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Wyszukujesz frazę "microhabitat" wg kryterium: Temat


Tytuł:
Population dynamics of amoeboid protists in a tropical desert: seasonal changes and effects of vegetation and soil conditions
Autorzy:
Pérez-Juárez, Horacio
Serrano-Vázquez, Angélica
Lara, Enrique
Ximénez, Cecilia
Godínez-Alvarez, Héctor
Rodríguez-Zaragoza, Salvador
Eguiarte, Luis E.
Hernández Moreno, Mayra M.
Fernández, Leonardo D.
Rojas-Velázquez, Liliana
Morán, Patricia
Castillo, Mariela
Rivera Aguilar, Víctor M.
Tematy:
Heterolobosea
seasonal variation
soil microhabitat
soil protist
Tehuacán desert
Pokaż więcej
Data publikacji:
2018
Powiązania:
https://bibliotekanauki.pl/articles/52257794.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Protozoologica; 2018, 57, 4; 231-242
0065-1583
1689-0027
Pojawia się w:
Acta Protozoologica
Opis:
In arid environments, protist diversity is higher in soil covered by vegetation than in bare soil and is also likely to vary in line with the marked seasonal patterns; however, these patterns have not been explored in detail in arid zones. Herein, we used culture – and morphological-based approaches to describe patterns of amoeboid protist diversity in  vegetated and bare soil areas from the intertropical desert of Tehuacán, Mexico, during dry and wet seasons. Overall, 27 protist species belonging to Amoebozoa, Discoba and Rhizaria were retrieved using culture-dependent methods. Among the soil protist groups found, Discoba (principally represented by Heterolobosea) was always the most prevalent taxa. Protist diversity was different between soil with vegetation and bare soil, principally during the dry season. Moreover, the electrical conductivity and pH of the soil were correlated with the protist species during the wet season. Our results support the hypothesis that soil protist diversity patterns exhibit a seasonal variation between dry  and wet seasons. This seasonal variation likely relies on water availability, although the role of other environmental factors cannot be completely ruled out. In addition, the soils with vegetation could be a refuge for the amoeboid protists during the harsh soil conditions of dry seasons.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure and differentiation of the synanthropic flora of the botanical gardens in Poland
Autorzy:
Galera, H
Sudnik-Wojcikowska, B.
Tematy:
microhabitat
Polska
synanthropic flora
urban area
flora
botanical garden
Pokaż więcej
Data publikacji:
2004
Powiązania:
https://bibliotekanauki.pl/articles/57042.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Societatis Botanicorum Poloniae; 2004, 73, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Opis:
Floristic studies were carried out in eight botanical gardens in Poland in the years 1992-1999. It was demonstrated that the spontaneous synanthropic flora of the gardens consisted of 1092 taxa in the rank of a genus or lower, among which alien species constituted 55% of the flora studied. Ergasiophygophytes, of which the introduction is closely associated with the activities of the botanical gardens, dominated in the latter group of species. It appeared that the flora of the studied botanical gardens was rather similar. However, the structure of the flora of different spatial units (six types of microhabitats) distinguished in the particular gardens varied, which was associated with the various management practices. The flora of microhabitats identified in the gardens differed with respect to the number of taxa and spectra of geographical-historical groups of species and life forms. Ruderal sites, arable lands and roadsides supported the highest number of taxa (the flora of the above spatial units was represented by 646, 645 and 597 taxa, respectively). Moreover, they were characterized by a high proportion of annual plants in the flora (43, 38 and 34%, respectively) and by a relatively small representation of apophytes (39% in all the three types of microhabitats). The flora of wet areas and parks was, however, poor in species (154 and 403 species, respectively), but relatively rich in apophytes (72 and 55% of the flora, respectively) and with a low contribution of therophytes (19 and 20%, respectively). The present data were compared with the findings of other authors who investigated the synanthropic flora of cities in which the botanical gardens were located. The comparative analysis of the flora of Poznań and Łódź showed a great richness of species (in relation to size of the area studied) and a high incidence of aliens (especially those, which had not become established permanently) in the botanical gardens. However comparative studies of the flora of Warsaw and that of the two botanical gardens established in the city revealed that the proportion of alien species was lower in case of these gardens. In Warsaw the flora of areas, which had been managed in the same way as those of the botanical gardens, was also investigated. It was found that the botanical gardens in Warsaw were more similar to cemeteries with respect to the structure of flora than they were to the allotments. The present study showed that the high variability of flora within the particular gardens is attributed to the different ways the area is utilized.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Density of the slug Arion lusitanicus Mabille [Gastropoda: Pulmonata: Arionidae] in different microhabitats
Autorzy:
Kozlowski, J
Tematy:
Gastropoda
Podkarpacie Region
microhabitat
Arion lusitanicus
Arionidae
slug
density
Pulmonata
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Data publikacji:
2000
Powiązania:
https://bibliotekanauki.pl/articles/66415.pdf  Link otwiera się w nowym oknie
Źródło:
Journal of Plant Protection Research; 2000, 40, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Opis:
In the years 1997-1999, studies on the intensity of the slug Arion lusitanicus occurring in different microhabitats were carried out on the territory of Podkarpackie province. Observations were performed in the environments of vegetable gardens, arable fields and non-crop areas. The intensity of the slug occurrence varied greatly in arable crops of different plant species and in other microhabitats. Vegetable crops and areas adjacent to them were inhabited by the slug most numerously. Considerably less slugs occurred in agricultural plant crops.
