JP2001095417A - Fishing facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide marine fishing facility having high applicability to the environment in the sea at the installation site, contributing to the purification of water quality at the vicinity of the facility, and capable of being utilized over a long period as a good fishing spot gathering many fish. SOLUTION: Plural artificial fish banks 2 are sunk and installed at the vicinity of a fishing pier 1 connected to a quay 11 by a pier 12. The artificial fish banks 2 have skeleton structures obtained by standing pillars 22 on bases 21 in concrete-block shapes, and seaweeds 23 are attached to each of the pillars 22 before sinking and installing the fish banks 2 or just after the sinking and installing thereof. The seaweeds 23 adhere to the pillars 22 within a short time, and are spread over the whole of the artificial fish bank 2 from the pillars 22. The seaweeds become to grow thickly in the vicinity thereof. Many fish gather around the artificial fish bank 2 at a short period after the installation because of the presence of the seaweeds, and the fishing is enjoyed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD [0001] The present invention has an excellent fish collecting effect,
The present invention also relates to a marine fishing facility that contributes to water purification and can be used as a good fishing place for a long time.

[0002]

2. Description of the Related Art In recent years, sea fishing has become popular every year as healthy leisure. Its lovers are also spread among young and old, and especially in the suburbs of urban areas where fishing is not blessed, there are artificial fishing facilities called `` fishing parks '' that children and others can enjoy easily and safely. I have. Conventionally,
As this type of fishing facility, for example, a pier-shaped one having a floor plate mounted on a steel pipe pile driven into the sea floor and provided with handrails and used as a fishing seat is widely used. Recently, embankments,
It has also been proposed to lay artificial reefs of various shapes near seawalls and piers to actively gather fish (Japanese Unexamined Patent Publication No.
0-18266, JP-A-8-70730,
Japanese Patent Publication No. 7-12263 and the like).

[0003]

The above artificial reef is required to have a function as a feeding ground in addition to a role as a hiding place and a dwelling place for fish derived from the form. In other words, near the artificial reef, an ecosystem is formed in which small underwater organisms, such as plankton, that feed on small fish gather, and then small fish gather for this fish, and then large fish gather for this small fish. Have been. Therefore, in these fishing facilities, establishment of a similar ecosystem in the sunk artificial reef is an important key to success as a fishing facility.

[0004] By the way, it is known that microscopic aquatic organisms such as plankton gather in places where seaweeds prosper, and are easy to proliferate here. It is important that seaweeds grow on the reef surface. However, each of the fishing facilities described in each of the above publications only has an artificial reef mainly composed of an inorganic material such as concrete, and does not particularly consider the growth of seaweed on them. further,
This type of fishing facility is usually planned in a location with relatively good transportation, taking into account the convenience of general anglers, and it is inevitably installed in a place close to the city. There are many. However, in such places, water pollution has progressed,
The amount of seaweeds that grow naturally near fishing facilities, if any, is negligible, and the natural settlement of spores on artificial reefs is less reliable and less promising. For this reason, the fact is that seaweeds, which are indispensable for the aggregation of fish and shellfish, do not easily reach the surface of the sunk artificial reef. Therefore, conventional fishing facilities lack the function as a bait ground, so it is difficult for fish to collect even if there are artificial reefs. Due to the small number of species, fishing results are not sufficient. Furthermore, in such a fishing facility, a large amount of bait is fed in order to collect a small number of fish, so that water pollution is more likely to progress, and there are some aspects to be improved in terms of facility durability, environmental conservation and the like. Problems remain.

[0005] Furthermore, in order to spread this kind of leisure facilities widely, it is a basic requirement that the types of fish to be fished and the number of fishes are large, and in addition to this, the environmental conditions of the installation sea area should be minimized. It is desired that the system has few restrictions and can cope with various conditions. An extreme example is a case where the sea area where sea shore is advanced is reused as a fishing ground. In such places, there is no mother algae that is a source of spores nearby, and the rocks are covered with lime algae, making it difficult for seaweed to grow. Fish and shellfish hardly collect, and it is difficult to use them as fishing facilities. In addition, when fishing facilities are established in sandy and muddy waters, the target of fishing is limited to some fish inhabiting the sandy land such as kisses, ishimochi, megochi, etc. There is a problem in terms of satisfaction after using the facilities, such as being unable to catch and enjoy various types of fish.

