Shade drives plant community changes of ground-layer savanna vegetation: Short-term changes under an experimental approach

Detalhes bibliográficos
Autor(a) principal: Pinheiro, Luiz Felipe Souza [UNESP]
Data de Publicação: 2022
Outros Autores: Pilon, Natashi Aparecida Lima, Rossatto, Davi Rodrigo [UNESP], Kolb, Rosana Marta [UNESP]
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
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