Dynamique Reproductive de la Camarine Noire (Empetrum nigrum L.) le Long d'une Chronoséquence de Feu à la Limite Des Arbres
The relative importance of sexual reproduction and clonal growth for the long-term maintenance of crowberry populations is poorly understood. Our objective was to characterize reproductive output, recruitment and clonal growth in different populations along a fire chronosequence at the treeline. Our...
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Centre d'études nordiques, Université Laval
2016
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Online Access: | https://doi.org/10.1080/11956860.2016.1232578 |
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ftbioone:10.1080/11956860.2016.1232578 2024-06-02T08:05:39+00:00 Dynamique Reproductive de la Camarine Noire (Empetrum nigrum L.) le Long d'une Chronoséquence de Feu à la Limite Des Arbres Marie-Pascale Villeneuve-Simard Stéphane Boudreau Marie-Pascale Villeneuve-Simard Stéphane Boudreau world 2016-01-01 text/HTML https://doi.org/10.1080/11956860.2016.1232578 en eng Centre d'études nordiques, Université Laval doi:10.1080/11956860.2016.1232578 All rights reserved. https://doi.org/10.1080/11956860.2016.1232578 Text 2016 ftbioone https://doi.org/10.1080/11956860.2016.1232578 2024-05-07T00:51:19Z The relative importance of sexual reproduction and clonal growth for the long-term maintenance of crowberry populations is poorly understood. Our objective was to characterize reproductive output, recruitment and clonal growth in different populations along a fire chronosequence at the treeline. Our research hypothesis was that sexual reproduction would be more important in younger sites, but that clonal growth would be prevalent in older sites. We quantified cover and reproductive output and reconstructed the establishment chronology of the crowberry populations. The positive relationship between crowberry cover and site age is mainly attributable to the presence of a tree cover at older sites. Fruit production, lower in forested sites, and seed viability were not related to site age. Recruitment of individuals appeared to be relatively similar between sites, while the number of clonal individuals increased with the time elapsed since the last fire. Our results partially support our research hypothesis. While clonal growth is more important for population maintenance at older sites, the species keeps investing in sexual reproduction, even when dominant. Text Crowberry Empetrum nigrum BioOne Online Journals Noire ENVELOPE(140.019,140.019,-66.666,-66.666) Écoscience 23 3-4 57 66 |
institution |
Open Polar |
collection |
BioOne Online Journals |
op_collection_id |
ftbioone |
language |
English |
description |
The relative importance of sexual reproduction and clonal growth for the long-term maintenance of crowberry populations is poorly understood. Our objective was to characterize reproductive output, recruitment and clonal growth in different populations along a fire chronosequence at the treeline. Our research hypothesis was that sexual reproduction would be more important in younger sites, but that clonal growth would be prevalent in older sites. We quantified cover and reproductive output and reconstructed the establishment chronology of the crowberry populations. The positive relationship between crowberry cover and site age is mainly attributable to the presence of a tree cover at older sites. Fruit production, lower in forested sites, and seed viability were not related to site age. Recruitment of individuals appeared to be relatively similar between sites, while the number of clonal individuals increased with the time elapsed since the last fire. Our results partially support our research hypothesis. While clonal growth is more important for population maintenance at older sites, the species keeps investing in sexual reproduction, even when dominant. |
author2 |
Marie-Pascale Villeneuve-Simard Stéphane Boudreau |
format |
Text |
author |
Marie-Pascale Villeneuve-Simard Stéphane Boudreau |
spellingShingle |
Marie-Pascale Villeneuve-Simard Stéphane Boudreau Dynamique Reproductive de la Camarine Noire (Empetrum nigrum L.) le Long d'une Chronoséquence de Feu à la Limite Des Arbres |
author_facet |
Marie-Pascale Villeneuve-Simard Stéphane Boudreau |
author_sort |
Marie-Pascale Villeneuve-Simard |
title |
Dynamique Reproductive de la Camarine Noire (Empetrum nigrum L.) le Long d'une Chronoséquence de Feu à la Limite Des Arbres |
title_short |
Dynamique Reproductive de la Camarine Noire (Empetrum nigrum L.) le Long d'une Chronoséquence de Feu à la Limite Des Arbres |
title_full |
Dynamique Reproductive de la Camarine Noire (Empetrum nigrum L.) le Long d'une Chronoséquence de Feu à la Limite Des Arbres |
title_fullStr |
Dynamique Reproductive de la Camarine Noire (Empetrum nigrum L.) le Long d'une Chronoséquence de Feu à la Limite Des Arbres |
title_full_unstemmed |
Dynamique Reproductive de la Camarine Noire (Empetrum nigrum L.) le Long d'une Chronoséquence de Feu à la Limite Des Arbres |
title_sort |
dynamique reproductive de la camarine noire (empetrum nigrum l.) le long d'une chronoséquence de feu à la limite des arbres |
publisher |
Centre d'études nordiques, Université Laval |
publishDate |
2016 |
url |
https://doi.org/10.1080/11956860.2016.1232578 |
op_coverage |
world |
long_lat |
ENVELOPE(140.019,140.019,-66.666,-66.666) |
geographic |
Noire |
geographic_facet |
Noire |
genre |
Crowberry Empetrum nigrum |
genre_facet |
Crowberry Empetrum nigrum |
op_source |
https://doi.org/10.1080/11956860.2016.1232578 |
op_relation |
doi:10.1080/11956860.2016.1232578 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1080/11956860.2016.1232578 |
container_title |
Écoscience |
container_volume |
23 |
container_issue |
3-4 |
container_start_page |
57 |
op_container_end_page |
66 |
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1800750510785953792 |