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    Wyświetlanie 1-7 z 7
    Tytuł:
    Wpływ głębokości zaburzenia na liczbę gatunków szkodników sosny pospolitej (Pinus sylvestris L.) oraz ich liczebność w borach północno-wschodniego Kazachstanu
    Influence of the disturbance depth on the number of Pinus sylvestris L. pest species and their abundance in the forests of north-eastern Kazakhstan
    Autorzy:
    Mussayeva, B.
    Mokrzycki, T.
    Sarsekova, D.
    Osserkhan, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/985749.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Kazachstan
    drzewostany sosnowe
    zagrozenia drzewostanow
    pozary lasow
    huragany
    drzewostany uszkodzone
    sosna zwyczajna
    Pinus sylvestris
    szkodniki roslin
    szkodniki pierwotne
    szkodniki wtorne
    wystepowanie
    primary insect pests
    secondary insect pests
    scots pine
    kazakhstan
    Opis:
    The research was carried out in the economic and natural Forest Reserve ‘Yertys Ormany’ in Pavlodarsk Oblast (Kazakhstan) in 2018. In the middle of May, two barrier traps of the ‘Netocia’ type (30, in total) were installed on each research plot damaged by wind, fire and great pine web – spinning pine sawfly – Acantholyda posticalis Mats. Insects were caught every month, from mid−June to mid−August. 1521 insects belonging to 67 species and 23 families were caught in the traps. Beetles clearly dominated. We also observed a great pine web and sirex woodwasp Sirex noctilio Fabr. Of the beetles caught, 10% were thermophilic jewel beetles or metallic wood−boring beetles Buprestidae, among which Chalcophora mariana (L.) dominated. The highest average number of individuals was observed on sites damaged by A. posticalis, however, differences between the plots turned to be insignificant. The highest significant average number of species was observed on sites damaged by the fire and by the wind. The GLM analysis indicated the highest mean values of the Margalef index in plots damaged by fire and by the wind, but did not show significant differences between the average values of the fidelity index of the assemblages. The research confirmed the hypothesis of a greater number of species and individuals, and a higher diversity of pests in pine stands more strongly disturbed (i.e. damaged by the fire and by the wind). At the same time, there were no differences between the most seriously disturbed variants.
    Źródło:
    Sylwan; 2019, 163, 12; 1035-1042
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potencjał nietoperzy w biologicznej ochronie lasu
    Bats as a potential biological pest control agent in forest
    Autorzy:
    Burgiell, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/985874.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    ochrona biologiczna
    nietoperze
    Chiroptera
    sklad pokarmu
    owady
    szkodniki roslin
    bats
    forest pests
    pest control
    forest protection
    Opis:
    Bats have a set of features that make them very effective insects predators, thus they can potentially play an important role as a biological pest control agent in forests. The active flight ability, nocturnal lifestyle, high level of metabolism and a lack of a significant threat from predators make bats the most important predators of insects active in the evening and at night. All bats species noted in Poland are associated with forests, where they use various microhabitats and forage on various types of prey. According to foraging strategy and diet, insect−eating bats have been divided into several ecomorphological groups, which shows different efficacy in foraging on particular species of forest insects pests. Numerous studies indicate that bats diet includes primary forest pests from order Lepidoptera and also some species from Diptera and Coleoptera. Forest pests from Lepidoptera and Diptera represent a significant share in the diet of gleaning bats, especially long eared bats Plecotus sp., barbastelle Barbastella barbastellus and Natterer’s bats Myotis nattererii. During the swarming period Melolonthinae sp. and Amphimallon sp. (Coleoptera) dominate in the diet of all larger species of bats, especially aerial hawkers and bats foraging along the linear elements in the landscape: serotine bat Eptesicus serotinus, commone noctule Nyctalus noctula, lesser noctule Nyctalus leisleri and mouse eared bat Myotis myotis (which forage mainly on ground beetles). Moreover many bat species are able to change diet and adapt it to the most abundant prey. According to forest protection, the most important guilds are gleaners, bats foraging in the dense vegetation and canopy and aerial hawkers. Bats have a great potential as a biological control agents and all conservation practices including this group of animals will simultaneously support the natural forest resistance mechanisms.
    Źródło:
    Sylwan; 2018, 162, 09; 707-717
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Współwystępowanie nicieni owadobójczych i szkodników drzew w zbiorowiskach leśnych w północnej Polsce
    Co-occurrence of entomopathogenic nematodes and tree pests in forest communities of northern Poland
    Autorzy:
    Dzięgielewska, M.
    Skwiercz, A.T.
