66 results about "Trophic level" patented technology

The invention provides a shrimp-fish-shellfish-alga multi-unit culture and aquatic organism regulation system thereof. A shrimp culture zone, a fish culture zone, a shellfish culture zone, a large scale alga cultivation zone, a probiotics and microalga culture zone, a water processing zone and an emergency drainage system are arranged in a closed water circulation culture system, wherein the culture water circulates in different culture and water processing units. As the water circulates in different culture units and is utilized in multiple levels by various aquatic organisms of different trophic level and ecological niche, the system gives the various aquatic organisms full play to the positive bait resource complementarity, prevents the aquatic organisms from directly competing on living space and dissolved oxygen and reduces the mutual damage caused by organic remains and metabolic waste, achieves the 'self-modification' and 'biomanipulation' of the culture environment, enables the environment itself to recover from the pollution in culture process, and decontaminates the seawater culture environment.

The invention discloses a penaeus vannamei farming method combining bioflocculation technology and a multi-trophic-level integrated farming mode. The penaeus vannamei farming method combining the bioflocculation technology and the multi-trophic-level integrated farming mode includes the steps such as early-stage preparations of farming conditions, putting of penaeus vannamei and small-size fish, swamp cabbage planting, starch addition and feeding feedstuff management. According to the method, the multi-trophic-level integrated farming mode and the bioflocculation technology are innovatively applied to penaeus vannamei farming in a combining mode, namely, a multi-trophic-level integrated farming system composed of polyculture of the penaeus vannamei, the small-size fish and swamp cabbages. Starch is added in the farming system to serve as carbon source cultivation biological floccules. The levels of ammoniacal nitrogen and nitrous nitrogen in a water body are controlled through a bioflocculation action. Simultaneously, residual bait and excrement are utilized to form bacterium floccules which prawns and the small-size fish can ingest and utilize, and therefore the survival rate of the penaeus vannamei and the efficiency of feed utilization are improved. Relative to an ordinary single-farming mode, aspects of ecological benefits, economic benefits and farming effects in the farming system all achieve obvious effects.

The invention discloses a comprehensive aquaculture device and a method based on a multi-trophic-level ecological ditch. An aquaculture pond is connected with a filter feeding type fish aquaculture area through a culvert pipe, the filter feeding type fish aquaculture area is connected with an emergent aquatic plant purification area through a water filtration partition, the emergent aquatic plant purification area is connected with a submerged plant purification area through a water filtration partition, a water filtration partition is arranged at the tail end of the submerged plant purification area, and a water pump is arranged inside each partition. The aquaculture method includes the steps that the step A, source water which is acquired on the rim and accords with fishery water quality standards is pumped into the aquaculture pond through automatic flow or a water pump; step B, the aquaculture mode of combination of high-density stocking and multiple stocking and multiple fishing is adopted; step C and step D, along with arrival of aquaculture seasons, an impeller type aerator and a water ploughing machine are arranged in the aquaculture pond; step E, fishes are stocked in the filter feeding type fish aquaculture area; step F, leakage and water evaporation are carried out, and standard source water is added into the aquaculture pond. By means of the comprehensive aquaculture device and the method based on the multi-trophic-level ecological ditch, structure is simple, aquaculture is convenient to operate, aquaculture yields are improved greatly, and water area environment is protected.

Described here are compositions, methods and apparatus for biological and physical geoengineering. A vertical spar buoy or spar buoy network is provided. The buoys or array of buoys are designed to resist wave motion while supporting an analytical platform at a depth such that particulate flux of fixed carbon is indicative of sequestration in the ocean's depths for one hundred years or more. Sedimentary deadfall through the 100-Year Horizon is measured to validate the flux of fixed carbon. Issuance of validated carbon sequestration certificates and monetization and trading of those certificates are described. Also provided are compositions and methods for increasing bioactive surface area and nutrient levels so as to promote carbon sequestration. Regeneration of carbon dioxide in the mesopelagic water column is reduced by providing complex habitat in the photic zone, thus ensuring higher complexity of trophic levels and sedimentary deadfall having larger particulate size.

