Continuous underway measurement of microbial ectoenzyme activities in aquatic ecosystems

Stimulation of microbial nitrogen cycling in aquatic ecosystems

Introduction Conclusions References

Mercury in Aquatic Ecosystems—

Helminthic Parasites as Heavy Metal Bioindicators in Aquatic Ecosystems

Abstract         Heavy metals have raised one of the most important problems in ecology and organisms life especially human being and animals. A variety of indicators including tissues of fish, birds and sediment have been used recently to measure the aquatic pollution with heavy metals. The aim of this study was to search the published articles in Iran a...

Chlorophyll breakdown in aquatic ecosystems.

T he annual cycle of greening and degreening of plants is probably the most obvious sign of life on Earth. It is caused by the biosynthesis of ∼10 tons of chlorophylls (Chls) in spring and their degradation in fall. The biochemistry of Chl breakdown to linear tetrapyrroles has been worked out in land plants (1), but little was known about the process in marine organisms, which contribute a comp...

Enteric Bacteria in Aquatic Ecosystems

were prepared from two enteric bacterial species, Escherichia coli and Enterococcus faecalis. Counts of CFU of NSB and RSB and total numbers of RSB and FLB were monitored over time, both in the presence and in the absence of natural microbiota. In the presence of natural microbiota, no differences were observed between CFU counts of NSB and RSB, but RSB total numbers were 1 to 4 orders of magni...