JP4599628B1 - Bait reef - Google Patents

Abstract

【Task】
The issue is to provide unused resources such as waste bamboo and thinned wood into the sea, to grow aquatic organisms that feed on fish, to create a food chain, and to grow depleted marine resources.
[Solution]
A cylindrical outer frame on which the fry and small fish can freely enter and exit is installed on the sea floor, and a bait reef with solid plant organic matter inserted in the inner space of the outer frame to form microorganisms and aquatic organisms that decompose organic matter. Breeding, aquatic organisms serve as fish food, forming a food chain.
The organic matter that has been decomposed and lost by microorganisms and aquatic organisms is replenished at random from above the outer frame to regenerate the reef, thereby providing a low-priced and durable plant organic reef.
[Selection] Figure 1

Description

  The invention of the present application has a cylindrical outer frame side surface made of a soft member, and the outer frame installed on the seabed inserts solid plant organic matter into the inner space of the outer frame, and feeds it by a food chain through aquatic organisms. Relating to a fishing reef with a box function.

For example, in a frame formed in a rod shape using rod-like or cord-like material, forest products including thinned wood and wood chips are stored in a net-like bag, aiming to grow and proliferate organisms that become fish food, Although there is a technique to promote the growth of seaweeds by attaching and growing fish, it is only necessary to put forest products in a net-like bag and put it in a frame that is formed in the shape of a cage installed in the sea.
A means for regenerating forest products such as thinned wood is a method of pulling up a structure for installation in the sea, and enormous costs are required (for example, see Patent Document 1).

For example, a hexahedron concrete frame is stacked with a plurality of flat units in which wood such as thinned wood is assembled in a grid or lattice shape, placed in a concrete frame and fixed with steel, and natural stone is placed on the top. There is a fish reef technology.
In this fish reef technology, there is a great difference in the service life between the concrete frame and the steel and the flat unit of wood, and no means for replenishing wood with a fish collection effect is taken into consideration. (For example, refer to Patent Document 2).

JP 2008-048687 A JP2008-029267

In the background art described in Patent Document 1, there is a technique in which forest products such as thinned wood are stored in a net-shaped bag and the fish is fixed and cultivated and installed on the seabed or lake bottom. Requires a crane ship and does not consider how to regenerate easily.
Even in Patent Document 2, replacement of lost wood is not considered at all.

  Therefore, organic materials such as bamboo, thinned wood, selected roadside trees and planted wood, scraps and waste wood produced during the sawmilling process will disappear in a short period of time due to the diet and decomposition of aquatic organisms, and require advanced processing. It is an object of the present invention to provide a permanent reef by inventing a method for replenishing easily and inexpensively.

  In order to solve the above-mentioned problem, the bait reef of the present invention is a bait reef in which a solid plant organic matter is inserted into the inner space of the outer frame, and the outer frame has a cylindrical outer frame side surface. The side surface of the cylindrical outer frame is configured by a cylindrical soft member having a predetermined interval, and is arranged so that the lower part is in contact with the seabed and used in the vertical direction, and at least a part of the lower part is a fixing means. Is fixed to the seabed, or is attached to at least part of the lower part and is substantially fixed to the seabed, and buoyancy imparting means is connected to at least part of the upper part, and has a predetermined volume in the inner space of the outer frame. Solid plant organic matter is inserted

  In order to solve the above problems, the bait reef of the present invention is a bait reef in which a solid plant organic matter is inserted into the inner space of the outer frame underwater, and the outer frame has a cylindrical outer frame side surface. The side surface of the cylindrical outer frame is composed of a cylindrical soft member having a predetermined interval, and is arranged so that the lower side is in contact with the seabed and used in the vertical direction, and at least a part of the lower side Is fixed to the seabed by fixing means, or a heavy object is attached to at least a part of the lower part and is substantially fixed to the seabed, and buoyancy imparting means is connected to at least a part of the upper part. Solid plant organic matter with a volume is inserted

  The side surface of the cylindrical outer frame is formed in a cylindrical shape with a flexible member such as a net-like member or a rope member, and can flexibly cope with waves and tidal currents.

  This soft member is configured by a member having a space that allows fry and small fish to pass through but prevents the plant organic matter inserted into the inner space of the outer frame from being dispersed.

