Anthropogenic fires increase alien and native annual species in the Chilean coastal matorral
10 páginas, 3 figuras, 1 tabla.
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| Format: | artículo biblioteca |
| Language: | English |
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Blackwell Publishing
2011-01
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| Subjects: | Biological invasions, Central Chile, Disturbance ecology, Mediterranean-type ecosystems, Plant invasions, Propagule pressure, Seedling emergence, |
| Online Access: | http://hdl.handle.net/10261/38744 http://dx.doi.org/10.13039/501100002850 http://dx.doi.org/10.13039/501100005853 http://dx.doi.org/10.13039/501100002848 |
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dig-cide-es-10261-387442019-10-01T12:33:13Z Anthropogenic fires increase alien and native annual species in the Chilean coastal matorral Gómez-González, Susana Torres-Diaz, Cristian Valencia, Graciela Torres-Morales, Patricio Cavieres, Lohengrin A. Pausas, J. G. Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) Universidad de Chile Comisión Nacional de Investigación Científica y Tecnológica (Chile) Instituto de Ecología y Biodiversidad (Chile) Biological invasions Central Chile Disturbance ecology Mediterranean-type ecosystems Plant invasions Propagule pressure Seedling emergence 10 páginas, 3 figuras, 1 tabla. Aim we tested the hypothesis that anthropogenic fires favour the successful establishment of alien annual species to the detriment of natives in the Chilean coastal matorral.Location Valparaíso Region, central Chile.Methods We sampled seed rain, seedbank emergence and establishment of species in four paired burned and unburned areas and compared (using GLMM) fire resistance and propagule arrival of alien and native species. To assess the relative importance of seed dispersal and seedbank survival in explaining plant establishment after fire, we compared seed rain and seedbank structure with post-fire vegetation using ordination analyses.Results Fire did not change the proportion of alien species in the coastal matorral. However, fire increased the number of annual species (natives and aliens) of which 87% were aliens. Fire reduced the alien seedbank and not the native seedbank, but alien species remained dominant in burned soil samples (66% of the total species richness). Seed rain was higher for alien annuals than for native annuals or perennials, thus contributing to their establishment after fire. Nevertheless, seed rain was less important than seedbank survival in explaining plant establishment in burned areas.Main conclusions Anthropogenic fires favoured alien and native annuals. Thus, fire did not increase the alien/native ratio but increased the richness of alien species. The successful establishment of alien annuals was attributable to their ability to maintain rich seedbanks in burned areas and to the greater propagule arrival compared to native species. The native seedbank also survived fire, indicating that the herbaceous community has become highly resilient after centuries of human disturbances. Our results demonstrate that fire is a relevant factor for the maintenance of alien-dominated grasslands in the matorral and highlight the importance of considering the interactive effect of seed rain and seedbank survival to understand plant invasion patterns in fire-prone ecosystems. We thank L. Bacigalupe and A. Fajardo for helping with statistical analyses, L. Suárez and M. Apablaza for field assistance, and W. Ridenour for English edition. The Department of Fire Management of CONAF cooperated with the searching of study sites. Plant species were identified by A. Marticorena and M. Negritto. Information on dispersion syndrome of alien plants was extracted from the database generated by the ALARM Project (Assessing LArge scale environmental Risks for biodiversity with tested Methods; GOCE-CT-2003-506675; http://www.alarmproject.net). Susana G.-G. holds a postdoctoral grant FONDECYT-3090018. This study was funded by MECESUP (UCO-0214), CONICYT (AT-24060008), and the Institute of Ecology and Biodiversity (IEB; P05-002 F ICM). Peer reviewed 2011-08-18T09:07:44Z 2011-08-18T09:07:44Z 2011-01 artículo http://purl.org/coar/resource_type/c_6501 Diversity and Distributions. A Journal of Conservation Biogeography 17(1): 58-67 (2011) 1366-9516 http://hdl.handle.net/10261/38744 10.1111/j.1472-4642.2010.00728.x 1472-4642 http://dx.doi.org/10.13039/501100002850 http://dx.doi.org/10.13039/501100005853 http://dx.doi.org/10.13039/501100002848 en http://dx.doi.org/10.1111/j.1472-4642.2010.00728.x none Blackwell Publishing |
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Biological invasions Central Chile Disturbance ecology Mediterranean-type ecosystems Plant invasions Propagule pressure Seedling emergence Biological invasions Central Chile Disturbance ecology Mediterranean-type ecosystems Plant invasions Propagule pressure Seedling emergence |
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Biological invasions Central Chile Disturbance ecology Mediterranean-type ecosystems Plant invasions Propagule pressure Seedling emergence Biological invasions Central Chile Disturbance ecology Mediterranean-type ecosystems Plant invasions Propagule pressure Seedling emergence Gómez-González, Susana Torres-Diaz, Cristian Valencia, Graciela Torres-Morales, Patricio Cavieres, Lohengrin A. Pausas, J. G. Anthropogenic fires increase alien and native annual species in the Chilean coastal matorral |
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10 páginas, 3 figuras, 1 tabla. |
| author2 |
Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) |
| author_facet |
Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) Gómez-González, Susana Torres-Diaz, Cristian Valencia, Graciela Torres-Morales, Patricio Cavieres, Lohengrin A. Pausas, J. G. |
| format |
artículo |
| topic_facet |
Biological invasions Central Chile Disturbance ecology Mediterranean-type ecosystems Plant invasions Propagule pressure Seedling emergence |
| author |
Gómez-González, Susana Torres-Diaz, Cristian Valencia, Graciela Torres-Morales, Patricio Cavieres, Lohengrin A. Pausas, J. G. |
| author_sort |
Gómez-González, Susana |
| title |
Anthropogenic fires increase alien and native annual species in the Chilean coastal matorral |
| title_short |
Anthropogenic fires increase alien and native annual species in the Chilean coastal matorral |
| title_full |
Anthropogenic fires increase alien and native annual species in the Chilean coastal matorral |
| title_fullStr |
Anthropogenic fires increase alien and native annual species in the Chilean coastal matorral |
| title_full_unstemmed |
Anthropogenic fires increase alien and native annual species in the Chilean coastal matorral |
| title_sort |
anthropogenic fires increase alien and native annual species in the chilean coastal matorral |
| publisher |
Blackwell Publishing |
| publishDate |
2011-01 |
| url |
http://hdl.handle.net/10261/38744 http://dx.doi.org/10.13039/501100002850 http://dx.doi.org/10.13039/501100005853 http://dx.doi.org/10.13039/501100002848 |
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