Effect of reoxygenation and Marenzelleria spp. bioturbation on Baltic Sea sediment metabolism

Abstract

Nutrient reduction and the improvement of bottom water oxygen concentrations are thought to be key factors in the recovery of eutrophic aquatic ecosystems. The effects of reoxygenation and bioturbation of natural hypoxic sediments in the Baltic Sea were studied using a mesocosm experiment. Anoxic sediment box cores were collected from 100 m depth in Kanholmsfjrden (Stockholm Archipelago) and maintained in flow-through mesocosms with 3 treatments: