Influence of ecological filters on phytoplankton communities in semi-arid solar saltern environments
Authors:
- Raiane Santos CostaRCRaiane Santos Costa
- Joseline MolozziJMJoseline Molozzi
- Luiz Ubiratan HeppLHLuiz Ubiratan Hepp
- Diógenes Félix da Silva CostaDCDiógenes Félix da Silva Costa
- Paulo Roberto Nunes da SilvaPSPaulo Roberto Nunes da Silva
- Renato de Medeiros RochaRRRenato de Medeiros Rocha
- José Etham de Lucena BarbosaJBJosé Etham de Lucena Barbosa
Open Access
- 1 March 2015
- journal article
- research article
- Published by FapUNIFESP (SciELO) in Acta Limnologica Brasiliensia
- Vol. 27 (1) , 39-50
Abstract
ObjectiveThis study analyzed the influence of ecological filters (abiotic variables) on the phytoplankton community in hypersaline ecosystems.MethodsThe abiotic variables measured herein were: pH, water temperature, salinity, ammonium ion, total nitrogen, nitrite, nitrate, total phosphorus, and soluble reactive phosphorus. The phytoplankton community was studied for density, richness and Shannon-Wiener diversity index. Data were analyzed using analysis of variance, linear regression and Canonical correspondence analysis (CCA).ResultsIn total, 110 taxa were identified in 3 solar salterns, distributed into 9 taxonomic classes, with the predominance of Cyanobacteria (41.8%) and Bacillariophyceae (22.7%). The species Pseudanabaena galeata was the only species sampled in all saline environments. Salinity significantly influenced the richness in the three salterns, Augusto Severo (F(1,22) = 23.2, pKeywords
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