JP4489706B2 - Seaweed breeding reef - Google Patents

Seaweed breeding reef Download PDF

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JP4489706B2
JP4489706B2 JP2006014351A JP2006014351A JP4489706B2 JP 4489706 B2 JP4489706 B2 JP 4489706B2 JP 2006014351 A JP2006014351 A JP 2006014351A JP 2006014351 A JP2006014351 A JP 2006014351A JP 4489706 B2 JP4489706 B2 JP 4489706B2
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algae
frame
attached
growing
holder
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JP2007195409A (en
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裕明 鈴木
三彦 川畑
幸治 園部
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Sumitomo Osaka Cement Co Ltd
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Sumitomo Osaka Cement Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Description

本発明は、海底や湖底などに配設し水中に生息する生物の生育に適した藻類を育成し藻場を造成するための藻場増殖礁に関するものである。   The present invention relates to an algae-bed breeding reef for cultivating algae suitable for the growth of organisms that are arranged on the seabed or lake bottom and that inhabit underwater, and create algae beds.

従来、魚礁として利用するために藻類を増殖させる藻場増殖礁としては、天然の岩場、テトラポットやコンクリートブロック、或いは、これらコンクリート製品を重積したりその間に自然石を配設したもの等が利用されてきた。ところで近時、主に海域において、水温や水質の変化或いは食害等の様々な原因によって藻類が死滅してしまういわゆる磯焼け現象が大きな問題となっている。また、柔らかい藻類が次第に硬い藻類にとってかわられて有用な藻類が締め出されたり、石灰藻が着生することにより岩礁の表面が非常に硬い石灰質で覆われ次に新たな藻類が着生しにくくなるという問題もある。このような問題から、磯焼けにより消滅した藻場の再生や新規の造成が火急の課題となっている。   Conventionally, as an algae pond breeding reef that propagates algae for use as a fish reef, there are natural rock pits, tetrapots and concrete blocks, or those in which these concrete products are stacked or natural stones are arranged between them. Has been used. Recently, mainly in the sea area, a so-called burning phenomenon in which algae are killed due to various causes such as changes in water temperature, water quality or food damage has become a major problem. Also, soft algae are gradually replaced by hard algae, and useful algae are locked out, or the formation of lime algae causes the surface of the reef to be covered with very hard calcareous material, which makes it difficult for new algae to grow. There is also a problem. Because of these problems, the regeneration and new creation of seaweed beds that have disappeared due to the burning of firewood has become an urgent issue.

このような藻場造成方法の理想としては、植食生物等による食害被害を受けない程度に生育した藻類の根が活着した天然の巨石等を磯焼け地区に多数投入できれば海中林の再生が可能であると考えられるが、そのような藻類が活着した巨石を探し出す手間や巨石の運搬に要する手間や費用などを考慮すると、このような方法はあくまで理想であって現実的には不可能である。   The ideal way to create a seaweed bed is to regenerate marine forests if a large number of natural boulders, such as the roots of algae grown to the extent that they are not damaged by vegetative organisms, can be introduced into the firewood burning area. However, considering the time and effort required to find a megalith settled by such algae and the time and expense required to transport the megalith, this method is ideal and impossible in practice. .

そこで、例えば特許文献1に示されるように、ケーソンのフーチング上に藻類の定着や魚介類の蝟集を計る藻類定着体兼魚介類蝟集体を設置すると共に、藻類定着体兼魚介類蝟集体内に栗石やカキ殻等の藻類定着材を充填させた蛇籠を詰めることで、藻場や魚礁の回復あるいは再生を計る試みがなされている。
特開2004−68379号公報
Therefore, for example, as shown in Patent Document 1, an algae fixing body and seafood collection body for measuring algae colonization and seafood collection is installed on a caisson footing, and a chestnut stone is placed in the algae fixing body and seafood collection body. Attempts have been made to restore or regenerate seaweed beds and fish reefs by packing gabions filled with algae fixing materials such as oyster shells and oyster shells.
JP 2004-68379 A

