JP2008022808A - Fishing reef and method for using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve conventional problems that in installing a structure such as a concrete block, etc., for colonization and growth of seaweed but the colonization and growth of the seaweed on the surface of the concrete or surface of wood is rather difficult and the sufficient colonization and growth of the seaweed necessitates much time and the total efficiency is poor. <P>SOLUTION: The structure for growing seaweed is provided, wherein the colonization of seaweed is active and growth of the seaweed is rapid, and contributes for activation of fish resources as aquaculture of seaweed itself, a spawning ground for fishes and a rearing spot for sea urchin, and ear shell. The structure is realized in a simple method by forming a concaved part on the reef structure and containing a structure composed of a net-like bag containing vegetable material such as forest product and grain crop by-product including wood tip comprising lumber from thinning, construction and demolition waste, in the concaved part. Much effects are obtained by colonizing seaweed in an environment suitable for growing the seaweed and then migrating reef to an environment suitable for fishes gather and proliferate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fishing reef that is mainly installed in the sea to promote adhesion and growth of seaweeds and thereby to establish the growth of fish.

Conventionally, concrete blocks, wood, and the like have been put into and submerged in the sea as structures for installing in the sea and promoting adhesion and growth of seaweeds. In addition, when using a concrete block, humus, charcoal, wood vinegar, etc. are mixed to promote the growth of seaweed.
JP 2005-006625 A

  However, depending on the conventional method, it is somewhat difficult for the seaweed to settle and grow on the concrete surface or the wood surface, and it took much time for the seaweed to sufficiently settle and grow, and the efficiency was poor. The method of promoting the growth of seaweed by mixing humus, charcoal, wood vinegar, etc., did not reach a remarkable effect due to the loss of active ingredients.

  In addition, depending on the conventional method, the efficiency is very poor for the economic effect of contributing to the revitalization of fishery resources as an aquaculture fishery for seaweed itself, and also as a spawning place for fish reefs or fish and a breeding place for sea urchins and abalone. It was.

  Also, depending on the conventional method, the reef itself is heavy and not only is difficult to install with a small number of people, but also the fish gather after attaching seaweed in an environment suitable for seaweed growth. -When it was attempted to move to an environment suitable for breeding, the work was very difficult and the efficiency was poor.

The present invention is a fishing reef which is installed in the sea to promote the growth and adhesion of seaweeds and thereby to establish the growth of fish. The fishing reef has a recess in its structure, and at least the thinning material or construction waste material in the recess It contains a structure in which plant materials such as forest products and cereal by-products including wood chips made from cocoon are stored in a net-like bag.
In the present invention, the fishing reef has a structure in which plant materials such as forest products and grain by-products including the wood chips are stored in a net-like bag and / or a part of the fishing reef. It contains sand and gravel.
In addition, the present invention is very active in the establishment and rapid growth of seaweeds by a simple method. It is possible to obtain contributing reefs, and the weight of the reefs themselves is light and the installation work with a small number of people is not only very easy, but also fish after attaching seaweeds in an environment suitable for growing seaweeds. When it is attempted to move to an environment suitable for gathering and breeding, it is very easy to work, and thus can greatly contribute to the industry.

  The reef has a very active seaweed colonization and rapid growth by a simple method, and the reef has a structure that contributes to the activation of fishery resources as an aquaculture fishery for seaweed itself and as a spawning place for fish. Having a recess in the recess and housing a structure in which plant materials such as forest products and cereal by-products containing wood chips made from at least thinned or construction waste are stored in a net-like bag. It was realized by using.

  In addition, seaweeds are very active and fast-growing by a simple method, contributing to the activation of fishery resources as an aquaculture fishery for seaweeds itself, and as a place for spawning fish and sea urchins and abalone. It was realized by transferring the seaweed in an environment suitable for the growth of seaweed and transferring it to an environment suitable for the fish to gather and grow.

  FIG. 1 is a schematic diagram of one embodiment of the present invention. In the present embodiment, a generally used concrete block structure has a recess, and the recess has a net-like plant material such as forest products and cereal by-products including wood chips made of at least thinned wood or construction waste. A structure that was stored in a bag was stored and created, and this was used as a fishing reef inserted into the sea. Here, in the figure, 11 is a fishing reef according to the present invention, 12 is a structure in which a recess and a plant material stored therein are stored in a net-like bag, and 13 is stored gravel.

  Here, the effect of plant materials such as forest products and cereal by-products on the adhesion growth of seaweeds and / or the establishment of fish will be described. In general, plant components are supplied from the land in various forms including fallen leaves and driftwood to the coastal sea area suitable as a fishing ground, thereby preying on the organisms to be bred and allowing fish to grow. As an example of this, Kazutaka Shimoda et al., Hokkaido Prefectural Fisheries Hatchery, in the paper “Estimating Mass Transfer Paths from Forests to Juvenile Salmon Trunks”, derived from plants supplied from forests through leafy shrimp and lepidopterous larvae. It showed that nutrition supported the growth of cherry salmon. (77 pages from March 2003, Special Report on Priority Areas “Evaluation of the Impact of Forests on Fishery Resources in Estuary Areas” on page 60)

