Biodiversity patterns and continental insularity in the tropical High Andes
Alpine areas of the tropical Andes constitute the largest of all tropical alpine regions worldwide. They experience a particularly harsh climate, and they are fragmented into tropical alpine islands at various spatial scales. These factors generate unique patterns of continental insularity, whose im...
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ftird:oai:ird.fr:fdi:010063090 2023-05-15T14:14:37+02:00 Biodiversity patterns and continental insularity in the tropical High Andes Anthelme, Fabien Jacobsen, D. Macek, P. Meneses, R. I. Moret, P. Beck, S. Dangles, Olivier ANDES ZONE TROPICALE 2014 http://www.documentation.ird.fr/hor/fdi:010063090 EN eng http://www.documentation.ird.fr/hor/fdi:010063090 oai:ird.fr:fdi:010063090 Anthelme Fabien, Jacobsen D., Macek P., Meneses R. I., Moret P., Beck S., Dangles Olivier. Biodiversity patterns and continental insularity in the tropical High Andes. Arctic Antarctic and Alpine Research, 2014, 46 (4), p. 811-828. text 2014 ftird 2020-08-21T06:53:09Z Alpine areas of the tropical Andes constitute the largest of all tropical alpine regions worldwide. They experience a particularly harsh climate, and they are fragmented into tropical alpine islands at various spatial scales. These factors generate unique patterns of continental insularity, whose impacts on biodiversity remain to be examined precisely. By reviewing existing literature and by presenting unpublished data on beta-diversity and endemism for a wide array of taxonomic groups, we aimed at providing a clear, overall picture of the isolation-biodiversity relationship in the tropical alpine environments of the Andes. Our analyses showed that (1) taxa with better dispersal capacities and wider distributions (e.g., grasses and birds) were less restricted to alpine areas at local scale; (2) similarity among communities decreased with spatial distance between isolated alpine areas; and (3) endemism reached a peak in small alpine areas strongly isolated from main alpine islands. These results pinpoint continental insularity as a powerful driver of biodiversity in the tropical High Andes. A combination of human activities and warming is expected to increase the effects of continental insularity in the next decades, especially by amplifying the resistance of the lowland matrix that surrounds tropical alpine islands. Text Antarctic and Alpine Research Arctic IRD (Institute de recherche pour le développement): Horizon |
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English |
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Alpine areas of the tropical Andes constitute the largest of all tropical alpine regions worldwide. They experience a particularly harsh climate, and they are fragmented into tropical alpine islands at various spatial scales. These factors generate unique patterns of continental insularity, whose impacts on biodiversity remain to be examined precisely. By reviewing existing literature and by presenting unpublished data on beta-diversity and endemism for a wide array of taxonomic groups, we aimed at providing a clear, overall picture of the isolation-biodiversity relationship in the tropical alpine environments of the Andes. Our analyses showed that (1) taxa with better dispersal capacities and wider distributions (e.g., grasses and birds) were less restricted to alpine areas at local scale; (2) similarity among communities decreased with spatial distance between isolated alpine areas; and (3) endemism reached a peak in small alpine areas strongly isolated from main alpine islands. These results pinpoint continental insularity as a powerful driver of biodiversity in the tropical High Andes. A combination of human activities and warming is expected to increase the effects of continental insularity in the next decades, especially by amplifying the resistance of the lowland matrix that surrounds tropical alpine islands. |
format |
Text |
author |
Anthelme, Fabien Jacobsen, D. Macek, P. Meneses, R. I. Moret, P. Beck, S. Dangles, Olivier |
spellingShingle |
Anthelme, Fabien Jacobsen, D. Macek, P. Meneses, R. I. Moret, P. Beck, S. Dangles, Olivier Biodiversity patterns and continental insularity in the tropical High Andes |
author_facet |
Anthelme, Fabien Jacobsen, D. Macek, P. Meneses, R. I. Moret, P. Beck, S. Dangles, Olivier |
author_sort |
Anthelme, Fabien |
title |
Biodiversity patterns and continental insularity in the tropical High Andes |
title_short |
Biodiversity patterns and continental insularity in the tropical High Andes |
title_full |
Biodiversity patterns and continental insularity in the tropical High Andes |
title_fullStr |
Biodiversity patterns and continental insularity in the tropical High Andes |
title_full_unstemmed |
Biodiversity patterns and continental insularity in the tropical High Andes |
title_sort |
biodiversity patterns and continental insularity in the tropical high andes |
publishDate |
2014 |
url |
http://www.documentation.ird.fr/hor/fdi:010063090 |
op_coverage |
ANDES ZONE TROPICALE |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010063090 oai:ird.fr:fdi:010063090 Anthelme Fabien, Jacobsen D., Macek P., Meneses R. I., Moret P., Beck S., Dangles Olivier. Biodiversity patterns and continental insularity in the tropical High Andes. Arctic Antarctic and Alpine Research, 2014, 46 (4), p. 811-828. |
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