  This gap is an important means for securing permanent fishing resources for fry and small fish to feed on aquatic organisms as a bait or to protect themselves from large fish, Although it differs depending on the fish species, 30 mm to 120 mm which can pass freely is desirable.

  The predetermined interval of the cylindrical outer frame side is the height of the outer frame side and is within the range of water depth at low tide, and is set according to the sea conditions such as water depth, tidal current, waves, etc., but the lower part touches the sea floor, The upper part is a rough standard from the water surface at low tide to a depth of about 4m.

  The lower part of the side surface of the cylindrical outer frame is fixed to the sea bottom by a fixing means, or is substantially fixed to the sea bottom by attaching a heavy object, and needs to withstand waves and tidal currents and not move.

  Above the side surface of the cylindrical outer frame, the cylindrical soft member is made upright by adding buoyancy imparting means to at least a part, and it is deformed in the early tide, but it is restored when the tide is stopped, The shape of the side of the outer frame is retained.

  The buoyancy imparting means is formed of a buoyancy part made of a container filled with foamed resin inside and a buoyancy part made of a sealed hard container, either alone or in combination.

  The buoyancy imparting means can be removed during stormy weather such as a typhoon and the outer frame side is sunk on the seabed.

  The bottom of the outer frame is the total of the portion where the cylindrical outer frame side surface is in contact with the seabed and the portion where the cylindrical outer frame side surface protrudes outward.

  Solid plant organic matter having a predetermined volume is bamboo or woody organic matter excluding powder and granular substances, and has a volume that does not easily separate from the cylindrical soft member, and preferably has a diameter, width, The total length is 30 cm or more, and attached insects are considered as the same organic matter.

  Dried plant organic matter requires pretreatment to contain water because traces of evaporation of moisture in the rods become cavities and the bulk specific gravity is less than 1, but the majority of plant organic matter containing moisture is bulky. The specific gravity is 1 or more and sinks to the bottom when inserted into the inner space of the outer frame.

  The inner side above the cylindrical outer frame side surface is the upper surface of the outer frame, and at least a part of the upper surface of the outer frame is blocked by the upper surface forming member, but the blocking is not an essential condition.

  The upper surface forming member for closing at least a part of the upper surface of the outer frame is composed of at least one of a net, a rope, a pipe, and a rod-shaped member.

  In order to replenish organic matter that has disappeared due to the diet of aquatic organisms, an opening having an opening / closing function is connected to at least a part of the upper surface forming member, or an opening having a height reaching the water surface is connected. Used as an insertion slot.

  The cylindrical outer frame forming member, the upper surface forming member, or both are used as a means for erecting the side surface of the cylindrical outer frame, as a mark of the vessel to be navigated, or for specifying the location of the bait reef. It is connected to the buoyancy body on the water surface through the traction means.

  The traction means is a means for connecting the seabed fixing means and the buoyant body on the water surface, but the portion in contact with the cylindrical outer frame side surface also has a function as an outer frame forming member, and is located below the outer frame side surface. The portion connected to the fixing means also has a function as a fixing means.

  At least a part of the fixing means is fixed to the seabed at the lower part and substantially fixed at a height that occupies at least a part of the predetermined interval with the upper part reaching the sea, and the outer frame forming member is connected to the fixing part. The outer frame is formed.

  In order to regenerate the feeding box fish reef, the plant organic matter inserted into the inner space of the outer frame is cut into a predetermined volume and inserted into the inner space of the outer frame to provide an individual plant organic matter having a predetermined volume.

  The high tide or low tide water surface or water surface described in the present invention is constantly changing due to the influence of the tidal and tides or waves, so it is defined as the water surface from approximately 60 cm below the water surface to approximately 60 cm above the water surface.

By utilizing the invention of the present application, unused bamboo and forest resources become feed for aquatic organisms, and aquatic organisms become feed for fish to complete a food chain, and at the same time, a safe place for fry and young fish is provided.
The present invention is a bait box that can be freely entered and exited for fry and small fish, and can be expected to proliferate fishery resources based on the concept of an open space ginger outside the bait box.

It is a side view of a rhombus-shaped bait box fishing reef installed on the sea floor, and the inside of the side circle is a perspective view showing a state in which miscellaneous plant organic matter is randomly inserted. It is a side view of the bait box reef where the opening part with the height which reaches the water surface at the time of low tide is connected to the upper surface formation member of a rhombus type bait box reef. FIG. 5 is a perspective view of a bait reef where the upper part of the fixing means buried in the sea bottom reaches the sea and an outer frame forming member is connected to the fixing means. It is a perspective view of the substantially circular bait reef set up on the seabed, and the inside of the side circle is a perspective view showing a state in which miscellaneous plant organic matter is randomly inserted.

