Swedish fjord Gullmarsfjorden (IMAGE) University of Gothenburg Caption Gullmarsfjorden in Swedish Bohuslän was one of the fjords studied. It has a varying oxygen content in the water near the bottom. The results show that the bottom sediments act as an effective carbon trap, even when the water had a higher oxygen content. Credit Astrid Hylén Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.