JP3256535B2 - Seagrass bed creation method, seaweed bed propagation reef, breeding member, and seaweed bed propagation reef maintenance method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an algae bed that grows algae suitable for the growth of living organisms living in water to form an algae bed, and a seaweed bed reef used in the method. It also relates to a method for maintaining the seaweed bed breeding reef.

[0002]

2. Description of the Related Art Conventionally, algae breeding grounds for growing algae for use as fish reefs include natural rocks, tetrapods and concrete plates, or piles of these concrete products or distribution of natural stones therebetween. Those that have been established have been used. By the way, recently, mainly in sea areas,
The so-called shore-burning phenomenon, in which algae are killed due to various causes such as changes in water temperature and water quality or food-eating animals, has become a problem. In addition, the soft algae are gradually replaced by hard algae to lock out useful algae, and lime algae are formed, so that the surface of the reef is covered with very hard calcareous material, and new algae are formed. There is also the problem of disappearing. With respect to such a problem, in the conventional fish reef as described above, it takes a long time for the algae to adhere to the input block or the like, so that it cannot be practically a countermeasure. In addition, it did not become a countermeasure method in the case of the spread of shore burning.

[0003] In view of this, attention has been paid to seaweed proliferating power and the like in existing seaweed beds, and as a method for creating seaweed beds that utilizes the existing seaweed beds themselves for the establishment and growth of seaweed seeds and seedlings on artificial bases, Japanese Patent Laid-Open Publication No. A method as disclosed in JP-A-11-69924 has also been considered. According to this method, heavy materials are deposited on an existing seaweed bed, and seaweeds are formed and grown on the surface.These materials are collected and transferred to a place where a seaweed bed should be created as seed material. At the same time, other materials on which seaweeds should be grown are disposed around the seaweeds, and seaweeds, which are seed materials, are propagated on other materials to create a seaweed bed.

[0004]

However, in such a method, since a heavy material that can be stably laid on the sea floor is used as a seed material on which seaweeds are to grow, a very heavy seed material is used. There is a problem that a great deal of expense is required to relocate it. In addition, if the seaweed beds created by the sea become scorched, the time, labor, and cost for transporting new seed materials and polishing and removing the lime attached to the surface of the materials will be extremely large. There is also. In addition, since seed materials are used to grow seaweeds in existing seagrass beds, the target seaweeds may not grow as expected, or even if they grow and grow, they will not be eaten by the animals. There is also a risk of being caught.

In view of the above problems, the present invention facilitates centralized management when growing algae,
The present invention provides a method for forming a seaweed bed that enables reliable and rapid creation of a seaweed bed, provides a suitable seaweed bed reef for use in the method, and enables the seaweed bed reef to be recovered more quickly. Maintenance method.

[0006]

That is, in the method for creating a seaweed bed according to the present invention, a growing member having a growing part for growing algae is attached to a rope or the like, and the rope or the like is attached to the growing member.
Attach it to a raft or the like floating on the water,
The thickness direction is substantially perpendicular to the water depth direction and
The sea in the sea area is suspended by ropes, etc.
Algae are planted in the breeding section while being held inside
Grows to a buried state that can exert a self-protection function against the seaweeds, and relocates the growing members on which the grown algae have settled to the seabed , thereby creating a seaweed bed. .

According to such a method, by growing algae on the growing member held in the sea , the depth of the growing member can be easily changed according to the water temperature and the amount of solar radiation suitable for growing the algae. It is easier to centrally manage the growth of algae, for example, by effectively protecting against harmful animals such as herbivores living on the seabed , and by securing a large site compared to when growing algae on land, The need to cultivate algae in the aquarium, the need to circulate or replace the water in the aquarium, reduce the cost and labor associated with such land, equipment, and work, and grow algae in a natural environment Becomes possible. Moreover,
By moving the grown algae to the seabed along with the growing parts,
Underwater forests of algae can be easily formed. Furthermore, we plan to create a good fishing ground where seaweed beds can be created and seafood that feeds on algae can be collected in places where there were no seaweed beds or where seaweed beds have disappeared due to sea burning. It will be able to be created in a special way.

When growing algae in the growing section,
Then, attach the growing member to the rope and
By attaching a boat to a raft floating on the sea surface,
Keep the growing member suspended in the sea
Algae that have survived on the growing components
And protect the algae from growing.
The depth of the growing member is updated according to the water temperature and the amount of solar radiation suitable for the growth.
It is also possible to easily change it.

