The Occurrence of the Thermophilic Blue-green Alga, Mastigocladus laminosus, on Surtsey in 1970
Although several species of blue-green cllgae ancI other algae have been reported from rnoist areas surrounding steam vents on Surtsey, none of tllese appear to be true therniopl~iles exhibit-ing growth optima above 45°C (Sch~abe, 1970a, 1970b; Behre & Schwabe, 1969). T h e volcanic island of Sl...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.516.8226 http://www.surtsey.is/SRS_publ/1972-VI/1972_VI_2_03.pdf |
| Summary: | Although several species of blue-green cllgae ancI other algae have been reported from rnoist areas surrounding steam vents on Surtsey, none of tllese appear to be true therniopl~iles exhibit-ing growth optima above 45°C (Sch~abe, 1970a, 1970b; Behre & Schwabe, 1969). T h e volcanic island of Slirtsey was first formed in late 1963 off the south coast ol Iceland. Mastzgocladzrs lurntrro~z~s (Ag.) Cohn is a cos-mopolitan therrnophilic blue-green alga (Schwn-be, 1960) and its various forms are very commori in almost 2111 01 the hot springs and stcam vents of Iceland ~vllicil have;I neutral to alkaline pH and are below a temperature of about 63-ti4"C (C:astenholz, 1969a). Trvo very distinct forms are common in Icelandic]lot water. One is a seldom-branching tricllome which grows at temperatures constantly as high as (53--(i4"C, thus representing the npper limit photo~ynthetic blue-green alga of Iceland. T h e o t h e ~ is the typical brancliiilg form ~vhich doer not grow above about 57°C: |
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