JP2006211985A - Structure for undersea installation and method for activating marine resource - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems wherein, formerly, the sufficient fixing and growth of seaweeds and the fixing and propagation of fish require much times and are inefficient because it is slightly difficult that the seaweeds are fixed and grown on the surface of concrete and the surface of wood in a fish bank using a concrete block or the like. <P>SOLUTION: The problems are solved by the following simple method. The method uses the structure obtained by storing in a net-shaped bag a vegetable material such as forest products using as a raw material at least wood chips obtained by using thinnings or a building waste material, and by-products of cereals. The structure enables the seaweeds to be fixed well in the sea, and has effects on the fixing and growth of organisms such as gammarids and shipworms which can be good feed for the fish 13. The structure can be a seaweed-growing body contributing for activation of marine resources as a fish bank, an egg-depositing site for the fish, or a growing site of sea urchin, abalone and the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure that is mainly installed in the sea and is intended to promote adhesion and growth of seaweeds and / or establishment and growth of fish.

Conventionally, a concrete block, wood, or the like has been placed and submerged in the sea as a structure for installing in the sea and promoting adhesion and / or growth of seaweeds. In addition, cross-girder structures and ships that were no longer needed were used.
JP 2005-006625 A

  However, depending on the conventional method, it is somewhat difficult for seaweed to settle and grow on the concrete surface or wood surface, and it takes a lot of time for the seaweed to sufficiently grow or fish to settle and propagate. Was bad. In addition, shrimp and snail beetles that feed on the quality of wood grow in wood, which may contribute to the establishment and propagation of fish. Was limited.

  In addition, depending on the conventional method, the economic effect of contributing to the activation of fishery resources by promoting the establishment and growth of fish and / or the growth and growth of organisms that serve as fish food and / or the adhesion and growth of seaweeds is greatly enhanced. Economic efficiency was poor.

The present invention is a structure that is installed in the sea for the purpose of adhering and growing seaweeds and / or fixing and growing fish, and the structure includes at least a wood chip made from thinned wood or construction waste. And plant materials such as cereal by-products are stored in a net-like bag.
By using the above method, the seaweeds can be easily settled at a low cost by a simple method and effective as aquaculture for seaweeds themselves. A structure can be obtained, which can greatly contribute to the industry.

  To obtain seaweed breeding bodies that contribute to the activation of fishery resources as an aquaculture fishery of seaweeds themselves and as a spawning place for fishery reefs or fishes, as seaweeds are very active and fast growing by a simple method. Plant materials such as forest products and cereal by-products containing at least wood chips made from thinned wood or construction waste as a structure for installing and growing seaweeds and / or fixing and growing fish. This was realized by using a structure housed in a bag.

  FIG. 1 is a schematic diagram of one embodiment of the present invention. In this embodiment, plants such as forest products and cereal by-products including wood chips that are made of at least thinned wood or construction waste as a structure for installation in the sea to promote adhesion and growth of seaweeds and / or establishment of fish A concrete lump was simultaneously stored in a structure in which a functional material was stored in a net-like bag, and this was used as a fishing reef. Here, in the figure, 11 is a structure in which plant material is housed in a net-like bag, 12 is a grown seaweed, and 13 is a fish.

  Here, the effects of plant materials such as forest products and cereal by-products on the adhesion and / or growth of seaweeds 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 grow, and fishes grow and settle. As an example of this, Kazutaka Shimoda et al., Hokkaido Prefectural Fisheries Hatchery, derived from a plant supplied from forests through leafy shrimp and lepidopterous larvae in the paper “Estimation of Mass Transfer Paths from Forests to Young Salmon Trout”. We showed that nutrition supports the growth of cherry salmon. (77 pages from the March 2003 issue, Special Area Report “Evaluation of the Impact of Forests on Fishery Resources in the Estuary” 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. The present invention has been intensively studied for its use, etc., but in light of the above-mentioned papers and the like, it has been found that this is utilized in the sea, and the present invention has been achieved.

  In this embodiment, a net-like bag is prepared, and concrete blocks are stored in this bag together with plant materials such as forest products and cereal by-products including at least wood chips made from thinned wood or construction waste. A structural body was obtained.

  The undersea installation structure manufactured as described above was loaded on a ship, transported to an offshore installation point, and introduced into the sea from the ship for installation. Here, in the present embodiment, the undersea installation structure according to the present invention was directly put into the sea, and this was submerged and installed on the seabed. By connecting with a plurality of ropes or the like, it is possible to make it strong against moving currents caused by ocean currents, and the effect can be enhanced.

