| Tartalmi leírás: |
Benthic diatom flora of the River Danube was investigated along the river from the source streams to the end of the Hungarian stretch during a four-year period. Characteristic diatom community assemblages were established using Kohonen Self-Organizing Map (SOM) algorithm. We found five sample clusters, arranged according to the location. The first three groups are located in the German-Austrian stretch, while the fourth and fifth groups are located in the Slovakian-Hungarian stretch. Characteristic species of the clusters 1 and 2 are Achnanthidium minutisimum (KÜTZ.) CZARNECKI, Denticula tenuis KÜTZ., Nitzschia fonticola GRUN., Psammothidium bioretii (GERMAIN) BUKHT. and ROUND, Melosira varians AG., Planothidium subatomoides (HUST.) BUKHT. and ROUND, character species of cluster 3 is Amphora pediculus (KÜTZ.) GRUN., while character species of the clusters 4 and 5 are Nitzschia dissipata (KÜTZ.) GRUN., Navicula cryptotenella LANGE-BERT., Cocconeis placentula var. euglypta (EHR.) GRUN., Rhoicosphenia abbreviata (AG.) LANGE-BERT., Nitzschia inconspicua GRUN. This arrangement is also well in agreement with the poorer water quality of the lower, and the better water quality of the upper stretch.
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| Azonosító: |
Várbíró, Gábor and Borics, Gábor and Kiss, Keve Tihamér and Szabó-Taylor, Katalin and Plenkovic-Moraj, A. and Ács, Éva (2007) Use of Kohonen self organizing maps (SOM) for the characterisation of benthic diatom associations of the River Danube and its tributaries. Archiv fur Hydrobiologie. Supplement-Band: Large Rivers, 17 (Su 161). pp. 395-404. ISSN 0945-3784
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