This week I snagged some photos for all of you avid readers of this blog (not that there are any). However, I did get photos of the life forms I have previously talked about. This week in pictures:
Here we have some pretty good pictures of Nostoc. Higher order taxonomy: Eubacteria, Cyanobacteria, Nostocales, Nostcaceae. Nostoc is the genus, and is composed of several species of gelatinous colonies of filaments (the trichomes we've talked about previously) surrounded by a thin "sheath." Nostoc are nitrogen-fixing and photosynthetic (but do not have chloroplasts).
NOSTOC
Here we have some pretty good pictures of Nostoc. Higher order taxonomy: Eubacteria, Cyanobacteria, Nostocales, Nostcaceae. Nostoc is the genus, and is composed of several species of gelatinous colonies of filaments (the trichomes we've talked about previously) surrounded by a thin "sheath." Nostoc are nitrogen-fixing and photosynthetic (but do not have chloroplasts).
SCYTONEMA
Above you can see some spectacular pictures of Scytonema, a cyanobacteria. Many details of this cyanobacteria are included in previous posts, so I won't drag on about it. However, some cool pictures of Sytonema in real life places can be seen at the first website. Plus, a fantastic picture can be found at the second (note the clarity!).
ANKISTRODESMUS
Above you can see the Ankistrodemus. Each line of the "jack" like formation is actually a seperate specimen. As you can tell, each one is long and needle-shaped. The Ankistrodesmus is very common in North America in freshwater ponds and lakes, and can even be found in waterfalls. This species has a high tolerance for copper treatments, which are commonly used to control algal growth.
OTHER ALGAE
1 comment:
Great experiment! I especially love the Ankistrodemus.
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