The present invention provides a method of sequestering carbon dioxide in aqueous environments. In a first step, an area is assessed to determine whether the area is capable of supporting the addition of organisms of higher trophic level (OHTL). Next, OHTL are added to the area in order to produce enough rapidly sinking and refractory particulate matter (PM) to sequester carbon dioxide above the level of carbon dioxide sequestration that exists before the addition of OHTL. Preferably, the PM produced by the OHTL sinks at rates significantly greater than and/or is significantly less biodegradable than that produced by other components of the biological carbon pump. Finally, this increase in the level of carbon dioxide sequestration is quantified. The method of the present invention may also include the step of reporting the quantified increase in the level of carbon dioxide sequestration.

The invention relates to a biological chain constructing method suitable for improving the water quality of a shallow lake. In the method, biological combinations of different trophic levels are configured optionally, a shrimp-fish-shellfish-submerged plant biological chain with the ecological functions of reducing nutrient salt and controlling the growth of algae is constructed, and the water quality regulating and controlling functions of biological components are brought into full play on different levels. Through absorptive utilization and metabolic activity of nutrient elements, the nitrogen and phosphorus levels the lake are lowered effectively, the transparency of an aquatic plant growing region is increased, and the water quality is improved. The biological chain constructing method has the characteristics of economic efficiency, convenience, low energy consumption, remarkable water purifying effect, good economic benefit and short treatment period, and plays an important role in maintaining the health of a shallow lake ecological system for a long time.

The present invention relates to a method of cooperative control of alga in a water body comprising silver carp, bighead carp and cladophora, which relates to a water treatment method and solves the problem of high operating cost and much of the by-products of the current alga control method. In the present invention silver carp and bighead carp are cultured in eutrophication water body with a culturing density of 60~100 g/m<3>, a culturing ratio of 3:1~4:1 and a single weight of 60~200 g; a floating net cage is arranged in the eutrophication water body, which is an open net cage made from stainless wire net having an aperture of 4~6 mm and has a length*width*height size of 1~2m*1~2m*1~2m, besides, the four corners of the upper bottom of the floating net cage are provided with floater, by which the side walls of the floating net cage can overtop the water level by 0.2~0.4 m. The present invention is simple and easy, and can reduce the alga content and the trophic level in raw water of water plant effectively so as to solve the problem of that the eutrophication high algae-laden raw water affects the conventional treatment in current water plant, to reduce the cost and improve the water quality.

The invention discloses a comprehensive multi-trophic-level marine cage aquaculture system device and an aquaculture method. An annular peripheral float floats on the sea surface, and a fish aquaculture cage is fixedly arranged at the lower inner edge of the annular peripheral float. A loading plate is horizontally suspended below the fish aquaculture cage and provided with pulling rope through holes. A sea cucumber aquaculture tank is put on the loading plate, and a plurality of independent sea cucumber aquaculture cages are arranged in the sea cucumber aquaculture tank. Upper ends of the pulling ropes are fixed to the peripheral float, middles of the pulling ropes are tied to the sea cucumber aquaculture tank, and lower ends of the pulling ropes movably penetrate the pulling rope through holes to be fixed to a first sinker. A plurality of anchor ropes for fixing the peripheral float at a set position are arranged on the peripheral float and provided with floaters, and partition plates are movably inserted in abalone aquaculture cages which are suspended on the anchor ropes. By reasonable matching and cyclic mutualism of co-cultured organisms in different trophic levels, negative effects caused by pollution problems of traditional marine aquaculture industry are alleviated, and the problem of pollution caused by a single mode in cage aquaculture is solved.

The invention discloses a monitoring and identifying evaluation method for group biotoxicity in printing and dyeing wastewater and belongs to the field of biotoxicity identification. The method comprises the following steps: screening photogenic bacteria, zebrafish larvae, zebrafish embryos and chlorella as test organisms; and performing risk and toxicity reduction evaluation on the printing and dyeing wastewater by adopting group biotoxicity tests and combining with a toxicity evaluation method, and constructing a toxicity identification evaluation system by combining with a TIE technology according to the wastewater contamination characteristics and results. According to the method disclosed by the invention, the group biotoxicity tests comprising three trophic levels such as decomposer,producer and consumer are performed for characterizing toxicities of the printing and dyeing wastewater, and the problem that a single biotoxicity test does not have representativeness is solved. Themethod has the advantages of being comprehensive, simple, high-efficiency, capable of controlling from the source, high in safety and the like, can be widely applied to researching and evaluating influences of toxic pollutants on the ecological environment, and provides a certain basis for ecological risk assessment.