[0009] Further, the growth member is placed in the thickness direction at a water depth.
Through the rope etc. in a vertical orientation substantially perpendicular to the direction
So that more growing members can be
Algae that can be hung on a raft, etc.
Spores can be easily received.

In particular, the growth member itself is made relatively lightweight.
To improve handling and improve stability after relocation.
An anchor member having an anchor function
And has no anchor function by itself.
As a result, growing members on which the algae that have grown
To the anchor member to be placed
To form a seaweed bed reef with the growing member and the anchor member
It is hoped that seaweed beds will be created by
No.

In this way, the cost of relocation
And time and labor are small and stable on the sea floor.
After attaching the growing member to the anchor member to be placed,
Some or all of the algae on the growing material
Even if the dies die, remove only the
Replacement for newly grown components
The maintenance of the seaweed bed reef can be performed easily.
You.

A growing unit in which algae are burnt or died on the seabed
In order to improve the maintenance of the material,
Therefore, the growing member can be detachably attached to the anchor member.
It is preferred that this be done.

[0013] More reliable and selective growth of the target algae
In order to enable the growth, the spores of algae, etc.
With the seed yarn to which the
Should be kept underwater.

A preferable seaweed bed reef used in the above-described method of forming a seaweed bed includes a growing part for growing algae and a mounting part to an anchor member having an anchoring function, and has a function of anchoring itself. A member including a growing member that does not have the above and the anchor member that is installed on the sea floor and to which the growing member can be attached via the attachment portion can be given.

With such a seaweed bed reef, a relatively light growing part suitable for growing and relocating algae and an anchor member mainly having an anchoring function are used for forming the seaweed bed. If the functions are separated,
The role of growing and growing algae is mainly assigned to the growing member, and by attaching the growing member to the anchor member submerged in the target location, the intended seaweed bed reef can be easily formed at low cost. Becomes

In particular, as a growing member that can be suitably used in the above-described method of growing an algae by suspending the growing member in the sea , a growing portion for growing the algae, a rope for holding in the sea , etc. And a through-hole to which a hole can be attached. In particular, in order to effectively prevent the suspended growth member from falling off, it is preferable that a tying tool for restraining a rope or the like can be inserted into the through hole.

Further, in order to effectively utilize such a structure of the breeding member and transfer the breeding member to the seabed, and to form a useful seaweed bed breeding reef, the breeding member is installed on the seabed through the through hole. What is necessary is just to be able to be made to be able to be held by the anchor member to be performed.

Further, the seaweed bed reef may be maintained by removing the growing member from the anchor member and replacing the growing member with another growing member in which algae are newly activated . This
In this way, after attaching the growing member to the anchor member , even if some or all of the algae of the growing member have died due to some cause such as rocky shore, only the growing member is removed,
Maintenance of the seaweed bed breeding reef can be easily performed by relocating and replacing the growing member to which the algae are newly attached to the sea floor . Therefore, a stable seaweed bed reef can always be maintained in the creation zone, and the seaweed bed reef can be easily expanded.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a cultivation zone X set in the underwater Q as a place suitable for cultivating alame C, a kind of seaweed.
1 schematically shows a method for growing arashi C in the present embodiment. That is, in this method, the raft 7 and the like floating at a fixed position on the sea surface R are floated, and the growing member 1 for growing alame C is suspended from the raft 7 in the sea Q.

FIG. 2 shows a seaweed bed of this embodiment in which a growing member 1 in which fully grown alame C is activated is transferred to a formation zone Y set on the seabed P as a place where a seaweed bed A is to be formed. 1 schematically shows a method of forming A. Specifically, an anchor member 2 that weighs is laid in the development zone Y, and the growing member 1 is detachably held on the anchor member 2 to form a removable seaweed bed reef B1. A is being created.

Here, the detachable seaweed bed reef B1 will be specifically described. The detachable seaweed bed reef B1 is used to grow and proliferate Alame C, and to mainly collect abalone that gathers to eat it as food. The seaweed bed breeding reef B1 is, as described above, mainly a growing member 1 having a function of growing alame C.
And an anchor member 2 having an anchor function as a weight for holding the growing member 1 on the seabed P.

