| FRESHWATER ALGAE COMMUNITY OF A MELTWATER RUNNEL,REEVE HILL, CASEY STATION, ANTARCTICA |
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| 作者姓名： | FaradinaMerican WanMaznahWO WanAsmadiWA MashhorMansor |
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| 作者单位： | School of Biological Sciences University Sains Malaysia，School of Biological Sciences University Sains Malaysia，School of Biological Sciences University Sains Malaysia，School of Biological Sciences University Sains Malaysia，11800 Penang Malaysia，11800 Penang Malaysia，11800 Penang Malaysia，11800 Penang Malaysia |
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| 摘 要： | Researches on the Antarctic microalgal diversityand distributions in the freshwater environment ran-ging from snow to large lakes and well-definedstreams are extensive.For instance,studies on thestream microalgal community have been conducted onthe Pervay…
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| 关 键 词： | 淡水 藻类 群落 南极 河流 |
| 文章编号： | 1672-5948（2007）03-243-10 |
| 修稿时间： | 2006-12-06 |
FRESHWATER ALGAE COMMUNITY OF A MELTWATER RUNNEL,REEVE HILL, CASEY STATION, ANTARCTICA |
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| FaradinaMerican WanMaznahWO WanAsmadiWA MashhorMansor.FRESHWATER ALGAE COMMUNITY OF A MELTWATER RUNNEL,REEVE HILL, CASEY STATION, ANTARCTICA[J].Wetland Science,2007,5(3):243-252. |
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| Authors: | Faradina Merican Wan Maznah W O Wan Asmadi W A Mashhor Mansor |
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| Institution: | School of Biological Sciences, University Sains Malaysia, 11800 Penang, Malaysia |
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| Abstract: | The Antarctic runnel can be highly variable in space and time; however, this environment has provided an interesting habitat for terrestrial algal colonization. The runnel of Reeve Hill, Casey Station (66°16.855′S, 110°31.045′E), Antarctica, which occurs intermittently only during the brief austral summer showed high colonization by microalgae dominated mainly by Cyanobacteria mats and diatoms. 9 freshwater microalgae species which includes Oscillatoria fracta, Oscillatoria sp., Navicula muticopsis, Pinnularia borealis, Nitzschia sp., Prasiola crispa, Chlorococcum sp., Syenechococcus aeruginosus and Syenechococcus maior were recorded during the study. The algal community in the runnel to be observed closely resembles that in the larger running water ecosystems in the continent. However, intrusion of seawater, direct exposure to sunlight and influence of sea current in the lower part changes the species community. The lower runnel showed total dominance consists mainly of the marine planktonic Bacillariophycea. Other species detected includes Flagilaria kerguelensis, Flagilaria linearis, Eucampia antarctica, Thalassiosira tumida, Pseudonitzschia lineola, Pseudonitzschia turgiduloides, Achnanthes brevipes and Odontella litigiosa. Lower algal species diversity observed in this study suggests that the number of species obtained is related to the area of environment from which the samples were derived. The local assemblages simply contain species that is favored by the environmental conditions. |
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| Keywords: | algae species freshwater runnel Antarctica |
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