Pseudanabaena frigida (Fritsch) Anagnostidis

Bolshezemelskaya tundra, неизвестно точное местонахождение

West Spitsbergen island. The north coast of Hornsund bay. The slope of S exposure Gnålberget mountain. At the foot of the Gnalberget rocky cliffs. Material was collected from soil surface, between single tussocks of Poa alpina var. vivipara and Cochlearia groenlandica. Soils were strongly fertilized with nitrogen and phosphorus from bird excrements.

Остров Западный Шпицберген (West Spitsbergen island), северный берег залива Хорнсунд (Hornsund), слон южной эксп. горы Гнэльбергет (Gnålberget). Вертикальная стена скалы, занятой птичьим базаром. (Walls of rocky cliff on the Gnalberget slope occupied by colonies of fish−eating birds (Uria lomvia, Rissa tridactyla). Algae were collected from rocky surfaces directly under birds colonies. These places were in permanent contact with flowing water containing bird excrements).

Остров Западный Шпицберген (West Spitsbergen island), северный берег залива Хорнсунд (Hornsund), долина реки Ревэльва (Revdalen Valley), нижняя часть склона горы Арикаммен (Lower part of the Ariekammen slope), вертикальная скалистая стена, постоянно увлажненная водой стекающей с птичьих базаров (algae were collected from the vertical rocky walls permanently sprinkled with water containing an enormous amount of bird excrements.).