Per-capita impacts of an invasive grass vary across levels of ecological organization in a tropical savanna

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorDamasceno, Gabriella-
Autor(es): dc.creatorFidelis, Alessandra-
Data de aceite: dc.date.accessioned2025-08-21T17:04:26Z-
Data de disponibilização: dc.date.available2025-08-21T17:04:26Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10530-023-03011-9-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/246848-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/246848-
Descrição: dc.descriptionThe impacts of invasive alien species are determined by their abundance, a relationship that usually does not follow linear trends owing to the complexity of ecological interactions. Abundance-impact curves are essential for informing evidence-based management interventions because they can reveal how per-capita impact changes as the invader become more abundant. Across 12 invasion gradients occurring in two areas, we constructed abundance-impact curves for the invasive grass Urochloa decumbens in a tropical savanna (Cerrado). We used generalized additive models to assess how increases in the invader’s abundance influenced system properties from the microhabitat to ecosystem levels. At the microhabitat level, increasing invader abundance resulted in nonlinear effects on bare soil and illuminance but a linear reduction in temperature fluctuations. The specific leaf area of dominant plants linearly increased with invader abundance. We found higher per-capita effects of Urochloa decumbens on the native graminoid cover when the invader was at low levels of abundance. Conversely, the per-capita effects on native species richness were higher at moderate levels of invasion. These results indicate the immediate impacts of the invader on the abundance of functionally similar native grasses but greater impacts on species richness only at moderate levels of invasion. The total biomass increased through the invasion gradient. Despite these changes, the abundance of invasive species did not influence the ecosystem properties. Our findings support the functional redundancy between Urochloa decumbens and native dominant grasses; however, despite this similarity, Urochloa decumbens promotes negative impacts at the microhabitat, organism, and community levels.-
Descrição: dc.descriptionNeotropical Grassland Conservancy-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionNewton Fund-
Descrição: dc.descriptionInstituto de Biociências de Rio Claro Universidade Estadual Paulista, SP-
Descrição: dc.descriptionInstituto de Biociências de Rio Claro Universidade Estadual Paulista, SP-
Descrição: dc.descriptionFAPESP: 2015/06743–0-
Descrição: dc.descriptionFAPESP: 2018/09054-
Descrição: dc.descriptionFAPESP: 2018/14995-8-
Descrição: dc.descriptionCNPq: 312689/2021–7-
Descrição: dc.descriptionCAPES: Finance Code 001-
Descrição: dc.descriptionNewton Fund: NE/S011641/1-
Formato: dc.format1811-1826-
Idioma: dc.languageen-
Relação: dc.relationBiological Invasions-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAbundance-impact curve-
Palavras-chave: dc.subjectCerrado-
Palavras-chave: dc.subjectInvasive grasses-
Palavras-chave: dc.subjectPer-capita impact-
Palavras-chave: dc.subjectTropical savanna-
Palavras-chave: dc.subjectUrochloa decumbens-
Título: dc.titlePer-capita impacts of an invasive grass vary across levels of ecological organization in a tropical savanna-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.