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Wyświetlanie 1-3 z 3
Tytuł:
Nitella opaca [Bruzelius] Agardh [Characeae] w Wielkopolsce
Autorzy:
Gabka, M
Pelechaty, M.
Pukacz, A.
Powiązania:
https://bibliotekanauki.pl/articles/878202.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
Wielkopolska
ramienice
wystepowanie
gatunki zagrozone
glony
Characeae
Nitella opaca
nowe stanowiska
Opis:
This paper presents historical and new localities of Nitella opaca, a rare charophyte species whose distribution in the light of published data and herbarium material was restricted to a few localities in the Wielkopolska region. The basic information on the species ecology and detailed characteristics of phytocoenotic interrelation are provided. So far, the occurrence of Nitelletum opacae in the Wielkopolska region has not been reported.
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika; 2003, 06; 33-38
1508-9193
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transformation and simplification of aquatic vegetation structure and reoligotrophication of a lake during the last 40 years
Autorzy:
Brzozowski, M.
Pelechata, A.
Kaczmarek, L.
Pelechaty, M.
Powiązania:
https://bibliotekanauki.pl/articles/2130559.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
aquatic vegetation
vascular plants
charophytes
Chara-lake
water fertility
Lychnothamnus barbatus
Nitellopsis obtusa
Opis:
The recovery or reconstruction of aquatic vegetation has recently been reported as a result of water quality improvement aer anthropogenic eutrophication. The objectives of this study were: to investigate long-term trends in aquatic vegetation abundance in relation to decreasing water fertility and to present new directions in changes of the submerged aquatic vegetation structure, species richness, and biodiversity in Lake Kuźnickie (western Poland) with the perspective of the last 40 years (1978–2018). Lake Kuźnickie is an example of water quality improvement taking place without any additional reclamation measures, except a reduction in nutrient discharge into the lake from its direct catchment. Currently, the study lake represents a mesotrophic status. The Trophy State Index evidenced a decrease in the lake’s fertility compared to previous decades. The water quality improvement manifests in a significant reduction in the total phosphorus concentration. An analysis of the spatial changes in the phytolittoral evidenced a decrease in rush vegetation between 1978 and 2018 by over 2 ha. In the period 1978–2018, the aquatic vegetation structure in Lake Kuźnickie underwent significant reconstruction. Currently, charophytes play a much greater role in the lake compared to the last 40 years, contributing to the maintenance of the lake’s high water quality. Moreover, the endangered charophyte Lychnothamnus barbatus has recovered. Concurrently, however, the biodiversity and species richness of the submerged vegetation has decreased. At present, only four species dominate in the lake, including two charophytes L. barbatus, Nitellopsis obtusa, and two vascular plants Ceratophyllum demersum and Myriophyllum spicatum. Over 40 years, Lake Kuźnickie has changed from a eutrophic lake dominated by vascular plants to a mesotrophic lake with a codominant contribution by charophytes. The lake is characterized by good water quality, optimal for the development of aquatic vegetation, especially charophytes.
Źródło:
Acta Societatis Botanicorum Poloniae; 2021, 90
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New records of Chara connivens P. Salzmann ex A. Braun 1835 - an extremely rare and protected species in Polish brackish waters
Autorzy:
Brzeska, P.
Wozniczka, A.
Pelechaty, M.
Blindow, I.
Powiązania:
https://bibliotekanauki.pl/articles/56909.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
new record
Chara connivens
extremely rare species
rare species
protected species
Polska
brackish water
Vistula Lagoon
Szczecin Lagoon
baltic Sea
Opis:
The stonewort Chara connivens was rediscovered in the Vistula Lagoon in 2011, almost 35 years after its last record. In 2012, the species was recorded for the first time in the Szczecin Lagoon. Chara connivens occurred at shallow (0.5–1.2 m) sandy-muddy and muddy bottoms of small embayments. In the Vistula Lagoon, the stonewort was represented by single small specimens, while in the Szczecin Lagoon, it formed dense and extensive patches.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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