    Powiązania:
    https://bibliotekanauki.pl/articles/985868.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    metody biologiczne
    nicienie owadobojcze
    Steinernematidae
    Heterorhabidtidae
    zywiciele potencjalni
    owady
    szkodniki roslin
    wspolwystepowanie
    steinernema
    heterorhabditis
    woodland
    insect pests
    host preference
    Opis:
    Repeating outbreaks of the Scots pine pests, effecting in stands damages, are the most important problems of forest protection. In extreme cases they pose a real threat to the stability of stands. Naturally occurring entomopathogenic nematodes are important regulatory factors in insect populations. Many species are employed as biological agents to control the insect pests. The objectives of this research was to describe the influence of potential forest pests on occurrence and abundance of entomopathogenic nematodes. Entomopathogenic nematodes (Steinernematidae and Heterorhabditidae) were studied in woodland soils in northern Poland. Soil samples were collected from 2010 to 2015 from coniferous forests with abundant suitable insect hosts: the beetle grubs of Melolontha melolontha L. living in the soil (Coleoptera: Scarabaeidae) and foliage feeders Diprionidae spp. (Hymenoptera) and the caterpillar of Dendrolimus pini L., Panolis flammea Den. et Schiff. and Bupalus piniarius L. butterflies. Nematodes occurred in all type of forest and 171 soil samples were taken from 40 localities. Each study plot was approximately 100 m2 and 20 cm deep; 50 individual samples were taken using Egner’s stick, making the bulk sample approximately 600 cm3 in volume. The presence of entomopathogenic nematodes in the soil samples were determined using a standard Galleria mellonella baiting technique. Entomopathogenic nematodes were isolated from 52 soil samples (30,4%). Three species of the genus Steinernema (Steinernema feltiae, S. affine, S. silvaticum) and anyone of the genus Heterorhabditis were recorded. S. feltiae was the most common species and distinguished by the largest ecological flexibility especially to hosts. The largest number of S. feltiae samples was isolated in the places of butterfly outbreak P. flammea and also in the places of mass occurrence of beetle grubs of M. melolontha. In the feeding places of beetle of Scarabaeidae a high share of S. affine was noted too. The more rarely noted was S. silvaticum especially in outbreak of Diprionidae spp. The most abundance of entomopathogenic nematodes community was 140 000 ind./m2 in sites with M. melolontha grubs.
    Źródło:
    Sylwan; 2018, 162, 12; 1007-1017
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozmieszczenie zimujących stadiów przedimaginalnych osnui gwiaździstej Acantholyda posticalis Mats. w drzewostanach sosnowych będących ogniskami gradacyjnymi szkodnika
    Distribution of wintering pre-imaginal stages of the great web-spinning pine sawfly Acantholyda posticalis Mats. in Scots pine stands being the outbreak centres
    Autorzy:
    Sławski, M.
    Mokrzycki, T.
    Perliński, S.
    Rutkiewicz, A.
    Sławska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/980205.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany sosnowe
    szkodniki roslin
    osnuja gwiazdzista
    Acantholyda posticalis
    larwy zimujace
    eonimfy
    pronimfy
    rozmieszczenie przestrzenne
    autumn survey
    scots pine pests
    eonymphae
    pronymphae
    abundance
    distribution variability
    Opis:
    Acantholyda posticalis Mats. for over twenty years increases the extent of occurrence and causes defoliation of Scots pine stands. The population size is estimated annually based on the autumn surveys of phytophagous insects, but accuracy of these prognoses is far from satisfactory. The aim of the study was to describe the spatial distribution of pre−imaginal stages of A. posticalis wintering in the litter and soil to improve the methods of survey currently applied in Polish forestry. The research was carried out in four forest district located in different regions of Poland. In each forest stand three following zones were outlined: the belt of trees on the edge of the stand adjoining to young plantation or thicket, the belt 15−20 m from the stand edge and the belt in the forest interior at least 30−40 m from the edge of a stand. 152 trees were examined and 1540 plots of size 1×0.5 m were established under their canopy. The pre−imaginal stages were searched within each of these plots in the litter and soil to the depth of 20 cm. Later on they were divided into eonymphae and pronymphae, and counted. The significant differences in number of pre−imaginal stages of A. posticalis between studied forest stands in different forest districts were found. The spatial distribution of larvae wintering in the litter and soil was highly variable in scale of both stand and single tree. The abundance of larvae depended on the distance from the forest edge, but the values of this parameter calculated for trees in the same zone also varied substantially. The lowest mean abundance of pre−imaginal stages of A. posticalis denoted under pines growing at the edges of trees stand. Within the canopy projection on forest floor, the distribution of larvae was significantly dependent on the distance from the tree trunk. The highest abundance was observed within one meter from the trunk. The survey method currently used for primary pine pest assessment in Polish forests bases on ten plots and five of them are located 1.5 m from the tree trunk. In the light of presented results, the assessment of A. posticalis number could be inaccurate, because half of these plots in which scrutiny of litter and soil take place, omit the areas of higher concentration of wintering stages of the pest.