  Also, Izumi Sakurai et al., Hokkaido Central Fisheries Experiment Station, reported that 20 of the nutrients that contribute to the growth of black flounder in the paper “Bioproduction of Tongari Kita-shrimp and young black flounder young fish that inhabit fallen leaf pools in the Norikawa estuary”. It was shown that over 50% depended on plant-derived nutrients, mainly fallen leaves, through Tongari Kitako-shrimp. (From March, 2003, Special Report on Priority Areas “Evaluation of the Impact of Forests on Fishery Resources in the Estuary” page 103, page 116)

  The authors have used a net-like bag to store plant materials such as forest products and cereal by-products, including wood chips made from thinned wood or construction waste, which have been used for tree planting and civil engineering. Although we have eagerly studied its use, etc., in light of the above-mentioned papers, etc., we have found that it can be used in the sea and have arrived at the present invention.

  In this embodiment, a net-like bag is prepared and stored together with plant materials such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste material, and in the concave portion of the concrete block that forms the concave portion. I stored this bag. Furthermore, the gravel which prevents the stored structure from rising and flowing out was stored to obtain a fishing reef. As natural gravel, when natural stone is used as a raw material, it is effective for adhesion of seaweeds. Furthermore, it is possible to obtain a more effective fishing reef by using rocks that contain effective ingredients for the growth of seaweed etc. I can do it.

  The reefs manufactured as described above were loaded onto a ship, transported to an offshore installation point, and introduced into the sea from the ship for installation. Here, the fishing reef according to the present invention has a concave portion in its structure, and since the plant material stored in the bag is stored in this, the weight is light with respect to the size, and even one fisherman can work. It was possible.

  The fishing reef formed by the method of the present invention has been found to be very effective because it has a good seaweed colonization in the sea and its growth is fast. Especially in the sea near Hokkaido, it is known that kombu grows very well on the seaweed breeding body formed by the method of the present invention, which contributes to the cultivation of kombu itself, and also eats sea urchins and abalone etc. It also has an effect on resource activation. In addition, by realizing the regeneration of seaweed beds that are indispensable for spawning and growing fish, it was very effective in activating marine resources including fish.

  Furthermore, after the fishing reef according to the present invention is first installed in shallow water, which is a suitable environment for growing seaweeds, and attached to seaweeds, it is moved to a deep field, which is a suitable environment for fish to gather and multiply. When used, a very remarkable fish collection effect was obtained.

  According to the method of the present invention, the weight of the reef itself is light and the installation work by a small number of people is not only very easy, but also the fish gather after attaching the seaweed in an environment suitable for seaweed growth. When it was attempted to move to an environment suitable for propagation and use it, the work was very easy, and simple and efficient operation became possible. Further, a more effective fishing reef can be obtained by using, for example, a rock containing a component effective for the growth of seaweed such as graphite silica for gravel.

  As a fishing reef that is installed in the sea to promote the adhesion and growth of seaweeds and to establish the growth and growth of fish, the fishing reef has a recess in its structure, and wood chips made from at least thinned wood or construction waste are used as the raw material in the recess. Seaweeds are cultivated by a simple method of storing a structure in which plant materials such as forest products and cereal by-products are stored in a net-like bag. As a fishery, it is possible to obtain fish reefs that contribute to the activation of fishery resources as a spawning place for fish and as a breeding place for sea urchins and abalone, etc., and the weight of the reef itself is light and installation work with a small number of people is very easy. Not only that, but after attaching seaweed in an environment suitable for growing seaweeds, it is very easy to move to a suitable environment for fish to gather and multiply and work. One in which it is possible to contribute Naru great industrial me.

It is a schematic diagram showing an example of a fishing reef according to the present invention. (Example 1)

Explanation of symbols

11 11 is a fishing reef according to the present invention 12 a structure in which a recess and a plant material stored therein are stored in a net-like bag 13 a stored gravel

Claims (4)

A fishing reef that is installed in the sea to attach and cultivate seaweeds and thereby to establish the growth of fish. The fishing reef has a recess in its structure, and at least the thinning or construction waste is used as a raw material in the recess. A fishing reef comprising a structure in which plant materials such as forest products and wood by-products including wood chips are stored in a net-like bag. A fishing reef that is installed in the sea to promote the growth and adhesion of seaweeds and thereby to establish the growth of fish. The fishing reef is made up of plant materials such as forest products and cereal by-products containing the wood chips. 2. A fishing reef according to claim 1, wherein gravel or the like is stored in the upper part of the structure stored in a bag and / or a part of the fishing reef. It is a method of using a reef to install and cultivate seaweeds in the sea and to establish the growth and growth of fish, and after the seaweeds are attached in an environment suitable for the growth of seaweeds, the fish gather and propagate A method for using a fishing reef, wherein the reef is used by being moved to a suitable environment. A method of using a fish reef for installation in the sea to promote the growth and adhesion of seaweeds and thereby to establish the growth of fish. The fish reef has a recess in its structure, and at least the thinning or construction waste material is placed in the recess. Contains a structure in which plant materials such as forest products and grain by-products including wood chips as raw materials are stored in a net-like bag, and attaches seaweeds in an environment suitable for growing seaweeds. A method for using a fishing reef, wherein the method is used after being transferred to an environment suitable for gathering and breeding fish.

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