The invention relates to a water body purification method. Through exciting the metabolic activity of a water body local micro flora, promoting the absorbing capability of microorganisms on contaminants in the growth and propagation processes, improving the effective biomass and the functionality of the microorganisms, and recombining, perfecting and optimizing the water body microorganism ecological system, the material flow transfer of organic nitrogen and phosphorus contaminants among different trophic levels of the water body ecological system is realized, the water body self cleaning regulation capability recovery is promoted, and the water quality purification and ecological restoration are realized. A water body indigenous microorganism activation system for realizing the water body purification method comprises an activation reaction region and an accessory equipment region. The activation effect on the water body microorganism flora is obvious; the automation degree is high; the accessory equipment is little; the management operation is convenient; the energy consumption is low; the technical support can be provided for natural landscape water body governing; good social benefits and environmental benefits are realized.

The present invention discloses a method for controlling water eutrophication of the 'artificial lagoon' of the Jinshan city beach, which comprises the following steps: firstly, according to the theory of trophodynamics, aquatic organisms are put into the water of the 'artificial lagoon'of the Jinshan city beach so as to adjust and control the aquatic ecosystem structure, and alga, polychetes, conches, shrimps, crabs and fishes are put into the water sequentially; and secondly, the water quality is detected and the aquatic ecology effect is evaluated. The method restrains the growth of microscopic algae, improves the water quality, improves the circulation rate of nitrogen and phosphorus elements in the ecosystem, enables more nutritive salt to be deposited in the consumers of each trophic level, and controls the growth of the phytoplankton in terms of the aspect of bottom-up effect (nutritive salt) and the aspect of the up-bottom effect (food chain), thereby achieving the aim of controlling the water eutrophication of the 'artificial lagoon' of the Jinshan city beach.

The present invention is an ecological culture method for polyculture of hippocampus and long-stem grape fern algae, which comprises the following steps: culture pool preparation: the culture pool is fully cleaned and exposed to the sun and then injected with filtered seawater, the seawater height is 1-1.2m; artificial ecological culture Pond construction: Environmental parameters of breeding pond: water temperature 26±3℃, salinity 32±3‰, PH8±0.2, COD6.8±0.2mg/l, light 6000‑9000lx, transparency 1.3±0.3m, PO ₄ ³⁺ ~P1.5±1mg/l, NO ₃ ⁺ ~N8±2mg/l; polyculture of hippocampus and Botrytis elongatus: when the average body length of the hippocampus is 5cm, they are mixed with selected Botrytis elongatus in the culture pond for polyculture. The present invention constructs a circular ecological breeding system by stocking adult hippocampus and Botrytis elongatus in the breeding pond, so that each ecological niche and trophic level in the breeding pond has suitable breeding objects to adapt to it, avoiding bait waste and pollution.

The invention discloses a method for measuring and calculating the threshold concentration of an ecological toxic effect of environmental pollutants. According to the method, on the basis of the experimental result of the toxic effect of biological single species, the sensitivity, reliability and stability of reaction endpoints are analyzed, the ecological relationship between populations is utilized for constructing an ecological system model, the multiple reaction end points which are in the different trophic levels and population levels are combined, then, an ecological system-toxic effect coupling model is constructed, and the threshold concentration of the ecological toxic effect of the pollutants is calculated by using the phenomenon whether ecological system asymptotic positive balance points (x*, y* and z*) in the certain pollutant concentration deviate from original balance points or not (namely whether the significant difference exists or not) as the criterion of the threshold concentration. According to the method for measuring and calculating the threshold concentration of the ecological toxic effect of the environmental pollutants, the ecological correlation between the ecological system populations is considered, the toxic effect measurement and calculation are carried out on the population level, and the result is more real and reliable.

