Influence of rainfall on the trophic status of a Brazilian semiarid reservoir
作者： Francisco Ítalo Barbosa Chaves , Paulo De Freitas Lima , Renato Carrhá Leitão , Walt Disney Paulino , Sandra Tédde Santaella
DOI: 10.4025/ACTASCIBIOLSCI.V35I4.18261
关键词:
摘要: This study evaluated the trophic conditions of reservoir located in urban perimeter town General Sampaio, semiarid region Ceara State, Brazil and its relationship with seasonal variation rainfall between 2010 2011. It was obtained data for Secchi disk transparency, total phosphorus, chlorophyll a to calculate Trophic State Index (TSI), as well data. The (TSI) proposed by Carlson (1977) modified Toledo Junior (1990) used test influence on hydrological variables There variability analyzed climatic periods (rainy dry) determined through index indicated ranging from oligotrophic eutrophic during two years this reservoir. Under these circumstances, one may conclude that status is related fluctuations hydrology system controlled rainfall, which common feature regions.
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