As shown in FIGS. 3 and 4, the growth member 1 protrudes, for example, a plate-like portion 11 of approximately 1 m on a side and having a substantially square shape in a plan view and a back surface 11b side thereof for easy transportation. It is made of concrete having a weight of about 0.5 t and composed of the flange portion 12. Then, the flange 12 is attached so that the growing member 1 can be detachably attached to the anchor member 2.
The fitting 15 as a mounting portion is protruded. Also, a seed yarn called Cremona yarn 13 in which irregularities are formed on the surface 11a of the plate-shaped portion 11 so as to activate the Alame C and spores of the Alame C are previously attached to the periphery of the growing member 1. And a growth portion 14 is formed by the surface 11a and the Cremona yarn 13. The Cremona thread 13 is used for the purpose of growing alame C preferentially over other seaweeds and selectively obtaining abalone having a high fishing profit. Further, in this embodiment, for convenience of relocation described later, a hook 16 is attached to the surface 11a of the plate-shaped portion 11.
Is installed. As described above, the growing member 1 has the surface 11
a has a raised portion 14 having an uneven shape,
Is easy to root and is suitable for its propagation. further,
Since the breeding member 1 is relatively lightweight, it does not take much cost or time to transfer between the breeding zone X1 and the creation zone Y or to carry out maintenance work. In addition, the larva C can be appropriately bred in the breeding section 14 where the larva C should be bred and survived. The breeding unit 14
For example, if the cement material is cast by using a thermoplastic material to which a shape of gravel is transferred as a transfer source substance having a concave-convex shape on a surface and a cement material is cast, the production becomes very easy. Instead, the same growth member 1 can be mass-produced using the mold in common.

On the other hand, as shown in FIGS. 3 and 4, the anchor member 2 is a rectangular concrete block having an anchor function as a weight for placing and fixing the growing member 1 thereon. In order to be able to stably hold the breeding member 1, it has a weight not to be washed away by the maximum tide in the sea area, and further includes a holding portion 21 for holding the cultivating member 1. . This holding unit 21
A ring 21b is attached to the tip of a chain 21a fixed to a pair of side surfaces 2a of the anchor member 2 so as to engage with the metal fitting 15 of the growing member 1. The anchor member 2 has an oyster shell 61 in its concrete composition as shown in section in FIG.
It contains. In this embodiment, the anchor member 2
The oyster hull in the concrete composition is provided so that the seaweed bed A is continuously formed on the seabed P, so that the oyster shell is provided with strength that can withstand a certain degree of aging. 61 is mixed in a predetermined ratio with a cement material 62 which is a basic composition. As described above, since the oyster shell 61, which is a problem of waste disposal in the fishing area, is included in the concrete composition of the anchor member 2, it can greatly contribute to the effective use of waste, and existing or future waste can be contributed. Can also help extend the life of landfills. Even if the oyster shell 61 is mixed in the concrete composition, the anchor function of the anchor member 2 is not impaired at all.

A method for constructing the seaweed bed A of the present embodiment using the detachable seaweed bed breeding reef B1 of the present embodiment having the above configuration will be described with reference to FIGS.

First, as shown in FIG. 1, a growing zone X1 is set in the sea Q within a depth of about 5 m, and the growing member 1 is suspended from the raft 7 floating on the sea surface R. Alame C first germinates from the Cremona thread 13 and gradually grows, extending the roots and changing over to the surface 11a of the growth portion 11 having an uneven shape, and eventually takes root on the growth member 1 reliably. When the alame C grows sufficiently in the growing zone X1,
The breeding member 1 is removed from the raft 7, as shown in FIG. 2, previously settled in a development zone Y set on the seabed P and transferred to the anchor member 2, and as shown in FIG.
Is attached by engaging with the ring 21b of the anchor member 2. In this manner, the growing member 1 is detachably held by the anchor member 2 to form a detachable seaweed bed reef B1 as shown in FIG. When the seaweed bed A is formed widely, a large number of seaweed bed reefs B1 may be arranged. In this way, the underwater forest of Alame C is completed.

After the seaweed bed A has been constructed in this way, if some or all of the alame C has been killed due to, for example, shore burning,
Alternatively, when catching the abalone collected on the growing member 1, only the growing member 1 is detached from the anchor member 2 as shown in FIG. Member 1 (see FIG. 1)
The seaweed bed breeding reef B1 and the seaweed bed A are maintained by relocating and replacing them. Further, the detached growing member 1 is subjected to maintenance, and is used again for growing Alame C in the growing zone X1. In this manner, maintenance of the entire seaweed bed A can be performed.

