Facilitation and competition in the high Arctic: the importance of the experimental approach
In the last decade, plant ecologists have focussed more on the occurrence of positive plant-plant interactions than ever before. Especially in severe environments, such as the Arctic, species removal experiments tend to find facilitative rather than competitive effects, casting doubt on the importan...
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ftufz:oai:ufz.de:5440 2023-12-10T09:44:54+01:00 Facilitation and competition in the high Arctic: the importance of the experimental approach Dormann, Carsten Brooker, R.W. 2002 application/pdf https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=5440 https://doi.org/10.1016/S1146-609X(02)01158-X en eng Elsevier Acta Oecologica-International Journal of Ecology 23 (5);; 297 - 301 https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=5440 https://dx.doi.org/10.1016/S1146-609X(02)01158-X info:eu-repo/semantics/closedAccess ISSN: 1146-609x Competition Facilitation Luzula confusa Removal experiment Salix polaris info:eu-repo/semantics/article https://purl.org/dc/dcmitype/Text 2002 ftufz https://doi.org/10.1016/S1146-609X(02)01158-X 2023-11-12T23:29:12Z In the last decade, plant ecologists have focussed more on the occurrence of positive plant-plant interactions than ever before. Especially in severe environments, such as the Arctic, species removal experiments tend to find facilitative rather than competitive effects, casting doubt on the importance of competition under extreme growing conditions. Two approaches to measure plant-plant interactions presented here reveal that competition affects plant growth even in the high Arctic. Luzula confusa and Salix polaris show a reduced growth in mixed stands compared with pure. This competition effect is not detected in a removal experiment, which inevitably also alters site microclimate. Indeed, in the latter experiment, facilitative effects of Luzula on Salix were found. Evidently, both facilitation and competition are acting and important. Causes and implications are discussed using a conceptual model derived from that of Brooker and Callaghan (1998). Article in Journal/Newspaper Arctic Luzula confusa Salix polaris UFZ - Publication Index (Helmholtz-Centre for Environmental Research) Arctic Acta Oecologica 23 5 297 301 |
institution |
Open Polar |
collection |
UFZ - Publication Index (Helmholtz-Centre for Environmental Research) |
op_collection_id |
ftufz |
language |
English |
topic |
Competition Facilitation Luzula confusa Removal experiment Salix polaris |
spellingShingle |
Competition Facilitation Luzula confusa Removal experiment Salix polaris Dormann, Carsten Brooker, R.W. Facilitation and competition in the high Arctic: the importance of the experimental approach |
topic_facet |
Competition Facilitation Luzula confusa Removal experiment Salix polaris |
description |
In the last decade, plant ecologists have focussed more on the occurrence of positive plant-plant interactions than ever before. Especially in severe environments, such as the Arctic, species removal experiments tend to find facilitative rather than competitive effects, casting doubt on the importance of competition under extreme growing conditions. Two approaches to measure plant-plant interactions presented here reveal that competition affects plant growth even in the high Arctic. Luzula confusa and Salix polaris show a reduced growth in mixed stands compared with pure. This competition effect is not detected in a removal experiment, which inevitably also alters site microclimate. Indeed, in the latter experiment, facilitative effects of Luzula on Salix were found. Evidently, both facilitation and competition are acting and important. Causes and implications are discussed using a conceptual model derived from that of Brooker and Callaghan (1998). |
format |
Article in Journal/Newspaper |
author |
Dormann, Carsten Brooker, R.W. |
author_facet |
Dormann, Carsten Brooker, R.W. |
author_sort |
Dormann, Carsten |
title |
Facilitation and competition in the high Arctic: the importance of the experimental approach |
title_short |
Facilitation and competition in the high Arctic: the importance of the experimental approach |
title_full |
Facilitation and competition in the high Arctic: the importance of the experimental approach |
title_fullStr |
Facilitation and competition in the high Arctic: the importance of the experimental approach |
title_full_unstemmed |
Facilitation and competition in the high Arctic: the importance of the experimental approach |
title_sort |
facilitation and competition in the high arctic: the importance of the experimental approach |
publisher |
Elsevier |
publishDate |
2002 |
url |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=5440 https://doi.org/10.1016/S1146-609X(02)01158-X |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Luzula confusa Salix polaris |
genre_facet |
Arctic Luzula confusa Salix polaris |
op_source |
ISSN: 1146-609x |
op_relation |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=5440 https://dx.doi.org/10.1016/S1146-609X(02)01158-X |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/S1146-609X(02)01158-X |
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Acta Oecologica |
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23 |
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5 |
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297 |
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301 |
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1784888114798395392 |