Accordingly, the present inventor has conducted intensive studies on the problems of the above-mentioned prior art, and as a result, focused on the shape of an artificial reef submerged near the fishing seat and attached seaweed to this in advance. The inventor of the present invention has found that growing seaweed on the entire artificial reef using the seaweed as a starting point is an important point in order to succeed as a fishing facility. That is, an object of the present invention is to provide a fishing facility which has a small restriction on an installation place, is excellent in a fish collecting effect, contributes to purification of water quality at the seaside, and can be used as a good fishing place for a long time. is there.

[0007]

According to the present invention, there is provided a fishing facility comprising a plurality of artificial reefs laid in the vicinity of a structure usable as a fishing seat, wherein the artificial reefs are block-shaped. It is characterized in that seaweed is attached to the surface of the columnar part erected on the base of the above. In the present invention, a structure that can be used as a fishing seat is a place where an angler hangs a fishing line, for example, a revetment, a pier extending from the land to the sea, a pontoon anchored on the sea away from the land. The structure, shape, and the like are not particularly limited.

In the above-mentioned fishing facility, seaweed of a type suitable for the environment of the installation site is previously attached to an appropriate position on the outer periphery of the columnar portion of the artificial reef, so that the seaweed is used as a core for forming a community and the seaweed is surrounded by the seaweed. It is prosperous and the three-dimensional seaweed community centering on artificial reefs can be created in a relatively short period of time due to the presence of pillars standing from the base. Then, in this seaweed community, many small underwater organisms such as plankton gather, and small fish gather for this. Furthermore, in search of these small fish, many large fish that can be enjoyed for fishing gather on artificial reefs. In this artificial reef, since seaweeds prosper around the pillars, especially when large seaweeds such as seaweed are applied, a community like a forest in the sea is formed, and as a dwelling place, A rich environment suitable for fish habitat is formed as a feeding ground.
In other words, by introducing seaweed into the sea near a fishing spot such as a pier by attaching seaweed to the columnar portion of the artificial fishing reef, the amount of seaweed introduced per unit area of the fishing ground is increased, and many marine products are produced. At the same time, it is possible to provide a good habitat for fish in terms of the shape of the artificial reef.

In particular, by adopting a columnar structure as an artificial fishing reef, the ocean current changes near a columnar portion installed in the sea, and an upward flow from the lower portion of the columnar portion tends to occur. As a result, oxygen and nutrients are evenly distributed to the attached seaweed, and it is easy to satisfy the growth conditions of the seaweed in the depth of the seaweed. It also has a positive effect, and greatly contributes to the growth of those micro aquatic organisms. Furthermore, even if the seaweed below the pillars is buried due to the accumulation of sand and mud on the seabed, the seaweed growing on the top remains, and it is hard to be damaged by algae such as sea urchins. When formed from a highly durable material, the seaweed remains for a long time while changing generations, so that the seaweed community essential for fish aggregation can be maintained permanently.

In the present invention, since fishing facilities are constructed in a state where seaweeds are attached to artificial reefs from the beginning, poor conditions such as seashore and sandy muddy sea areas where no seaweeds are present. Even in places, many fishes of various types gather near the artificial reef in a relatively short period of time, and can be reliably used as fishing facilities. Furthermore, seaweed communities that have grown around artificial reefs are also effective in purifying the water quality, and when fishing, there is basically no need for bait, which helps to prevent water pollution.

