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Wyszukujesz frazę "Species richness" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Cyanobacteria microflora in a limestone spring (Troniny spring, Central Poland)
Autorzy:
Nowicka-Krawczyk, P.B.
Zelazna-Wieczorek, J.
Powiązania:
https://bibliotekanauki.pl/articles/57145.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Cyanoprokaryota
microflora
species composition
species richness
limestone spring
crenobiont
Troniny village
Central Poland
Opis:
The paper reports a study of cyanobacterial diversity in a cold-water limestone limnocrene in Central Poland. Samples were collected from 1998 to 2000 and in June 2012. The morphology, population characteristics and species composition of the cyanobacteria assemblages were investigated, and the frequency of taxa was recorded. The large number of taxa identified (30) reflects the microhabitat heterogeneity of this spring. Some species considered epiphytes grew on limestone rocks. The occurrence of the majority of the most frequent taxa was related to the physicochemical characteristics of the spring, but none of them can be considered obligatory crenobionts characteristic of limestone springs. The studied spring is a unique ecosystem with an interesting cyanobacteria microflora whose occurrence is attributable to the spring’s water chemistry, low temperature and variety of microhabitats.
Źródło:
Acta Societatis Botanicorum Poloniae; 2013, 82, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The species richness of the flora of selected sections of the Mietiułka River in the Polesie National Park
Bogactwo gatunkowe flory wybranych fragmentów rzeki Mietiułki w Poleskim Parku Narodowym
Autorzy:
Pogorzelec, M.
Powiązania:
https://bibliotekanauki.pl/articles/28606.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
vascular flora
species richness
flora
Mietiulka River
Polesie National Park
watercourse
species composition
species list
Opis:
The aim of the study was to conduct an environmental evaluation of 6 selected sections of the improved Mietiułka River, which included an inventory and analysis of the vascular flora associated directly with this watercourse. The results of the study have shown that the flora of the study area is diverse in taxonomic, syntaxonomic and ecological terms, and that it comprises both typical aquatic plants and species characteristic of the habitats surrounding the river. In the flora found in the study sectors, a total of 114 vascular plant species was identified, which come from 42 botanical families, 15 syntaxonomic classes and belong to different ecological groups. Hemicryptophytes, spontaneophytes, species neutral to continentality as well as species included in the phytochorion with boreal elements: Euro-Siberian subelement, were clearly predominant in the species composition of the flora of all the study sectors. The macrophytes commonly found in Poland had the largest proportion. One species with a small number of stands in the country – water dropwort (Oenanthe fistulosa) – as well as two species threatened with extinction, Sagittaria sagittifolia and Hypochoeris glabra, were recorded.
Źródło:
Acta Agrobotanica; 2010, 63, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diversity of aquatic malacofauna of temporary water bodies within the lower Bug River floodplain
Autorzy:
Jurkiewicz-Karnkowska, E.
Powiązania:
https://bibliotekanauki.pl/articles/83766.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Tematy:
diversity
aquatic malacofauna
malacofauna
temporary water body
water body
Bug River
flood plain
mollusc
aquatic mollusc zob.water mollusc
gastropod
water mollusc
species composition
species richness
Polska
species list
occurrence
Opis:
This study analyses the composition, species richness and diversity (H’) of aquatic molluscan communities in temporary water bodies within the valley of the lower Bug River in eastern Poland. The investigations were carried out in 2007–2009 within the section of the valley located between 190th and 50th km of the river course in 50 water bodies. Relatively rich and diverse malacofauna was found in the investigated habitats: 32 snail species and 6 bivalve species. Species diversity (H’) in individual water bodies ranged from 0.44 to 3.48. About 40% of all mollusc species showed frequencies of _10%. Dominance patterns varied much among the water bodies. Mollusc abundance ranged from 20 to over 1,800 indiv./m2. Considerable species richness and diversity were found both within the active floodplain and the former one. This was probably related to the long duration of many of the investigated water bodies, as well as their periodical hydrological connectivity with permanent ones or river channel. From 9 to 12 samples should be enough to compile representative species list of molluscs inhabiting temporary water bodies, but as many as 28–40 samples would be necessary to obtain complete dataset.
Źródło:
Folia Malacologica; 2011, 19, 1
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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