From wind to seismic signature captured by seismometers in lake Lucerne.

Ocean Bottom Seismometers (OBS) are primarily designed to record seismic signals in marine environments. However, the fundamental principles of their operation as broadband instruments enable a wider range of applications. Here, we demonstrate that OBS systems can also effectively monitor the impact of sudden strong wind events on lakes.

Physically stable yet biologically sensitive: multiyear ecological dynamics of anoxygenic phototrophs in stably redox-stratified Lake Cadagno.

Unlabelled: Lake Cadagno is a meromictic alpine lake characterized by permanent stratification, which creates a permanent anoxic environment that supports the growth of anoxygenic phototrophic sulfur bacteria. The seasonality and interseasonality of these microorganisms were examined over a three-year period (2019-2021) through regular monitoring of the water column. A variety of physical-chemical parameters, including temperature, conductivity, light, oxygen and sulfide concentrations, and the community composition of anoxygenic phototrophic sulfur bacteria in the chemocline were recorded, to observe potential influence of external weather conditions.

Calcite precipitation: The forgotten piece of lakes' carbon cycle.

Lakes emit substantial amounts of carbon dioxide (CO) into the atmosphere, but why they do remains debated. The long-standing vision of lakes as solely respirators of the organic matter leaking from the soils has been challenged by evidence that inorganic carbon produced by weathering of the catchment bedrock could also support lake CO emissions. How inorganic carbon inputs ultimately generate lake CO outgassing remains a blind spot.

Strong Subseasonal Variability of Oxic Methane Production Challenges Methane Budgeting in Freshwater Lakes.

Methane (CH) accumulation in the well-oxygenated lake epilimnion enhances the diffusive atmospheric CH emission. Both lateral transport and in situ oxic methane production (OMP) have been suggested as potential sources. While the latter has been recently supported by increasing evidence, quantifying the exact contribution of OMP to atmospheric emissions remains challenging.