The dynamics of three shrub species in a fire-prone temperate savanna: the interplay between the seed bank, seed rain and fire regime
A model was developed to assess how the seed rain and fire regime affect seed bank dynamics and seedling establishment of three native shrub species (Acanthostyles buniifolius, Baccharis pingraea and Baccharis dracunculifolia) with different regeneration strategies, in temperate South American savan...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Springer
2018
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| Materias: | |
| Acceso en línea: | https://link.springer.com/article/10.1007/s11258-012-0147-9 http://hdl.handle.net/20.500.12123/3895 https://doi.org/10.1007/s11258-012-0147-9 |
| _version_ | 1855483324945924096 |
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| author | Galindez, Guadalupe Ortega Baes, Francisco Pablo Scopel, Ana Leonor Hutchings, Michael J. |
| author_browse | Galindez, Guadalupe Hutchings, Michael J. Ortega Baes, Francisco Pablo Scopel, Ana Leonor |
| author_facet | Galindez, Guadalupe Ortega Baes, Francisco Pablo Scopel, Ana Leonor Hutchings, Michael J. |
| author_sort | Galindez, Guadalupe |
| collection | INTA Digital |
| description | A model was developed to assess how the seed rain and fire regime affect seed bank dynamics and seedling establishment of three native shrub species (Acanthostyles buniifolius, Baccharis pingraea and Baccharis dracunculifolia) with different regeneration strategies, in temperate South American savanna. Seed bank and seed rain were quantified for each species under different fire regimes, and their relative roles in regeneration were evaluated. All species had short-term persistent seed banks and high annual variability in seed production. A high proportion of seeds deposited in the seed rain produced seedlings after fire; few entered the soil seed bank. Fire killed a high proportion of the seeds in the soil seed bank. Seedlings derived from the seed rain had a higher probability of surviving for 2 years than seedlings emerging from the soil seed bank. In the absence of fire, establishment depended on germination both from the seed rain and the soil seed bank, whereas with annual fire, establishment was primarily dependent on germination of seeds arriving in the annual seed rain, regardless of species’ regeneration strategies. These results help to explain changes in the vegetation of South American temperate savannas as a result of changes in fire regime and grazing management during the last 50 years. By revealing the crucial roles of the soil seed bank and seed rain in regeneration, this study provides vital information for the development of appropriate management practices to control populations of shrub species with different regeneration strategies in South American temperate savannas. |
| format | Artículo |
| id | INTA3895 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA38952018-11-14T16:45:56Z The dynamics of three shrub species in a fire-prone temperate savanna: the interplay between the seed bank, seed rain and fire regime Galindez, Guadalupe Ortega Baes, Francisco Pablo Scopel, Ana Leonor Hutchings, Michael J. Arbustos Organismos Indígenas Zona Templada Sabanas Banco de Genes Incendios Shrubs Indigenous Organisms Temperate Zones Savannas Gene Banks Fires Especies Nativas Bancos de Semillas A model was developed to assess how the seed rain and fire regime affect seed bank dynamics and seedling establishment of three native shrub species (Acanthostyles buniifolius, Baccharis pingraea and Baccharis dracunculifolia) with different regeneration strategies, in temperate South American savanna. Seed bank and seed rain were quantified for each species under different fire regimes, and their relative roles in regeneration were evaluated. All species had short-term persistent seed banks and high annual variability in seed production. A high proportion of seeds deposited in the seed rain produced seedlings after fire; few entered the soil seed bank. Fire killed a high proportion of the seeds in the soil seed bank. Seedlings derived from the seed rain had a higher probability of surviving for 2 years than seedlings emerging from the soil seed bank. In the absence of fire, establishment depended on germination both from the seed rain and the soil seed bank, whereas with annual fire, establishment was primarily dependent on germination of seeds arriving in the annual seed rain, regardless of species’ regeneration strategies. These results help to explain changes in the vegetation of South American temperate savannas as a result of changes in fire regime and grazing management during the last 50 years. By revealing the crucial roles of the soil seed bank and seed rain in regeneration, this study provides vital information for the development of appropriate management practices to control populations of shrub species with different regeneration strategies in South American temperate savannas. Instituto de Recursos Biológicos Fil: Galindez, Guadalupe. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos. Banco Base de Germoplasma; Argentina Fil: Ortega Baes, Francisco Pablo. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Laboratorio de Investigaciones Botánicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Scopel, Ana Leonor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina Fil: Hutchings, Michael J. University Of Sussex. School of Life Sciences; Reino Unido 2018-11-14T16:44:16Z 2018-11-14T16:44:16Z 2013-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://link.springer.com/article/10.1007/s11258-012-0147-9 http://hdl.handle.net/20.500.12123/3895 1385-0237 1573-5052 https://doi.org/10.1007/s11258-012-0147-9 eng info:eu-repo/semantics/restrictedAccess application/pdf Springer Plant Ecology 214 (1) : 75–86 (January 2013) |
| spellingShingle | Arbustos Organismos Indígenas Zona Templada Sabanas Banco de Genes Incendios Shrubs Indigenous Organisms Temperate Zones Savannas Gene Banks Fires Especies Nativas Bancos de Semillas Galindez, Guadalupe Ortega Baes, Francisco Pablo Scopel, Ana Leonor Hutchings, Michael J. The dynamics of three shrub species in a fire-prone temperate savanna: the interplay between the seed bank, seed rain and fire regime |
| title | The dynamics of three shrub species in a fire-prone temperate savanna: the interplay between the seed bank, seed rain and fire regime |
| title_full | The dynamics of three shrub species in a fire-prone temperate savanna: the interplay between the seed bank, seed rain and fire regime |
| title_fullStr | The dynamics of three shrub species in a fire-prone temperate savanna: the interplay between the seed bank, seed rain and fire regime |
| title_full_unstemmed | The dynamics of three shrub species in a fire-prone temperate savanna: the interplay between the seed bank, seed rain and fire regime |
| title_short | The dynamics of three shrub species in a fire-prone temperate savanna: the interplay between the seed bank, seed rain and fire regime |
| title_sort | dynamics of three shrub species in a fire prone temperate savanna the interplay between the seed bank seed rain and fire regime |
| topic | Arbustos Organismos Indígenas Zona Templada Sabanas Banco de Genes Incendios Shrubs Indigenous Organisms Temperate Zones Savannas Gene Banks Fires Especies Nativas Bancos de Semillas |
| url | https://link.springer.com/article/10.1007/s11258-012-0147-9 http://hdl.handle.net/20.500.12123/3895 https://doi.org/10.1007/s11258-012-0147-9 |
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