The Effects of Sediment Classification Pattern on a Water Column Organism, Ceriodaphnia dubia

Author(s)

Lira, Vivian Silva ^[1] ; Watanabe, Claudia Hitomi ^[1] ; Carvalho, Marcela Merides ^[1] ; Rosa, Andre Henrique ^[1] ; Fracacio, Renata ^[1]

Affiliation

^[1] UNESP Sao Paulo State Univ, Inst Sci & Technol Sorocaba ICTS, Ave Tres de Marco 511, BR-18087180 Sorocaba, SP - Brazil

• Document type: Journal article
• Source: Bulletin of Environmental Contamination and Toxicology; v. 100, n. 6, p. 778-785, JUN 2018.
• Web of Science Citations: 0

Abstract

The sediment compartment stands out because it functions as both a temporary sink of pollutants and a potential source of these elements that may become available to the water column.This study aimed to correlate the concentrations of total metals in the crude sediment and in the interstitial water with the ecotoxicity in the water column using an a modified sediment ecotoxicity test with Ceriodaphnia dubia. The results indicate that the sediment may contribute to the toxicity in the water column and that such toxicity is possibly not related to the metals present. Based on the chemical analysis of the metals, the Canadian Sediment Quality Guidelines (SQGs) would frame the sediment as non-toxic to benthic organisms, but the SQGs have no reference standards for possible effects on nektonic organisms. Due to the complexity of this compartment, it is fundamental to evaluate the interactions of the different pollutants in the system and possible effects on the nektonic organisms. (AU)

• FAPESP's process: 12/14583-5 - Study of the behavior ofndocrine disrupters in water and sediments made by chemical analyzes and ecotoxicological tests: emphasis on the biological recovery
• Grantee: Renata Fracácio Francisco
• Support Opportunities: Regular Research Grants