ところが、このような構成のものであると、藻類定着体兼魚介類蝟集体はその内部に蛇籠を詰めているため、フーチング上に設置するに際して大がかりな重機や台船が必要となる。つまり、藻類が定着して少なくとも十分な大きさの藻場が形成されるまでの期間、藻類定着体兼魚介類蝟集体をフーチング上に安定して設置しておかなければならず、そのためには藻類定着体兼魚介類蝟集体自体を十分な重さのものとするか、その内部に詰める蛇籠の重量を重くする必要がある。そしてこのように、重量物とすることにより、例えば漁船などの比較的小さな船で運搬して、人手で設置作業をすることを困難にするものである。したがって、費用や作業効率、造成すべき藻場の規模などの点からも割に合わない場合が発生する。   However, in the case of such a configuration, the algae-fixing and seafood assemblage is filled with gabions inside, so that a large heavy machine or a trolley is required for installation on the footing. In other words, the algae anchorage and seafood collection must be stably placed on the footing until the algae settle and at least a sufficiently large algae field is formed. It is necessary to make the algae colony and seafood collection itself of sufficient weight, or to increase the weight of the gabions packed inside. In this way, by using a heavy object, it is difficult to carry it by a relatively small boat such as a fishing boat and manually perform the installation work. Therefore, it may not be worth the cost, work efficiency, and the size of the seaweed beds to be created.

また、藻類定着体兼魚介類蝟集体に藻類が定着し始めた時期に、つまり藻類が十分に生育していない幼芽の状態である時期に、藻食性の魚類が藻類定着体兼魚介類蝟集体に群がると、定着し始めた藻類が育たないことがある。その結果、藻類定着体兼魚介類蝟集体により藻場が形成されるまでに長期間を要したり、あるいは生育し始めた藻類が消滅することで、藻場とはなり得ない場合が生じた。   Also, when the algae begin to settle in the algae colonies and seafood assemblages, that is, when the algae are in the state of shoots that are not sufficiently grown, If you gather in a collection, the algae that have started to settle may not grow. As a result, it took a long time for the algae ground to be formed by the algae colony and seafood assemblage, or the algae that started growing disappeared, which could not become a seaweed place. .

そこで本発明は、このような不具合に鑑みて、設置のために大がかりな装置などを必要とせず、しかも藻食性の魚類の接触を阻止して確実に藻類を育成することができる藻場増殖礁を提供するものである。   Therefore, in view of such problems, the present invention does not require a large-scale device for installation, and further prevents the contact of algal-eating fish and can reliably grow algae. Is to provide.

すなわち、本発明の藻場増殖礁は、水底に配置し藻場を形成するためのものであって、藻類を育成し活着させ得る育成部材と、人為的に持ち運びできる程度に軽量な保持具と、藻類を食する魚類が育成部材に活着した藻類に接近することを阻止する阻止手段とを具備してなり、保持具が、移動を不能にする物品を収納し得る収納空間を具備して育成部材が取付可能に形成される収納部と、阻止手段を収納部に取り付けられた育成部材を包囲して取り付ける取付手段とを備え収納部が、金属線により形成され水を貯留不能な籠であり、籠が、フレームと、そのフレームを上下に二分する位置に固定される横棒と、横棒と横棒より下に位置するフレームの部分との間に取り付けられる網とからなる側面部材及び側面部材のフレームと同じ大きさのフレームの全面に網を張った上下面部材を連結して形成され、育成部材を取り付けた部位を阻止手段が覆うことを可能にするように横棒より上のフレームの部分が育成部材と阻止手段とを離間させる取付手段となり、保持具は組み立ててない状態で設置域に運搬されて船上にて組み立てられることを特徴とする。 That is, the algae breeding reef of the present invention is for forming an algae plot placed on the bottom of the water, a growing member capable of growing and energizing algae, and a holder that is lightweight enough to be carried artificially And a preventing means for preventing fish that eat algae from approaching the algae settled on the growing member, and the holder has a storage space that can store articles that cannot be moved. a housing portion which member is attachable to form, the blocking means and a mounting means for mounting surrounding the development member mounted in the housing part, housing part, the water formed in the reservoir non cage with a metal wire A side member comprising a frame, a horizontal bar fixed at a position that bisects the frame, and a net attached between the horizontal bar and a portion of the frame located below the horizontal bar , and as large as the frame side members It is formed by connecting the upper and lower surfaces member over the entire surface pitched net frame, blocking frame portion above the cross bar so as to allow the cover is blocking means sites attached to cultivate member and nurturing member The holding means is transported to an installation area in an unassembled state and assembled on a ship .

