Does chronic nitrogen deposition have effects on grass physiology of natural habitats?

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de Uberlândia (UFU)-
Autor(es): dc.contributorUniversity of Florida-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorFerreira, Ana Maria-
Autor(es): dc.creatorFaria, Ana Paula-
Autor(es): dc.creatorVasconcelos, Heraldo L.-
Autor(es): dc.creatorBruna, Emilio M.-
Autor(es): dc.creatorCosta, Vladimir Eliodoro-
Autor(es): dc.creatorMoreira, Ana Silvia Franco Pinheiro-
Data de aceite: dc.date.accessioned2025-08-21T22:21:11Z-
Data de disponibilização: dc.date.available2025-08-21T22:21:11Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.sajb.2023.12.044-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/297850-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/297850-
Descrição: dc.descriptionAnthropogenic activities increase nitrogen deposition, which can have major consequences for biodiversity and ecosystem function. We experimentally investigated how a community of grass species would respond to three levels of nitrogen enrichment, considering their biomass and efficiency of photosynthesis. The experiments were conducted in an open savanna area with sparse trees (cerrado sensu stricto). Fifteen plots were divided considering high nitrogen supplementation, low nitrogen supplementation, and control (without nitrogen application) as treatments. The nitrogen dosages applied in each treatment were based on deposition estimates for 2050 in the Cerrado biome. Three native species had their photosynthetic metabolism evaluated 45 days after the last supplementation. Except for Echinolaena inflexa, all the 16 species found in the area expressed C4 metabolism. Echinolaena inflexa and Loudetiopsis chrysothrix showed an increase in leaf nitrogen with supplementation, with differences in chloroplastidic pigment contents. Differently from L. chrysothrix which increased its chlorophyll content, E. inflexa showed a decrease in chlorophyll and carotenoid contents under N supplementation. E. inflexa is a small species and its leaf expansion under higher contents of nitrogen suggests that this species was affected by shading caused by other community species that increased their biomass. Supplemental nitrogen did not affect the efficiency of photosynthesis of these species or severely change the grass community biomass. However, we noted only a tendency for higher biomass and biomass per tiller for Urochloa decumbens, which suggests a concern about exotic species' performance under conditions of greater availability of nitrogen.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionUniversidade Federal de Uberlândia Instituto de Biologia, Rua Ceará s/n, Bloco 2D, Campus Umuarama, MG-
Descrição: dc.descriptionDepartment of Wildlife Ecology and Conservation University of Florida, PO Box 110430-
Descrição: dc.descriptionCenter for Latin American Studies University of Florida, PO Box 115530-
Descrição: dc.descriptionCentro de Isótopos Estáveis Universidade Estadual Paulista, SP-
Descrição: dc.descriptionCentro de Isótopos Estáveis Universidade Estadual Paulista, SP-
Descrição: dc.descriptionCNPq: APQ-02114–17-
Formato: dc.format339-348-
Idioma: dc.languageen-
Relação: dc.relationSouth African Journal of Botany-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectC3 grasses-
Palavras-chave: dc.subjectC4 grasses-
Palavras-chave: dc.subjectEcophysiology-
Palavras-chave: dc.subjectExotic species-
Palavras-chave: dc.subjectGlobal changes-
Título: dc.titleDoes chronic nitrogen deposition have effects on grass physiology of natural habitats?-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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