Sentences with phrase «microbial activity when»

Depth horizons with functional genes indicative of methane - cycling and sulfate - reducing microorganisms are enriched in solid - phase sulfur and total organic carbon, host δ13C - and δ34S - isotopic values with a biological imprint, and show clear signs of microbial activity when incubated in the laboratory.

Not exact matches

Although a challenge, weeds can actually have beneficial qualities: «They add organic matter to the soil when they are turned under, they keep the ground covered and they contribute to the richness of the root zone where an abundance of beneficial microbial activity takes place» (7).

[17] Whereas, when soil is tilled by machinery, the soil layers invert, air mixes in, and soil microbial activity dramatically increases over baseline levels.

Even when a prime, rock - free site is found, samples can be contaminated with microbial activity or by modern air that seeps in when temperature changes cause the ice to crack.

When the data from all 62 studies were analyzed together, it turned out that microbial biomass and enzymatic activity were greater in no - till than in tilled systems.

Lead author of the research Dr Kelly Redeker from the Department of Biology at the University of York said «As microbial activity and its influence on its local environment has never been taken into account when looking at ice - core gas samples it could provide a moderate source of error in climate history interpretations.

However, when intestinal microbial imbalances exist (e.g.: an overgrowth or infestation of harmful bacteria, viruses, protozoa, and / or fungus), an increase in the activity of the enzyme beta - glucuronidase can occur.