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    Wyświetlanie 1-7 z 7
    Tytuł:
    Forest site conditions and the threat for insect outbreaks in the Scots pine stands of Polissya
    Autorzy:
    Andreieva, Olena
    Goychuk, Anatoliy
    Powiązania:
    https://bibliotekanauki.pl/articles/2041502.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    bark beetles
    foliage browsing insects
    hygrotop
    trophotop
    Opis:
    Scots pine (Pinus sylvestris L.) is the most spread forest tree species in Polissya and the most damaged by foliage browsing and stem insects. The aim of this study was to reveal the changes in the distribution of different forest site conditions for 2010–2019 in Scots pine forests of the selected forestry enterprises of Polissya and possible consequences for the spread of foliage browsing insects. Database of Production Association ‘Ukrderzhlisproekt’ (by 2010 and 2019) was analysed for five State Forest Enterprises (FE) that are located in the Central (Zhytomyr Region) and Western (Rivne and Volyn Regions) Polissya, where the large scale outbreaks of stem pests were registered last decade. The types of forest site conditions were designated in accordance with the Ukrainian typology. Distribution of the forest area by trophotops and hygrotops was evaluated for the forest-covered area, for Scots pine stands, and for pure Scots pine stands in 2010 and in 2019. For 2010–2019, the area of all Scots pine forests and its proportion in the forest-covered area has significantly decreased in the most of analysed forest enterprises. The change for 2010–2019 in the distribution both by the trophotops and by hygrotops of the entire forest-covered area, the area of all Scots pine forests and pure pine forests is not statistically significant. However, in assessment year 2019, the proportion of stands in the moist types of forest site conditions slightly increased. It may be the result of the stands’ mortality in the driest sites after an outbreak of bark beetles. A greater decrease in the proportion of Scots pine forest area in the dry poor, fresh poor, and dry relatively poor forest site conditions was found in the western direction. Therefore, the noted decrease in the foci areas of foliage browsing insects in Polissya in 2010–2012 compared to the 2000–2002 could be associated with a decrease in the most preferred stands, namely the poorest and driest types of forest site conditions.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 4; 270-278
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ cech drzewostanu i siedliska na występowanie borecznika sosnowca Diprion pini L. oraz borecznika zielonożółtego Gilpinia virens (Klug) (Hymenoptera, Diprionidae) na wybranych obszarach północnej Polski
    The influence of stand and habitat characteristics on the occurrence of pine sawflies Diprion pini L. and Gilpinia virens (Klug) (Hymenoptera, Diprionidae) in selected areas of northern Poland
    Autorzy:
    Gaweda, P.
    Grodzki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2142637.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    defoliating insects
    Pinus sylvestris
    outbreaks
    environmental requirements
    owady liściożerne
    gradacje
    wymagania środowiskowe
    Opis:
    Pine sawflies (Hymenoptera: Diprionidae) belong to the most common pests of Scots pine Pinus sylvestris L. in the area of the Regional Directorates of State Forests in Toruń and Gdańsk. The two most destructive species, Diprion pini L. in the area of Puszcza Bydgoska and Gilpinia virens (Klug) in Bory Tucholskie, were investigated in this study. Our main aim was to characterize the two species in the Bydgoszcz Forest District in RDSF in Toruń and Kaliska in RDSF in Gdańsk, respectively, based on data gathered during outbreaks between 1991 and 2011. For this purpose, a geometric database was created, containing information about the year of outbreak, number of larvae ob- served after tree felling as well as selected stand and site features including stand age and species composition, stocking index, canopy closure, site index, humidity and fertility. By analyzing the occurrence of both species in relation to stand and site features, we were able to determine their environ- mental requirements, which are quite different from one another. D. pini preferred older stands, with a stocking index between 0.8–0.9, growing on fresh and dry coniferous sites, while species composition (share of pine), canopy closure or site index did not have any influence on its abundance. G. virens preferred middle-aged pure pine stands, with relatively open canopies, on fresh coniferous sites and poorer soils. The stocking index did not affect its occurrence.
    Źródło:
    Leśne Prace Badawcze; 2020, 81, 3; 99-106
    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:
    Owady minujące liście dębu szypułkowego Quercus robur L. w Bydgoszczy i okolicach
    Insects mining leaves of English oak Quercus robur L. in Bydgoszcz and its vicinity
    Autorzy:
    Wrzesińska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1293840.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    drzewa
    dab szypulkowy
    Quercus robur
    szkodniki roslin
    owady minujace
    wykaz gatunkow
    wystepowanie
    miasta
    Bydgoszcz
    okolice Bydgoszczy
    English oak
    mining insects
    Tischeria ekebladella
    Phyllonorycter heegeriella
    Opis:
    This research on the occurrence of insects mining leaves of the English oak Quercus robur was performed between 2011–2012 in Bydgoszcz and in nine neighbouring sites: seven in forest areas and two in an urbanized environment. The analysis of the gathered material revealed the occurrence of insects from three different orders, Coleoptera, Hymenoptera and Lepidoptera, and 10 families: Curculionidae, Tenthredinidae, Bucculatricidae, Coleophoridae, Eriocraniidae, Gracillariidae, Heliozelidae, Incurvariidae, Nepticulidae and Tischeriidae. In total, 21 insect species were collected from Q. robur; most of them at forest sites. A slightly lower number of species was recorded at Janowo, where oaks were growing on the edge of the forest in the vicinity of a transport route with heavy traffic. Even fewer taxa were observed in the vicinity of urbanised areas; in the city park on the Bydgoszcz Canal and in Fordon. The most abundant species on the English oak were Tischeria ekebladella (Bjerk.) and Phyllonorycter heegeriella (Zell.).
