Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach
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/10.1111/jvs.13118 http://hdl.handle.net/11449/240885 |
Resumo: | Aim: Woody-plant encroachment is a reality in many savannas worldwide, leading savannas to become replaced by forest ecosystems. As tree density and cover increase, increased shade and litter deposition may suppress the savanna's community of low-lying plants. By using field manipulation, we tested shading and litter effects, alone and in combination, on the savanna's ground-layer plant community. We investigated how changes in these environmental factors may affect the composition, structure, and above-ground biomass in the plant community of a species-rich Neotropical savanna. Location: Savanna patches in the Cerrado, southeastern Brazil. Methods: Annual surveys of the herbaceous–shrub layer in a three-year field manipulation experiment examining shading and litter deposition. Results: Shade negatively affected all evaluated parameters, while litter addition had only minor effects. The largest losses of richness, density, and cover occurred in forbs and grasses. Increased shade resulted in a sharp decrease in the above-ground biomass of monocots. Conclusions: Our results show that light is a strong environmental filter for the ground-layer community. The reductions in grass cover and biomass under shade treatments likely altered ecosystem functioning. Woody encroachment can thus be considered to represent a process that can alter the structure and functioning of savannas. Management interventions should therefore be taken to prevent woody encroachment or mitigate its harmful effects on savanna biodiversity and ecosystem functioning. |
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spelling |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approachabove-ground biomassenvironmental filteringlitter depositionsavannashade tolerancewoody encroachmentAim: Woody-plant encroachment is a reality in many savannas worldwide, leading savannas to become replaced by forest ecosystems. As tree density and cover increase, increased shade and litter deposition may suppress the savanna's community of low-lying plants. By using field manipulation, we tested shading and litter effects, alone and in combination, on the savanna's ground-layer plant community. We investigated how changes in these environmental factors may affect the composition, structure, and above-ground biomass in the plant community of a species-rich Neotropical savanna. Location: Savanna patches in the Cerrado, southeastern Brazil. Methods: Annual surveys of the herbaceous–shrub layer in a three-year field manipulation experiment examining shading and litter deposition. Results: Shade negatively affected all evaluated parameters, while litter addition had only minor effects. The largest losses of richness, density, and cover occurred in forbs and grasses. Increased shade resulted in a sharp decrease in the above-ground biomass of monocots. Conclusions: Our results show that light is a strong environmental filter for the ground-layer community. The reductions in grass cover and biomass under shade treatments likely altered ecosystem functioning. Woody encroachment can thus be considered to represent a process that can alter the structure and functioning of savannas. Management interventions should therefore be taken to prevent woody encroachment or mitigate its harmful effects on savanna biodiversity and ecosystem functioning.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Instituto de Biociências de Rio Claro Universidade Estadual Paulista (UNESP)Instituto de Biologia Universidade de Campinas (UNICAMP)Departamento de Biologia Aplicada Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP)Departamento de Ciências Biológicas Faculdade de Ciências e Letras Universidade Estadual Paulista (UNESP)Instituto de Biociências de Rio Claro Universidade Estadual Paulista (UNESP)Departamento de Biologia Aplicada Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP)Departamento de Ciências Biológicas Faculdade de Ciências e Letras Universidade Estadual Paulista (UNESP)CNPq: 152904/2016-6FAPESP: 2013/18049-6FAPESP: 2017/03450-8CNPq: 302897/2018-6Universidade Estadual Paulista (UNESP)Universidade Estadual de Campinas (UNICAMP)Pinheiro, Luiz Felipe Souza [UNESP]Pilon, Natashi Aparecida LimaRossatto, Davi Rodrigo [UNESP]Kolb, Rosana Marta [UNESP]2023-03-01T20:37:06Z2023-03-01T20:37:06Z2022-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1111/jvs.13118Journal of Vegetation Science, v. 33, n. 2, 2022.1654-11031100-9233http://hdl.handle.net/11449/24088510.1111/jvs.131182-s2.0-85128810054Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Vegetation Scienceinfo:eu-repo/semantics/openAccess2024-06-06T13:05:10Zoai:repositorio.unesp.br:11449/240885Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:35:12.933829Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach |
title |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach |
spellingShingle |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach Pinheiro, Luiz Felipe Souza [UNESP] above-ground biomass environmental filtering litter deposition savanna shade tolerance woody encroachment |
title_short |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach |
title_full |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach |
title_fullStr |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach |
title_full_unstemmed |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach |
title_sort |
Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach |
author |
Pinheiro, Luiz Felipe Souza [UNESP] |
author_facet |
Pinheiro, Luiz Felipe Souza [UNESP] Pilon, Natashi Aparecida Lima Rossatto, Davi Rodrigo [UNESP] Kolb, Rosana Marta [UNESP] |
author_role |
author |
author2 |
Pilon, Natashi Aparecida Lima Rossatto, Davi Rodrigo [UNESP] Kolb, Rosana Marta [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Estadual de Campinas (UNICAMP) |
dc.contributor.author.fl_str_mv |
Pinheiro, Luiz Felipe Souza [UNESP] Pilon, Natashi Aparecida Lima Rossatto, Davi Rodrigo [UNESP] Kolb, Rosana Marta [UNESP] |
dc.subject.por.fl_str_mv |
above-ground biomass environmental filtering litter deposition savanna shade tolerance woody encroachment |
topic |
above-ground biomass environmental filtering litter deposition savanna shade tolerance woody encroachment |
description |
Aim: Woody-plant encroachment is a reality in many savannas worldwide, leading savannas to become replaced by forest ecosystems. As tree density and cover increase, increased shade and litter deposition may suppress the savanna's community of low-lying plants. By using field manipulation, we tested shading and litter effects, alone and in combination, on the savanna's ground-layer plant community. We investigated how changes in these environmental factors may affect the composition, structure, and above-ground biomass in the plant community of a species-rich Neotropical savanna. Location: Savanna patches in the Cerrado, southeastern Brazil. Methods: Annual surveys of the herbaceous–shrub layer in a three-year field manipulation experiment examining shading and litter deposition. Results: Shade negatively affected all evaluated parameters, while litter addition had only minor effects. The largest losses of richness, density, and cover occurred in forbs and grasses. Increased shade resulted in a sharp decrease in the above-ground biomass of monocots. Conclusions: Our results show that light is a strong environmental filter for the ground-layer community. The reductions in grass cover and biomass under shade treatments likely altered ecosystem functioning. Woody encroachment can thus be considered to represent a process that can alter the structure and functioning of savannas. Management interventions should therefore be taken to prevent woody encroachment or mitigate its harmful effects on savanna biodiversity and ecosystem functioning. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-03-01 2023-03-01T20:37:06Z 2023-03-01T20:37:06Z |
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/10.1111/jvs.13118 Journal of Vegetation Science, v. 33, n. 2, 2022. 1654-1103 1100-9233 http://hdl.handle.net/11449/240885 10.1111/jvs.13118 2-s2.0-85128810054 |
url |
http://dx.doi.org/10.1111/jvs.13118 http://hdl.handle.net/11449/240885 |
identifier_str_mv |
Journal of Vegetation Science, v. 33, n. 2, 2022. 1654-1103 1100-9233 10.1111/jvs.13118 2-s2.0-85128810054 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Vegetation Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1808129339233927168 |