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    Tytuł:
    Liczebność i rozmieszczenie głuszca w Polsce w XXI wieku
    Population size and distribution of the capercaillie in Poland in the 21st century
    Autorzy:
    Zawadzka, D.
    Żurek, Z.
    Armatys, P.
    Stachyra, P.
    Szewczyk, P.
    Korga, M.
    Merta, D.
    Kobielski, J.
    Kmieć, M.
    Pregler, B.
    Krzan, P.
    Rzońca, Z.
    Zawadzki, G.
    Zawadzki, J.
    Sołtys, B.
    Bielański, J.
    Czaja, J.
    Flis-Martyniuk, E.
    Wediuk, A.
    Rutkowski, R.
    Krzywiński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/980118.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lowiectwo
    ptaki lowne
    gatunki chronione
    gluszec
    Tetrao urogallus
    wystepowanie
    liczebnosc populacji
    rozmieszczenie przestrzenne
    Polska
    wiek XXI
    tetrao urogallus
    species distribution
    species abundance
    refuges
    poland
    Opis:
    The data on the distribution and number of the capercaillie Tetrao urogallus in Poland for the period from the end of the 20th century up to 2017−2018 is presented. The capercaillie is a sedentary forest grouse living in old mountain forests and within the boreal zone. Since more than a century, the decrease in the numbers of the species has been observed, interlinked with the extinction of isolated populations. Within the present borders of Poland, a 1925 questionnaire study noted 2200−2700 individuals. In the 1960s, the national population was estimated at 1700−2000 birds, living in five isolated populations. In 1985−1995, the population numbers of the capercaillie dropped to approx. 466−700 individuals in four regions, and in 2000 it was estimated at 470−570 birds. According to the results of the censuses performed in 2017−2018, the size of the capercaillie population risen to 523−631 individuals and 59−69 lekking grounds. Currently the capercaillie occurs in four isolated regions. These are the Western Carpathians (the Beskid Sądecki, Tatry, Gorce, Babia Góra, Beskid Żywiecki, and the Beskid Śląski ranges) where 284−326 individuals live and 35−41 leks are active. In the Solska and the Lasy Janowskie Forests (Lublin region), the population was estimated at 132−184 individuals and 12−13 lekking grounds. In the Augu− stów Forest (Podlasie region) 36−46 individuals and 5−7 leks were found. In the Bory Dolnośląskie Forest, where native capercaillies got extinct during the last decade, the reintroduction program resulted in the rebuilding of their 65−75 population (with 6−7 leks). The restitution of the species in the Piska Forest has begun. During the last 20 years, populations in the Carpathian national parks have been stable, although fluctuating in numbers. The increase in the number of individuals in the Augustów Forest as well as in the Sądecki and Beskid Śląski Mountains is an after−effect of the release of birds from breeding centers or translocations. In other strongholds, fluctuations or decreases have been recorded, including wisible in the Beskid Żywiecki Mountains.
    Źródło:
    Sylwan; 2019, 163, 09; 773-783
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bogactwo gatunkowe i liczebność fauny wielkiego miasta - przykład Warszawy
    Species richness and abundance of the fauna of a big city - case of Warsaw
    Autorzy:
    Luniak, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/1197944.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Przyrodników im. Kopernika
    Opis:
    A full (i.e. close to completion) list of fauna of any city, nowhere was assessed, mainly because taxonomic and ecological diversity of invertebrates is beyond practical possibilities to have cooperation in the given area of all specialists, which would be necessary for such a study. The most comprehensive studies of this kind, in comparison to fauna of the region, were carried out in Warsaw (Poland), and more recently in Łódź (Central Poland). Within administration area of Warsaw (492 km2), about 3,800 species of terrestrial invertebrates from above 90 families or orders were recorded together with about 320 vertebrate species. The complete list of the animal world of Warsaw is estimated to be about 6-7 thousand species. The species richness of the fauna in large (European) city is likely to comprise 5-10 thousand of species, but the present knowledge about urban invertebrate wildlife does not allow even a basic assessment to be made. The vertebrate fauna is known much better, its species richness is similar in European cities - about 300-400 species. Total number of animal species recorded in Warsaw (ca. 4,100) is about 12% of that indicated from the whole country (Poland). If only vertebrates (a relatively well studied group) are compared - the proportion is 48-50%. In almost all of taxa studied, the species richness decreased with increasing urbanization gradient. The number of invertebrate species recorded in the green suburbs of Warsaw was 57% of that recorded in comparable studies in the region, in urban parks - 31%, and in small green patches in the city centre - 14%. As concerns breeding birds - in Warsaw as a whole about 65% of the species were found in comparison to the region whilst in the inner city - about 37%. Studies on abundance of urban fauna in Warsaw indicated that 1 m2 of soil layer in city lawns contains on an average several tens of thousands of invertebrate individuals whilst 1 m2 of ground surface - several hundred of them. 1 m3 of the canopy of the park trees contains 2-3 thousand individuals with more than one hundred of them per sample of 100 leafs. The total population of the breeding avifauna of Warsaw was estimated to be 150-350 thousand pairs (breeding territories) i.e. ca. 300-700 pairs per km2. The average density of the bird population in the highly urbanized areas of inner Warsaw was 830-1590 pairs per 1 km2 in the breeding season, and 2.5-4.5 thousand individuals per 1 km2 in winter. This is similar to values reported from other European cities.
