JPS63267223A - Algal-fish reef - Google Patents

Abstract

PURPOSE:To obtain an algal.fish reef, constituted of massive charcoal groups and having excellent proliferation and propagation performance of microorganism or algae, fish gathering performance and durability. CONSTITUTION:A fish reef frame 4 is formed by continuously constituting a solid space by assembling supports 5 of resin pipes prepared by filling concrete and increasing specific gravity and crossbar pipes 6 into the form of parallel crosses with great spacings and many fish reef main bodies 1 prepared by densely packing massive charcoal groups 2 formed from HINOKI (Japanese cypress) wood in nets and having 1.5-2.0m length and 60-70cm diameter are hung from the crossbar pipes 6 of the fish reef frame 4. The resultant fish reef is then placed in a given sea to afford the aimed fish reef device. On the other hand, an algal reef main body 8 consisting of massive charcoal groups 2 is formed by embedding and fixing the lower ends thereof in the top surface of an algal reef substrate 7 of a concrete block and densely arranging the massive charcoal groups so as to contact seawater. The resultant main body 8 is sunk in the sea bottom for use as the algal reef.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an algae/fish reef constructed in the sea for the purpose of artificially intensively propagating algae in which fish are artificially collected.

``Prior Art'' Traditionally, artificial reefs have been widely used to collect fish by sinking concrete blocks, iron objects, etc. into the seabed. A place where fish can hide, a place that has a physical effect on the natural currents to encourage fish to gather, or a concrete block that attracts fish by feeding on naturally occurring algae and microorganisms. This is what I did.

However, the above-mentioned conventional fish reefs have little effect on attracting fish until algae etc. propagate, and it takes many years of monks to achieve a sufficient effect on attracting fish, and the concrete blocks mentioned above have a "dark" characteristic peculiar to concrete. Because of their strong oxidation, they are not suitable for the growth of microorganisms and algae, and concrete and iron materials are prone to being soaked in seawater, making them unsuitable as fish reef materials.

"Problems to be Solved by the Invention" The purpose of the present invention is to provide new algae and fish reefs that solve the problems of the above-mentioned conventional techniques, and also to develop new uses for charcoal.

"Means for Solving the Problems" The algae/fish reef of the present invention that achieves the above objectives is characterized by "a structure in which the main part is composed of lumpy charcoal groups."

"Operation" The main part of the algae/fish reef of the present invention having the above structure is composed of lumpy charcoal groups, and these charcoal groups are porous.
The surface of the lumpy charcoal, which forms the main part, and the small holes (the small holes forming the porous structure) ) has excellent suitability for the growth of microorganisms such as plankton and algae, and these microorganisms actively proliferate.
As small fish that feed on these microorganisms gather at an early stage,
It has an active fish attracting effect that attracts fish looking for small fish.

In other words, in contrast to conventional fish reefs, which utilize materials that are not suitable for use as fish reefs and rely primarily on fish hiding places and the effects of ocean currents to attract fish, the fish reef of the present invention utilizes materials that are highly suitable for attracting fish. This method is characterized by a chain reaction type of fish collection, in which microorganisms and algae are actively used to continuously multiply and reproduce, attracting small fish, and attracting fish that seek the small fish. They are fundamentally different and have a remarkable effect on attracting fish.

In addition, the charcoal can be used for an extremely long period of time without being soaked in seawater as algae or fish reef, and a new use for charcoal can be provided.

"Example" Hereinafter, a detailed explanation will be given based on an example. First, referring to FIG. 1, which shows a first embodiment of the present invention, the figure shows an embodiment of a fish reef device whose main part is formed of charcoal.