In this embodiment, as a method of creating the seaweed bed A by the detachable seaweed bed breeding reef B1 configured as described above, a growing zone X1 suitable for growing Alame C and a creation zone where the seaweed bed A is to be created. Y is set separately, and only the growing member 1 is moved between the two zones X1 and Y.
Since the growing member 1 is detachably held on the anchor member 2 in 1 and Y, it is possible to effectively reduce the cost, labor, and time required for relocation. In addition, training zone X1
In this case, since the growth of Alame C can be intensively managed, the efficiency can be greatly enhanced. In addition, as a development zone Y, a seaweed bed A can be systematically developed and expanded in a place such as a sandy beach where seaweed beds A had not existed before, or in a place where rocky scorching has occurred, and bait for alame C can be prepared. A good fishing ground for seafood such as abalone can be obtained. Further, even after the growing member 1 is attached to the anchor member 2 in the creation zone Y, even if some or all of the arrest C of the growing member 1 is killed due to some cause such as scorching, only the growing member 1 is replaced with a new one. Since the maintenance of the seaweed bed reef B1 can be facilitated by replacing the growing member 1, the stable seaweed bed reef B1 can always be maintained.

Particularly, in the present embodiment, since the breeding zone X1 is set in the sea Q, it is possible to effectively protect and grow the larva C in childhood from the harmful animals living on the seabed P. In addition, in the case of the underwater Q, not only can the sunlight necessary for growing Alame C be sufficiently provided, but also the seawater temperature suitable for growing can be adjusted by appropriately changing the suspended water depth, and the freshwater is always fresh. Seawater can be given. When the alame C grown to such an extent that it cannot be eaten by the predator by this method is transferred to the formation zone Y on the seabed P together with the growing member 1, the growing member 1
Is detachably held on the anchor member 2 to form a removable seaweed bed reef B1, and thereby the seaweed bed A is created. In other words, the function for growing the lime C and the anchor function can be separated into the growing member 1 and the anchor member 2, so that only the growing member 1 needs to be relocated as needed, and is very functional. Yes, and maintenance is easy.

It should be noted that the method of growing alame C in the growing zone X1 of the underwater Q, and transferring the growing member in which the grown Alame C has settled to the anchor member in the formation zone Y of the seabed P is described with reference to FIGS. The method shown in FIG. 9 as a first modification can also be adopted.

That is, in this modification, as shown in FIG. 6, first, the breeding zone X1 is set in or near the sea area where the slime C grows naturally, and the rope 8 is pulled from the raft 7 floating on the sea surface R at that position. The breeding member 110 is suspended from the underwater Q through the intermediary.

The growing member 110 will be described.
As shown in FIG. 7, this is made of a plate-like concrete having a substantially square shape with a side of about 20 cm in plan view and a thickness of about 5 cm, and weighs about 2.5 kg. Thus, a through hole 115 as a mounting portion penetrating in the thickness direction is formed at a substantially central portion of the surface 111, and a concavo-convex shape forming the growing portion 114 similar to that of the embodiment is formed on the surface 111. Further, in order to allow the growing member 110 to be suspended via the rope 8, the growing member 110 is formed in a substantially cross shape so as to pass through the through-hole 115 across opposing sides of the surface 111. Is formed in the contact passage 116 for contacting the contact. The uneven shape is formed so as to avoid the contact path 116. The rear surface 112 of the growing member 110 is formed flat.