このようなものであれば、保持具が軽量で、その保持具に育成部材を取り付ける構成であるので、保持具を容易に運搬することが可能であり、運搬や設置に要する作業効率を高くすることが可能になる。また、保持具の収納部に取り付けた育成部材に魚類が接近することを阻止手段で阻止するので、藻類の生育を妨害する魚類による浸食を防ぐことが可能になる。   If it is such, since a holder is lightweight and it is the structure which attaches a growth member to the holder, it can carry a holder easily and raises the work efficiency required for conveyance and installation. It becomes possible. In addition, since the fish is prevented from approaching the growing member attached to the holding portion of the holder by the blocking means, it is possible to prevent erosion by the fish that hinders the growth of algae.

保持具を軽量にして海底もしくは湖底などの水底への設置を容易にするためには、収納部が、水を貯留不能な容器であり、取付手段が、育成部材と阻止手段とを離間させる棒部材からなるものが好ましい。容器は、移動を不能にする物品を収納し得るものであり、かつ水を貯留し得ないものであれば、その形状、材質、構造などは特に限定しない。例えば、容器は、箱形状をしており、箱形状を形成する少なくとも一面の壁に貫通孔があいているもの、パンチングメタルのように多数の貫通孔が設けられた板材からなるもの、可撓変形可能な鋼棒材を網状にしてなるものなどである。特には、容器としては、金属線により形成された籠が好ましい。このような容器は軽量であるので、物品が、籠内に単一では人手で取り扱い得る程度に軽量で所定量集合することで籠が移動することを不能にする重し部材からなるものが好ましい。重し部材としては、石、コンクリート片、貝殻などが挙げられる。   In order to reduce the weight of the holder and facilitate installation on the bottom of the sea or lake bottom, the storage part is a container that cannot store water, and the attachment means separates the growth member and the blocking means. What consists of a member is preferable. The container is not particularly limited in its shape, material, structure, etc. as long as it can store articles that cannot be moved and cannot store water. For example, the container has a box shape, and has a through hole in at least one wall forming the box shape, a container made of a plate material provided with a number of through holes such as punching metal, a flexible For example, a deformable steel bar is formed in a net shape. In particular, the container is preferably a ridge formed of a metal wire. Since such a container is lightweight, it is preferable that the article is made of a weight member that is light enough to be handled by a single person in the bag and gathers a predetermined amount so that the bag cannot move. . Examples of the weight member include stones, concrete pieces, and shells.

上述のように、容器を籠とする場合、籠は具体的には、フレームと、そのフレームに張られる網とからなるものが好ましい。この場合に、阻止手段の取付を容易にするとともに、構成を簡略化するために、育成部材を取り付けた部位を阻止手段が覆うことを可能にするようにフレームに一体に棒部材を形成してあるものが好適である。この場合に、阻止手段としては、網からなるものが挙げられる。   As described above, when a container is used as a bag, specifically, the bag preferably includes a frame and a net stretched on the frame. In this case, in order to facilitate the attachment of the blocking means and simplify the configuration, a rod member is formed integrally with the frame so as to allow the blocking means to cover the portion where the growth member is attached. Some are preferred. In this case, examples of the blocking means include those made of a net.