    Źródło:
    Kosmos; 2006, 55, 1; 45-52
    0023-4249
    Pojawia się w:
    Kosmos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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:
    Liczebność i skład gatunkowy koprofagicznych poświętników w cyklu odtworzeniowym drzewostanów sosnowych w Lasach Człuchowskich (Pojezierze Pomorskie)
    Abundance and species structure of dung beetles in the regeneration cycle of Scots pine stands in Czluchow Forest (Pomeranian Lake District)
    Autorzy:
    Byk, A.
    Rutkiewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/986688.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Lasy Czluchowskie
    drzewostany sosnowe
    rozwoj drzewostanu
    owady
    koprofagi
    zukowate
    Scarabaeidae
    Geotrupidae
    wystepowanie
    zgrupowania zwierzat
    liczebnosc
    sklad gatunkowy
    scarabaeoidea
    scarabaeidae
    geotrupidae
    community structure
    forest development
    Opis:
    The aim of the study was to analyse the changes in abundance and species composition of dung beetles (coprophagous Scarabaeoidea) inhabiting Scots pine stands in various stage of the development. Beetles were collected in baited traps in Człuchów Forest, Pomeranian Lake District (NW Paland). In total we collected 87,596 specimens representing 41 species (tab. 2). The structure of dung beetle communities inhabiting analysed Scots pine stands changes in the course of the forest developmental cycle. Lands adjoining to a forest, clear−cut areas and plantations are inhabited by heliophilous communities of dung beetles, with superdominant species Trypocopris vernalis and dominant species such as Anoplotrupes stercorosus, Aphodius pedellus, Euorodalus coenosus and Chilothorax distinctus (tab. 2, fig. 5a). Thicket stage, pole timber stage, and the mature stand are inhabited by umbrophilous dung beetle communities characteristic for pine stands, with superdominant species Anoplotrupes stercorosus and dominant species Trypocopris vernalis (tab. 2, fig. 5b). At thicket stage the number of dung beetles species is dramatically reduced in comparison to other developmental stages (fig. 3). Moreover, a fundamental change in species composition is observed.
    Źródło:
    Sylwan; 2017, 161, 09; 781-792
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czy zakładanie upraw dębowych metodą biologicznej racjonalizacji sprzyja zachowaniu leśnych zgrupowań skoczogonków (Collembola, Hexapoda)?
    Does alternative methods of oak plantations establishment create favourable conditions for forest collembolan assemblages (Collembola, Hexapoda)?
    Autorzy:
    Sławska, M.
