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- W2803793903 abstract "The colonization process and successional patterns of a periphytic algal community were evaluated in a Amazonian Viveiro Lake (Rio Branco, Acre, Brasil). Sampling was performed over a period of 35 days; at 4-day intervals for 20 days, and then at 5-day intervals. Water sampling for physical, chemical and biological analyses was done during the dry and rainy season. Glass slides were used as artificial substrates for periphyton colonization. The structural community was evaluated through population density, algae class, diversity indices and descriptive species. Species richness, diversity and uniformity increased as succession progressed. While density of Bacillariophyceae, Euglenophyceae and Zygnemaphyceae increased with succession, Cyanobacteria remained dominant. Synechocystis aquatilis , Synechocystis diplococcus and Navicula pseudolanceolata were the main descriptive species in both the dry and rainy season. Cymbela tumida , Frustulia rhomboides, Trachelomonas lacustris and Closterium acicularis was correlated with an increase in hydrologic level during the rainy season. Conversely, the density of Chlamydomonas sp., Chroomonas nordstedtii , Trachelomonas volvocinopsis , Trachelomonas volvocina and Synechococcus linearis was correlated with an increase in water transparency during the dry season. In general, the periphytic algal community showed high diversity and species richness independent of season. Season also had little influence on representation of algae class and main descriptive species . However, successional patterns varied by season, and changes in hydrologic levels acted directly on the succession path of periphytic algae." @default.
- W2803793903 created "2018-06-01" @default.
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- W2803793903 date "2010-12-22" @default.
- W2803793903 modified "2023-09-24" @default.
- W2803793903 title "Structural and successional variability of periphytic algal community in a Amazonian lake during the dry and rainy season" @default.
- W2803793903 hasPublicationYear "2010" @default.
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