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Wyszukujesz frazę "microhabitats" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Wykorzystanie mszaków i porostów w bioindykacyjnej ocenie pionowego zróżnicowania warunków mikrosiedliskowych ekosystemów leśnych na przykładzie wiatrołomów w Kampinoskim Parku Narodowym
Application of bryophytes and lichens in the bioindicative assessment of the vertical differentiation of forest ecosystem habitat conditions on the example of windthrowns in the Kampinos National Park
Autorzy:
Zaniewski, P.T.
Fojcik, B.
Tematy:
ecological indicator values
epiphytes
cryptogams
microhabitats
Pokaż więcej
Wydawca:
Polskie Towarzystwo Leśne
Powiązania:
https://bibliotekanauki.pl/articles/978890.pdf  Link otwiera się w nowym oknie
Opis:
Ecological indicator values (EIV) are a commonly used tool for assessing habitat conditions in various ecosystems. They are relatively rarely used for the analysis of epiphytic communities, which results from objective difficulties in the study of this group of organisms in full height gradient on settled trees. Windthrows provide a rare opportunity to fully analyse the biota diversity of epiphytic bryophytes and lichens. The aim of the study was to determine and compare the EIV variability for bryophytes and lichens in the vertical gradient, from terrestrial to different epiphytic exposures. The fieldworks were carried out on two windthrow areas in the Kampinos National Park (central Poland). A set of floristic lists was prepared within five distinguished parts of trees (trunk base, lower trunk, upper trunk, lower crown and upper crown) and three parts of their uproots (pit, bottom root plate and top root plate) for three species (oak, birch, pine). Ten individuals of each tree species were selected. The average values of five ecological indicator values (light, temperature, continentality, humidity and acidity) were calculated within the examined parts of trees and their uproots. The significance of differences between bryophyte and lichen EIV within same parts of trees and their uproots was checked using Wilcoxon paired test. The significance of differences of EIV calculated for bryophytes and lichens pulled together between distinguished tree and uproot parts were checked with Kruskal−Wallis or Mann−Whitney tests. Ordination of researched parts in terms of their EIV was carried out using NMDS method. The values of individual EIV obtained with the use of bryophytes and lichens for the examined parts of trees and their uproots differed significantly in most cases. The values of temperature and continentality in most cases were significantly higher for lichen, which may indicate the need for additional calibration of these indicators for these groups of organisms. The use of both groups of organisms in bioindication has increased the quantity and quality of available ecological information. The research confirmed the usefulness of ecological indicator values as a tool for analysing general habitat conditions in forest ecosystems.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Annales Zoologici, vol. 58, no 2
Species diversity of parasitengona terrestria (Acari: Actinotrichida: Prostigmata) in a habitat influenced by anthropopressure
Autorzy:
Łaydanowicz, Joanna
Mąkol, Joanna
Współwytwórcy:
Muzeum i Instytut Zoologii Polskiej Akademii Nauk
Wydawca:
Fundacja Natura optima dux
Natura optima dux Foundation
Powiązania:
Annales Zoologici
Opis:
Nazwy taksonów w jęz. łac.
Taxa in Latin
S. 303-309 ; 27 cm
Bibliogr. s. 308-309
Bibliogr. p. 308-309
P. 303-309 ; 27 cm
The fauna of terrestrial Parasitengona was studied in a human-transformed habitat, located on the Odra River shore in Wrocław agglomeration, and compared withthat observed in natural habitats. The anthropogenic influence did not markedly affect the species diversity due to the presence of microhabitats which created favourable conditions for the mites. Altogether 13 species, representing four families and constituting almost nine percent of the Polish fauna of Parasitengona terrestria, were found within the studied area of ca. 200 m2. Species composition, compared with that observed in undisturbed habitat, differed with respect to nine taxa. Data on biology and ecology of the examined taxa areprovided. The results of laboratory experiments allow for synonymization of Hauptmannia brevicollis Oudemans, 1910 with Abrolophus norvegicus (Thor, 1900)and Hauptmannia pseudolongicollis Haitlinger, 1987 with Abrolophus quisquiliarus (Hermann, 1804).
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Characteristiscs of resting sites of the European wildcat (Felis silvestris silvestris) in a context of the species ecology and conservation
Charakterystyka miejsc odpoczynku żbika europejskiego (Felis silvestris silvestris) w kontekście ekologii i ochrony gatunku
Autorzy:
Miller, Wojciech
Opis:
Celem niniejszej pracy było zbadanie preferencji siedliskowych żbików, w szczególności określenie, czy liczba elementów siedlisk w skali mikro, takich jak różnego rodzaju kryjówki i miejsca odpoczynku, różni się w obrębie centrów i zewnętrznych części areałów osobniczych żbików, co mogłoby być podstawą niektórych preferencji siedliskowych żbików. Badania prowadzono w Beskidzie Niskim w okolicy miejscowości Odrzechowa. Na podstawie danych uzyskanych z namierzania telemetrycznego określono areały osobnicze, a w ich obrębie wydzielono części wewnętrzne, koncentrujące większość ustalonych lokalizacji oraz zewnętrzne, obejmujące pozostałe fragmenty areałów. Następnie sprawdzano liczbę dostępnych kryjówek i miejsc odpoczynku, korzystając z wyznaczonych w tym celu powierzchni kołowych. Opisano 588 powierzchni kołowych na 6 różnych areałach i stwierdzono obecność 1274 kryjówek/miejsc odpoczynku. Najczęściej występującym elementem środowiska było martwe drewno (stwierdzone na 42,9% spośród badanych powierzchni kołowych), natomiast wykroty/wychodnie skalne nie były notowane. Analiza statystyczna wykazała istotne różnice w ilości dostępnych kryjówek (t = 6.616, p < 0,01) pomiędzy wewnętrznymi i zewnętrznymi częściami areałów, co wskazuje na fakt, iż dostępność kryjówek w siedliskach jest ważnym czynnikiem wchodzącym w zakres preferencji siedliskowych żbika europejskiego.
