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Wyszukujesz frazę "Płatek, K." wg kryterium: Autor

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Występowanie larw, a liczebność motyli brudnicy mniszki (Lymantria monacha L.) w okresie międzygradacyjnym w drzewostanach sosnowych Nadleśnictwa Tuczno
    The abundances of the nun moth (Lymantria monacha L.) larvae and butterflies in the period between outbreaks in pine stands of the Tuczno Forest District
    Autorzy:
    Płatek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/973269.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    Lymantria monacha
    owady
    brudnica mniszka
    larwy
    szkodniki roślin
    okres międzygradacyjny
    leśnictwo
    Nadleśnictwo Tuczno
    liczebność
    lymantria monacha
    larvae
    imago
    Opis:
    A continuing threat of infestation to forest stands by the nun moth (Lymantria monacha) and difficulties in predicting the mass occurrence of this species necessitate precise analyses of the changes in the nun moth abundance over time and space. The paper provides a comparative analysis of the abundance of larvae and butterflies on the same control plots in the years 1996 – 2001. The observations demonstrated that the changes in the abundance of larvae and butterflies – males were directly proportional. A distinct difference was found only in 2001. Inspections indicated a relatively high number of larvae and a significant decline in the number of butterflies – males as compared with the previous year. Such differences in the abundance of these two developmental stages may have resulted from the high mortality of individuals during their development and give a picture of different development of this foliophage population.
    Źródło:
    Sylwan; 2003, 147, 04; 71-77
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zróżnicowanie zagęszczenia gąsienic brudnicy mniszki (Lymantria monacha L.) w drzewostanach sosnowych Nadleśnictwa Tuczno, w latach 1996-2003
    Variability of population density of the nun moth [Lymantria monacha L.] larvae in the Tuczno Forest Distric in the years 1996-2003
    Autorzy:
    Płatek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1015778.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    wystepowanie
    Lymantria monacha
    szkodniki roslin
    brudnica mniszka
    gasienice
    lesnictwo
    Nadlesnictwo Tuczno
    zageszczenie populacji
    nun moth
    larvae
    density of population
    Opis:
    The knowledge on the spatial distribution of pine foliophagous insect populations can be very useful in forecasting and prevention of their mass outbreaks. Checks of the quantities of fallen excrements were considered one of the reliable methods to detect the distribution of larvae in stands. Such checks oriented, in the first place, on the nun moth were performed in the years 1996−2003. The results showed high differences in the density of larvae even over a small forest area. The presence of such stand fragments where the high densities of larvae occurred more frequently than in other stand fragments were confirmed. In the same forest areas, higher densities of larvae of other foliophagous species of pine were also ascertained.
    Źródło:
    Sylwan; 2007, 151, 09; 57-65
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka rozwoju lokalnej populacji zawisaka borowca (Hyloicus pinastri L.) na podstawie występowania larw w latach 1996−2002
    Characteristic of the local development of the Hyloicus pinastri L. population on the basis of the occurrence of larvae in the period 1996−2002
    Autorzy:
    Płatek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026611.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    foliofagi
    wystepowanie
    Sphinx pinastri
    szkodniki roslin
    zawisak borowiec
    populacje zwierzat
    lesnictwo
    larwy
    foliophages
    hyloicus pinastri
    larvae
    population
    Opis:
    An increase in the abundance of local populations of Hyloicus pinastri L. Lepidoptera, Sphingidae is periodically recorded in many regions of Poland. In the Tuczno Forest District, the occurrences of larvae of this species have been monitored since 1996. The presence of larvae in tree crowns was established from the quantity of falling excrements. The account was taken of the percentage of colonised control trees and the mass of falling excrements. The abundance of larvae in the period of 1996−2002 varied. Since 2000, however, a distinct increase in the percentage of the colonised areas has been noted. In some years, this growth was accompanied by the decline in the amount of falling excrements in individual areas though the general tendency was rising. The likely cause of this decline could be a declining population density due to the expansion of Hyloicus pinastri on other fragments of stands. In 2002, the density of larvae the percentage of the colonised stands was high. This accounts for the dynamic population growth of Hyloicus pinastri in the study area.
    Źródło:
    Sylwan; 2003, 147, 08; 49-54
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena śmiertelności larw brudnicy mniszki (Lymantria monacha L.) w trakcie rozwoju larwalnego, w okresie międzygradacyjnym
    Autorzy:
    Płatek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1019741.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Lymantria monacha
    owady
    szkodniki roslin
    entomologia lesna
    brudnica mniszka
    okres miedzygradacyjny
    lesnictwo
    rozwoj owadow
    larwy
    pine foliophages
    lymantria monacha
    larvae
    development
    Opis:
    In 1996, the monitoring of the nun moth (Lymantria monacha L.) larvae in the period between outbreaks was carried out in the selected pine stands in the Tuczno Forest District. The presence of larvae in tree crowns were identifies on the basis of excrement fall. It has been demonstrated that at the early stage of development larvae were present nearly in every stand fragment. Small percentage of larvae that attained the pupa and imagine stage was presumably due to the high mortality during the developmental period. The complete development of larvae was found in some stand patches where feeding and developmental conditions possibly appeared to be relatively more favourable than in other stand patches.