The types of seaweed attached to artificial reefs include:
In order to ensure the overgrowth, seaweed species suitable for the marine environment of the place where the fishing facilities are installed will be based. In the present invention, various seaweeds can be applied, and among them, the seaweeds such as Alame, Scutellaria, and Kurume are suitable as a feed for other useful shellfish such as algae, abalone and turtle. Therefore, those shells also gather on artificial reefs to form a more diverse ecosystem. In this fishing facility, abalone and turtles can be collected in addition to fishing,
The value of use as a leisure facility is increased, and the useful shellfish can be used as a culture facility. Among the seaweed marine algae, vines are environmentally friendly,
It is particularly suitable in terms of fertility and the like. The seaweed used will be either naturally harvested or aquacultured, or both, but in order to ensure settlement on artificial reefs, their roots should be damaged as much as possible. Since it is desired to attach the support to the columnar portion in a state where the support has not been formed, it is convenient to use a support made of a suitable material and shape by spore culture.

Specific means for attaching the seaweed to the columnar portion of the artificial reef include, for example, a binding band, a fastener,
By using an appropriate fixing device such as staples or the like, attachment can be easily performed. In the case of constructing a large-scale fishing facility, a large amount of seaweed is required at the time of construction. In this case, the use of cultured seaweed is advantageous. Explaining an example of the specific method, a method generally used in seaweed aquaculture and the like can be applied. That is, a seaweed spores are immersed in an aquarium in which seaweed spores float, such as seedlings and seedlings suitable for seaweed spores, such as Cremona (trade name). The base material is directly attached to the rope carrier such as a rope or hose by spirally winding it onto a string-shaped carrier, and then horizontally placed or suspended in the sea, and the seaweed larva is attached to the carrier. Are grown until the temporary roots are attached and become appropriately large enough to withstand transplantation. The size varies depending on the type of seaweed, construction time, and the underwater environment of a fishing place, but generally, the length of the leaf portion is preferably about 10 cm or more. Then, the carrier obtained by cutting the carrier into appropriate lengths is referred to in Japanese Patent Application No. Hei.
0-194837 or Japanese Patent Application No. 10-324368
As described in the above item, for example, by attaching to a support base made of a synthetic resin formed in a substantially C-ring shape that can be opened and closed, it can be easily and reliably attached to the columnar portion of the artificial reef. The support base will be described in detail. A flexible member such as a synthetic resin or the like is used to form a C-shape or the like in a substantially annular shape where one portion is opened, and the gap between the open ends is increased. A material that can be attached from the lateral direction, or a similar material is formed in a substantially strip shape, and a string-shaped carrier on which seaweeds are attached is attached to the supporting base, and when attached to a columnar portion, the surrounding material is attached. There are several types, such as one that is attached by being curved in a ring shape along the surface, and one that is formed as an endless ring and is inserted into the columnar portion from the upper end thereof. In the case of the former end-like substrate having a substantially annular shape or a substantially band shape, the annular state can be maintained even after the material is attached to the columnar portion by the elasticity of the material itself or a hooking means provided at the end. Any material can be used, and it is formed of a flexible material such as a bamboo material, a synthetic resin, rubber, or a metal into an appropriate length and shape. Specific examples of the synthetic resin include a polyamide resin, a thermoplastic elastomer, a polyurethane, and a polyolefin resin. By providing connecting means for maintaining an annular state at the ends of the strip-shaped or rod-shaped end-shaped bases, the work of attaching the artificial reef to the columnar portion is facilitated, and a more robust state is provided. Can be attached. In addition, the elastic restoring force may be further increased by, for example, bending a part in the longitudinal direction into a substantially U-shape or the like and expanding the material, although it may depend only on the holding force due to the elastic restoring force of the material itself. You may do so. Further, by adding a length adjusting function to the connecting means at the end of the base, the applicable range with respect to the outer diameter of the columnar portion can be increased.