  It has been found that the undersea installation structure formed by the method of the present invention is very effective because the seaweeds are well settled in the sea and the growth is fast. In addition, the plant material in the undersea installation structure of the present invention, coupled with the fact that it is crushed and housed, establishes the growth of organisms that are suitable food for fish such as leaf shrimps and beetles. It was very effective in activating marine resources including fish.

    Next, as another embodiment according to the present invention, plant materials such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste are housed in a net-like bag, and the structure It was used as a floating island structure by connecting the bodies and floating on the water surface.

  According to the method of this example, it was proved that seaweeds are well settled in the sea and the growth is fast, which is very effective. In addition, the plant material in the undersea installation structure of the present invention, coupled with the fact that it is crushed and housed, establishes the growth of organisms that are suitable food for fish such as leaf shrimps and beetles. It was very effective in activating marine resources including fish. In addition, by floating on the water surface, it can be used on limited sea surfaces such as sacrifices, and it also functions as a place where fish avoid foreign enemies and is very effective in activating marine resources including fish. It was.

  Next, as another embodiment according to the present invention, plant materials such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste are housed in a net-like bag, and the structure After connecting the body and connecting the structure, a heavy object is connected to at least one end, and a structure extending in the depth direction in the sea is formed, thereby promoting the establishment of fish and / or the adhesion and growth of seaweed. Used as illustrated.

  FIG. 2 is a diagram illustrating an example of a fishery resource activation method according to the present embodiment. Here, reference numeral 21 in the figure denotes a structure in which a plant material is housed in a net-like bag, and 22 denotes a heavy object connected to one end. According to the method of this embodiment, the undersea installation structure according to the present invention can be extended and installed in the depth direction in the sea, seaweeds are well fixed in the sea, and the area efficiency is excellent. It turned out to be effective.

  In addition, the plant material in the undersea installation structure of the present invention, coupled with the fact that it is crushed and housed, establishes the growth of organisms that are suitable food for fish such as leaf shrimps and beetles. It was very effective in activating marine resources including fish.

  Next, as another embodiment according to the present invention, plant materials such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste are housed in a net-like bag, and By installing the structure at the bottom of the aquaculture fishing net, the excrement of the cultured fish was purified and used to grow and proliferate organisms serving as fish food and / or attach and grow seaweeds.

  FIG. 3 is a diagram illustrating an example of a fishery resource activation method according to the present embodiment. In the figure, reference numeral 31 denotes a structure in which plant material is housed in a net-like bag, and 32 denotes an aquaculture fishing net. According to the method of the present embodiment, the layer of the plant material is formed at the bottom of the aquaculture net, so that the excrement of the farmed fish is prevented from accumulating on the sea floor and becoming sludge, and the material contained in the plant material Has been found to be very effective in maintaining the environment of the aquaculture area, as it helps prevent and prevent the corruption. In addition, the plant material in the undersea installation structure of the present invention, coupled with the fact that it is crushed and housed, establishes the growth of organisms that are suitable food for fish such as leaf shrimps and beetles. It was very effective in activating marine resources including cultured fish.

  Next, as another embodiment according to the present invention, a wood chip that is installed in the sea and is made of at least thinned wood or construction waste as a structure for growing seaweeds and / or fixing fish. A concrete material is stored simultaneously in a structure in which plant materials such as forest products and cereal by-products, and black silica powder or gravel are stored together in a net-like bag, and this is thrown into the sea as a fishing reef. Using.

  Here, the effect of black silica on adhesion growth of seaweed will be described. Black silica exhibits characteristic effects such as far-infrared emission, and can be used as a magnetic therapy device (Japanese Patent Laid-Open No. 2003-210592), or as a bathroom or indoor tile (Japanese Patent Laid-Open No. 2004). No. -353424) has been proposed. Paying attention to the above characteristics, the authors will improve the algae fixability and promote the growth of seaweeds by using black silica as a structure for installing and growing seaweeds in the sea. I found.

  The undersea installation structure manufactured as described above was loaded on a ship, transported to an offshore installation point, and introduced into the sea from the ship for installation. Here, in the present embodiment, the undersea installation structure according to the present invention was directly put into the sea, and this was submerged and installed on the seabed. By connecting with a plurality of ropes or the like, it is possible to make it strong against moving currents caused by ocean currents, and the effect can be enhanced.

  It has been found that the undersea installation structure formed by the method of the present invention is very effective because the seaweeds are well settled in the sea and the growth is fast. In addition, the plant material in the undersea installation structure of the present invention, coupled with the fact that it is crushed and housed, establishes the growth of organisms that are suitable food for fish such as leaf shrimps and beetles. It was very effective in activating marine resources including fish.