Specifically, supports 5 made of resin pipes filled with concrete to increase their specific gravity and horizontal beam vibros are assembled in the shape of a grid with large intervals to form a reef frame 4 with a continuous three-dimensional space.
A group of lumpy charcoal 2 produced from waste wood (lumped charcoal refers to the normal size charcoal used when producing charcoal from wood and fitting it together) is placed on the horizontal bar 6 of the fish reef frame 4 in a net. A large number of fish reef bodies 1 packed tightly in a bag 8 are suspended so that the charcoal groups 2 in the fish reef bodies 1 come into sufficient contact with seawater. In addition, the fish reef main body 1 in this example is 1.5
A deep-bottomed net bag 8 with a length of ~2.0 meters and a diameter of 60 to 70 cm is filled with approximately 70 # of charcoal.

The above-mentioned fish reefs are installed in a predetermined location in the sea.

According to the fish reef with the above structure, the main body of the reef 1 is made up of the net bag 8 packed with the lump-like charcoal group 2, and the charcoal group 2 is a porous material (charcoal charcoal) that has excellent general properties of charcoal. The internal specific area of the wood is approximately 200 to 800 square meters/L/), and it has numerous small holes and is highly absorbent. The charcoal that forms the fish reef main body 1 has extremely low impurities such as nitrogen, and has a heat-retaining property that prevents the temperature of the seawater sucked into the small holes forming the private chambers from decreasing even if the temperature of the seawater surrounding the fish reef main body 1 changes. The small holes in group 2 function as private apartments for microorganisms, and have excellent suitability for the proliferation and proliferation of microorganisms, allowing microorganisms to rapidly and actively grow, and also allowing the algae that takes root in the small holes to propagate. It has the effect of promoting the growth and adhesion of shellfish that feed on the microorganisms that have grown in the pores.

There is an excellent fish-attracting effect in which schools of small fish that feed on these microorganisms gather, and schools of fish that seek out those small fish and algae gather in large numbers.

Since the fish reef main body 1 is made of charcoal, there is no fear of corrosion by seawater, and it has the advantage of functioning as a fish reef for a long time, and new uses for charcoal can be developed.

Next, Figure 2 shows a second example of the present invention applied as an algae reef device.
This shows an example, in which the concrete pro is fixed to the upper surface of the algae reef base 7 by embedding the lower end into the algae reef base 7,
A seaweed reef main body 8 consisting of lump-like charcoal groups 2 that are densely arranged and in contact with seawater is formed, and the seaweed reef main body 7 is configured to be sunk to the seabed and used as a seaweed reef.

The algae reef of this second illustrated embodiment has the same effect as that of the first embodiment, and can be expected to actively reproduce and flourish. If it is submerged in water at a depth where sunlight can reach it, it has the advantage that algae growth will become even more active through photosynthesis caused by sunlight.

The charcoal used in the algae-O-fish reef of the present invention may be general charcoal made from wood such as beech or oak, in addition to the cypress wood used in the above embodiments. Furthermore, as an embodiment of the present invention, in the net bag 8 and the charcoal W2 of the first embodiment,
If spores of algae or the like are applied in advance, the effects of the present invention described above will be further improved.

"Effects of the Invention" As explained above, the algae/fish reef of the present invention has excellent ability to propagate microorganisms and algae, has remarkable fish-attracting ability, functions with good durability in seawater, and has a charcoal-based structure. It has great practical effects, such as developing new uses for.

[Brief explanation of the drawing]

Figure 1: Perspective view showing a fish reef according to the tube-containing embodiment of the present invention, Figure 2: Perspective view showing a seaweed reef according to the second embodiment of the present invention, 1: Fish reef main body, 2: Charcoal group, 3: Net Bag, 4: Fish reef frame, 5: Support, 6: Horizontal bar, 7: Algae reef base, 8: Algae reef main body

Claims (3)

[Claims] (1) Algae and fish reefs characterized by having a main part composed of lumpy charcoal groups. (2) The algae/fish reef according to claim (1), which consists of a main part of a net bag filled with chunks of charcoal and suspended in the sea. (3) The algae/fish reef as set forth in claim (1), which comprises a main portion in which lumpy charcoal groups are arranged and fixed on the surface of a base material.