    Sławski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/986682.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    uprawy lesne
    uprawy debowe
    zakladanie upraw lesnych
    prowadzenie upraw lesnych
    metody biologicznej racjonalizacji
    fauna glebowa
    zgrupowania zwierzat
    skoczogonki
    Collembola
    oak cultivation
    corridor and tree group methods
    soil fauna
    species richness
    abundance
    Opis:
    Alternative methods of oak cultivation aim at reducing the cost of establishment of young plantations and decrease in the expenditure on their tending. In these methods, the corridors consisting of oak seedlings planted in the rows or isolated groups of twenty six seedlings are enclosed by stripes or patches without intervention left for natural succession. The restriction in site preparation on these areas and spontaneous development of young generation of trees are assumed to create favourable conditions for many forest organisms and, in results, significantly improve biological diversity of the managed forests. The aim of the study was to recognize the response of forest collembolan assemblages on alternative methods of establishment of oak plantations. The study was performed in the Forest Experimental Station in Rogów (Central Poland). In a mature stand on moderately humid mixed deciduous forest site, on clear−cut and on oak young plantations made by corridor and tree groups methods, fifteen study plots were established. In case of young plantations, these plots encompassed both artificially planted corridors or tree groups and adjacent fragments of plantation left for natural succession. Soil samples were taken in June and September 2014 and, using a simplified Tullgren apparatus, 18 thousands of collembolan specimens belonging to 84 taxa were identified. Our study proved that clear−cut and site preparation by rotary tiller on moderately humid mixed deciduous forest had a negative impact on Collembola assemblages, because caused a reduction in species number and abundance. However, the establishment of oak plantations by alternative methods, consisting in abandonment an artificial planting on some patches of renewed plots, significantly mitigate negative effects of clear−cut and reforestation on collembolan assemblages. The species number and abundance of springtails on patches left for spontaneous succession were distinctly higher than in artificially planted corridors or groups of trees in case of all studied plantations. Furthermore, it seems that corridor method in oak plantations establishment is advantageous for forest springtails, because the number of specimens per square meter on corridor plantation was higher than in tree group method. The beneficial effect on soil fauna of alternative methods of oak cultivation described in this paper weighs in favour of their wider application in silviculture.
    Źródło:
    Sylwan; 2018, 162, 07; 580-589
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Goździk kosmaty Diathus armeria L. na Pogórzu Cieszyńskim (południowa Polska)
    Deptford pink Diathus armeria L. in the Cieszyn Foothills (southern Poland)
    Autorzy:
    Beczała, Tomasz
    Chmura, Damian
    Powiązania:
    https://bibliotekanauki.pl/articles/36078220.pdf
    Data publikacji:
    2024-06
    Wydawca:
    Uniwersytet Bielsko-Bialski
    Tematy:
    gatunek chroniony
    zasoby populacji
    stanowiska rzadkich gatunków roślin
    protected species
    abundance of population
    localities of rare plant species
    Opis:
    Deptford pink Dianthus armeria L. is a representative of Caryophyllaceae family. It is plant species that is strictly protected since 2014. In the local Red List for the Silesian Province it was considered an endangered species. During 2023-2024 fieldwork was done that aimed to update the list of the localities of this species in the Cieszyn Foothills region. The locality was marked on the map using methodological assumptions of Atlas of Distribution of Vascular Plants in Poland. The density of population was counted or estimated. As a result of the field studies in the study area 9 localities (a total of 17 local populations) of Dianthus armeria were found in grassland, meadow, fringe and ruderal communities. Totally 8 localities were new to this area. Only localities from Tuł Mt has been known earlier. There were also the highest abundance of population, estimated at 600-700 individuals but population contain several small populations that amounting from tens to several hundreds of plants. Two populations are in Cisownica village and they occupy slopes of two local mountains: Kopieniec Mt (475 m a.s.l.) and Malcowa Mt (510 m a.s.l.). In Cieszyn population grows close to the nature reserve “Kopce”, and ecological use are “Łąki na kopcach”. In Leszna Górna village populations occupy xerothermic grasslands. The other situation is Górki Wielkie where the species grows in ruderal habitats: levees along Brennica river and in the vicinity of market. The other human-made habitats which were grown by Dianthus armeria were found in Puńców. These ones were abandoned quarry of dolomites and the vicinity of sports field but close to the fring of oak-hornbeam forest. In general, the population in the Cieszyn Foothills, size ranged from a few individuals to approximately several hundred. The lack of accurate data from previous years does not allow to assess the dynamics of the distribution and abundance of this species. Based on the general trends of Dianthus armeria in Poland, the population status appears to be satisfactory.