The aim of the thesis was to examine wildcats' habitat preferences, notably evaluating whether the number of habitats' elements in micro scale, such as shelters and resting sites, differs between central and external parts of individual acreage, what could be a basis for wildcats' habitat preferences. The research was conducted in Beskid Niski, near Odrzechowa village. Individual acreages were evaluated on the basis of data acquired from telemetric tracking. Internal parts, assembling the majority of appointed localizations and external parts, comprising of the rest of acreages' fragments, were distinguished within individual acreages. Next, shelters and resting sites were counted, using appointed circular surfaces. 588 circular surfaces were described in 6 different acreages. In total, 1274 shelters/resting sites were noted. The most frequent element in the environment was coarse woody debris (noted in 42,9% of researched circular surfaces), while windthrows/outcrops were not recorded. Statistical analysis showed significant differences in number of available shelters (t = 6.616, p < 0,01) between internal and external parts of acreages, what proves that the accessibility of shelters in habitats makes up an important factor, included in range of European wildcat's habitat preferences.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Mite fauna (Parasitiformes: Gamasida) associated with nests of selected species of native bumblebees (Hymenoptera: Apidae: Bombus spp.)
Autorzy:
Witaliński, Wojciech
Celary, Waldemar
Rożej-Pabijan, Elżbieta
Wydawca:
Koliber
Opis:
Bumblebee nests are annual microhabitats that can be attractive for various microarthropods including mites. Bumblebee nests ensure a stable microclimate, food and possibility to spread to new habitat with adult bumblebees.The fauna of Gamasida mites inhabiting wild bumblebee nests is almost unknown - mite species associated with wild bumblebees have been described only based on phoretic forms collected from foraging individuals. This study was conducted on three bumblebee nests of three different bumblebee species: Bombus hortorum (Linnaeus, 1761), Bombus ruderarius (Muller, 1776) and Bombus pascuorum (Scopoli, 1763). The mite species composition and abundance were determined from a total of 355 mites. Nine mite species was Leiodinychus orbicularis (C.L. Koch, 1839) (Trematuridae). The second most numerous was Dinychus woelkei Hirschmann & Zirngiebl-Nicol, 1969 (Dinychidae). Representatives of families Laelapidae and Parasitidae were least numerous. Most of the identified mite species were at the deutonymphal developmental stage.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Acta Ornithologica, vol. 37, no. 2
Częstość występowania dziuplaków w naturalnych i zagospodarowanych lasach Zelandii (Dania) w okresie zimowym
Winter abundance of hole-nesting birds in natural and managed woods of Zealand (Denmark)
Autorzy:
Bursell, Jens
Współwytwórcy:
Polska Akademia Nauk. Muzeum i Instytut Zoologii
Wydawca:
Muzeum i Instytut Zoologii PAN
Powiązania:
Acta Ornithologica
Opis:
Bibliogr. p. 73
S. [67]-74 : il. ; 27 cm
Streszcz. pol. Nazwy taksonów także w jęz. łac.
Bibliogr. s. 73
Abstract in Polish. Taxa in Latin
P. [67]-74 : ill. ; 27 cm
Foraging observations (1 observation/bird) of tits and associated species were recorded during four winter months in two natural old-growth and two managed forests. The number of daily foraging observations was used as an index of bird abundance. The daily mean number of foraging observations for Parus major, P. caeruleus, P. palustris, Sitta europea, Certhia familiaris and Dendrocopos major was significantly higher in natural old-growth vs managed forest [ratio 4.8:1 (all six species pooled) and ratios 3.1:1, 3.2:1, 4.7:1, 5.7:1, 7.4:1 and 4.7:1 for the above-mentioned species respectively]. As the larger dominant species has an advantage in competition for nest holes, we would expect these to exhibit the smallest abundance ratio skews. This was not, however, the case and consequently, the results of this study do not support the hypothesis that a lack of nest holes should be the primary limiting factor for hole nesting species in managed forests. It was found that the species showing the strongest preference for foraging on dead wood were the same that had the most pronounced density skew between forest types. This could indicate that the lack of food resulting from silvicultural practice could be very important as a limiting factor in managed forests. Analyses of the use of dead wood of different diameter and from different tree species indicate that forest birds exploit diverse types of dead wood. Partially decayed standing dead wood was the most important substrate for the majority of species.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
    Wyświetlanie 1-6 z 6

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