MESSYASZ, Beata, Joanna CZERWIK-MARCINKOWSKA, Andreas LÜCKE and Bohuslav UHER. Differences in the ultrastructure of two selected taxa of phytoplankton in a thermally stratified Lake Holzmaar (Germany). Biodiversity: Research and Conservation. Poznan: Adam Mickiewicz University, 2012, vol. 28, No 1, p. 55-62. ISSN 1897-2810. doi:10.2478/v10119-012-0029-y.
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Original name Differences in the ultrastructure of two selected taxa of phytoplankton in a thermally stratified Lake Holzmaar (Germany)
Name in Czech Rozdíly v ultrastruktuře dvou vybraných taxonů fytoplanktonu v termálně stratifikovaném jezeře Holzmaar (Německo)
Authors MESSYASZ, Beata (616 Poland), Joanna CZERWIK-MARCINKOWSKA (616 Poland), Andreas LÜCKE (276 Germany) and Bohuslav UHER (203 Czech Republic, guarantor, belonging to the institution).
Edition Biodiversity: Research and Conservation, Poznan, Adam Mickiewicz University, 2012, 1897-2810.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher Poland
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/00216224:14310/12:00064082
Organization unit Faculty of Science
Doi http://dx.doi.org/10.2478/v10119-012-0029-y
Keywords (in Czech) Plaktothrix rubescens; Synechocystis aquatili; Desmodesmus grahneisii; ultrastruktura; autekologie
Keywords in English Planktothrix rubescens; Synechocystis aquatilis; Desmodesmus grahneisii; ultrastructure; autecology
Tags AKR, rivok
Tags International impact, Reviewed
Changed by Changed by: RNDr. Bohuslav Uher, Ph.D., učo 102018. Changed: 25/2/2013 16:01.
Abstract
This paper presents the results of ultrastructural studies and ecological aspects of some phytoplankton species belongingto the groups of cyanobacteria (Planktothrix rubescens, Synechocystis aquatilis) and green algae (Desmodesmus grahneisii). Specimens were collected during summertime from the mesotrophic and stratified Lake Holzmaar (Western Germany) as planktonic from the pelagic zone. The highest cyanobacterium P. rubescens concentration was detected in the metalimnion where the alkaline pH, low phosphorus and high nitrogen contents were recorded. It was characterized by straight filaments up to 1000 um long and 5.4-8 um wide and numerous aerotopes in cells. The accompanying algae were identified by ultrastructuralanalysis and photographic documentation was provided. In the case of D. grahneisii, chloroplast was concentrated in the parietal part of cell with one large, oval pyrenoid and, in addition, the granular and spiny cell wall clearly showed important taxonomical criteria for Desmodesmus genera. This is in contrast with cyanobacterium S. aquatilis where the presence of a homogeneous content with visible chromatoplasma was mostly distributed through the cell. This algal association was stable in the epilimnion characterized by the presence of high temperature, pH values, nitrate nitrogen and oxygen concentrations.
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