    Źródło:
    Polish Journal of Materials and Environmental Engineering; 2024, 7(27); 56-62
    2720-1252
    Pojawia się w:
    Polish Journal of Materials and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wysoka liczebność pustułki Falco tinnunculus w Dolinie Mławki (Nizina Północnomazowiecka) w roku 2020
    High abundance of the common kestrel Falco tinnunculus in the Mławka valley (North Mazovian Lowland) in 2020
    Autorzy:
    Szczypiński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2090108.pdf
    Data publikacji:
    2021
    Wydawca:
    Mazowiecko-Świętokrzyskie Towarzystwo Ornitologiczne
    Tematy:
    breeding birds
    bird species survey
    Natura 2000 sites
    open landscape
    river valleys
    Opis:
    In 2020 a high breeding abundance of the Common Kestrel Falco tinnunculus was documented in the valley of the Mławka River in the North Mazovian Lowland. 35-36 breeding pairs were recorded on the 100 km2 area, of which 31 pairs were within the Natura 2000 SPA “Doliny Wkry i Mławki” (Fig.). Most of the occupied nests were located on poplars (Table). Broods of kestrels were also recorded in low-lying nests, which is less common in the country, of the Magpie Pica pica, built in shrubs of the grey willow Salix cinerea and common lilac Syringa vulgaris. Kestrels nested locally in loose clusters. In the vicinity of Proszkowo, 11 occupied nests were recorded on an area of 4 km2. A large number of nesting kestrels was probably the result of the high food abundance in the Mławka Valley in 2020.
    Źródło:
    Kulon; 2021, 26; 51-56
    1427-3098
    Pojawia się w:
    Kulon
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Awifauna lęgowa Parku im. Ks. Józefa Poniatowskiego w Łodzi w latach 1966-2009
    Breeding avifauna of Prince Joseph Poniatowski Park in Łódź in 1966-2009
    Autorzy:
    Janiszewski, Tomasz
    Markowski, Janusz
    Powiązania:
    https://bibliotekanauki.pl/articles/970745.pdf
    Data publikacji:
    2006
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    urban park
    breeding birds
    long-term changes
    breeding abundance
    species richness
    Łódź
    park miejski
    awifauna lęgowa
    wieloletnie zmiany
    liczebność
    bogactwo gatunkowe
    Opis:
    During 1966-2009, in 13 seasons, breeding avifauna were counted in Prince J. Poniatowski Park (Łódź). The increase of species richness from 25 (1966) to 35 species (2009) was observed. The species started to breed in the Park were: Mallard Anas plathyrynchos, Sparrowhawk Accipiter nisus, Coot Fulica alra, Wood Pigeon Columba palumbus, Thrush Nightingale Luscinia luscinia, Song Thrush Turdus philom elos, Nuthatch Sitta europaea, Hawfinch Coccothraustes coccothrausles, Goldfinch Carduelis carduelis, Serin Serrinus serinus. Some species disappeared as breeder: Cuckoo Cuculus canorus, Pied Wagtail Molacilla alba, Wood Warbler Phylloscopus sibilatrix, Willow Warbler Phylloscopus trochilus, Marsh Tit Poecile palustris. The significant increase of breeding pairs was observed for: Blackbird Turdus merula. Blackcap Sylvia atricapilla, Great Tit Parus major. Blue Tit Cyanistes caeivleus, Finch Fringilla coelebs.
