Jens Würgler Hansen

TL;DR: It is speculated that in shallow sediments of the Skagerrak, surface Mn oxides are present in a somewhat reduced oxidation level allowing Mn2+ to escape, and perhaps providing the Mn22+ which enriches sediment of the deep basin, as well as reflecting the saturation by Mn2- of highly reactive surface adsorption sites.

TL;DR: It is suspected that the importance of O2 respiration in many coastal sediments has been overestimated, whereas metal oxide reduction (both Fe and Mn reduction) has probably been well underestimated.

TL;DR: A new chemolithotrophic bacterial metabolism was discovered in anaerobic marine enrichment cultures and offers an explanation for recent observations of an aerobic sulfide oxidation to sulfate in anoxic sediments.

TL;DR: In this article, an overview of some of the large, shallow, semi-enclosed coastal systems (SECS) in Europe is given, which are important both from the ecological and the economic perspective (socio-ecological systems) and provide many valuable ecosystem goods and services.

TL;DR: In this paper, the authors report trends of nutrient inputs and the responses to these in various chemical and biological components, and propose a conceptual scheme for recovery of shallow coastal ecosystems following marked reductions in nutrient inputs.