Thus, the breeding zone X1 is set at or near the sea area where the larva C grows naturally, and as shown in FIG. Hang 110 underwater. At this time, the pair of breeding members 110 are placed in a vertical position such that the thickness direction is substantially perpendicular to the water depth direction with the back surfaces 112 being aligned with each other.
And both ropes 8 are restrained by a tying tool such as a tying band (not shown) inserted into the through-hole 115,
The growth member 110 is prevented from falling off. In addition, a plurality of pairs of a pair of rearing members 110 whose back surfaces 112 are combined with each other are attached to the rope 8 in the same manner as above, and the raft 7 can be suspended about 2000 in total. ing. In this manner, the spores released from the native alame C and riding on the tide are grown.
Growing by attaching and attaching. Then, after a certain period of time has elapsed after the growth member 110 has been suspended in the sea Q, the growth member 110 is lifted, and after the growth and growth of Alame C are confirmed, the growth member 110 is moved to the development zone Y. At this time, the growth degree of Alame C is determined by the growing member 11 without being able to withstand the resistance of the grown Alame C from the tide.
A size that does not fall out of 0, for example, 10 to 3
Use about 0 cm as a guide. Alame C, which is not sufficiently grown, is soft and cannot secrete phlorotannin, a unique astringent component hated by predators such as sea urchins. ,
If grown to the above-mentioned size, the self-defense function can be exerted, and such a fear can be avoided. In addition, when the survival of Alame C was not observed, as shown in FIG. 8, the initial growth was completed until spores of Alame C were adhered in advance and the larvae of the sea Q became several cm in size. The cremona thread 113 as a seed thread may be wound around the growing member 110 to grow the lime C in the growing zone X1, and then transferred to the creation zone Y. Alternatively, the cremona thread 113 may be wound around the growing member 110 from the beginning. You may grow Alame C in the put state. The Cremona thread 113 is wound in a state where the leaf length of Alame C is less than 10 cm.

In the development zone Y, as shown in FIG. 9, the growing member 110 in which Alame C has been activated is attached to the anchor member 120 which also constitutes the seaweed bed reef B2. The anchor member 120 has a substantially square shape with a side of about 2.2 m in plan view, and has a function as an anchor having a weight of about 9 ton made of a concrete block having a height of about 1 m. This anchor member 120
Contains an oyster shell as an aggregate, as in the above-described embodiment, but a general concrete block not containing such an oyster shell may be used. A plurality of metal protrusions 121 as holding portions that can be inserted into the through holes 115 of the growing member 110 are protruded from the surface. Also,
Similarly, a hook 122 used to sink or pull up the anchor member 120 is attached to a substantially central portion of the surface. Thus, the projection 121 of the anchor member 120 is inserted into the through hole 115 of the growing member 110, thereby forming the seaweed bed reef B2. Subsequent handling is the same as in the above embodiment and the like.

The present invention is not limited to the above embodiment and the first modification. That is, as shown in FIG. 10 as a second modified example, the breeding zone X2 can be set not on the seabed Q but on the seabed P.

That is, in this modified example, as shown in FIG. 10, a seabed P which satisfies conditions such as a strong water current at an appropriate water temperature and no sunlight, as shown in FIG. A breeding zone X2 on the sea floor P of about 6m
Set. In this breeding zone X2, the same one as the anchor member 2 of the above-described embodiment is previously settled, and the breeding member 1 of the above-described embodiment is similarly provided to the anchor member 2.
Is detachably held. Training zone X2
Then, a large number of such breeding members 1 are arranged to centrally manage the cultivation of Alame C. In particular, during the childhood period when Alame C is not sufficiently grown, it can be easily eaten by feeding animals such as fish and sea slugs. Therefore, it is effective to set up a protective net (not shown) as needed to grow Alame C smoothly. Alame C
First germinates from the Cremona thread 13 and gradually grows, then the roots are extended and the surface 11a of the growing portion 11 having an uneven shape is formed.
, And will surely take root in the growing member 1 soon.

When the alame C grows sufficiently in the growing zone X2, the growing member 1 is removed from the anchor member 2, and as shown in FIG. (See FIG. 2). The subsequent method of creating the seaweed bed A and the method of maintaining the seaweed bed reef B1 are the same as those in the above embodiment.

As described above, the breeding zone X2 is set on the seabed P, and the anchor member 2 is also installed in the breeding zone X2. In the formation zone Y, the growing member 1 can be stably held on the seabed P. Further, although the stability of the growing member 1 itself in water is low, the growing member 1 can be attached to an appropriate place such as the anchor member 2 by the attaching portion 15, and it is possible to grow Alame C or create a seaweed bed A on the spot. Can also be performed stably.

Further, the shapes, mounting methods, and the like of the growing member and the anchor member constituting the detachable seaweed bed breeding reef are not limited to the above-described embodiments and modified examples. Hereinafter, several examples will be described. However, each of the growth members has an uneven shape on the growth portion on the surface, and although not particularly described in the following description, reference numerals corresponding to the above embodiments are given in each drawing.

