Search results
Results from the WOW.Com Content Network
PLFAs are an essential structural component of all microbial cellular membranes.PLFA analysis is a technique widely used for estimation of the total biomass and to observe broad changes in the community composition of the living microbiota of soil and aqueous environments.
Farming can destroy soil's rhiziobiome (microbial ecosystem) by using soil amendments such as fertilizer and pesticide without compensating for their effects. By contrast, healthy soil can increase fertility in multiple ways, including supplying nutrients such as nitrogen and protecting against pests and disease, while reducing the need for ...
Soil microbial communities are characterized in many different ways. The activity of microbes can be measured by their respiration and carbon dioxide release. The cellular components of microbes can be extracted from soil and genetically profiled, or microbial biomass can be calculated by weighing the soil before and after fumigation.
Nitrogen is an essential element needed for the creation of biomass and is usually seen as a limiting nutrient in agricultural systems. Though abundant in the atmosphere, the atmospheric form of nitrogen cannot be utilized by plants and must be transformed into a form that can be taken up directly by the plants; this problem is solved by biological nitrogen fixers.
Soil biology is the study of microbial and faunal activity and ecology in soil. Soil life , soil biota , soil fauna , or edaphon is a collective term that encompasses all organisms that spend a significant portion of their life cycle within a soil profile, or at the soil- litter interface.
The microbial biomass obstructs pore spaces, creating an impermeable layer in the soil and significantly reducing water infiltration rates. Bioclogging occurs under continuous ponded infiltration at various field conditions such as artificial recharge ponds , percolation trenches , irrigation channels, sewage treatment systems, constructed ...
The microbial communities inside the root and in the rhizosphere are distinct from each other, [2] and from the microbial communities of bulk soil, [3] although there is some overlap in species composition. Different microorganisms, both beneficial and harmful, affect the development and physiology of plants.
Recent FACE studies have shown large increases in soil respiration due to increased root biomass and microbial activity. [26] Soil respiration has been found to increase up to 40.6% in a sweetgum forest in Tennessee and poplar forests in Wisconsin under elevated CO 2 conditions. [27]