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Wyszukujesz frazę "Chara intermedia" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Charophytes (Characeae, Charophyta) of the Puszcza Zielonka Landscape Park in Poland: response to the protection and state of catchment areas of the water bodies
Autorzy:
Lisek, D.
Fonfara, P.
Gąbka, M.
Powiązania:
https://bibliotekanauki.pl/articles/2130305.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
Characeae
Chara
Nitella
Chara intermedia
lake
distribution
threatened and rare charophytes
catchment areas
Opis:
This paper presents localities of charophytes in the Puszcza Zielonka Landscape Park (Wielkopolska, Poland). In this area, 16 species of stoneworts occur, constituting 47% of national species from this group. The following are the most frequent species: Chara intermedia, C. tomentosa, C. virgata and Nitellopsis obtusa. Four critically endangered species in Poland (Nitella tenuissima, N. capillaris, N. gracilis and Chara tenuispina) were also recorded. Our research has demonstrated: (1) considerable diversity of charophytes on a relatively small area situated in the vicinity of a large urban centre of Poznań, (2) major importance of protected areas such as nature reserves, landscape parks, or Natura 2000 areas etc. for the preservation of charophyta lake habitats, and (3) the significance of the forms of land use in the catchment areas, where forest vegetation or less dense presence of trees and shrubs prevents eutrophication of the water bodies and thus contributes to the protection of the stonewort species occurring there.
Źródło:
Steciana; 2018, 22, 4; 153-160
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Germination of different gyrogonite types of Chara intermedia A. Braun 1836
Autorzy:
Budnyk, Ola
Sugier, Piotr
Cierech, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/763821.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
germination, morphological types of gyrogonites, Chara intermedia, postexcavation pit
Opis:
The paper presents the germination of different types of gyrogonites of Chara intermedia A. Braun 1836. The study material was collected from the surface layer of sediments (sediment gyrogonites) and from dead C. intermedia specimens inhabiting a post-excavation pit. As a result of a low level of water and seasonal drying, two morphological types of gyrogonites taken from the thallus were distinguished: fully ripe gyrogonites and gyrogonites in oosporangium remains. The highest germination rate was recorded for the sediment gyrogonites. At the end of the experiment, about 28% of germinating gyrogonites originating from sediments were observed. The value of this parameter was over 3-fold higher than that of fully ripe gyrogonites produced by the thallus and more than 5-fold higher in relation to gyrogonites in the oosporangium remains. The results of this experiment indicate that the germination of the two morphological types of gyrogonites taken from plants depends on the degree of their maturity and can take place under limited light conditions. Drying of charophyte thallus in shallow water bodies may have a significant impact on the degree of maturity of gyrogonites, their morphological differentiation, and sediment seed bank characteristics.
Źródło:
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2016, 71, 2
2083-3563
0066-2232
Pojawia się w:
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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