A study of autotrophic communities in two Victoria Land lakes (Continental Antarctica) using photosynthetic pigments
The composition of algal pigments and extracellular polymeric substances (EPS) was determined in microbial mats from two lakes in Victoria Land (Continental Antarctica) with different lithology and environmental features. The aim was to expand knowledge of benthic autotrophic communities in Antarcti...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2010-08-01
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| Series: | Journal of Limnology |
| Subjects: | |
| Online Access: | http://www.jlimnol.it/index.php/jlimnol/article/view/105 |
| _version_ | 1818317706198253568 |
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| author | Roberto BARGAGLI Andrea COLACEVICH Francesca BORGHINI |
| author_facet | Roberto BARGAGLI Andrea COLACEVICH Francesca BORGHINI |
| author_sort | Roberto BARGAGLI |
| collection | DOAJ |
| description | The composition of algal pigments and extracellular polymeric substances (EPS) was determined in microbial mats from two lakes in Victoria Land (Continental Antarctica) with different lithology and environmental features. The aim was to expand knowledge of benthic autotrophic communities in Antarctic lacustrine ecosystems, providing reference data for future assessment of possible changes in environmental conditions and freshwater communities. The results of chemical analyses were supported by microscopy observations. Pigment profiles showed that filamentous cyanobacteria are dominant in both lakes. Samples from the water body at Edmonson Point had greater biodiversity, fewer pigments and lower EPS ratios than those from the lake at Kar Plateau. Differences in mat composition and in pigment and EPS profile between the two lakes are discussed in terms of local environmental conditions such as lithology, ice-cover and UV radiation. The present study suggests that a chemical approach could be useful in the study of benthic communities in Antarctic lakes and their variations in space and time. |
| first_indexed | 2024-12-13T09:41:35Z |
| format | Article |
| id | doaj.art-46d798d33ffc41238bb14d251f051e5d |
| institution | Directory Open Access Journal |
| issn | 1129-5767 1723-8633 |
| language | English |
| last_indexed | 2024-12-13T09:41:35Z |
| publishDate | 2010-08-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | Journal of Limnology |
| spelling | doaj.art-46d798d33ffc41238bb14d251f051e5d2022-12-21T23:52:10ZengPAGEPress PublicationsJournal of Limnology1129-57671723-86332010-08-0169233334010.4081/jlimnol.2010.333A study of autotrophic communities in two Victoria Land lakes (Continental Antarctica) using photosynthetic pigmentsRoberto BARGAGLIAndrea COLACEVICHFrancesca BORGHINIThe composition of algal pigments and extracellular polymeric substances (EPS) was determined in microbial mats from two lakes in Victoria Land (Continental Antarctica) with different lithology and environmental features. The aim was to expand knowledge of benthic autotrophic communities in Antarctic lacustrine ecosystems, providing reference data for future assessment of possible changes in environmental conditions and freshwater communities. The results of chemical analyses were supported by microscopy observations. Pigment profiles showed that filamentous cyanobacteria are dominant in both lakes. Samples from the water body at Edmonson Point had greater biodiversity, fewer pigments and lower EPS ratios than those from the lake at Kar Plateau. Differences in mat composition and in pigment and EPS profile between the two lakes are discussed in terms of local environmental conditions such as lithology, ice-cover and UV radiation. The present study suggests that a chemical approach could be useful in the study of benthic communities in Antarctic lakes and their variations in space and time.http://www.jlimnol.it/index.php/jlimnol/article/view/105Antarctic lakes, microbial mats, algal pigments, EPS |
| spellingShingle | Roberto BARGAGLI Andrea COLACEVICH Francesca BORGHINI A study of autotrophic communities in two Victoria Land lakes (Continental Antarctica) using photosynthetic pigments Journal of Limnology Antarctic lakes, microbial mats, algal pigments, EPS |
| title | A study of autotrophic communities in two Victoria Land lakes (Continental Antarctica) using photosynthetic pigments |
| title_full | A study of autotrophic communities in two Victoria Land lakes (Continental Antarctica) using photosynthetic pigments |
| title_fullStr | A study of autotrophic communities in two Victoria Land lakes (Continental Antarctica) using photosynthetic pigments |
| title_full_unstemmed | A study of autotrophic communities in two Victoria Land lakes (Continental Antarctica) using photosynthetic pigments |
| title_short | A study of autotrophic communities in two Victoria Land lakes (Continental Antarctica) using photosynthetic pigments |
| title_sort | study of autotrophic communities in two victoria land lakes continental antarctica using photosynthetic pigments |
| topic | Antarctic lakes, microbial mats, algal pigments, EPS |
| url | http://www.jlimnol.it/index.php/jlimnol/article/view/105 |
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