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A set of 18 freshwater and morphologically similar marine samples of Ulva were collected from inland and coastal waters throughout Europe to assess their taxonomic identity and invasive potential. An additional 11 specimens were obtained from herbaria. The material was studied using a combination of classical morphological methods and molecular techniques; the latter included sequencing of the nuclear...
Desmids (Desmidiaceae) belong to green algae, the second, in terms of the amount of taxa, class of algae. This class is considered to be the most diverse in terms of the size and the shape of cells and the organization of the thallus. Desmids are also a peculiar group of algae which settle mainly acidic, oligotrophic bog ecosystems. Only small group of taxa can also appear in eutrophic or mesotrophic...
This study contains results of the taxonomic analysis of green algae from
the ponds of the Załęczański Landscape Park. Application of the Thumarek’s eutrophy
coefficient enabled to mark off oligotrophical and eutrophical ponds on the researched area.
Results of observing morphological diversity of P. boryanum and
P. duplex occurring in samples from Pond Okręt are presented. The same teratological
forms that were collected in the water body in 1968-1969 continued to inhabit it
also after over a dozen years, in 1984-1987.
The study contains the descriptions of 14 taxons of the genus
Pediastrum occurring in the Łódź City and its vicinities. Observations were conducted
using a light and an electron scanning microscope, paying particular attention to the
sculpture of the cell wall of the investigated algae.
The article presents results of a taxonomic analysis
of the Desmidiales to be found on the area of the planned reservation in Rąbień. The studies carried out on this area in the
1982-1983 vegetation season revealed the presence of 93 algae species belong to the Desmidiales order.
Praca niniejsza dotyczy badań jakościowych i ilościowych prowadzonych
nad glonami z rodziny Desmidiaceae w latach 1978—1979 we wschodniej
części torfowiska Bagno Przerębiec, leżącego na terenie Kotliny Szczercowskiej.
Ogółem na badanym terenie stwierdzono występowanie 101 gatunków,
38 odmian i 11 form należących do 21 rodzajów (Arthrodesmus, Closterium,
Cosmarium, CyJindrocystis, Desmidium, Euastrum,...
W próbach pobranych z torfowiska w Magdalenowie (woj. piotrkowskie)
zidentyfikowano 248 taksonów okrzemek (tab. 3). Nowym gatunkiem dla flory
Polski jest Asterionella fibula (Bréb.) Hust. (rys. 2). Interesującym
i rzadkim gatunkiem jest Pinnularia polyonca (Bréb.) O. Müll. (rys. 3).
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