  At the same time, it was proved that the structure for installation in the sea according to the present example is very effective in fixing and growing seaweeds due to the effect of black silica, and its growth is fast and very effective. In particular, in the seas near Hokkaido, it has been found that kombu is very well established and grown on the undersea installation structure formed by the method of the present invention. It is also effective for activating resources such as abalone. In addition, by realizing the regeneration of seaweed beds that are indispensable for spawning and growth of fish, it was very effective in activating marine resources including fish.

  Plant-like materials such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste as a structure to be installed in the sea to grow and grow seaweeds and / or fish. By using a structure housed in a sack, seaweeds can be easily settled at a low cost by a simple method and effective as an aquaculture fishery for seaweeds. It is possible to obtain a structure for installation in the sea that contributes to the environment, and to enhance the activation effect by various usages, thereby making a great contribution to the industry.

It is the schematic which shows an example of the structure for underwater installation concerning this invention. Example 1 It is the schematic which shows an example of the activation method of the fishery resources concerning this invention. Example 3 It is the schematic which shows an example of the activation method of the fishery resources concerning this invention. Example 4

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Structure according to the present invention 12 Grown seaweed 13 Fish 21 Structure according to the present invention 22 Heavy article connected to one end 31 Structure according to the present invention 32 Fishing net for aquaculture

Claims (9)

A structure that is installed in the sea to establish and grow fish and / or grow organisms that serve as fish food and / or attach and grow seaweeds, the structure comprising at least thinning or construction waste A structure for installation in the sea, characterized in that plant materials such as forest products and cereal by-products containing wood chips as raw materials are stored in a net-like bag. A structure that is installed in the sea to establish and grow fish and / or grow organisms that serve as fish food and / or attach and grow seaweeds, the structure comprising at least thinning or construction waste It is characterized in that plant materials such as forest products and cereal by-products including wood chips as raw materials and heavy objects for the structure to sink or float in the middle are stored in a net-like bag. The undersea installation structure according to claim 1. A structure that is installed in the sea to establish and grow fish and / or grow organisms that serve as fish food and / or attach and grow seaweeds, the structure comprising at least thinning or construction waste 3. A plant material such as forest products and cereal by-products including wood chips as raw materials, and black silica powder or gravel are both housed in a net-like bag. The structure for underwater installation described. A structure that is installed in the sea to establish and grow fish and / or grow organisms that serve as fish food and / or attach and grow seaweeds, the structure comprising at least thinning or construction waste The plant material such as forest products and cereal by-products containing wood chips as raw materials is stored in a net-like bag, and the structure is connected using a plurality of ropes or the like. The submerged installation structure according to any one of claims 1 to 3. A method for activating marine resources using a structure for the establishment and growth of fish and / or the growth and / or growth of organisms that serve as fish food and / or the adhesion and growth of seaweeds installed in the sea, Plant material such as forest products and cereal by-products including wood chips that are made from at least thinned wood or construction waste, is stored in a net-like bag, and prey on plant and wood components contained in the structure. A method for activating fishery resources, characterized by fostering fish by cultivating leafy shrimps and beetles. A method for activating marine resources using a structure for the establishment and growth of fish and / or the growth and / or growth of organisms that serve as fish food and / or the adhesion and growth of seaweeds installed in the sea, Is a floating island-like structure in which plant materials such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste are stored in a net-like bag, and the structure is connected to float on the water surface. 6. The method for activating marine resources according to claim 5, wherein the structure is used for the establishment and growth of fish and / or adhesion and growth of seaweed. A method for activating marine resources using a structure for the establishment and growth of fish and / or the growth and / or growth of organisms that serve as fish food and / or the adhesion and growth of seaweeds installed in the sea, Plant material such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste material is housed in a net-like bag, and a heavy object is connected to at least one end after connecting the structure. 6. The method for activating marine resources according to claim 5, wherein a structure extending in the depth direction in the sea is formed, thereby fostering fish and / or adhering and growing seaweed. A method for activating marine resources using a structure for the establishment and growth of fish and / or the growth and / or growth of organisms that serve as fish food and / or the adhesion and growth of seaweeds installed in the sea, Is a net-like bag containing plant materials such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste, and heavy objects for the structure to sink in the sea. 6. The method for activating fishery resources according to claim 5, wherein the body is placed on the seabed to establish and / or grow fish and / or attach and grow seaweed. A method for activating marine resources using a structure for the establishment and growth of fish and / or the growth and / or growth of organisms that serve as fish food and / or the adhesion and growth of seaweeds installed in the sea, Is a net-like bag containing plant materials such as forest products and cereal by-products including wood chips made from at least thinned wood or construction waste, and heavy objects for the structure to sink in the sea, and 6. The structure is placed at the bottom of a fishery net for aquaculture to purify the excrement of cultured fish and to grow and / or grow organisms that serve as fish food and / or attach and grow seaweeds. The activation method of the marine resources described.

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