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Periphyton is a complex mixture of algae, cyanobacteria, heterotrophic microbes, and detritus that is attached to submerged surfaces in most aquatic ecosystems. The related term Aufwuchs (German "surface growth" or "overgrowth") refers to the collection of small animals and plants that adhere to open surfaces in aquatic environments, such as parts of rooted plants. Periphyton serves as an important food source for invertebrates, tadpoles, and some fish. It can also absorb contaminants, removing them from the water column and limiting their movement through the environment. The periphyton is also an important indicator of water quality; responses of this community to pollutants can be measured at a variety of scales representing physiological to community-level changes. Periphyton has often been used as an experimental system in, e.g., pollution-induced community tolerance studies.
A device for inducing periphyton to proliferate in a rice field, periphyton and application
This invention discloses a device for inducing the amplification of periphyte organisms in paddy fields, comprising a hollow amplification cavity enclosed by a shell. An artificial carrier, an aeration device, a light module, and a temperature control module are arranged within the amplification cavity. The artificial carrier is a porous material with a pore size of 80-250 μm, a porosity of 85-95%, and a total pore area of 0.20-0.80 m². 2 / g. Furthermore, this invention also provides a pericarp biofilm and its applications. The beneficial effects are: the artificial carrier has abundant microbial attachment points, which can promote the growth and expansion of the biofilm and prevent detachment; it can also effectively reduce the mechanical shear force of water flow on microorganisms, intercept suspended organic matter in sewage, provide nutrients for microorganisms, lower the surface energy barrier for microbial attachment, and make it easier for various bacterial and algal communities to colonize, achieving rapid biofilm formation and mass production.
Owner:NAT CENT OF TECH INNOVATON FOR PIGNS +1