Contribution to the Diversity of World Bacillariaceae: Two New Nitzschia Taxa

During a biological survey carried out in a high-altitude saline lake of the Bolivian Altiplano and in Türkmenbaba plateau in Sakarya river catchment in Kütahya and Korudere and Havuzdere streams in Marmarean river catchment in Yalova, Turkey, two unknown Nitzschia species were found in various popu...

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Bibliographic Details
Published in:Inland water biology 2022, Vol.15 (2), p.89-96
Main Authors: Blanco, S., Solak, C. N.
Format: Article
Language:English
Subjects:
Biodiversity
Biogeography
Biological surveys
Biology
Biomedical and Life Sciences
Catchment area
Electron microscopes
Electron microscopy
Freshwater & Marine Ecology
Geoecology/Natural Processes
High altitude
Lakes
Life Sciences
Morphology
New species
Nitzschia
Population density
River catchments
Rivers
Saline environments
Salt lakes
Scanning electron microscopy
Streams
Surveying
Systematics of Hydrobionts
Taxa
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Summary:During a biological survey carried out in a high-altitude saline lake of the Bolivian Altiplano and in Türkmenbaba plateau in Sakarya river catchment in Kütahya and Korudere and Havuzdere streams in Marmarean river catchment in Yalova, Turkey, two unknown Nitzschia species were found in various population densities. Detailed light and scanning electron microscopy observations allowed their description as taxa new to Science. Differential diagnostic criteria with respect to similar taxa, together with ecological and biogeographical implications of these findings, are briefly discussed. The most noteworthy feature in N. tortuosa sp. nov. is the pervalvar twist seen at poles, well discernible in scanning electron microscopy (SEM), whereas N. seblae sp. nov. resembles N. tropica but presents broader valves and lower striae and fibulae densities.
ISSN:1995-0829
1995-0837
DOI:10.1134/S199508292202002X