Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites
Abstract There are marked declines in precipitation, mean temperatures and the number of lichen species with increasing latitude in Antarctica. However, it is not known which factors are the predominant controllers of biodiversity changes. Results are presented from over two years of almost continuo...
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crcambridgeupr:10.1017/s0954102010000647 2024-03-03T08:38:34+00:00 Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites Schroeter, Burkhard Green, T.G. Allan Pannewitz, Stefan Schlensog, Mark Sancho, Leopoldo G. 2010 http://dx.doi.org/10.1017/s0954102010000647 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102010000647 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 22, issue 6, page 681-690 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2010 crcambridgeupr https://doi.org/10.1017/s0954102010000647 2024-02-08T08:34:31Z Abstract There are marked declines in precipitation, mean temperatures and the number of lichen species with increasing latitude in Antarctica. However, it is not known which factors are the predominant controllers of biodiversity changes. Results are presented from over two years of almost continuous monitoring of both microclimate and activity in lichens at Livingston Island, South Shetland Islands, 62°S, and Botany Bay, Ross Sea region, 77°S. Lichen activity was evident over a much longer period at Livingston Island, (3694 versus 897 hours) and could occur in any month whereas it was almost completely confined to the period November–February at Botany Bay. Mean air temperatures were much lower at Botany Bay (-18° compared to -1.5°C at Livingston Island), but the temperatures at which the lichens were active were almost identical at around 2°C at both sites. When the lichens were active incident light at Botany Bay was very much higher. The differences are related to the availability of meltwater which only occurs at times of high light and warm temperatures at Botany Bay. Temperature as a direct effect does not seem to explain the differences in biodiversity between the sites, but an indirect effect through active hours is much more probable. In addition there are negative effects of stresses such as high light and extreme winter cold at Botany Bay. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Livingston Island Ross Sea South Shetland Islands Cambridge University Press Antarctic Ross Sea South Shetland Islands Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) Botany Bay ENVELOPE(-57.892,-57.892,-63.678,-63.678) Antarctic Science 22 6 681 690 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Schroeter, Burkhard Green, T.G. Allan Pannewitz, Stefan Schlensog, Mark Sancho, Leopoldo G. Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract There are marked declines in precipitation, mean temperatures and the number of lichen species with increasing latitude in Antarctica. However, it is not known which factors are the predominant controllers of biodiversity changes. Results are presented from over two years of almost continuous monitoring of both microclimate and activity in lichens at Livingston Island, South Shetland Islands, 62°S, and Botany Bay, Ross Sea region, 77°S. Lichen activity was evident over a much longer period at Livingston Island, (3694 versus 897 hours) and could occur in any month whereas it was almost completely confined to the period November–February at Botany Bay. Mean air temperatures were much lower at Botany Bay (-18° compared to -1.5°C at Livingston Island), but the temperatures at which the lichens were active were almost identical at around 2°C at both sites. When the lichens were active incident light at Botany Bay was very much higher. The differences are related to the availability of meltwater which only occurs at times of high light and warm temperatures at Botany Bay. Temperature as a direct effect does not seem to explain the differences in biodiversity between the sites, but an indirect effect through active hours is much more probable. In addition there are negative effects of stresses such as high light and extreme winter cold at Botany Bay. |
format |
Article in Journal/Newspaper |
author |
Schroeter, Burkhard Green, T.G. Allan Pannewitz, Stefan Schlensog, Mark Sancho, Leopoldo G. |
author_facet |
Schroeter, Burkhard Green, T.G. Allan Pannewitz, Stefan Schlensog, Mark Sancho, Leopoldo G. |
author_sort |
Schroeter, Burkhard |
title |
Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites |
title_short |
Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites |
title_full |
Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites |
title_fullStr |
Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites |
title_full_unstemmed |
Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites |
title_sort |
fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime antarctic sites |
publisher |
Cambridge University Press (CUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1017/s0954102010000647 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102010000647 |
long_lat |
ENVELOPE(-60.500,-60.500,-62.600,-62.600) ENVELOPE(-57.892,-57.892,-63.678,-63.678) |
geographic |
Antarctic Ross Sea South Shetland Islands Livingston Island Botany Bay |
geographic_facet |
Antarctic Ross Sea South Shetland Islands Livingston Island Botany Bay |
genre |
Antarc* Antarctic Antarctic Science Antarctica Livingston Island Ross Sea South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Livingston Island Ross Sea South Shetland Islands |
op_source |
Antarctic Science volume 22, issue 6, page 681-690 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102010000647 |
container_title |
Antarctic Science |
container_volume |
22 |
container_issue |
6 |
container_start_page |
681 |
op_container_end_page |
690 |
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1792506974442618880 |