Fottea, 2009 (vol. 9), issue 1
49th workshop of the Czech Phycological Society
Fottea 9(1): i, 2009
Charophytes (Characeae, Charophyta) in the Czech Republic: taxonomy, autecology and distribution.
Lenka Caisová, Maciej Gąbka
Fottea 9(1): 1-43, 2009 | DOI: 10.5507/fot.2009.001
The Charales (stoneworts) are an ancient monophyletic group with conserved features same in ancesters as well as in present representatives. They are considered to be closely related to the ancestors of land plants. The axonomy of Charales was delimitated on the basis of morphology and later by fossil characters as well. Nowadays, the higher taxa are relatively well defined and their delimitation is supported by molecular analyses. However, the situation is more problematic at subgeneric levels. The appearance often depends on the environmental conditions that can produce broad morphological variation. The last report on Charales in Bohemia was a checklist...
Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria): A brief historic overview and recent discovery in the Assiniboine River (Canada).
Hedy J. Kling
Fottea 9(1): 45-47, 2009 | DOI: 10.5507/fot.2009.002
Cylindrospermopsis raciborskii (Wołoszyńska) Seenayya et Subba Raju is a freshwater planktonic nitrogen fixing filamentous toxic cyanobacterium (blue-green alga, cyanoprokaryote) belonging to the order Nostocales. Historically, it was thought to be a tropical or subtropical alga but in the past 26 years since it was recorded in Hungary in 1978, it has been found in increasing abundance in rivers and shallow water bodies in temperate regions of Asia, Africa, Australia, Europe, North America and South America by several researchers including most recently Branco & Senna (1991), Padisák (1997), Chapman & Schelske (1997), Fabbro et al. (1996),...
Observations on morphology of Anabaena sedovii KOSSINSK. isolated from the Yenissei River.
Igor V. Kozhevnikov, Nelya A. Kozhevnikova
Fottea 9(1): 49-51, 2009 | DOI: 10.5507/fot.2009.003
For the first time Anabaena sedovii Kossinsk. (Nostocales, Cyanobacteria) is recorded from the lower of Yenissei River near Igarka city (East Siberia) and isolated to monospecific culture. Morphological studies were performed on short-term cultures. The size and shape of vegetative cells, size akinetes and heterocytes as well as position of akinetes of our isolate under culture conditions almost correspond to features of nature populations as described by Kosinskaya. New further diacritical features such as double and triple adjacent intercalar heterocytes,
terminal heterocytes, short distance between heterocytes and occurrence of gas vesicles...
New reports of Vaucheria species (Vaucheriales, Xanthophyceae, Heterokontophyta) from the Czech Republic.
Katarína Nemjová, Veronika Kaufnerová
Fottea 9(1): 53-57, 2009 | DOI: 10.5507/fot.2009.004
Several Vaucheria species from the Czech Republic were collected and identified, including V. borealis Hirn, V. hercyniana Rieth and V. woroniniana Heering for the first time from the Czech Republic. Three other species, V. terrestris (Vaucher) Lyngb., V. sessilis (Vaucher) DC. and V. geminata (Vaucher) DC. were also recorded.
Nomenclatural validation of the genetically revised cyanobacterial genus Dolichospermum (RALFS ex BORNET et FLAHAULT) comb. nova.
Pirjo Wacklin, Lucien Hoffmann, Jiří Komárek
Fottea 9(1): 59-64, 2009 | DOI: 10.5507/fot.2009.005
The traditional cyanobacterial genus Anabaena is heterogeneous, as follows from the modern molecular evaluation. The cluster of planktic Anabaena-morphotypes with gas vesicles in cells must be separated as a unique generic entity from the typical benthic mat-forming species. In the present articles all planktic morphospecies are transferred into the new genus Dolichospermum in agreement with Botanical nomenclatoric rules. The name "Dolichospermum" is based on a taxonomic category of section in starting point publication (Bornet & Flahault
1888), which is valid for heterocytous cynobacteria.
Species composition and diversity of aero-terrestrial algae and cyanobacteria of the Boreč Hill ventaroles.
Fottea 9(1): 65-80, 2009 | DOI: 10.5507/fot.2009.006
The algal flora of the Boreč Hill ventaroles was examined and compared with the flora of their close surroundings. In comparison to unaffected sites, the ventaroles differ in seasonal temperature fluctuation as well as in soil pH. Winter exhalations caused by continual air circulation in the cranny system of rock massive result in a significant increase in air temperature and soil pH. The ventaroles were inhabited by a markedly richer and more diversified algal flora. Over half of investigated species occurred only in the ventaroles, including all chrysophyte, eustigmatophyte and desmid taxa. In contrast to the unaffected sites, different algal populations...
Spatial distribution of cyanobacteria and algae from the tombstone in a historic cemetery in Bratislava, Slovakia.
Fottea 9(1): 81-92, 2009 | DOI: 10.5507/fot.2009.007
This study focuses on species composition and spatial distribution of cyanobacterial and algal communities colonizing the surface of the tombstone. Ecological and taxonomical data were used for evaluation of changes in their vertical distribution. A total of 25 taxa were identified, 13 of them belonging to chlorophytes, 12 to other groups of algae and cyanobacteria; in addition four mosses and one liverwort occurred at 17 sampling sites. Three species, Klebsormidium crenulatum, Desmococcus olivaceus and Stichococcus bacillaris, were found as the most abundant taxa. The aeroplanctonic species Desmococcus olivaceus, Stichococcus...
