Enumeration of sandy sediment bacteria:Are the counts quantitative or relative?

Spatial structure of the microbial community in sandy carbonate sediment

The environmental conditions in permeable carbonate sands are in many ways different from those in fine-grained sediments, but little is known about how this affects the structure and composition of the microbial community. We studied the microbial community structure in relation to the geochemical zonation within a 4 m2 patch of a sandy carbonate sediment in Kane’ohe Bay, O’ahu, Hawaii. Porewa...

The Intrusion of Fine Suspended Sediment into a Sandy Sediment Bed a Literature Review

Tracer dispersal in sandy sediment porewater under enhanced physical forcing

This research (1) integrated a fluorescent dye injection and monitoring system for measuring the mixing of a fluorescent dye tracer (fluorescein) in permeable (sandy) sediments with a cabled ocean observatory, Kilo Nalu, Oahu, Hawaii, and (2) used this system to conduct remotely controlled in situ measurements of wave-enhanced porewater mixing in a physically well-characterized wave-dominated s...

Quantitative assessment of relative tectonic activity in the Alamarvdasht river basin, south of Iran

Tectonic processes are major factors controlling landform development in tectonically active areas. In order to evaluate quantitative measurement of tectonic activities in the Alamarvdasht basin in the south of Iran, six different morphological indices including stream-gradient index (SL), drainage basin asymmetry (Af), hypsometric integral (Hi), valley floor width-valley height ratio (Vf), dra...

Quantitative procedure for enumeration of bifidobacteria.

A membrane filter technique has been developed for the enumeration of bifidobacteria in natural aquatic environments. The technique is quantitative, selective, and differential. The medium (YN-6) contains: yeast extract, 2.0 g; agar, 1.5 g; polypeptone peptone, 1.0 g; vitamin-free Casamino Acids, 0.8 g; sodium chloride, 0.32 g; and L-cysteine hydrochloride, 0.003 g; in 100 ml of deionized water...