Diversity and abundance of soil algae in the polar desert, Sverdrup Pass, central Ellesmere Island
Abstract Cyanobacteria and eukaryotic algae were investigated during three seasons in 18 plots established across Sverdrup Pass valley of central Ellesmere Island, 79°N, Canada. The sites differed in altitude, substratum, and other characteristics. A high species diversity totalled 136 taxa. Cyanoba...
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crcambridgeupr:10.1017/s0032247400015515 2024-09-09T19:39:01+00:00 Diversity and abundance of soil algae in the polar desert, Sverdrup Pass, central Ellesmere Island Elster, Josef Lukesová, Alena Svoboda, Josef Kopecky, Jirí Kanda, Hiroshi 1999 http://dx.doi.org/10.1017/s0032247400015515 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400015515 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 35, issue 194, page 231-254 ISSN 0032-2474 1475-3057 journal-article 1999 crcambridgeupr https://doi.org/10.1017/s0032247400015515 2024-07-03T04:04:10Z Abstract Cyanobacteria and eukaryotic algae were investigated during three seasons in 18 plots established across Sverdrup Pass valley of central Ellesmere Island, 79°N, Canada. The sites differed in altitude, substratum, and other characteristics. A high species diversity totalled 136 taxa. Cyanobacteria accounted for 52 and eukaryotic algae 84 species. In both groups, numerous species did not correspond to any taxa described. However, high diversity did not always coincide with high algal abundance or biomass. On older and stable landscapes, visible crusts developed, containing mostly cyanobacteria, fungi, and other microbial components. Considerable variation in algal diversity and abundance was found among the sites. Also the southern, granitic portion of the pass was richer in green algae compared to its northern, dolomitic portion where motile cyanobacteria were more prominent. These micro-autotrophs occupied the soil profile to a depth of 7 cm. Their highest density was not at the surface but at 3–4 cm depth. One plot was contaminated by windblown copper-rich dust from a nearby outcrop and soil here was poorest in content of photosynthetic pigments, suggesting a local heavy-metal toxicity. Article in Journal/Newspaper Ellesmere Island polar desert Polar Record Sverdrup Pass Cambridge University Press Canada Ellesmere Island Sverdrup Pass ENVELOPE(-80.498,-80.498,79.135,79.135) Polar Record 35 194 231 254 |
institution |
Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Cyanobacteria and eukaryotic algae were investigated during three seasons in 18 plots established across Sverdrup Pass valley of central Ellesmere Island, 79°N, Canada. The sites differed in altitude, substratum, and other characteristics. A high species diversity totalled 136 taxa. Cyanobacteria accounted for 52 and eukaryotic algae 84 species. In both groups, numerous species did not correspond to any taxa described. However, high diversity did not always coincide with high algal abundance or biomass. On older and stable landscapes, visible crusts developed, containing mostly cyanobacteria, fungi, and other microbial components. Considerable variation in algal diversity and abundance was found among the sites. Also the southern, granitic portion of the pass was richer in green algae compared to its northern, dolomitic portion where motile cyanobacteria were more prominent. These micro-autotrophs occupied the soil profile to a depth of 7 cm. Their highest density was not at the surface but at 3–4 cm depth. One plot was contaminated by windblown copper-rich dust from a nearby outcrop and soil here was poorest in content of photosynthetic pigments, suggesting a local heavy-metal toxicity. |
format |
Article in Journal/Newspaper |
author |
Elster, Josef Lukesová, Alena Svoboda, Josef Kopecky, Jirí Kanda, Hiroshi |
spellingShingle |
Elster, Josef Lukesová, Alena Svoboda, Josef Kopecky, Jirí Kanda, Hiroshi Diversity and abundance of soil algae in the polar desert, Sverdrup Pass, central Ellesmere Island |
author_facet |
Elster, Josef Lukesová, Alena Svoboda, Josef Kopecky, Jirí Kanda, Hiroshi |
author_sort |
Elster, Josef |
title |
Diversity and abundance of soil algae in the polar desert, Sverdrup Pass, central Ellesmere Island |
title_short |
Diversity and abundance of soil algae in the polar desert, Sverdrup Pass, central Ellesmere Island |
title_full |
Diversity and abundance of soil algae in the polar desert, Sverdrup Pass, central Ellesmere Island |
title_fullStr |
Diversity and abundance of soil algae in the polar desert, Sverdrup Pass, central Ellesmere Island |
title_full_unstemmed |
Diversity and abundance of soil algae in the polar desert, Sverdrup Pass, central Ellesmere Island |
title_sort |
diversity and abundance of soil algae in the polar desert, sverdrup pass, central ellesmere island |
publisher |
Cambridge University Press (CUP) |
publishDate |
1999 |
url |
http://dx.doi.org/10.1017/s0032247400015515 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400015515 |
long_lat |
ENVELOPE(-80.498,-80.498,79.135,79.135) |
geographic |
Canada Ellesmere Island Sverdrup Pass |
geographic_facet |
Canada Ellesmere Island Sverdrup Pass |
genre |
Ellesmere Island polar desert Polar Record Sverdrup Pass |
genre_facet |
Ellesmere Island polar desert Polar Record Sverdrup Pass |
op_source |
Polar Record volume 35, issue 194, page 231-254 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247400015515 |
container_title |
Polar Record |
container_volume |
35 |
container_issue |
194 |
container_start_page |
231 |
op_container_end_page |
254 |
_version_ |
1809908174692548608 |