A rhombus-shaped plant organic matter bait reef 12 will be described with reference to the side view of FIG.
The side surface forming member 24 constituting the cylindrical outer frame side surface 23 is a net made of a synthetic resin rope having a diameter of 6 mm.
This net is a soft member having a gap of 75 mm × 120 mm, and has a rectangular shape with a width of 6 m and a length of 12 m, and four pieces were produced.

The four nets are connected to a synthetic resin rope having a diameter of 24 mm, which is a part of the four side surface forming members 24 and also the traction means 43, in order in the longitudinal direction. ) Of the cylindrical soft member 26 was formed.
Therefore, this cylindrical soft member 26 is a square having a side of 12 m (to be installed later in a rhombus), has a height of 6 m as a predetermined interval 38, and has a gap of 75 mm × 120 mm on the side surface. Yes.

  A total of 4 locations with two locations at the bottom of the sea bottom 45 at a distance of approximately 22 m and a short side that intersects at right angles at the center, with two sides approximately 45 m at the bottom, with the direction parallel to the tide 40 as the long side. Concrete piles were driven into the places to form fixing means 42.

The four fixing means 42 were connected to the lower side of the four traction means 43 connected to the cylindrical soft member 26, and the cylindrical outer frame side face was fixed to the seabed with a diamond shape.
At this time, the four traction means 43 below the side surface of the cylindrical outer frame also have the function of the fixing means 42.

  By attaching the buoyancy imparting means 30 to the uppermost side of the cylindrical outer frame side surface 23 fixed to the seabed, the cylindrical soft member 26 stands upright in water.

  This buoyancy imparting means 30 passes 16 oval floats having a buoyancy of 6 kg / piece filled with foamed resin inside through a synthetic resin rope having a diameter of 24 mm, which is a side surface forming member 24, and 4 pieces per side. It connected to the uppermost part of the cylindrical soft member at substantially equal splits.

  Since the predetermined interval 38 of this example was set to 6 m, the upper surface of the outer frame was 0.6 m deeper than the water surface at low tide.

  The traction means 43 connected to the side surface of the cylindrical outer frame was fixed to the sea bottom 45 at the lower side, and then extended upward until it reached the water surface at high tide, and connected to the buoyant body 34 on the water surface.

As the buoyant body 34 on the water surface, a spherical float having a buoyancy of 24 kg / 1 piece filled with foamed resin inside was used.
The spherical float pulls the bait fish reef 12 and at the same time becomes a sign indicating the location of the underwater bait fish reef.

The bottom 50 of the outer frame has a predetermined area 39, which is the total of the part using the inner sea bottom 45 where the cylindrical outer frame side surface is in contact with the sea bottom and the part where part of the side surface forming member 24 protrudes outside, In this embodiment, it is approximately 120 m ² .

After the cylindrical outer frame side surface 23 was installed on the seabed, solid plant organic matter 37 was randomly inserted into the inner space of the outer frame.
Randomly inserted solid plant organic matter 37 is displayed in a perspective view (inside circle) 36 inside the outer frame of FIGS. 1 and 4.

  The solid plant organic matter 37 has a bulk specific gravity of 1.3 to 1.5 for thinned timber and roadside tree materials that have just been cut with moisture. Used as is.

  The dried plant organic matter is used after being submerged in water in advance and sufficiently absorbing water, since the traces of evaporation of moisture in the rod body become cavities and the bulk specific gravity is less than 1.

  Since the Sosetsu bamboo just after cutting had a bulk specific gravity of 1.3, the branches were separated, the main trunk was cut into 2 to 4 m, and then divided into 2 to 4 parts, and the hollow structure was destroyed and used as it was.

  The upper surface of the outer frame is not necessarily an indispensable condition, but the upper surface 27 of the outer frame is closed with the upper surface forming member 28, and the bait reef 12 shown in FIG. 1 is completed.

  FIG. 2 is a side view of a bait fish reef in which an opening having a height reaching the water surface at low tide is connected to the upper surface forming member 28 of the bait fish reef 12 and an insertion port 29 convenient for replenishing organic matter is added. is there.

