Composição específica e distribuição da comunidade de macrófitas aquáticas no reservatório de aimorés

• Autor(a) principal: Pitelli, R.l.c.m.
• Data de Publicação: 2014
• Outros Autores: Pitelli-merenda, A.m.c.m., Pitelli, R.a. [UNESP], Siqueira, R.c., Barbosa, H.o., Jesus, L.
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S0100-83582014000300002; http://hdl.handle.net/11449/114158
• topic: Eichhornia crassipes; manejo de macrófitas; Oxyscaryum cubense; Salvinia molesta; Eichhornia crassipes; aquatic weed management; Oxyscaryum cubense; Salvinia molesta

The Aimorés reservoir is formed by the construction of a dam across a river called Rio Doce It is divided into two different portions, one that was flooded, and another consisting of an adduction channel formed by the deviation of the river towards a power plant. It is of paramount importance to estimate the populations of aquatic macrophytes and determine which areas have been infested, in order to employ and assess a management plan for this reservoir, thus, this was the main objective of this work. Colonization rates have increased from 39.2 to 92.5hectares from March to June in 2009, and have gradually decreased on the following season, reaching down to 39.9hectares in January 2010. Such decrease was associated with the implementation of a management plan, especially due to the destruction of habitats that provide the growth of Eichhornia crassipes. In the macrophytes community, 31species belonging to 16botanical families were identified. The most commonly found species were E. crassipes, Salvinia molesta, Paspalum repens, Oxycaryum cubense, Urochloa subquadripara, and Hymenachne amplexicaulis. The most representative botanical family in terms of species richness was Poaceae with six representatives, followed by Cyperaceae with three representatives.