The present invention belongs to an algal nutrient-level control method in presedimentation tank of waterworks, and relates to a water treatment method. Said method can be implemented by adopting the following steps: a breeding fresh water filter fishes is the presedimentation tank of waterworks; and b. continuously feeding water into the presedimentation tank in which the fresh water filter fishes are being bred, and continuously discharging water, its water-feeding quantity and water-discharging quantity are identical, and the retention time of the water in the presedimentation tank is 2-3 days. Said method can effectively solve the problem of that lots of algal phytoplankton can be produced in the presedimentation tank, and can raise the quality of discharged water.

The invention relates to a regulation and stability maintenance method for a shallow lake ecosystem. The method comprises the following steps: (1) evaluation technology for the structure and the function of an ecological system: using an ecopath model to obtain key parameters of each functional group in the ecological system of a lake, to learn about different nutrition level distribution, function intensity of each nutrition level and biomass sizes of different functional groups in the lake ecological system, and to analyze and evaluate imbalance factors; (2) multi-nutrient-level biological manipulation technology: (2-1) combined effect of multiple organisms; and (2-2) ecological restoration evaluation; (3) vegetation recovery and wetland reconstruction technology in a shallow water area;(4) repeating the steps (1), (2) and (3); and (5) water quality-water quantity combined regulation: detecting the rainfall of an area where the lake is located, monitoring the reservoir capacity replacement of the lake, acquiring water area characteristics, nutrition imbalance conditions and aquatic organism community function group composition according to a hydrodynamic model, and periodicallydetecting and verifying the physicochemical indexes of a water body.

The invention discloses a method for mixed cultivation of sea horses and hemifusus ternatanus.Hemifusus ternatanus and sea horses are cultivated inside a culture pond to construct a fish and shellfish circulation ecological cultivation system, suitable culture objects can adapt to all ecological niches and trophic levels in the culture pond, and bait waste and water pollution caused by residual bait are avoided.The sea horses and the hemifusus ternatanus occupy different ecological niches in the cultivation environment respectively, various kinds of natural bait in water and artificial feed put into the water can be sufficiently utilized, the total conversion rate of objects and energy in the culture pond is increased, the water quality is effectively stabilized, and entrance of etiology is controlled.The sea horse bait mainly includes copepods, artemia and small shrimps; the hemifusus ternatanus is demersal sarcophagy, and no additional feeding is needed in the cultivation process, so that the hemifusus ternatanus eat residual bait generated in the cultivation process of the sea horses, and the role of a scavenger is brought into play.Accordingly, the purposes that the bait utilization rate is improved, water pollution caused by residual bait is avoided, diseases are prevented and treated, and the production cost is saved are achieved.

The invention relates to a construction and breeding method of a grass carp-river crab-snail multi-nutrient-level pond system. A pond is divided into two economic variety production areas, namely a grass carp breeding pond and a river crab breeding pond, and the two economic variety production areas serve as the first-level utilization level of feed nutrients; a snail, silver carp and bighead carpbreeding pond is arranged at the rear end of the grass carp breeding pond and serves as the second-level utilization level of the feed nutrients; submerged plants are planted in the river crab breeding pond and serve as the third-level utilization level of the feed nutrients; residual baits and excrement in the grass carp breeding pond are collected and enter the snail, silver carp and bighead carp breeding pond, organic sediments including the residual baits and the excrement are directly eaten as baits of snails, the snails become natural baits of river crabs, nutrient-rich substances generated by decomposition of the unused residual baits and excrement become nutrient sources of microalgae, reproduction of plankton is promoted, and the biomass of silver carps and bighead carps is obtained through filter feeding of the silver carps and the bighead carps; and the unused nutrient-rich substances are absorbed by the submerged plants in the river crab breeding pond, and the submerged plants are fished and put into the grass carp breeding pond to serve as baits of grass carps.

