The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1111/btp.12940 http://hdl.handle.net/11449/206075 |
Resumo: | Exotic grasses and high-nutrient availability are common factors that may limit recovery of herbaceous diversity in derived savannas, while tree encroachment is a threat to diversity in old-growth savannas. To understand the impacts of these factors on herbaceous communities, we studied the effect of nutrient addition, and the resulting increase in the exotic grass, Melinis minutiflora, at a savanna-forest boundary in the Brazilian Cerrado. We inventoried richness of reproductive herbs, tree basal area and cover of the exotic grass, Melinis minutiflora, in each plot. Nutrient addition caused a large increase in Melinis and a large decrease in richness of flowering plants. Unexpectedly, structural equation model analysis suggests that the decline in herbaceous richness was a direct result of nutrient addition, rather than an indirect effect caused by the increase in Melinis. Tree density had a strong negative effect on both Melinis cover and herbaceous richness. Our results reveal that high-nutrient availability imposes a barrier to the restoration of a diverse, native herbaceous layer in anthropogenic savannas, while tree encroachment is a threat to diversity in old-growth savannas. Abstract in Portuguese is available with online material. |
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The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savannaBrazilCerradodiversityfertilizationGround layershadingExotic grasses and high-nutrient availability are common factors that may limit recovery of herbaceous diversity in derived savannas, while tree encroachment is a threat to diversity in old-growth savannas. To understand the impacts of these factors on herbaceous communities, we studied the effect of nutrient addition, and the resulting increase in the exotic grass, Melinis minutiflora, at a savanna-forest boundary in the Brazilian Cerrado. We inventoried richness of reproductive herbs, tree basal area and cover of the exotic grass, Melinis minutiflora, in each plot. Nutrient addition caused a large increase in Melinis and a large decrease in richness of flowering plants. Unexpectedly, structural equation model analysis suggests that the decline in herbaceous richness was a direct result of nutrient addition, rather than an indirect effect caused by the increase in Melinis. Tree density had a strong negative effect on both Melinis cover and herbaceous richness. Our results reveal that high-nutrient availability imposes a barrier to the restoration of a diverse, native herbaceous layer in anthropogenic savannas, while tree encroachment is a threat to diversity in old-growth savannas. Abstract in Portuguese is available with online material.Departamento de Ecologia Universidade de BrasíliaDepartamento de Engenharia Ambiental Instituto de Ciência e Tecnologia Universidade Estadual Paulista (Unesp)Departamento de Botânica Universidade de BrasíliaPlant Biology Department North Carolina State UniversityDepartamento de Engenharia Ambiental Instituto de Ciência e Tecnologia Universidade Estadual Paulista (Unesp)Universidade de Brasília (UnB)Universidade Estadual Paulista (Unesp)North Carolina State UniversityMassi, Klécia Gili [UNESP]Eugênio, Chesterton Ulysses OrlandoFranco, Augusto CésarHoffmann, William A.2021-06-25T10:26:06Z2021-06-25T10:26:06Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1111/btp.12940Biotropica.1744-74290006-3606http://hdl.handle.net/11449/20607510.1111/btp.129402-s2.0-85102809458Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBiotropicainfo:eu-repo/semantics/openAccess2021-10-22T20:49:10Zoai:repositorio.unesp.br:11449/206075Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:20:31.635951Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna |
title |
The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna |
spellingShingle |
The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna Massi, Klécia Gili [UNESP] Brazil Cerrado diversity fertilization Ground layer shading |
title_short |
The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna |
title_full |
The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna |
title_fullStr |
The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna |
title_full_unstemmed |
The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna |
title_sort |
The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna |
author |
Massi, Klécia Gili [UNESP] |
author_facet |
Massi, Klécia Gili [UNESP] Eugênio, Chesterton Ulysses Orlando Franco, Augusto César Hoffmann, William A. |
author_role |
author |
author2 |
Eugênio, Chesterton Ulysses Orlando Franco, Augusto César Hoffmann, William A. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade de Brasília (UnB) Universidade Estadual Paulista (Unesp) North Carolina State University |
dc.contributor.author.fl_str_mv |
Massi, Klécia Gili [UNESP] Eugênio, Chesterton Ulysses Orlando Franco, Augusto César Hoffmann, William A. |
dc.subject.por.fl_str_mv |
Brazil Cerrado diversity fertilization Ground layer shading |
topic |
Brazil Cerrado diversity fertilization Ground layer shading |
description |
Exotic grasses and high-nutrient availability are common factors that may limit recovery of herbaceous diversity in derived savannas, while tree encroachment is a threat to diversity in old-growth savannas. To understand the impacts of these factors on herbaceous communities, we studied the effect of nutrient addition, and the resulting increase in the exotic grass, Melinis minutiflora, at a savanna-forest boundary in the Brazilian Cerrado. We inventoried richness of reproductive herbs, tree basal area and cover of the exotic grass, Melinis minutiflora, in each plot. Nutrient addition caused a large increase in Melinis and a large decrease in richness of flowering plants. Unexpectedly, structural equation model analysis suggests that the decline in herbaceous richness was a direct result of nutrient addition, rather than an indirect effect caused by the increase in Melinis. Tree density had a strong negative effect on both Melinis cover and herbaceous richness. Our results reveal that high-nutrient availability imposes a barrier to the restoration of a diverse, native herbaceous layer in anthropogenic savannas, while tree encroachment is a threat to diversity in old-growth savannas. Abstract in Portuguese is available with online material. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:26:06Z 2021-06-25T10:26:06Z 2021-01-01 |
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/10.1111/btp.12940 Biotropica. 1744-7429 0006-3606 http://hdl.handle.net/11449/206075 10.1111/btp.12940 2-s2.0-85102809458 |
url |
http://dx.doi.org/10.1111/btp.12940 http://hdl.handle.net/11449/206075 |
identifier_str_mv |
Biotropica. 1744-7429 0006-3606 10.1111/btp.12940 2-s2.0-85102809458 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Biotropica |
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_ |
1808128921881804800 |