W latach 1997-1999 na terenie województwa podkarpackiego przeprowadzono badania nad nasileniem występowania ślimaka Arion lusitanicus w różnych mikrosiedliskach. Obserwacje wykonano w środowiskach ogrodów, pól uprawnych oraz na terenach nieuprawnych. W miejscach licznej obecności ślimaka (uprawy roślin, parki, cmentarze, brzegi rzek, nieużytki, śmietniska) obserwowano jego zagęszczenia w przeliczeniu na m² powierzchni. Nasilenie występowania ślimaka było silnie zróżnicowane w uprawach różnych gatunków roślin oraz w innych mikrosiedliskach. Najliczniej zasiedlane przez ślimaka były uprawy warzyw i tereny do nich przyległe. Licznie zasiedlane były także uprawy kwiatów oraz bylin, łąki i zachwaszczone pola. Natomiast znacznie mniej ślimaków stwierdzono w uprawach roślin rolniczych.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Invertebrate and fish environmental preferences as the key factor for lowland riverbed biodiversity
Preferencje siedliskowe bezkręgowców i ryb jako kluczowy czynnik różnorodności przyrodniczej koryt niewielkich rzek nizinnych
Autorzy:
Oglecki, P.
Tematy:
invertebrate
fish
environmental preference
lowland riverbed
biodiversity
riverbed
microhabitat
ecological stability
Pokaż więcej
Data publikacji:
2008
Powiązania:
https://bibliotekanauki.pl/articles/81597.pdf  Link otwiera się w nowym oknie
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation; 2008, 40
0208-5771
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical properties and similarity of habitats of Utricularia species in Lower Silesia, Poland
Autorzy:
Kosiba, P
Tematy:
cluster analysis
habitat
microhabitat
chemical property
similarity
botany
water property
Utricularia
Pokaż więcej
Data publikacji:
2004
Powiązania:
https://bibliotekanauki.pl/articles/57236.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Societatis Botanicorum Poloniae; 2004, 73, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Opis:
The study object consisted of 28 microhabitats of five Utricularia species localized in the Province of Lower Silesia, Poland. The aim of the study was to analyse the chemical properties of water and to present the differentiation of microhabitats in respect of their chemism, i.e., whether there are differences between the microhabitats, and which of the Utricularia species show the highest tolerance to the chemical properties of water. Analysed were the contents of NO-2, NO-3, NH+4, PO-24, K+, Ca+2, Mg+2, Na+, Fe+3, SO-24, total hardness of water, organic substance, pH and trophicity of water. The differentiation of microhabitats of Utricularia intermedia and U. minor appeared to be small, but much higher in case of U. vulgaris, U. australis and U. ochroleuca. The similarity of microhabitats has been determined by cluster analysis. The tree plot showed the least similarity of U. minor and U. intermedia, which occupy an extreme position in relation to microhabitats of the remaining species. Such a grouping suggests that this species is clearly distinct because of its connection with water properties.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microhabitat distribution and coexistence of monogeneans parasitic fishes - a review
Autorzy:
Simkova, A.
Gelnar, M.
Tematy:
parasite
Oligonchoinea
microecology
fish
Polyonchoinea
microhabitat
parasitic fish
host fish
niche
helminth
coexistence
distribution
Pokaż więcej
Data publikacji:
1998
Powiązania:
https://bibliotekanauki.pl/articles/837494.pdf  Link otwiera się w nowym oknie
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gap regeneration in near-natural European beech forest stands in Central Bohemia - the role of heterogeneity and micro-habitat factors
Autorzy:
Bilek, L.
Remes, J.
Podrazsky, V.
Rozenbergar, D.
Diaci, J.