A detachable seaweed bed reef B3 shown as a third modification in FIG. 11 is composed of a growing member 310 composed of only a plurality of (four in the illustrated example) relatively small plate portions 311 and an upper surface 32.
0a, and an anchor member 320 provided with a plurality of concave portions 322 corresponding to the growing member 310. Then, a plate-shaped metal member 321 serving as a holding portion is rotatably attached to the upper surface 320a of the anchor member 320 so as to press the surface 311a of the growing member 310,
The surface 311a of the growing member 310, which is passed by the rotation of the metal fitting 321, is flattened in a partially circular shape, and this part is used as a mounting part 315. Such a growth member 3
Since 10 is small, it is preferable to apply it to the breeding zone X1 of the type that is suspended in the sea Q by the above-mentioned raft 7 or the like.

A detachable seaweed bed breeding reef B4 shown as a fourth modification in FIGS. 12A and 12B has a plate-shaped portion 411 and a plurality of reefs provided on the back surface 411b side of the plate-shaped portion 411 (illustrated example). In this case, a growth member 410 including two projections 412 is provided. At four corners of the plate-shaped portion 411, through holes 415 each serving as an attachment portion are provided. On the other hand, the anchor member 420
Is provided with a projection 423 made of a vinyl chloride pipe or the like corresponding to the through hole 415 at each of the four corners of the upper surface 420b, and a wire 424 forming a holding portion 421 together with the projection 423. Recess 4 corresponding to
22 is formed. Then, the protrusion 412 is aligned with the recess 422, and the protrusion 42 is formed in the through hole 415.
3, the growing member 410 is placed on the anchor member 420, and the wire 424 is inserted into the hole 423a provided around the projection 423 to hold the growing member 410. .

The detachable seaweed bed breeding reef B5 shown in FIG. 13 as a fifth modification has a growing member 510 having a configuration in which a plurality of insert nuts 515 as mounting portions are embedded in a pair of side surfaces 511c of a plate-shaped portion 511, and an upper surface 520b. Niko breeding member 510
And an anchor member 520 provided with a recess 523 in which a through hole 521 a corresponding to the insert nut 515 is formed. This through hole 5
21a forms a holding portion 521 together with a bolt 521b inserted from the side. And the through hole 52
Bolt 521b is inserted into 1a and insert nut 515 so that growing member 510 is detachably held.

A removable seaweed bed breeding reef B6 shown as a sixth modification in FIG. 14 has a pair of side walls 612 along side edges of a plate-shaped portion 611, and a crank-shaped key hole 615 serving as an attachment portion on the side wall 612. A growth member 610 formed with
a and an anchor member 620 provided with a keyed hole 615 and a headed projection 621 corresponding to a holding portion. The growing member 610 is attached to the anchor member 620 such that the key hole 615 is engaged with the projection 621 in a stepwise manner, so that the growing member 610 is detachably held.

The detachable seaweed bed breeding reef B7 shown as a seventh modification in FIG. 15 has a flange portion 712 around the bottom surface side of a plate-like portion 711 provided with a through hole 715 as an attachment portion substantially at the center. It comprises a growing member 710 and an anchor member 720 provided with a pipe-shaped projection 722 made of vinyl chloride at a substantially central portion of the upper surface and a metal fitting 723 capable of hanging a rope 724 on a side surface 720a. These projections 722,
The rope 724 and the metal fitting 723 constitute a holding section 721. Then, the growing member 710 is connected to the anchor member 7.
20 and the opposite side 72 of the anchor member 720
The ropes 724, which are wrapped around each other, are passed through holes 722 a provided around the projections 722, respectively.
10 is detachably held. Here, by using those made of vinyl chloride as the projections 722,
It can be used for a long time without rusting.

A detachable seaweed bed breeding reef B8 shown as an eighth modification in FIG. 16 has a plurality (four in the illustrated example) of block-like growing members 810 and a holding member on which the growing members 810 can be inserted on the upper surface side. And an anchor member 820 in which a deep concave portion 821 is formed. In such a case, the side surface 810a of the growing member 810 and the anchor member 8
Since the inner side surface 821a of the recess 821 is in surface contact with the growth member 81, the growth member 810 can be made to be difficult to come out of the recess 821 simply by inserting it into the recess 821.
0 can function as a mounting portion. Also,
A hook 816 is provided on the surface of the growing member 810 to facilitate attachment and detachment.

