Spatial and temporal variation of Peridinium umbonatum F. Stein, 1883 (Dinophyceae) and its relationship with total phytoplankton of a shallow, oligotrophic lake in central Brazil (Lagoon Bonita, Distrito Federal)

• DOI: 10.4322/actalb.02203008
• Publication Date: 2011-02-24T07:20:02Z
• Authors: Patrícia Pereira ...; Maria do Socorro ...; June Springer de ...
• Keywords: Dinophyceae; Dinoflagellate

Aim:The main goal of this study was to investigate the temporal and spatial distribution Peridinium umbonatum its relationship with physical chemical water variables pelagic littoral zones Lagoon Bonita, located in Brasília, Distrito Federal; Methods: Samples were collected at three stations: two zone one zone, every 15 days from April 2005 through March 2006; Results: P. only member class Dinophyceae recorded during entire seasonal cycle, few exceptions, both Bonita.The highest biovolume (7.5 mm 3 .L -1 ) alga occurred near shore beginning rainy season, November 2005.Smaller values May June 2005, typical dry months; Conclusions: phytoplankton community as a whole had higher biovolumes sites, end season rains.Both, scales relevant presence umbonatum, heterogeneity dominant factor along period.The plant structure, mainly submersed macrophytes, has affected population dynamics that took place shallow, nutrientpoor conditions, small-size lake, which matches habitat template described Lo functional classification established by Reynolds et al. (2002).