RT journal article
T1 Are WWTPs effluents responsible for acute toxicity? Seasonal variations of sediment quality at the Bay of Cádiz (SW, Spain)
A1 Martín-Díaz, M.L.
A1 Maranho, L.A.
A1 Garrido Pérez, Carmen
A1 Baena Nogueras, Rosa María
A1 Lara Martín, Pablo Antonio
A1 Antón Martín, R.
A1 Valls Casillas, Tomás Ángel del
A1 Martín Díaz, María Laura
A2 Química Física
A2 Tecnologías del Medio Ambiente
K1 Wastewater
K1 Marine sediment
K1 Acute bioassays
K1 Contamination
K1 Seasonality
AB Adverse effects of wastewater treatment plants (WWTPs) on sediment quality at the Bay of Cádiz (SW,Spain) were evaluated by a battery of acute bioassays and chemical contamination. Five sites directly affected by WWTPs effluents and one control site were chosen. Results evidenced clear deterioration of ecological sediment quality parameters and possible effects on aquatic communities towards WWTPs areas. Acute toxicity and chemical contamination varied significantly across the studied sites anddiffered between winter and summer seasons. The Bay of Cádiz is contaminated by PAHs, metals, detergents (SAS) and pharmaceutical products. Principal Component Analyses indicated metals, SAS and pharmaceutical products as the major environmental stresses. Sea-urchin embryo-larval and microalgae growth rate were the most sensitive bioassays to evaluate resuspension of contaminants (elutriate) from bulk sediment. Amphipods mortality and Microtox solid phase test bioassays were recommended toevaluate bulk sediment quality. Therefore, the use of multiple-bioassays, sensitive to sediment pollution, may provide complementary information to diagnose environmental factors that can impair aquatic communities. The battery of bioassays is recommended to assess and monitor marine sediments directly affected by a mixture of contaminants released from WWTPs.
PB Springer
SN 0963-9292
YR 2015
FD 2015
LK http://hdl.handle.net/10498/39034
UL http://hdl.handle.net/10498/39034
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026