The detachable seaweed bed breeding reefs B3, B4, B5, and B shown as the third to eighth modifications in FIGS.
6, B7, and B8 all improve the method of attaching and detaching the growing member and the anchor member. The function of growing seaweeds such as alame is all the same as that of the removable seaweed bed reef B1 of the embodiment. Are equivalent. Further, the attaching / detaching method is not limited to the illustrated examples, and various methods are possible.

In addition, in the concrete composition of the anchor member, waste materials of marine products such as shells other than oyster shells, fish bones, shells of crustaceans, fly ash, diatomaceous earth, slag, bengalara and the like can be used. . Also, if the strength is sufficient as the concrete composition of the growing member,
A waste material or the like may be contained similarly to the anchor member. Further, the present invention is applicable not only to sea areas but also to fresh water areas such as lakes. Also, if you do not use Cremona thread,
A method of arranging a growing member at a position where a target algae is growing and allowing the algae to grow naturally may be adopted. Further, when the growing zone is set at the bottom of the water, the means for holding the growing member at that position is not limited to the method using the anchor member, and if there is one having an appropriate anchor function, it is attached to itself. It may be. In addition, the specific configuration of each unit is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0048]

The present invention is embodied in the form described above and has the following effects.

[0049] That is, first, it is necessary to or replaced or allowed to circulate in order to maintain the water of the water tank to clean by installing a large water tank to the location of the large area in the development of algae on land, at sea bottom Although there is a problem that the cultivation of the seaweed is susceptible to damage from damage, according to the method of forming an algae bed according to the present invention, it is possible to solve such a problem by cultivating algae in the sea in the actual sea area , and it is more natural. Since the cultivation is carried out in a simple environment, it is possible to centrally manage the cultivation of algae extremely efficiently. Furthermore, since the growing member on which the grown algae have settled is relocated to the seabed , a seaweed bed can be stably and easily formed by such a simple method. Therefore, it is possible to systematically form a fishing ground in a place where a seaweed bed is difficult to grow, such as a sandy area or a scorched area.

A seaweed bed formed by assuming that the growing member does not have an anchor function by itself and attaching it to an anchor member which is stably installed on the seabed and weighs via an attaching portion formed therein. Seaweed beds are built on the seabed by breeding reefs
If so that formation, sea easy to handle training members in the lightweight
It is easy to hold it by hanging it inside , and even when maintaining the seaweed bed reef, it is also easy to replace only the growing material, and the cost, time and labor are extremely small. Therefore, the seaweed bed reef can always be stably maintained.

Particularly in such a method, the growth of algae
At the time, a rope attached to a raft floating on the sea surface
By attaching and suspending the growing member, the growing member is held in the sea.
At the depth of the water, set up the growing material and plant
Algae can be cultivated, for example, by protecting them from food-eating animals.
Centralized management can be performed easily and effectively.

When the growing member is suspended in this manner,
The growing member is vertically oriented with the thickness direction substantially orthogonal to the water depth direction.
And hang it through the rope etc.
Therefore, more breeding members are suspended at the same time,
Catches algae spores that are washed away
Can be

In the above method, the growing member is removed.
It can be detachably attached to the anchor member via the attachment
If you do, the algae grow on the seafloor
It is easy to improve the maintenance of components
You.

If the growing member is held in the sea with a seed thread to which algae spores or the like are attached in advance, it is possible to grow the target algae reliably and selectively. In addition, extremely easy maintenance of a growing member in which algae are burnt or dead in the creation zone is also possible.

Further, the present invention is applied to the method for creating a seaweed bed according to the present invention.
The seagrass beds increase殖礁being provided with a development member having a development function of the algae as described above, consists of an anchor member comprising an anchor function are sinking to detachably held to the seabed to train members Then, since the anchor function of a growing feature and weigh algae needed to construct a seaweed bed a configuration in which separate each anchor member be left to sinking to the ocean floor, moving only slight development member heavy By doing so, it is possible to create a seaweed bed at extremely low cost.

Further, the growing member applied to the present invention is a marine material.
When used in the above-described method of growing algae by suspending the algae, it has a growing portion capable of growing algae, and a through hole to which a rope or the like for holding in the sea can be attached,
If a binding device for restraining a rope or the like can be inserted into the through hole, it is possible to effectively prevent the suspended growth member from falling off. In addition, if such a through hole is provided, a projection or the like that can be inserted into the through hole is formed on the anchor member for forming the seaweed bed reef together with the growing member. The formation of the seaweed bed reefs used can be facilitated.

