A preliminary study of benthic diatoms in contrasting lake environments
Eleven of the 17 freshwater lakes from Signy Island, South Orkney Islands, Antarctica were sampled by snorkel divers. A list of diatom taxa identified from benthic samples is presented. Most freshwater taxa listed were rare and only a few taxa were observed abundantly in many lakes. Assemblage compo...
| Main Author: | |
|---|---|
| Other Authors: | , |
| Format: | Book Part |
| Language: | unknown |
| Published: |
Springer-Verlag
1990
|
| Subjects: | |
| Online Access: | http://nora.nerc.ac.uk/id/eprint/520716/ https://doi.org/10.1007/978-3-642-84074-6_9 |
| Summary: | Eleven of the 17 freshwater lakes from Signy Island, South Orkney Islands, Antarctica were sampled by snorkel divers. A list of diatom taxa identified from benthic samples is presented. Most freshwater taxa listed were rare and only a few taxa were observed abundantly in many lakes. Assemblage composition varied between three broad lake categories: (1) proglacial; (2) oligotrophic; and (3) mesotrophic lakes. Assemblage composition also changed with lake depth in the larger lakes. A second, more detailed study was undertaken on an oligotrophic and a mesotrophic lake. No seasonal trends could be identified. The limitation of the methods used are discussed, and spatial and temporal variability in Antarctic lakes is considered. |
|---|