Data/hora: 05/06/2024 18:33:27

Provedor de dados: 	58	
País: 	Brazil	
Título: 	Eichhornia azurea decomposition and the bacterial dynamic: an experimental research	
Autores: 	Dahroug,Zaryf; Santana,Natália Fernanda; Pagioro,Thomaz Aurélio.	
Data: 	2016-06-01	
Ano: 	2016	
Palavras-chave: 	Decomposition rate; Dry weight; Aquatic macrophyte; COD.	
Resumo: 	Abstract Organic decomposition is a complex interaction between chemical, physical and biological processes, where the variety of aquatic vascular plants is essential for the trophic dynamics of freshwater ecosystems. The goal of this study was to determine the aquatic macrophyte Eichhornia azurea (Sw.) Kunth decomposition rate, the time relation with the limnological parameters, and whether this relationship is a result of decomposition processes. To that end, we collected water and leaves of E. azurea in Surf Leopoldo, PR. The experiment consisted of two treatments: 25 containers with 450 mL of water and 0.8 g of biomass dry weight were used with or without the addition of macrophytes. Samples were collected in triplicate at times 0, 3 h, 6 h, 12 h, 24 h, 72 h, 120 h, 168 h and 240 h. When the container was removed, the plant material was dried in an oven. After 48 h, the material was measured to obtain the final dry weight. Analyses of pH, conductivity, dissolved oxygen, total phosphorus N-ammonia (NH4), soluble reactive phosphorus (PO4) and dissolved organic carbon were performed, and the decomposition rate was calculated. The results showed significant temporal variation of limnological parameters in the study. Additionally, dissolved oxygen, conductivity, dissolved organic carbon and total phosphorus were correlated with the dry weight of the biomass, suggesting that E. azurea decomposition significantly interferes with the dynamics of these variables.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000200279	
Editor: 	Sociedade Brasileira de Microbiologia	
Relação: 	10.1016/j.bjm.2015.08.001	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Microbiology  v.47 n.2 2016	
Fonte: 	info:eu-repo/semantics/openAccess