    Źródło:
    Sylwan; 2019, 163, 07; 556-563
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model klasyfikacyjny prognozowania wystąpienia masowych szkód w uprawach leśnych od pędraków chrabąszczy (Melolontha Fabr.)
    Classification model for prediction of mass damage in young forest plantations caused by larvae of cockchafer (Melolontha Fabr.)
    Autorzy:
    Drozdowski, S.
    Jankowski, P.
    Byk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/993325.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    uprawy lesne
    szkodniki roslin
    chrabaszcz
    Melolontha
    pedraki
    szkody w lesie
    prognozowanie
    modele klasyfikacyjne
    melolontha
    logistic regression
    root pests
    young forest plantations
    Opis:
    Study presents a classification model for predicting the occurrence of mass damage in young forest plantations caused by insect pests on roots belonging to Melolontha genus. Logistic regression model was built on the basis of 10 taxation features describing 177 young stands. Habitat fertility, occurrence of Scots pine and European beech, and weed infestation of the habitat are the most significant features that influence mass occurrence of cockchafer larvae acting as insect pests on roots in plantations.
    Źródło:
    Sylwan; 2013, 157, 09; 678-685
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie klasycznej i obecnej metody prognozowania występowania pierwotnych szkodników sosny
    Comparison of classic and current method of forecasting the activity of primary pests of Scots pine
    Autorzy:
    Kozak, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009093.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    szkodniki roslin
    sosna zwyczajna
    Pinus sylvestris
    szkodniki pierwotne
    prognozowanie
    Instrukcja Ochrony Lasu
    metody badan
    metoda powierzchni czastkowych
    metoda klasyczna
    dokladnosc
    pracochlonnosc
    analiza porownawcza
    scots pine
    pests
    autumn search
    Opis:
    German (new) and classic methods of forecasting the activity of primary pests of Scots pine were described in terms of the most important criteria i.e. accuracy and laboriousness. Investigated methods of autumn search of pests did not differ in terms of analysed parameters.
    Źródło:
    Sylwan; 2010, 154, 10; 669-675
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ pokarmu na imagines chrabąszczy Melolontha melolontha i M. hippocastani
    Effects of food source quality on the adults of Melolontha melolontha and M. hippocastani
    Autorzy:
    Woreta, D.
    Lipiński, S.
    Wolski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1295010.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    entomologia lesna
    szkodniki roslin
    chrabaszcz majowy
    Melolontha melolontha
    chrabaszcz kasztanowiec
    Melolontha hippocastani
    owady dorosle
    przyrost masy ciala
    przezywalnosc
    dlugosc zycia
    plodnosc
    pokarm
    preferencje pokarmowe
    forest cockchafer
    common cockchafer
    forest pests
    relative growth rate
    mortality
    food quality
    Opis:
    This paper presents the results of studies on the life span, survival, weight and fecundity of the forest cockchafer (Melolontha hippocastani, Fabricius, 1801) and the common cockchafer (Melolontha melolontha, Linnaeus, 1758) beetle feeding on Alnus glutinosa (L.) Gaertn., Betula pendula Roth., Carpinus betulus L., Fagus sylvatica L., Larix decidua Mill., Prunus serotina (Ehr.) Borkh., Quercus petraea (Matt.) Liebl., Quercus robur L., Robinia pseudoacacia L., Sambucus nigra L. and Sorbus aucuparia L. em. Hedl. The lifespan and weight of beetles as well as female fertility were examined in 2011 and 2013. Specimen for laboratory tests were collected in the field shortly after leaving their overwintering sites in the soil and identical experimental protocols were applied to both examined species. 576 and 432 beetles were tested in 2011 and 2013, respectively. In 2011, beetles were feeding on A. glutinosa, B. pendula, F. sylvatica, L. decidua Q. petraea leaves and on C. betulus, P. serotina, R. pseudoacacia, S. aucuparia and S. nigra in 2013. Both years, beetles feeding on Q. robur leaves were examined as a control. Our results showed that feeding on leaves of Q. robur and Q. petraea had the largest positive impact on the life time, weight and fecundity of the studied beetles. Leaves of F. sylvatica and L. decidua also constituted an adequate food source for the development of M. melolontha. M. hippocastani, however, did not perform as well when feeding on these two tree species. Females of M. melolontha reared on leaves of B. pendula did not lay eggs. The following plant species had a negative impact on the survival and development of the collected specimen and female fertility: A. glutinosa, S. nigra, P. serotina and R. pseudoacacia. Neither beetle species fed on the leaves of A. glutinosa or S. nigra.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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