Fire and herbivory shape belowground bud banks in a semi-arid African savanna
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2989/10220119.2021.1982004 http://hdl.handle.net/11449/222761 |
Resumo: | Fire and herbivory are major drivers in tropical savanna ecosystems and they selected a flora composed of species able to cope with recurrent aboveground biomass removal. Renewal of the herbaceous stratum is made possible by resprouting, mostly through a belowground bud bank. Evaluating the impacts of disturbances on the bud bank can assist in predicting post-disturbance responses and system resilience. In a semi-arid savanna, we aimed to verify whether lower fire frequency, fire and herbivory exclusion could affect belowground bud bank and organs diversity and consequently, the resprouting potential. Lower fire frequency or suppression and absence of herbivory were expected to reduce the bud bank density, which was confirmed by our results. If the fire is suppressed or fire frequency is reduced, the total, graminoid and the shrub bud bank decreased, whereas herbivory exclusion resulted in total and a forb bud bank of lower densities. Belowground buds were identified in non-woody and woody rhizomes, stolons, root crowns, and bulbs or corms. Despite having bud banks of lower density, disturbance exclusion promoted belowground biomass accumulation. Our results indicated the importance of maintaining the endogenous disturbances to the preservation of the belowground community and regeneration strategy, guaranteeing resilience in semi-arid savanna communities. |
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Fire and herbivory shape belowground bud banks in a semi-arid African savannabelowground bud-bearing organsfire exclusionherbivory exclusionnatural disturbancesresprouting abilityFire and herbivory are major drivers in tropical savanna ecosystems and they selected a flora composed of species able to cope with recurrent aboveground biomass removal. Renewal of the herbaceous stratum is made possible by resprouting, mostly through a belowground bud bank. Evaluating the impacts of disturbances on the bud bank can assist in predicting post-disturbance responses and system resilience. In a semi-arid savanna, we aimed to verify whether lower fire frequency, fire and herbivory exclusion could affect belowground bud bank and organs diversity and consequently, the resprouting potential. Lower fire frequency or suppression and absence of herbivory were expected to reduce the bud bank density, which was confirmed by our results. If the fire is suppressed or fire frequency is reduced, the total, graminoid and the shrub bud bank decreased, whereas herbivory exclusion resulted in total and a forb bud bank of lower densities. Belowground buds were identified in non-woody and woody rhizomes, stolons, root crowns, and bulbs or corms. Despite having bud banks of lower density, disturbance exclusion promoted belowground biomass accumulation. Our results indicated the importance of maintaining the endogenous disturbances to the preservation of the belowground community and regeneration strategy, guaranteeing resilience in semi-arid savanna communities.Instituto de Biociências Universidade Estadual Paulista (UNESP)Unit for Environmental Sciences and Management North-West UniversityInstituto de Biociências Universidade Estadual Paulista (UNESP)Universidade Estadual Paulista (UNESP)North-West UniversityBombo, A. B. [UNESP]Siebert, F.Fidelis, A. [UNESP]2022-04-28T19:46:34Z2022-04-28T19:46:34Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article16-26http://dx.doi.org/10.2989/10220119.2021.1982004African Journal of Range and Forage Science, v. 39, n. 1, p. 16-26, 2022.1727-93801022-0119http://hdl.handle.net/11449/22276110.2989/10220119.2021.19820042-s2.0-85118241305Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAfrican Journal of Range and Forage Scienceinfo:eu-repo/semantics/openAccess2022-04-28T19:46:34Zoai:repositorio.unesp.br:11449/222761Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:26:59.887804Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Fire and herbivory shape belowground bud banks in a semi-arid African savanna |
title |
Fire and herbivory shape belowground bud banks in a semi-arid African savanna |
spellingShingle |
Fire and herbivory shape belowground bud banks in a semi-arid African savanna Bombo, A. B. [UNESP] belowground bud-bearing organs fire exclusion herbivory exclusion natural disturbances resprouting ability |
title_short |
Fire and herbivory shape belowground bud banks in a semi-arid African savanna |
title_full |
Fire and herbivory shape belowground bud banks in a semi-arid African savanna |
title_fullStr |
Fire and herbivory shape belowground bud banks in a semi-arid African savanna |
title_full_unstemmed |
Fire and herbivory shape belowground bud banks in a semi-arid African savanna |
title_sort |
Fire and herbivory shape belowground bud banks in a semi-arid African savanna |
author |
Bombo, A. B. [UNESP] |
author_facet |
Bombo, A. B. [UNESP] Siebert, F. Fidelis, A. [UNESP] |
author_role |
author |
author2 |
Siebert, F. Fidelis, A. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) North-West University |
dc.contributor.author.fl_str_mv |
Bombo, A. B. [UNESP] Siebert, F. Fidelis, A. [UNESP] |
dc.subject.por.fl_str_mv |
belowground bud-bearing organs fire exclusion herbivory exclusion natural disturbances resprouting ability |
topic |
belowground bud-bearing organs fire exclusion herbivory exclusion natural disturbances resprouting ability |
description |
Fire and herbivory are major drivers in tropical savanna ecosystems and they selected a flora composed of species able to cope with recurrent aboveground biomass removal. Renewal of the herbaceous stratum is made possible by resprouting, mostly through a belowground bud bank. Evaluating the impacts of disturbances on the bud bank can assist in predicting post-disturbance responses and system resilience. In a semi-arid savanna, we aimed to verify whether lower fire frequency, fire and herbivory exclusion could affect belowground bud bank and organs diversity and consequently, the resprouting potential. Lower fire frequency or suppression and absence of herbivory were expected to reduce the bud bank density, which was confirmed by our results. If the fire is suppressed or fire frequency is reduced, the total, graminoid and the shrub bud bank decreased, whereas herbivory exclusion resulted in total and a forb bud bank of lower densities. Belowground buds were identified in non-woody and woody rhizomes, stolons, root crowns, and bulbs or corms. Despite having bud banks of lower density, disturbance exclusion promoted belowground biomass accumulation. Our results indicated the importance of maintaining the endogenous disturbances to the preservation of the belowground community and regeneration strategy, guaranteeing resilience in semi-arid savanna communities. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-28T19:46:34Z 2022-04-28T19:46:34Z 2022-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.2989/10220119.2021.1982004 African Journal of Range and Forage Science, v. 39, n. 1, p. 16-26, 2022. 1727-9380 1022-0119 http://hdl.handle.net/11449/222761 10.2989/10220119.2021.1982004 2-s2.0-85118241305 |
url |
http://dx.doi.org/10.2989/10220119.2021.1982004 http://hdl.handle.net/11449/222761 |
identifier_str_mv |
African Journal of Range and Forage Science, v. 39, n. 1, p. 16-26, 2022. 1727-9380 1022-0119 10.2989/10220119.2021.1982004 2-s2.0-85118241305 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
African Journal of Range and Forage Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
16-26 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129070613921792 |