The artificial reef serving as an epiphytic bed for seaweed is formed by attaching at least one or more columnar portions in a substantially vertical direction to an appropriately shaped block-shaped base such as a rectangular, cross, trifurcated, hexagonal or circular shape. It was erected. Note that the cross-sectional shape of the columnar portion is not limited to a circle, but may be a polygon or a hollow inside. The base material is concrete or metal, and the pillars are concrete or metal.
Metal, wood, synthetic resin, etc. can be used. In addition, when the cross-sectional shape of the columnar portion is a polygon, the supporting base to which the seaweed is attached naturally has a shape conforming thereto. The work of attaching the seaweed is not particularly limited, for example, the work is performed in the sea after the artificial reef is laid in the target place, or the seaweed is attached before the setting.

Further, if a discarded stone is laid between a structure such as a pier serving as a fishing seat and an artificial fishing reef, this becomes an epiphytic floor for seaweed, the seaweed community expands, and the gap is a habitat for root fish. In addition, the seaweed that has fallen off stays here and becomes feed, so more fish and shellfish gather and become a rich fishing ground.

Further, in the present invention, a large number of artificial reefs may be divided into a plurality of groups, and a group near the fishing seat and a group far away may be installed. In this case, fishing for small fish mainly for beginners is conducted in areas where artificial reefs are sunk near the fishing seat, and large fish can be aimed at by throwing fishing in areas sunk far away from the fishing seat. Will be possible.

When the artificial reef is submerged, it can be prevented from approaching a boat unrelated to fishing facilities by installing the artificial reef with its column-shaped upper end protruding above the water surface. It will also be a sign when doing it. In this case, it is preferable to leave at least one space where a ship can enter for facility management.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 are a schematic front view and a plan view, respectively, showing an example of a fishing facility according to the present invention. The basic configuration of this fishing facility includes a structure 1 that can be used as a fishing seat and an artificial reef 2. In the embodiment, this is an example in which the seabed is constructed for a sandy place.

In the present embodiment, the structure 1 used as a fishing seat is a substantially rectangular fishing pier connected from a quay 11 via a pier 12, and the fishing pier 1 and the pier 12 are connected.
Are respectively supported by piles 13 driven into the sea floor. A handrail 14 is provided on the fishing pier 1 for preventing falling down, and a passage 15 crossing the center of the handrail 14 in the longitudinal direction is provided so as to separate the fishing seats 16 on both sides. . The passage 15 is provided to isolate a person who is moving from a person hanging the fishing line and to prevent trouble from occurring.
There are a plurality of entrances 17 for entry. The pier 12 is also provided with a wire mesh 18 for preventing falling. The height of the fishing pier 1 and the like from the sea surface depends on the topography of the installation place, but it is necessary to set the height so that even if there is a large swell, it does not affect the fishing facilities, and is generally 3 m. It is preferable that the degree is not less than about.

Next, the artificial reef 2 used in the above embodiment is described.
In this example, four concrete pillars 22 are erected near four corners on a substantially rectangular concrete base 21, and seaweeds 23 are attached to each pillar 22 before or after sinking. As shown in detail in FIG. 3, these seaweeds 23 are attached to the column 22 in a state where they have been formed on a ring-shaped support base 24 made of synthetic resin in advance. The plurality of artificial reefs 2 are laid so as to surround the fishing pier 1 at appropriate intervals. In addition, the distance between the two is set to be long accordingly when designing for throwing fishing, but at least about 15 m is secured in order to catch fish caught even when throwing is not performed. Is preferred. In the embodiment, the upper end of the columnar portion 22 of the artificial reef 2 is installed so as to slightly protrude from the sea surface, and is used as a guide for inserting fishing line, and at the same time, a ship unrelated to this fishing facility is kept away from the fishing facility. Has become. In addition, depending on the situation of the installation location of the fishing facility, the upper end of the columnar portion 22 of the artificial reef 2 may be buried under the sea surface, so that the boat can pass therethrough. Therefore, the length of the concrete pillar 22 is appropriately selected according to the water depth of the installation location and the like.