[0057] In addition to the maintenance method of seagrass beds increase殖礁
In other words, it is better to remove the growing member from the anchor member and replace it with another growing member in which algae have newly settled .
No. By doing so, the growing member capable of catching seafood and seafood that is targeted for algae to be burnt or dead on the seabed is removed from the anchor member, and the growing member to which algae are newly attached is transferred to the seabed. The seaweed beds can be easily restored by simply replacing them, and a stable seaweed bed reef can be maintained at all times, and it is also easy to expand the seaweed beds.

[Brief description of the drawings]

FIG. 1 is a schematic view for explaining a method of growing algae in a method of forming a seaweed bed according to the present invention.

FIG. 2 is a schematic diagram illustrating a method for creating a seaweed bed and a method for maintaining the seaweed bed according to the embodiment.

FIG. 3 is a perspective view showing the seaweed bed reef in the embodiment.

FIG. 4 is an exploded perspective view of the same.

FIG. 5 is a sectional view showing the anchor member in the embodiment.

FIG. 6 is a schematic diagram illustrating a method of growing another algae as a first modification of the embodiment.

FIG. 7 is a perspective view showing a growing member in the modification.

FIG. 8 is a perspective view of the growing member.

FIG. 9 is a perspective view showing a seaweed bed reef in the modification.

FIG. 10 is a schematic view showing another method for creating a seaweed bed according to a second modification of the present invention.

FIG. 11 is a perspective view showing another seaweed bed breeding reef according to the present invention as a third modified example.

FIG. 12 is a perspective view showing another seaweed bed breeding reef according to the present invention as a fourth modified example.

FIG. 13 is a perspective view showing another seaweed bed breeding reef in the present invention as a fifth modified example.

FIG. 14 is a perspective view showing another seaweed bed reef in the present invention as a sixth modified example.

FIG. 15 is a perspective view showing another seaweed bed reef according to a seventh modification of the present invention.

FIG. 16 is a perspective view showing another seaweed bed breeding reef in the present invention as an eighth modified example.

[Explanation of symbols]

B1, B2, B3, B4, B5, B6, B7, B8 ... Removable seaweed bed breeding reef C ... Algae (alame) P ... Water bottom (sea bottom) Q ... Underwater (underwater) X1, X2 ... Growth zone Y ... Development zone 1, 110, 310, 410, 510, 610, 71
0, 810: Growth member 2, 120, 320, 420, 520, 620, 72
0,820 ... anchor member

Continued on the front page (72) Inventor Hiroaki Suzuki 7-55 Minamionkajima, Taisho-ku, Osaka Sumitomo Osaka Cement Co., Ltd. Cement and Concrete Research Laboratory (72) Inventor Tetsuo Kobayashi 585 Tomicho, Funabashi-shi, Chiba Prefecture Sumitomo Osaka In the Kanto Technical Center of Cement Co., Ltd. (56) References JP-A-10-33083 (JP, A) JP-A 58-170962 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) A01K 61/00

Claims (4)

(57) [Claims] A growing member having a growing part for growing algae is attached to a rope or the like, and the rope or the like is placed on the water surface.
Attach it to a floating raft, etc.
The rope in a vertical position with the direction substantially perpendicular to the water depth direction.
In the above-mentioned breeding section, the algae are hung on the vegetation while being held in the sea in the sea area so as to be suspended through the like.
Foster a self-defense function that can demonstrate a self-defense function ,
A method for creating a seaweed bed, wherein a seaweed bed is created by transferring a growing member having grown algae to the sea floor . 2. The growing member according to claim 1, wherein the growing member has an attachment portion to the anchor member having an anchor function and does not have an anchor function by itself, and the growing member having grown algae is installed on the sea floor. The seaweed bed according to claim 1, wherein the seaweed bed is relocated and attached to the anchor member to form a seaweed bed reef by the growing member and the anchor member, thereby forming a seaweed bed on the sea floor. Creation method. 3. The method according to claim 2, wherein the growing member can be detachably attached to the anchor member by the attaching portion. 4. A method in which algae spores or the like are previously attached to the growing member.
The method according to claim 1, 2 or 3 , wherein the growing member is held in the sea in a state where the seed yarns are attached .