In satoyama, bamboo forests are abandoned, and thinned wood is left in the forest because there is no effective demand. Thinning operations are neglected, employment is lost, aging is accelerated, and satoyama is devastated.
Even in cities, the selected waste trees of roadside trees are currently incinerated using fossil fuels while still containing moisture.
The present invention creates forest resources with high added value by utilizing these unused forest resources, and expects regeneration of satoyama.

In the sea, the area is divided into eutrophic and oligotrophic, depending on the region, the shallow reefs and tidal flats that are full of purification functions are lost by vertical revetment, the supply of organic matter is divided by the dam lake, the seafloor is widespread, and seaweed is spread. The disappearing sea desert is spreading.
Unlike seaweed and shellfish cultivated in open waters, high-quality fish are cultivated in a limited space, but many of them consume a large amount of resources as food and accelerate the depletion of resources more and more. Is the current situation.
The invention of the present application supplements the supply route divided by economic activities, and provides organic matter in the forest to the sea in the form of solids, thereby promoting the growth of feed organisms. The aim is to promote egg laying by providing fishery resources and to sustain the growth of marine resources.

The reason why the organic substance used in the present invention is a solid plant organic substance having a predetermined volume is significant.
In other words, in the case of nitrogen or phosphorus dissolved in water, or in the case of powdered plant organic matter or animal organic matter, microorganisms and plankton are explosively generated and decomposed, resulting in oxygen deficiency or plankton that has been killed in large quantities. It will cause harmful effects such as red tide.
Solid plant organic matter with a certain volume is eaten by bark beetles and beetles, or slowly decomposed by microorganisms adhering to the surface, and they are eaten by other aquatic organisms to become food for fish and feed the food chain. It will last.

However, even if the permanent recovery of fishery resources in Satoumi is a significant economic effect, high-priced fishing reefs have no economic effect on costs and are ineffective.
The main object of the present invention is to continually decompose and dissipate organic matter, and to replenish the disappeared organic matter at a low cost.
In other words, by replenishing the forest resources that are the origin of the food chain, the fish reef as a food box is regenerated semi-permanently, and when used for a long time, the unit price per year is reduced, fry is raised, and the natural food chain Permanent fishing resources are secured and the fishing villages can be activated.
Persistent demand for forest resources creates new jobs in mountain villages, high-value timber grows in thinned forests, and provides common benefits by providing mountain villages with a workforce during the resting season, Alternatively, local exchange for local consumption and local consumption will occur, and a great economic effect connecting Satoumi and Satoyama can be expected.

DESCRIPTION OF SYMBOLS 12 Feeding box fish reef 20 Outer frame 23 Cylindrical outer frame side surface 24 Side surface formation member 26 Cylindrical soft member 27 Outer frame upper surface 28 Upper surface formation member 29 Insertion port 30 Buoyancy provision means 34 Steady buoyancy body 36 on the water surface Inside outer frame Perspective view (in circle)
37 Solid plant organic matter 38 Predetermined distance 39 Predetermined area 40 Tidal current 41 Heavy load 42 Fixing means 43 Traction means 45 Sea bottom 47 Water surface 48 Low tide water surface 49 High tide water surface 50 Bottom of outer frame

Claims (2)

A bait reef with solid plant organic matter inserted into the inner space of the outer frame,
The outer frame has an outer frame side surface constituted by a side surface forming member ,
The side surface forming member is composed of a flexible member that can be bent ,
The outer frame side surface is arranged with a predetermined interval so that the lower side is in contact with the seabed,
The lower side of the outer frame side surface is fixed to the sea floor by fixing means, or a heavy object is attached to the sea floor and is substantially fixed
Above the outer frame side surface , a plurality of buoyancy imparting means are connected,
The bottom surface of the outer frame is used as the bottom surface of the outer frame, including the inner sea bottom where the lower side of the outer frame is in contact with the sea bottom and the sea bottom where the lower side of the outer frame protrudes to the outside .
Feeding box reef with solid plant organic matter with a predetermined volume inserted in the inner space of the outer frame. The inner side above the outer frame side surface is the outer frame upper surface,
The bait fish reef according to claim 1, wherein the upper surface of the outer frame is at least partially closed by an upper surface forming member or is connected to an upper surface forming member having an opening in a part thereof .

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