    Źródło:
    Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2006, Supplementum; 133-150
    1730-2366
    2083-8484
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Biologica et Oecologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Awifauna wodno-błotna środkowej Wisły w okresie lęgowym: wpływ działalności człowieka na rozmieszczenie, liczebność i bogactwo gatunkowe
    Water and marsh birds of middle Vistula River during breeding season: the impact of human activities on the distribution, abundance and richness of species
    Autorzy:
    Bukaciński, Dariusz
    Bukacińska, Monika
    Buczyński, Arkadiusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1964491.pdf
    Data publikacji:
    2011-06-30
    Wydawca:
    Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
    Tematy:
    ptaki Wisły
    zagrożenia awifauny rzek
    regulacja rzek
    pobór kruszywa
    avifauna of vistula river
    threats for riparian birds
    river regulation
    gravel and sand mining
    Opis:
    The inventory of birds was conducted in the years 2005-2010 on the Vistula River section between Dęblin (388 km of the river) and Podwierzbie (435 km of the river). The study area includes a southern section of the European Ecological Natura 2000 Site in Poland PLB140004 „Middle Vistula River Valley” (IBA, PL083). In most areas the Vistula flows here within unregulated or relatively little modified riverbed, having features of natural, lowland, braided river. Sandy islands and braid bars within the main channel, steep banks, and old riparian afforestation create the unique breeding habitats of the Vistula River Valley. Especially the river channel habitats provide suitable breeding sites for many rare bird species, constituting some of them the key-breeding sites. There are, however, fragments of several kilometers, where people transformed the Vistula River in a more visible way (Table 1). These are, among others: an urban section within Dęblin boundaries (km 388-393 of the river), a fragment adjacent to Kozienice Power Plant (km 421-426), and the area, where since 2007 gravel for the industry has been mining from the river bottom (km 426-431). The aim of this inventory was the comparison of richness and abundance of breeding bird species associated directly with the river channel on fragments mentioned above. It will allow us to estimate soberly how very the intensity of human utilization of the river affects the distribution of avifauna of the Vistula, determining the richness and abundance of valuable and/or endangered species breeding in a given area.
    Źródło:
    Studia Ecologiae et Bioethicae; 2011, 9, 2; 67-86
    1733-1218
    Pojawia się w:
    Studia Ecologiae et Bioethicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania rozmieszczenia i liczebności drzewiastych inwazyjnych gatunków obcych (IGO) a czynna ochrona zagrożonych ekosystemów leśnych w Kampinoskim Parku Narodowym
    Research on distribution and abundance of invasive alien tree species (IAS) and active protection of endangered forest ecosystems in Kampinoski National Park
    Autorzy:
    Medrzycki, P.
    Otreba, A.
    Pabjanek, P.
    Brys, K.
    Panufnik-Medrzycka, D.
    Gwiazda, S.
    Anczarska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/880934.pdf
    Data publikacji:
    2007
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
    Tematy:
    parki narodowe
    Kampinoski Park Narodowy
    rosliny
    gatunki obce
    gatunki inwazyjne
    czeremcha amerykanska
    Prunus serotina
    wystepowanie
    rozmieszczenie przestrzenne
    liczebnosc
    ekosystemy lesne
    ochrona ekosystemow
    ochrona czynna
    Opis:
    Inwazyjne gatunki obce (IGO) stanowią w wielu regionach świata poważne zagrożenie dla różnorodności biologicznej. Rozprzestrzenianie się tych gatunków ma również miejsce w Kampinoskim Parku Narodowym. Operat Urządzeniowy BUL z 2002 r. wykazał istnienie kilku ognisk inwazji i wielu rozproszonych mniejszych stanowisk. W celu określenia skali tego zjawiska i opracowania strategii czynnej ochrony podjęto kilkuletnie badania rozmieszczenia, liczebności i ekologii populacji, badania wpływu na ekosystemy leśne oraz badania efektywności metod usuwania. Jak dotąd, w latach 2004 i 2006 prowadzono kartowanie metodą siatki kwadratów w dwóch stopniach dokładności: w kwadratach o boku 50 m i o boku 500 m. Wyniki kartowania wskazują, że rozprzestrzenienie i zagęszczenie niektórych gatunków jest większe niż wskazywały na to dane taksacyjne z 2002 r. Planuje się wykorzystanie wyników kartowania do sporządzenia mapy potencjalnych siedlisk, mapy łącznego wpływu gatunków inwazyjnych oraz innych map pomocnych w podejmowaniu decyzji w sprawie aktywnej ochrony.
    Invasive alien species are major threat to the biodiversity. They also spread in the Kampinoski National Park. Forest Inventory in 2002 revealed the existence of few large foci of Prunus serotina invasion, surrounded by many small ones. Two studies of spatial distribution and the abundance the most common IAS were conducted in 2004 and 2006, both using the rectangular plots of 50 x 50 m and 500 x 500 m size. First results indicate quite strong difference of the P.serotina area and suggest it was either underestimated or grew by 20% every two years since the forest inventory in 2002. When completed, the data on the distribution and abundance of IAS will be used to potential habitat modelling, global IAS impact assessment and cost estimation of different eradication measures.
    Źródło:
    Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2007, 09, 2-3[16] cz.1
    1509-1414
    Pojawia się w:
    Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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