
    lasy
    fauna
    ptaki
    gatunki legowe
    grupy ekologiczne
    zgrupowania zwierzat
    bogactwo gatunkowe
    zageszczenie zwierzat
    wykaz gatunkow
    Borki Forest
    bird assemblage structure
    species richness
    density changes
    forest habitats
    Opis:
    The composition and structure of the breeding bird community in the Borki Forest in north-eastern Poland were investigated during two separate periods: 1994–1996 and 2012–2014. Bird censuses were carried out in three plots located in mature oak-hornbeam, ash-alder and mixed coniferous forest stands. A standard combined mapping technique for estimating the number of breeding birds was applied. A total of 74 bird species bred at least once within any plot during 1994–1996 or 2012–2014. The structure of the bird assemblages on particular plots displayed a high degree of similarity, exceeding 75%, which means that they represent essentially the same bird community. However, the investigated assemblages have changed substantially over the 20 years. Both, the number of breeding bird species and the population densities on all plots, were much higher in 2012–2014 than in 1994–1996. The mean number of breeding species on all plots was over 50% higher in 2012–2014 than in 1994–1996, whereas the mean total density of breeding pairs increased by more than 60%. Total population densities on the plots increased as a result of an increase in population densities of individual bird species combined with an increase in the number of breeding species. Due to different rates of population growth for certain species, also the composition of dominating species group have changed. The observed changes in the avifauna of the Borki Forest were most probably due to an enrichment of the forest habitats structure, which was caused by natural factors, such as ageing of forest stands, forest succession and a change in water regime by beaver dams, as well as by forest management, including group felling within or in the vicinity of plots and uncovering of the forest edge.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Markery RAPD sprzężone z genami cech ilościowych sosny zwyczajnej (Pinus sylvestris L.)
    Random amplified polymorphic DNA markers linked to quantitaive traits loci in Scots pine (Pinus sylvestris L.)
    Autorzy:
    Szyp-Borowska, I.
    Ukalska, J.
    Siminska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/46443.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    geny cech ilosciowych
    markery RAPD
    pula genowa
    metody badan
    metoda BSA
    Źródło:
    Leśne Prace Badawcze; 2011, 72, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization and mapping of QTL used in breeding of Scots pine (Pinus sylvestris L.)
    Autorzy:
    Nowicka, A.
    Ukalska, J.
    Siminska, J.
    Szyp-Borowska, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/38570.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    genetic mapping
    quantitative trait locus
    plant breeding
    amplified fragment length polymorphism
    Scotch pine
    Pinus sylvestris
    Opis:
    This paper reports the construction a map based on Amplified Fragment Length Polymorphic DNA (AFLP) in Scots pine (Pinus sylvestris L.). The main purpose of map construction was its application to quantitative traits loci (QTL) mapping for breeding traits economically important in Scots pine breeding program such as tree height and diameter at breast height, number of needles and their length, width, and area. Genomic DNA of needles and haploid megagamethophytes from seeds originating from a single tree were amplified with 25 AFLP primer-enzyme combinations with three or four selective nucleotides. Sixteen of them generated easily readable patterns and revealed a polymorphism. Each analyzed marker was tested for the expected 1 : 1 segregation ratio using χ2 – test and only 6 were significant with (α ≤ 0.05). The total map size equaled 291,7 cM and all markers were distributed within one linkage group. For all traits only one QTL associated with tree height (H) was detected.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 4
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Podatność populacji jodły pospolitej na uszkodzenia od przymrozków późnych
    The vulnerability of silver fir populations to damage from late frosts
    Autorzy:
    Klisz, M.
    Jastrzebowski, S.
    Ukalska, J.
    Przybylski, P.
    Matras, J.
    Mionskowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/46004.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    jodla pospolita
    Abies alba
    selekcja
    drzewa potomne
    uszkodzenia przymrozkowe
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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