70 results about "Fish habitat" patented technology

Fish hiding units are discloses herein, which may comprise a sinkable container comprising at least one open end; a plurality of elongated and substantially flat projection members comprising a body and opposing ends inserted at one end into the open end of the container; and an adhesive substance disposed in the container for attaching the projection members inside the container.

The present invention relates to a porous underwater breakwater for preventing shore erosion and forming a fishing ground, and to a method for producing environmentally-friendly blocks for the underwater breakwater, wherein the underwater breakwater is formed by the environmentally-friendly blocks made of a mixture of effective micro-organisms (EM) and red clay such that valleys and ridges are formed on a seabed of a sea area, to thereby purify water and to prevent red tide outbreaks, and thus achieving early marine afforestation, and wherein the wave energy of swelling waves is absorbed, dispersed, and diffracted at a base layer, an intermediate layer, and a top layer of the breakwater to decrease the wave energy and to thereby significantly decrease a gap between wave heights and restore an eroded area by means of beach nourishment. According to the porous underwater breakwater for preventing shore erosion and forming a fishing ground and the method for producing environmentally-friendly blocks for the underwater breakwater, an energy-absorbing unit formed by stacking multiple blocks on the seabed of the sea area absorbs, disperses, and diffracts the wave energy to effectively decrease the wave energy, and fish can migrate through the pores, the sizes of which correspond to the length of pore-maintaining protrusions formed at each block and communicating spaces, thereby providing a fish habitat and spawning ground. Further, the effective micro-organisms and red clay mixed with concrete mortar neutralize the toxicity of the concrete, purify water, and prevent red tide outbreaks.

The invention discloses a quantification analysis method of fish habitat space characteristics influenced by gate dam regulation and control; the method comprises the following steps: investigating fish resource present situations in a research area, and screening a target fish; aiming at the screened target fish, and using indoor stress experiments and history data to build a quantification response relation curve of the target fish with respect to key habitat factors; gathering research area basic hydrology and landform data so as to build a water-power water environment model, and combiningthe quantification response relation curve of the target fish with respect to key habitat factor so as to build a habitat model facing fish habitats; introducing a landscape ecology theory and methodso as to evaluate the space characteristics of the habitat simulation result facing the fish habitat, and quantitatively analyzing the influences on the fish habitat space characteristics by the gatedam operations. The method can guide multi-gate dam river ecology restorations and protections, thus providing important theory and practice meanings for basin water resource planning and configurations.