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chrząszcze saproksyliczne (Coleoptera) obszaru ochrony ścisłej Bukowa Góra w Roztoczańskim Parku Narodowym
    Saproxylic beetles (Coleoptera) of the strictly protected area Bukowa Gora in the Roztoczanski National Park
    Autorzy:
    Papis, M.
    Mokrzycki, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311419.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    entomologia lesna
    chrzaszcze saproksyliczne
    wystepowanie
    wykaz gatunkow
    buczyna karpacka
    drewno martwe
    Roztoczanski Park Narodowy
    obszary ochrony scislej
    rezerwat Bukowa Gora
    beech
    fir
    insects
    Polska
    Opis:
    The aims of this study were to demonstrate the role of forests in the Roztoczański National Park as a refuge for rare and endangered saproxylic Coleoptera as well as recognition of entomological fauna related to dead wood. The study was conducted in the strictly protected are of Bukowa Góra from 20th April to 30th September 2012 and focused on the wood of beech and fir. We inventoried saproxylic beetles by means of nine ‘Netocia’ traps, which resulted in a total of 135 recorded species, of which 52 had not been reported in the park before. Twenty-one rare and endangered species were found. The high number of new species in the Roztoczański National Park indicates a high biodiversity value of the area. Our studies therefore show that the strictly protected area of Bukowa Góra is a biodiversity hot spot of saproxylic Coleoptera.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 3; 229-239
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chrząszcze (Coleoptera) występujące w próchnie brzóz (Betula spp.) na terenie Kampinoskiego Parku Narodowego
    Beetles (Coleoptera) occurring in decaying birch (Betula spp.) wood in the Kampinos National Park
    Autorzy:
    Sawoniewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318231.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    parki narodowe
    Kampinoski Park Narodowy
    siedliska lesne
    drzewa lesne
    brzoza
    Betula
    drzewa martwe
    owady saproksyliczne
    chrzaszcze
    Coleoptera
    sklad gatunkowy
    struktura zgrupowan
    forest type
    saproxylic insects
    Kampinos National Park
    Opis:
    The composition and structure of beetle clusters living in rotting birch wood in Kampinos National Park was investigated. Photoeclectors were used to remove beetles from collected wood samples. Ten different research plots, each corresponding to a different forest type, were sampled every month over a 1-year period. A collection of 3256 beetles from 37 families comprising 206 species was amassed during the study. The collected beetles were divided into trophic families, species rareness, and constancy and site fidelity classes. At the more fertile sites, species only able to live on highly-decayed wood were collected (F3), also species facultatively able to live on either dying trees or decaying wood (F1), species that do not live on decayed wood (F0) and other rare species. Trophic group of carnivores (Z) provided most species on more fertile sites. At coniferous forest sites, as well as mixed deciduous forest sites, most individuals collected belonged to mycophagous and myxomycophagous trophic groups. At the other sites, the largest group of collected individuals was zoophagous. The number of rare species was positively related to site fertility. The average number of species increased in accordance with increasing site fertility, however this trend was only statistically significant when applied to moist coniferous forest (Bw) and moist mixed broadleaved forest (LMw) sites. The study revealed differences in the composition and structure of beetle clusters from different forest types. These differences were probably not directly related to site type, but more likely to the form of nature conservation imposed on a particular area and the potential number of decayed deciduous tree trunks. Two different clusters of saproxylic Coleoptera related to birch rot were distinguished: the first includes strictly protected deciduous forest types, the second contains the remaining forest types.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 1; 71-85
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena stopnia uszkodzenia liści drzewostanów dębowych Nadleśnictwa Wołów dotkniętych klęską powodzi
    Assessment of leaf damage in oak stands in the flood-affected Wolow Forest Division
    Autorzy:
    Kuzmiński, R.
    Szewczyk, W.
    Korczyński, I.
    Łakomy, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311485.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    tereny pokleskowe
    tereny popowodziowe
    drzewostany debowe
    drzewa lesne
    dab
    Quercus
    defoliacja
    liscie
    uszkodzenia lisci
    szkodniki roslin
    owady
    Nadlesnictwo Wolow
    flood
    defoliation
    Wołów Forest Division
    oak die-back
    pest insects
    oak stands
    Opis:
    This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean damage to the carbon assimilating organs of stands with stagnating water was lowered by approximately 6% compared to stands that were not affected by flood. Thus, no definite effect of flood contributing to losses of carbon assimilating organs in oak trees could be shown.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 3; 297-303
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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