Further, when the artificial reef 2 is laid,
It is advantageous to apply algae paint to the surfaces of the columnar portion 22 and the base 21 in advance in order to further enhance the effect. As the algae nourishing paint, a paint containing a general chemical fertilizer may be used. Among them, a photosynthetic bacterium proposed by the present applicant, a carrier using porous particles, and a water environment improving paint comprising a nutrient component of the photosynthetic bacterium are proposed. (See JP-A-5-247378)
Is particularly preferred. When this paint is applied, it is possible to maintain a high epiphytic rate of seaweed and to supply nutrients necessary for the growth of seaweed stably over a long period of time. It is convenient for the maintained seaweed community to maintain the ecosystem with large fish gathering at the top permanently. It is not always necessary to apply the composition in a place where the underwater environment is favorable. Further, in the embodiment, by disposing the waste stone 25 at an appropriate place between the artificial fishing reef 2 and the fishing pier 1, a fish that inhabits a rocky place such as a slug, a rockfish, a swordfish, a swordfish, a scorpion fish, a squid, a kiss, etc. It is a fishing place where fish in the sandy land can coexist, and you can enjoy fishing of various types of fish. These discarded stones 25 serve as an epiphytic bed for spores released from the seaweeds 24 attached to the columnar portions 22 and greatly contribute to the formation of communities. At the same time, the dropped seaweeds are retained and serve as habitats for fish and shellfish.

FIGS. 4 to 9 show other embodiments of the fishing facility according to the present invention, in which the same parts as those of the above embodiment are denoted by the same reference numerals, and duplicate description will be omitted. In the fishing facility shown in FIG. 4, the point that the artificial reef 2 is arranged so as to surround the fishing pier 1 with its columnar portion 22 protruding from the sea surface is the same as in the above-described embodiment, The area E where the interval of 2 is widened is set at two places. This area E can be used as an approach route of the ship S for maintaining and managing the fishing facilities.

The fishing facility shown in FIG. 5 is an example in which a large number of artificial reefs 2 are arranged in two groups. Here, between the fishing pier 1 and the quay 11, one artificial reef group 2N is laid in an area near the fishing pier 1. Then, on the offshore side of the fishing pier 1, a throwable fishing distance (50 to 10) is available.
(About 0 m) and the other artificial reef group 2F is laid down. In this case, since big fish gather near the artificial reef group 2F installed on the offshore side,
You can enjoy fishing by long throw. In addition, relatively small fish gather around the artificial reef group 2N installed near the fishing pier 1, making the fishing area suitable for beginners.

In each of the above embodiments, the fishing pier 1 has the quay 11
Although the example in which the fishing pier 3 is installed so as to be substantially parallel has been described, it is also possible to extend the fishing pier 3 toward the offshore side as shown in FIG. In this case, fishing pier 3
Since the front end of the fish is far away from the land, migrating fish such as inada and amberjack can also be targeted for fishing.

Further, as shown in FIG. 7, the fishing pier 4 has a rectangular frame shape, and artificial fishing reefs 2 are provided inside and outside thereof, respectively.
May be sunk. In addition, if the artificial reef 2 is sunk only in the inner part of the fishing pier 4 to form a fishing pond, it is possible to prevent unauthorized fishing.

The fishing facility shown in FIG. 8 is a case where the revetment 5 is used as a fishing seat, and a plurality of artificial reefs 2 are installed substantially parallel to the revetment 5. In this case, the type of fish gathering is limited because the fishing ground is close to the land, but fishing facilities can be constructed at low cost because the existing structures are used, and safety is not a problem. Is higher than other structures. The artificial fishing reef 2 and the revetment 5 may be separated from each other to allow throw fishing.

Further, the fishing facility shown in FIG. 9 is a case where the fishing seat is completely separated from the land. That is, an independent pontoon 6 is anchored on the sea, which is appropriately separated from the land, via an anchor or the like, and the pontoon 6 is used as a fishing seat to surround the artificial reef 2
Is arranged. In such a fishing facility, a ferry is required to use the facility, but it is possible to enjoy fishing for big fish such as red sea bream and black porgy that do not come close to the quay. In this case, the water depth becomes deeper by the distance from the land, and accordingly, the pillar 22 of the artificial reef 2 also needs to be long.

