This review focuses on some important and challenging aspects of soil extracellular enzyme
research. We report on recent discoveries, identify key research needs and highlight the …

Stoffhaushalt ist die Summe des Stoff-und Energieumsatzes in einem Ökosystem. Die
Untersuchung des Stoffhaushaltes eines Gewässers geht von der Feststellung der gelösten …

The model substrate L-dihydroxy phenylalanine (L-DOPA) was used to measure the activity
of phenol-oxidase (PO) in peat from a Welsh riparian wetland. The sensitive and relatively …

The fluorogenic model substrates, methylumbelliferyl [MUF]-β-D-glucoside, MUF-phosphate
and MUF-sulphate, were used to investigate the activities of β-glucosidase, phosphatase …

Three general pathways of organic matter degradation exist in natural aquatic environments.
These are based on predation, particle feeding, and dissolved organic matter (DOM) uptake …

The microbial benthic community living in streams has a key role in organic‐matter
processing. The respective role of epilithic biofilms (growing on rocks) and epipsammic …

The relation of microbial biomass and extracellular enzymatic activities to substrate
availability was investigated for the first time in deep-sea sediments of the Eastern …

Variability of flow and shear stress cause local sorting and a patchy distribution of grain size
in streambed sediments. Sediment microbial communities can be affected by the resulting …

1. The effect of removal of organic manor> 1000 apparent molecular weight (AMW) upon
biofilm processes was determined in three contrasting streams in West Germany and three …

The seasonal variation in enzymatic activities against protein and several polysaccharides
together with esterase as a measure of general hydrolytic activity was studied in a transect of …