Examples of floating Nitzschia sigmoidea
Note: The lengths of the observed Nitzschia sigmoidea ranged from 180 µm to 380 µm.
Locality: Aichstruter Stausee (48°54'06.6"N 9°38'25.2"E)
Found in April 2015
Time-lapse factor: 4 (i.e. four times faster than real time), dark field
Locality: creek Lein (48°53'04.6"N 9°38'29.2"E)
Found in August 2015
Time-lapse factor: 20, dark field
Time-lapse factor: 10, dark field
Locality: pond in Hohenheim (Stuttgart) (48°42'34.0"N 9°12'29.1"E)
Found in November 2016
Time-lapse factor: 24, bright field
Time-lapse factor: 10, bright field
Time-lapse factor: 4, PlasDIC
