Data/hora: 20/05/2024 01:01:15

Provedor de dados: | 3
País: | Brazil
Título: | Biological interactions in the co-occurrence of Eichhornia azurea and free-floating macrophytes - DOI: 10.4025/actascibiolsci.v31i4.5577
Autores: | Marques-Silva, Giuliani Grazyella; UEM; Thomaz, Sidinei Magela; UEM.
Data: | 2009-08-20
Ano: | 2009
Palavras-chave: | 2.05.00.00-9 positive interactions; Free-floating macrophytes; Facilitation; Competition; Plant communities 2.05.00.00-9.
Resumo: | The dynamic of plant communities is strongly influenced by biological interactions. We studied the effects of Eichhornia azurea on the growth of the free-floating macrophytes Eichhornia crassipes, Salvinia minima, Salvinia auriculata and Limnobium laevigatum. The experiments were carried out in three lakes of the upper Paraná river floodplain. We used 0.5 m side squares where these species grew for 11 days (S. auriculata and L. laevigatum) and 17 days (E. crassipes and S. minima), in the presence and absence of E. azurea. There were no significant differences between the relative growth rates of macrophytes growing in the absence and presence of E. azurea. The relative interaction index showed the existence of competition between E. azurea and L. laevigatum, and neutrality with the other three species. There was no evidence of facilitation related to the improvement of physico-chemistry characteristics that could enhance macrophytes growth. However, we do not discard a ‘mechanical’ facilitation between E. azurea, which offers protection against wind and waves, and the other species of macrophytes
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5577

10.4025/actascibiolsci.v31i4.5577

Editor: | Universidade Estadual De Maringá

Formato:

application/pdf

application/pdf

Fonte:

Acta Scientiarum. Biological Sciences; v. 31, n. 4 (2009); 355-361

Acta Scientiarum. Biological Sciences; v. 31, n. 4 (2009); 355-361

Fonte:

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DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS  Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Biological Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).