    Źródło:
    Sylwan; 2005, 149, 07; 29-36
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka występowania larw boreczników (Diprionidae, Hym.) oraz zmian ich liczebności w okresie aktywności żerowej, na przykładzie wybranych drzewostanów Nadleśnictwa Tuczno
    Autorzy:
    Płatek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022538.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wystepowanie
    borecznikowate
    owady
    szkodniki roslin
    aktywnosc zerowania
    lesnictwo
    Diprionidae
    larwy
    liczebnosc
    pine foliophages
    diprionidae
    larvae
    population
    Opis:
    The paper presents monitoring results of sawfly (Diprionidae, Hym.) larvae occurrence and changes in abundance in the period of their feeding activity in different pine stands in the years between 2000 and 2002. The presence of larvae in tree crowns was established on the basis of counts of fallen excrements. The mass of fallen excrements and the number of excrement pellets accounted for great differences in abundance of larvae feeding in tree crowns among the successive years. Distinct periods of increased excrements fall were ascertained which corresponded to the peak of the abundance and activity of larvae. They occurred at different times in the successive years probably as a result of differences in the development pattern of two sawfly generations. In the case of high population abundance the excrements fall was more even, thus the limit between the end of the first and the beginning of the second development of the second sawfly generation was not distinct. Parts of stands where larvae were more abundant than in other fragments have been identified.
    Źródło:
    Sylwan; 2005, 149, 08; 39-48
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka zmian liczebności larw strzygoni choinówki (Panolis flammea Den. et Schiff.) na podstawie opadu ekskrementów, w wybranych drzewostanach Nadleśnictwa Tuczno, w latach 1999 - 2002
    Autorzy:
    Płatek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023369.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    zmiany liczebnosci
    drzewostany sosnowe
    szkodniki roslin
    Panolis flammea
    lesnictwo
    ekstrementy
    Nadlesnictwo Tuczno
    strzygonia choinowka
    larwy
    pine beauty moth panolis flammea
    population
    larvae
    frass
    Opis:
    This paper synthesizes results from the study on abundances of pine beauty moth (Panolis flammea Den. et Schiff.) larvae in selected stands of the Tuczno Forest District conducted in the years 1999−2002. Observation of frass fall onto dispensers set beneath tree crowns was the method to assess larvae abundance. The purpose was to assess the level of infestation of stands by larvae, as well as the rates of growth and development of larvae. Obtained results indicated the occurrence of pine beauty moth larvae almost in every fragment of the studied stands with densities of larvae in crowns changing from year to year. The year 2001 saw the greatest increase in larvae abundance. Observations showed that in 2001, the development and growth rates of larvae differed from those in 2002. The occurrence of larvae in centres, which is typical for the period between outbreaks, continued.
    Źródło:
    Sylwan; 2004, 148, 10; 48-58
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena występowania larw barczatki sosnówki (Dendrolimus pini L.) w latach 1999-2003, w drzewostanach Nadleśnictwa Tuczno
    Autorzy:
    Płatek, K.
    Sałek, P.
    Michalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1019728.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wystepowanie
    Dendrolimus pini
    owady
    szkodniki roslin
    barczatka sosnowka
    lesnictwo
    Nadlesnictwo Tuczno
    larwy
    foliophages
    larvae
    dendrolimus pini
    Opis:
    The pine lappet moth (Dendrolimus pini L.) has been present in Poland's forests since many years. In 1999−2002, a violent increase in population number of this pest was noted in many regions of the country. In that period the monitoring of pine lappet moth population was carried out also in the stands of the Tuczno Forest District. The presence and density of larvae in tree crowns was established on the basis of the counts of fallen excrements. Obtained results clearly point to a dynamic increase in number of larvae in tree crowns until 2002. The excrement fall control accounted for an increase in percentage of colonised stands on the one hand and a gradual increase in density of larvae in tree crowns on the other one.
    Źródło:
    Sylwan; 2005, 149, 07; 23-28
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czy żerowanie larw foliofagów sosny może mieć pozytywny wpływ na funkcjonowanie drzewostanów?
    Can the feeding of pine foliophages larvae have positive effect on the functioning of stands?
    Autorzy:
    Płatek, K.
    Michalski, A.
    Sałek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022928.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    foliofagi
    oddzialywanie na srodowisko
    owady
    szkodniki roslin
    drzewostany
    zerowanie
    lesnictwo
    pine foliophages
    larvae
    feeding
    biogenes
    Opis:
    Different foliophagous species are an inseparable element of forest biocoenoses. Besides damage to asimlatory apparatus of trees which has negative impact on stands the feeding of larvae also cause considerable fall of valuable organic matter onto the forest floor where it undergoes fast decomposition process thus having a positive effect on matter cycling in an ecosystem. Depending on larvae density in three crowns the mass of organic matter falling onto the forest floor can oscillate within wide limits. The decomposition of litterfall supplies the soil with valuable biogenes and microelements. In this situation there appears a "fertiliser effect" advantageous for stands at a simulataneous insignificant loss in assimilatory apparatus.
    Źródło:
    Sylwan; 2005, 149, 09; 44-50
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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