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Cylindrospermopsis raciborskii
caption
Cylindrospermopsis raciborskii was the second N2-fixing filamentous cyanobacterium that invaded Lake Kinneret. It was first observed in 2000 and by 2005 has replaced A. ovalisporum as the dominant N2 fixer in summer-fall. The thin (1.5 - 3 um), delicate filaments of this species are characterized by drop-shaped heterocytes, and when they don\'t appear, pointed terminal cells. In summer 2005 this species formed a massive bloom with > 30,000 filaments/mL.
author
aalster and tzohary
copyright
A Alster & T Zohary, Kinneret Limnological Laboratory, IOLR
observation details
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image notes
Photo taken with an Olympus BX50 Microscope equipped with DIC optics and PixeLink digital camera, mag. X40
