Biomarker-enhanced assessment of reproductive disorders in Monoporeia affinis exposed to contaminated sediment in the Baltic Sea

- Antioxidant capacity and AChE in amphipods is sensitive to contaminant exposure.
- Biomarker response differ among PCB-, PAH- and metal-contaminated sediments.
- Biomarkers support reproductive indicators in biological effect monitoring.
- Gradients in salinity and depth can modify biomarker response.