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Use of desmids to assess the natural conservation value of a Hungarian oxbow (Malom-Tisza, NE-Hungary)
- Source :
- Biologia. 63:928-935
- Publication Year :
- 2008
- Publisher :
- Springer Science and Business Media LLC, 2008.
-
Abstract
- A method recently proposed by Coesel that uses the desmid flora to assess the conservation value of aquatic habitats was applied to an alkaline and hypertrophic oxbow of the Upper Tisza river (NE Hungary). According to the macrophyte community the oxbow contains two distinct habitats, both of which provide suitable conditions for the development of a rich desmid flora. High temporal and spatial differences in the algal flora were observed in periphyton and plankton samples taken in June and August 2004. The sample of Utricularia vulgaris periphyton collected in August was characterised by the most species-rich desmid flora. The conservation value of this sample was the maximum according to Coesel’s method. The latter also proved to be useful for the assessment of the conservation value of plankton net samples taken from among the macrophytes. The use of modified rarity value calculations as recently proposed by Feher did not significantly affect the conservation value, but different enumeration methods to quantify the floristic diversity did result in different conservation values. We found that Coesel’s desmid based method is a useful tool for assessing the conservation value of the studied oxbow. Based our results the Coesel method’s applicability and usefulness depended on (i) the sampling location (open water or macrophytic region) samples were taken from open water or from macrophytic region; and (ii) species enumeration procedures (up to 400 specimens counted, or whole droplets counted).
- Subjects :
- Flora
Utricularia vulgaris
Ecology
Desmidiales
Cell Biology
Plant Science
Biology
Plankton
Környezettudományok
biology.organism_classification
Biochemistry
Floristics
Macrophyte
Természettudományok
Habitat
Genetics
Animal Science and Zoology
Periphyton
Molecular Biology
Ecology, Evolution, Behavior and Systematics
Subjects
Details
- ISSN :
- 13369563 and 00063088
- Volume :
- 63
- Database :
- OpenAIRE
- Journal :
- Biologia
- Accession number :
- edsair.doi.dedup.....be6fd4ee7462ed35a80bb390b22fb00c