- Department:(Dept. 3) Plankton and Microbial Ecology
Heterozygous, polyploid, giant bacterium, Achromatium, possesses an identical functional inventory worldwide across drastically different ecosystems
The largest freshwater bacterium, Achromatium oxaliferum, is highly flexible in its requirements. The bacterial strains from the different ecosystems do not differ in their gene content, but rather choose what to express.
A probabilistic approach to dispersal in spatially explicit meta‑populations
The authors developed a new, probability-based formalism for modeling species distribution.The Network-based Probabilistic Connectivity (NPC) can provide predictions about the distribution and persistence of species at different time scales, and their dependence on patch distribution and patch density in the landscape.
Spatial and temporal variability of methane emissions from cascading reservoirs in the Upper Mekong River
Potential sediment methane production rates increase along the reservoir cascade in the Upper Mekong River. Ebullition is an important but previously overlooked pathway for methane emission. Both diffusive and ebullitive fluxes show high intra and inter reservoir variability. Fluxes fall into the low-to-mid range of global estimates for hydropower reservoirs.
Long-Read Amplicon Sequencing of Nitric Oxide Dismutase (nod) Genes Reveal Diverse Oxygenic Denitrifiers in Agricultural Soils and Lake Sediments
This study indicates that nod-gene-targeted long-read sequencing can be a powerful tool for studying the ecology of oxygenic denitrifiers, and the results also suggest that oxygenic these novel microbes are prevalent and abundant in different terrestrial samples, where they could play an important, but yet overlooked role in nitrogen transformations.
A fast-response automated gas equilibrator (FaRAGE) for continuous in situ measurement of CH4 and CO2 dissolved in water
To better understand the production and loss processes of methane and carbon dioxide in water bodies, their concentrations need to be measured with high spatial and temporal resolution. For continuous in situ measurement of CH4 and CO2 dissolved in water, researchers from IGB developed a Fast-Response Automated Gas Equilibrator (FaRAGE).
Global CO2 emissions from dry inland waters share common drivers across ecosystems
Generally, calculations that scale up carbon dioxide emissions from land and water surface areas do not take into account that inland waters dry out intermittently. This means that the actual emissions from inland waters have been significantly underestimated.