Growth, population density and population structure of Cetraria nivalis during 240 years of primary colonization
The growth of the alpine lichen Cetraria nivalis was followed in a chronosequence of 240 years of primary colonization in a glacier foreland in the Jotunheimen mountain range and National Park in Norway. The largest thallus of C. nivalis was 96 mm in diameter. It was found in the area that had been...
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Online Access: | http://dx.doi.org/10.1017/s0024282905014891 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282905014891 |
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crcambridgeupr:10.1017/s0024282905014891 2024-03-03T08:44:39+00:00 Growth, population density and population structure of Cetraria nivalis during 240 years of primary colonization HESTMARK, Geir SKOGESAL, Olav SKULLERUD, Øystein 2005 http://dx.doi.org/10.1017/s0024282905014891 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282905014891 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms The Lichenologist volume 37, issue 6, page 535-541 ISSN 0024-2829 1096-1135 Ecology, Evolution, Behavior and Systematics journal-article 2005 crcambridgeupr https://doi.org/10.1017/s0024282905014891 2024-02-08T08:36:05Z The growth of the alpine lichen Cetraria nivalis was followed in a chronosequence of 240 years of primary colonization in a glacier foreland in the Jotunheimen mountain range and National Park in Norway. The largest thallus of C. nivalis was 96 mm in diameter. It was found in the area that had been exposed for a maximum of 240 years. If this individual thallus became established at about the time the habitat was exposed, its average annual diameter increase has been 0·4 mm per year. The growth curve of C. nivalis does however exhibit a pattern of fast growth in the first years followed by a decrease in growth rate. In contrast the population density of C. nivalis increases through time in a linear manner, from 0·4 thalli/m 2 in the areas recently exposed to 10·5 thalli/m 2 in the sites exposed for maximum of 240 years. This suggests a fairly stable flow of propagules over the landscape through the years. The size distribution (population structure) of thalli within the foreland is skewed, with many small individuals and few big ones. Article in Journal/Newspaper glacier Cambridge University Press Norway The Lichenologist 37 6 535 541 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics HESTMARK, Geir SKOGESAL, Olav SKULLERUD, Øystein Growth, population density and population structure of Cetraria nivalis during 240 years of primary colonization |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
The growth of the alpine lichen Cetraria nivalis was followed in a chronosequence of 240 years of primary colonization in a glacier foreland in the Jotunheimen mountain range and National Park in Norway. The largest thallus of C. nivalis was 96 mm in diameter. It was found in the area that had been exposed for a maximum of 240 years. If this individual thallus became established at about the time the habitat was exposed, its average annual diameter increase has been 0·4 mm per year. The growth curve of C. nivalis does however exhibit a pattern of fast growth in the first years followed by a decrease in growth rate. In contrast the population density of C. nivalis increases through time in a linear manner, from 0·4 thalli/m 2 in the areas recently exposed to 10·5 thalli/m 2 in the sites exposed for maximum of 240 years. This suggests a fairly stable flow of propagules over the landscape through the years. The size distribution (population structure) of thalli within the foreland is skewed, with many small individuals and few big ones. |
format |
Article in Journal/Newspaper |
author |
HESTMARK, Geir SKOGESAL, Olav SKULLERUD, Øystein |
author_facet |
HESTMARK, Geir SKOGESAL, Olav SKULLERUD, Øystein |
author_sort |
HESTMARK, Geir |
title |
Growth, population density and population structure of Cetraria nivalis during 240 years of primary colonization |
title_short |
Growth, population density and population structure of Cetraria nivalis during 240 years of primary colonization |
title_full |
Growth, population density and population structure of Cetraria nivalis during 240 years of primary colonization |
title_fullStr |
Growth, population density and population structure of Cetraria nivalis during 240 years of primary colonization |
title_full_unstemmed |
Growth, population density and population structure of Cetraria nivalis during 240 years of primary colonization |
title_sort |
growth, population density and population structure of cetraria nivalis during 240 years of primary colonization |
publisher |
Cambridge University Press (CUP) |
publishDate |
2005 |
url |
http://dx.doi.org/10.1017/s0024282905014891 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0024282905014891 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
glacier |
genre_facet |
glacier |
op_source |
The Lichenologist volume 37, issue 6, page 535-541 ISSN 0024-2829 1096-1135 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0024282905014891 |
container_title |
The Lichenologist |
container_volume |
37 |
container_issue |
6 |
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535 |
op_container_end_page |
541 |
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1792500134288818176 |