Plant invasion affects vegetation structure and sediment nitrogen stocks in subtropical mangroves

Sampaio, Jéssica Airisse Guimarães; Reis, Carla Roberta Gonçalves; Lignon, Marília Cunha; Nardoto, Gabriela Bielefeld; Salemi, Luiz Felippe

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Campo DC	Valor	Idioma
dc.contributor.author	Sampaio, Jéssica Airisse Guimarães	-
dc.contributor.author	Reis, Carla Roberta Gonçalves	-
dc.contributor.author	Lignon, Marília Cunha	-
dc.contributor.author	Nardoto, Gabriela Bielefeld	-
dc.contributor.author	Salemi, Luiz Felippe	-
dc.date.accessioned	2025-02-19T15:46:59Z	-
dc.date.available	2025-02-19T15:46:59Z	-
dc.date.issued	2021-12	-
dc.identifier.citation	SAMPAIO, Jéssica Airisse Guimarães et al. Plant invasion affects vegetation structure and sediment nitrogen stocks in subtropical mangroves. Marine Environmental Research, [S. l.], v. 172, 105506, Dec. 2021. DOI: https://doi.org/10.1016/j.marenvres.2021.105506.	pt_BR
dc.identifier.uri	http://repositorio.unb.br/handle/10482/51665	-
dc.language.iso	eng	pt_BR
dc.publisher	Elsevier Ltd.	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Plant invasion affects vegetation structure and sediment nitrogen stocks in subtropical mangroves	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Manguezais	pt_BR
dc.subject.keyword	Plantas invasoras	pt_BR
dc.subject.keyword	Poluição por nitrogênio	pt_BR
dc.subject.keyword	Árvores - mortalidade	pt_BR
dc.identifier.doi	https://doi.org/10.1016/j.marenvres.2021.105506	pt_BR
dc.relation.publisherversion	https://www.sciencedirect.com/science/article/pii/S0141113621002622?via%3Dihub#kwrds0010	pt_BR
dc.description.abstract1	Plant invasion can primarily affect the structure and functioning of terrestrial and aquatic ecosystems. Although there is evidence that plant invasion can modify organic matter dynamics in mangroves, it is uncertain whether and to which extent these changes can affect carbon (C) and nitrogen (N) dynamics in the sediment-plant system. Here, we measured: (i) the structure of native vegetation and C and N in the sediment-plant system in subtropical mangroves subjected to aquatic macrophytes invasion in southeastern Brazil. We answered the following questions: i) Do invaded mangroves differ in aboveground biomass compared to non-invaded mangroves?; ii) Are there C4 macrophytes in these sites? iii) What are the C and N stocks in sediment of invaded mangroves? We quantified C and N concentrations and the isotopic signature of such elements (δ13C and δ15N) in the sediment-plant system, the C and N stocks in the sediment (0–20 cm depth), and mangrove aboveground biomass. Mangrove aboveground biomass was lower at invaded compared to non-invaded sites reflecting the species displacement in invaded sites. The sediment at invaded mangroves did not significantly contribute to C4 sources because of the large predominance of both mangrove and invasive C3 plants. While sediment C stocks were similar among study sites (∼47 Mg ha−1), N stocks were lower at invaded (2.7 Mg ha−1) comparing to non-invaded (3.2 Mg ha−1) mangroves. The lower N stocks at invaded sites can reflect the higher leaf N concentrations and lower C:N ratios of invasive plants compared to mangroves. Thus, the effects of macrophytes invasion in subtropical mangroves are more apparent for vegetation structure and N stocks. C stocks alteration is expected the be detectable in the future.	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0001-8062-7417	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-2271-5712	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Campus de Planaltina, Núcleo de Estudos e Pesquisas Ambientais e Limnológicas – Programa de Pós-Graduação em Ciências Ambientais	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Ecologia	pt_BR
dc.contributor.affiliation	Universidade Estadual Paulista, Campus Experimental de Registro	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Campus de Planaltina, Núcleo de Estudos e Pesquisas Ambientais e Limnológicas – Programa de Pós-Graduação em Ciências Ambientais	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Ecologia	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Campus de Planaltina, Núcleo de Estudos e Pesquisas Ambientais e Limnológicas – Programa de Pós-Graduação em Ciências Ambientais	pt_BR
dc.description.unidade	Faculdade UnB Planaltina (FUP)	pt_BR
dc.description.unidade	Instituto de Ciências Biológicas (IB)	pt_BR
dc.description.unidade	Departamento de Ecologia (IB ECL)	pt_BR
dc.description.ppg	Programa de Pós-Graduação em Ciências Ambientais	pt_BR
dc.description.ppg	Programa de Pós-Graduação em Ecologia	pt_BR
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