In each of the embodiments, the case where only the artificial reef 2 having the columnar structure is used has been described. However, artificial reefs of other shapes such as a normal type reef and an abalone reef may be used together. In, various marine products other than the fish to be fished gather at the fishing ground, and the utility value thereof further increases. In addition, it can be used for sightseeing by actively feeding. In addition, the length of the columnar portion 22 in the artificial reef 2 is optimally selected according to the environmental conditions such as the depth of the sinking place, the water quality, the state of the seabed, and the like. Buried completely to the depth,
Such as changing the number, shape, arrangement state, etc. of the columnar portions 22,
Various modifications within the technical concept of the present invention are of course possible.

[0028]

As described above, in the fishing facility according to the present invention, an artificial fishing reef with seaweed attached to a column standing from a base near a structure usable as a fishing seat such as a pier. As a result, many fish will collect on the artificial reef in a short time after construction. In addition, the presence of pillars standing from the base forms a three-dimensional and highly durable seaweed community centered on artificial reefs. It can be effectively used as a facility. In addition, since seaweeds are attached to artificial reefs from the beginning, they can be used as fishing facilities even in seashore and sandy muddy areas where there are no seaweeds, and they prosper mainly in artificial reefs. The resulting seaweed communities are also very effective in purifying the water quality. Basically, there is no need for sowing bait, so the water pollution around the fishing facilities is difficult to progress.

If a waste stone is laid between a pier or other structure serving as a fishing seat and an artificial reef, a greater variety of fish and shellfish will be gathered, and a large number of artificial fishing reefs will be grouped close to the fishing seat. If it is installed separately from the group, the area near the fishing seat will be a small fishing area mainly for beginners, and it is also possible to aim for big fish by throwing fishing at a place far from the fishing seat become. Also, when setting up artificial reefs,
By installing the column with its upper end protruding above the water surface, it is possible to prevent a ship unrelated to the fishing facility from approaching, and it is also a mark for throwing fishing.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an example of a fishing facility according to the present invention.

FIG. 2 is a schematic plan view of the fishing facility shown in FIG.

FIG. 3 is a front view showing an example of an artificial reef used in the present invention.

FIG. 4 is a schematic plan view showing another embodiment of a fishing facility.

FIG. 5 is a schematic plan view showing another embodiment of a fishing facility.

FIG. 6 is a schematic plan view showing another embodiment of a fishing facility.

FIG. 7 is a schematic plan view showing another embodiment of a fishing facility.

FIG. 8 is a schematic plan view showing another embodiment of a fishing facility.

FIG. 9 is a schematic plan view showing another embodiment of a fishing facility.

[Explanation of symbols]

1,3,4,5,6 structure, 2 artificial reef, 11 quay, 12 pier 16 fishing base, 21 base, 22 pillar, 23 seaweed, 2
4 ... Support substrate, 25 ... Discard stone

Continuation of the front page F term (reference) 2B003 AA01 BB02 BB03 BB04 CC04 DD01 DD02 DD03 2B026 AA05 AB05 AC01 2B104 AA01 FA13 2D018 EA11

Claims (6)

[Claims] In a fishing facility having a plurality of artificial reefs laid in the vicinity of a structure that can be used as a fishing seat, the artificial reef is provided with seaweed on a surface of a columnar portion erected on a block-shaped base. Fishing facility characterized by being attached. 2. The fishing facility according to claim 1, wherein the structure is at least one selected from a revetment, a pier, and a moored pontoon. 3. The fishing facility according to claim 1, wherein a waste stone is laid between the structure and the artificial fishing reef. 4. The fishing facility according to claim 1, wherein the artificial reef is installed in a group close to the structure and a group far from the structure. 5. The artificial reef according to claim 1, wherein said artificial reef is installed with its columnar portion upper end protruding from the water surface.
5. The fishing facility according to any one of items 4 to 4. 6. The fishing facility according to claim 5, wherein the artificial reef is installed so as to surround the structure except at least one space where a ship can enter.