Silica-scaled chrysophytes of Southern Bohemian water bodies, including Mallomonas conspersa DÜRRSCHMIDT.
Kateřina Janatková, Yvonne Němcová
Fottea 9(1): 93-99, 2009 | DOI: 10.5507/fot.2009.008
Silica-scaled chrysophytes are often important components of the phytoplankton community of freshwater lakes and reservoirs. A total of 25 taxa were recorded during an investigation of Borkovická Blata peat-bog and Novohradské Hory ponds, representing five genera. Along with cosmopolitan and widely distributed species, rare Synura mollispina, Mallomonas conspersa, M. retifera and M. kalinae were found. This study also represent only the third time that M. conspersa has ever been reported and documented by scale microphotographs. This taxon has so far been reported only from Japan and New Zealand. The close resemblance...
The silica-scaled chrysophytes of the Elbe Sandstone Region, Czech Republic.
Martina Pichrtová, Jana Veselá
Fottea 9(1): 101-106, 2009 | DOI: 10.5507/fot.2009.009
We investigated the silica-scaled chrysophyte flora (classes Chrysophyceae and Synurophyceae) in the Czech part of the unique Elbe sandstone region. We focused on such types of habitats that had not been studied in the region before - small ponds, forest pools and headwater streams. In 10 localities we found altogether 20 chrysophyte species. Chrysodydimus synuroideus, Mallomonas multisetigera and M. striata var. serrata were recorded from the Czech Republic for the first time. Moreover, another 4 species were first records for the Elbe sandstone region. Living chrysophytes were also observed in sediment samples, though...
Preliminary survey of potentially harmful dinoflagellates in Nigeria´s coastal waters.
Cyril C. Ajuzie, Guy T. Houvenaghel
Fottea 9(1): 107-120, 2009 | DOI: 10.5507/fot.2009.010
In many coastal states the presence and impacts of harmful dinoflagellates have been investigated and documented in the literature. Scientists and government officials in many countries routinely monitor their coastal waters for harmful algae in order to prevent harvesting of contaminated seafood. But this is not the case for Nigeria, a coastal state in the Gulf of Guinea, West Africa. The present work reports findings from a first attempt to monitor potentially harmful algae in the coastal waters of Nigeria. Samples were collected from specific locations that included a coastal sea, a lagoon, estuaries and creeks along Nigeria's coastline in November...
Seasonal succession of epipelic algae: a case study on a mesotrophic pond in a temperate climate.
Jana Špačková, Petr Hašler, Jana Štěpánková, Aloisie Poulíčková
Fottea 9(1): 121-133, 2009 | DOI: 10.5507/fot.2009.011
The seasonal succession of algal species in the epipelon of shallow, mesotrophic pond Bezedník (Czech Republic) with special attention to diatoms (particularly Sellaphora) is described. The composition of epipelic algal assemblages changed over time in both higher taxonomic groupings and species representations. Spring and autumn were characterized by a dominance of diatoms; euglenophytes had their maximum in June and cyanobacteria were typical for the summer season. The occurrence of algal species also correlated with water temperature. However, although the growth of some species was restricted to a particular month, other species or species complexes...
The desmids of the Swamp Nature Reserve and a small neighbouring bog: species composition and ecological condition of both sites.
Fottea 9(1): 135-148, 2009 | DOI: 10.5507/fot.2009.012
The present study is a summary of recent findings concerning the desmid flora of the Swamp Nature Reserve and a small neighbouring bog. A total of 203 desmid taxa belonging to 22 genera were found, including 39 taxa that are considered very rare in the Czech Republic. Of this number, 46 taxa were found in the Swamp and
203 taxa in the neighbouring bog.
The ecological condition of both localities was assessed on the basis of the species composition of the desmid communities encountered. The results indicate that the present overall ecological situation of the Swamp is favourable for the development of a characteristic, acidophilous desmid community....
The pyrenoid ultrastructure in Oocystis lacustris.
Maya P. Stoyneva, Elisabeth Ingolić, Georg Gärtner, Wim Vyverman
Fottea 9(1): 149-154, 2009 | DOI: 10.5507/fot.2009.013
The fine structure of vegetative cells of Oocystis lacustris has been studied with special attention to the ultrastructure of the pyrenoid and its starch sheath. The TEM-investigation showed that the pyrenoid matrix is homogenous, not traversed by thylakoids and the surrounding starch sheath is continuous, horseshoe-shaped or fragmented in 2 starch plates. This starch sheath structure is regarded as a common feature within Oocystis and closely related genera Eremosphaera and Neglectella.
Cyanobacteria and associated invertebrates in Leontari Cave.
Vasiliki Lamprinou, Adriani Pantazidou, Georgia Papadogiannaki, Canella Radea, Athena Economou-Amilli
Fottea 9(1): 155-164, 2009 | DOI: 10.5507/fot.2009.014
The present paper deals with biocommunities of cave Leontari, Attica (Greece) focusing on its lithophytic cyanobacteria, and the associated microfauna. The cave is of archaeological importance, not touristically exploited, naturally lighted through the entrance; it consists of one chamber with poor stalactite and stalagmite limestone decoration. During a survey in three campaigns, samples of cyanobacteria and soil invertebrates were collected from four sites (I-IV) along a light(PAR)-temperature-humidity gradient. Light microscopic observations of natural
and cultured material have shown that epilithic and endolithic cyanobacteria were almost the...
100th Anniversary of birth of the Czech desmidiologist Dr. Jiří Růžička
Fottea 9(1): 165-168, 2009