Bacterial Communities in Acidic and Circumneutral Streams

Bacterial Communities in Acidic and Circumneutral Streamst

The relationship between pH and the abundance and activity of bacteria in streams was examined as part of a study of the effect of acidification on stream communities. Of the bacterial communities examined, the epilithic community appeared to be the most significantly affected by acidification. Microbial biomass, as quantified by measuring the ATP level, on rock surfaces was significantly corre...

Archaeal and bacterial diversity in acidic to circumneutral hot springs in the Philippines.

The microbial diversity was investigated in sediments of six acidic to circumneutral hot springs (Temperature: 60-92 °C, pH 3.72-6.58) in the Philippines using an integrated approach that included geochemistry and 16S rRNA gene pyrosequencing. Both bacterial and archaeal abundances were lower in high-temperature springs than in moderate-temperature ones. Overall, the archaeal community consiste...

Microbial decomposer communities are mainly structured by trophic status in circumneutral and alkaline streams.

In streams, the release of nitrogen and phosphorus is reported to affect microbial communities and the ecological processes they govern. Moreover, the type of inorganic nitrogen (NO(3), NO(2), or NH(4)) may differently impact microbial communities. We aimed to identify the environmental factors that structure aquatic microbial communities and drive leaf litter decomposition along a gradient of ...

Microbial decomposers communities are mainly structured by trophic status in circumneutral and alkaline streams

Modelling the effect of acidity on mercury uptake by walleye in acidic and circumneutral lakes.

An association between acidification of lakes and high mercury concentrations in fishes has been reported. In northern Wisconsin (USA), for example, walleye (Stizostedion vitreum) in naturally acidic lakes have higher mercury concentrations than walleye in circumneutral lakes (Weiner, 1983). In this study a bioenergetic based model for mercury uptake is applied to identify potential causes of h...