Université de Neuchâtel

Distribution of denitrifying bacterial communities in the stratified water column and sediment–water interface in two freshwater lakes and the Baltic Sea

Kim, Ok-Sun ; Imhoff, Johannes F ; Witzel, Karl-Paul ; Junier, Pilar

In: Aquatic ecology, 2011, vol. 45, no. 1, p. 99-112

We have studied the distribution and community composition of denitrifying bacteria in the stratified water column and at the sediment–water interface in lakes Plußsee and Schöhsee, and a near-shore site in the Baltic Sea in Germany. Although environmental changes induced by the stratification of the water column in marine environments are known to affect specific populations of denitrifying...

Université de Neuchâtel

Comparative analysis of ammonia monooxygenase (amoA) genes in the water column and sediment–water interface of two lakes and the Baltic Sea

Ok-Sun, Kim ; Junier, Pilar ; Imhoff, Johannes F ; Witzel, Karl-Paul

In: FEMS Microbiology Ecology, 2008, vol. 66, no. 2, p. 367–378

The functional gene amoA was used to compare the diversity of ammonia-oxidizing bacteria (AOB) in the water column and sediment–water interface of the two freshwater lakes Plußsee and Schöhsee and the Baltic Sea. Nested amplifications were used to increase the sensitivity of amoA detection, and to amplify a 789-bp fragment from which clone libraries were prepared. The larger...