Zahradnik, D.
Tematy:
gap regeneration
natural regeneration
Europe
beech forest
Fagus sylvatica
competition
stand
Central Bohemian region
heterogeneity
microhabitat factor
Pokaż więcej
Data publikacji:
2014
Powiązania:
https://bibliotekanauki.pl/articles/41443.pdf  Link otwiera się w nowym oknie
Źródło:
Dendrobiology; 2014, 71
1641-1307
Pojawia się w:
Dendrobiology
Opis:
Gap regeneration in a European beech (Fagus sylvatica L.) forest reserve was analyzed in relation to within-gap resource heterogeneity and ground vegetation competition. The study was carried out in two one-hectare permanent research plots (PRP) which included five smaller research plots (RP) encompassing two large gaps (500–700 m2), two small gaps (300–400 m2), and location under canopy. The coverage of woody regeneration, ground vegetation, dead wood, seedling density in eight height classes, characteristics of dominant trees of the beech regeneration, and the total thickness of holorganic horizons were measured. Soil moisture and light conditions were also assessed in selected sample plots. The relative direct and diffuse light was estimated by hemispherical photography. Small gaps showed both the highest cover of tree regeneration and the highest density of individuals per hectare. Slightly less regeneration was recorded in large gaps, while under closed canopy, regeneration densities were 5–10 times lower than in small gaps. Beech regeneration cover and the size (diameter and height) of dominant beech seedlings were positively related to relative diffuse light and negatively related to ground vegetation cover. The latter was positively related to diffuse light and soil moisture content. A pronounced statistically significant contrast in the cover and size of beech regeneration in relation to micro-site conditions (diffuse light, cover of graminoids) was only confirmed between sample plots located below canopy cover and those within gaps. Graminoids, in particular Calamagrostis epigejos L., occurred mainly in the large gap centre and along the southernmost edge of the large gap, increasing competition for resources here. The cumulative cover of ground vegetation and regeneration was relatively low (9–56%) compared with more mesic natural beech forests. The indicated negative influence of direct light at the northern gap edge suggests that extension of gaps on comparable sites in managed forest should not proceed in this direction.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can snails run a fever?
Autorzy:
Zbikowska, E.
Wrotek, S.
Kozak, W.
Tematy:
snail
pathogen
invasion
body temperature
fever
microhabitat
behavioural fever
reptile
amphibian
fish
arthropod
annelid
molecular mechanism
homoiothermic animal
Pokaż więcej
Data publikacji:
2012
Powiązania:
https://bibliotekanauki.pl/articles/83928.pdf  Link otwiera się w nowym oknie
Źródło:
Folia Malacologica; 2012, 20, 1
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The floristic differentiation of microhabitats within kurgans in the desert steppe zone of Southern Ukraine
Autorzy:
Sudnik-Wojcikowska, B
Moysiyenko, I.I.
Tematy:
kurgan flora
plant ecology
floristic diversity
Kherson Region
botany
Ukraine
barrow flora
Pontic desert steppe zone
microhabitat
flora
Pokaż więcej
Data publikacji:
2008
Powiązania:
https://bibliotekanauki.pl/articles/58569.pdf  Link otwiera się w nowym oknie
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Opis:
Results of the studies on the floristic biodiversity of the kurgans in the Pontic desert steppe of the Black Sea Lowland (Kherson Region) are presented. Twenty-six of about 130 kurgans higher than 3 m, distributed over an area of approx. 1500 km2, were surveyed and the flora of 5 microhabitats within every kurgan (top, southern and northern slope, southern and northern foot) was examined. The richness of the kurgan flora is estimated at 305 species. Species of alien origin constituted 23% of the total flora, which indicates limited anthropogenic influence. Species of two classes, Festuco-Brometea and Stellarietea mediae were predominant, which also confirmed the semi-natural character of the kurgan flora. The lowest number of species was recorded on top, which was relatively rich in synanthropes, particularly therophytes (Stellarietea mediae). The north side was richer in species than the south side of the kurgans. Steppe species were the most stable and important component of the flora of the slopes (45-47% of the species represented the class Festuco-Brometea). The total flora of the foot contained more species and was more diversified than the flora of the slopes (although the mean number of species was similar in both habitats), but each species occurred at low frequency. There was a higher proportion of species which were introduced from the area surrounding the kurgans, e.g. weeds, halophytes, meadow species, as well as trees which are rarely found in the desert steppe zone. In spite of the small size of the kurgans, significant differences between the floristic composition of the various microhabitats were detected.
Dostawca treści:
Biblioteka Nauki
Artykuł

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