The present invention relates to a method of cooperative control of alga in a water body comprising grass carp, cladophora and daphnia hyaline, which relates to a water treatment method and solves the problem of high operating cost and much of the by-products of the current alga control method. In the present invention grass carp is cultured in eutrophication water body with a culturing density of 20~100 g/m<3> and a single weight of 20~100 g; a floating net cage is arranged in the eutrophication water body, which is an open net cage made from stainless wire net having an aperture of 4~6 mm, besides, the four corners of the upper bottom of the floating net cage are provided with floater, by which the side walls of the floating net cage can overtop the water level by 0.2~0.4 m. The present invention is simple and easy, and can reduce the alga content and the trophic level in raw water of water plant effectively so as to solve the problem of that the eutrophication high algae-laden raw water affects the conventional treatment in current water plant, to reduce the cost and improve the water quality. The present invention make the best of the food habit difference between grass carp and daphnia hyaline, and comparing with the prior art, the present invention is simple and easy, economy and shortcut, and has high efficiency and convenient operation.

The invention discloses an ecological-type closed-water-recycling aquaculture system and belongs to the technical field of aquaculture. A specific technical scheme comprises the steps: constructing a factory building for the culture system, wherein the factory building comprises a water distribution area, an aquaculture area, a water storage tank, a microalgae culture area and a microalgae collecting area; and injecting water to the water distribution area, subjecting the water to ecological purification sequentially by the aquaculture area, a filtering basin, the microalgae culture area and the microalgae collecting area, and then, enabling the purified water to return to the water distribution area, wherein the aquaculture area is used for carrying out production operation on aquatic-product commercial crops, the filtering basin is used for filtering impurities of the aquaculture area, the microalgae culture area is used for culturing microalgae, and the microalgae collecting area is used for carrying out flocculated collecting on the microalgae. According to the culture system, progressive coupling is carried out in accordance with functional areas of different trophic levels, so that the economic benefit of aquaculture is greatly improved; and culture water is approximate to zero draining, so that surrounding farmland and sea areas are not polluted, and the aims of high efficiency and health are achieved.

The present invention relates to a method of cooperative control of alga in a water body comprising silver carp and cladophora, which relates to a water treatment method and solves the problem of that the usage of chemical agent for removing alga is harmful to human health, the usage of microstrainer and the flotation removal of algae have high cost, the ozone, ultraviolet or laser treatment for removing alga has a limited scale, and the common waaterrthacinth for removing alga causes ecological damage. In the present invention, silver carp is cultured in eutrophication water body with a culturing density of 60~100 g/m<3> and a single weight of 60~200 g; a floating net cage is arranged in the eutrophication water body, which is an open net cage made from stainless wire net having an aperture of 3~7 mm, wherein nylon wire nets having an aperture of 1.2~1.8 cm is arranged inside of the net cage which are parallel with each other and are vertical with the bottom of the net cage, besides, the four corners of the upper bottom of the floating net cage are provided with floater, by which the side walls of the floating net cage can overtop the water level by 0.2~0.5 m; the distance between the adjacent two net cages is 10~15 times of the length or width of the net cage; if cladophora grows on the nylon wire, the cladophora is collected. The present invention can reduce the alga content and the trophic level in raw water of water plant effectively and can greatly improve the water quality.

The invention discloses a shrimp deep pool greenhouse efficient ecological breeding system and method. The system is composed of a standard coarse pool shed with the area being 100-800 m<2> and the water depth being 0.5-1.5 m, a growing pool greenhouse with the area being 600-7,000 m<2> and the water depth being 2.0-5.0 m and a shed outside ecological purification pool with the area being 400-2,000 m<2> and the water depth being 1.5-2.5 m. Accordingly, by means of standard coarse pool shed and growing pool greenhouse temperature raising, early seedling placing, multiple stocking and multiple fishing (multiple cropping culture), harvesting delaying and growing pool depth increasing, the purposes of efficiently utilizing places for breeding, being stable in water environment and achieving astagger market of finished products are achieved, breeding waste water is input in an ecological pool to breed high-value aquatic animals or plant high-value aquatic plants so as to be purified for reutilization, and then an efficient, circulating and ecological multi trophic level shrimp breeding mode is built.