本発明は、以上説明したような構成であり、保持具を容易に運搬することができ、運搬や設置に要する作業効率を高くすることができる。また、保持具の収納部に取り付けた育成部材に魚類が接近することを阻止手段で阻止するので、藻類の生育を妨害する魚類による浸食を防ぐことができ、早期に藻場を形成することができる。   The present invention is configured as described above, can easily transport the holder, and can increase the work efficiency required for transportation and installation. In addition, because the blocking means prevents fish from approaching the growing member attached to the storage part of the holder, it can prevent erosion by fish that hinder the growth of algae, and can form an algae field at an early stage. it can.

以下、本発明の一実施形態を、図1〜5を参照して説明する。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

この実施形態の藻場増殖礁100は、海底に配置されて藻場を形成するものである。藻場増殖礁100は、藻類SWを育成し活着させ得る育成部材1と、その育成部材1を取り付ける保持具2と、藻類SWを食する魚類が育成部材1に活着した藻類SWに接近することを阻止する阻止手段である魚網3とを備えている。   The seaweed breeding reef 100 of this embodiment is arranged on the sea floor to form a seaweed bed. The algae breeding reef 100 has a growth member 1 capable of growing and energizing the algae SW, a holder 2 to which the growth member 1 is attached, and a fish that eats the algae SW approaching the algae SW that has been activated on the growth member 1. And a fish net 3 which is a blocking means for blocking the above.

育成部材1は、コンクリート製のもので、例えば長方形の板状をしており、その表面に凹凸部11が形成してあり、その表面のほぼ中央に平坦な裏面に貫通する取付孔12が形成してある。具体的には、この育成部材1の表面には、自然石を模した岩石状の凹凸部11と、胞子を付着させた糸を巻き付けるための突起部13とが形成してあり、凹凸部11の間に固定部材4を配置するための空間が設けてある。   The growing member 1 is made of concrete and has, for example, a rectangular plate shape, and has an uneven portion 11 formed on the surface thereof, and a mounting hole 12 penetrating through the flat back surface is formed at substantially the center of the surface. It is. Specifically, the surface of the growing member 1 is formed with a rock-like uneven portion 11 that imitates a natural stone, and a protruding portion 13 for winding a thread with a spore attached thereto. A space for arranging the fixing member 4 is provided between them.

育成部材1は、保持具2に取り付けるに先立って、藻類SW例えばアラメを活着させておく。育成部材1にアラメを活着させる方法としては例えば、特開2001299133号公報に記載のものが適用できる。すなわち、その方法は、まず、ロープに複数の育成部材1を取り付けて、そのロープを海に浮かべた筏に固定し、育成部材1を水深約3m以内の海中に吊り下げる。その際、ロープに取り付けたそれぞれの育成部材1は、凹凸部11を有する表面がほぼ垂直に立った状態となるようにして吊り下げるものである。筏を設置する海域は、アラメが自生している海域の近傍等に設定することが好ましいが、必ずしもこの限りではない。 Prior to attaching the growing member 1 to the holder 2, the algae SW, for example, alame, is alive. As a method of survival of Eisenia to foster member 1 is, for example, JP 2001 - can be applied as described in 299133 JP. That is, in the method, first, a plurality of growing members 1 are attached to a rope, the ropes are fixed to a ridge floating in the sea, and the growing member 1 is suspended in the sea within a depth of about 3 m. At that time, each of the growing members 1 attached to the rope is suspended so that the surface having the concavo-convex portions 11 is substantially vertical. Although it is preferable to set the sea area where the coral is installed in the vicinity of the sea area where Alame grows naturally, it is not necessarily limited to this.

潮流に乗って流れてくるアラメの胞子が育成部材1に形成した凹凸部11に付着すると、十分な日光と潮流による新鮮な海水を受けてアラメが生育し凹凸部11に根を張って活着する。この実施形態においては、アラメの胞子の育成部材1に対する付着をより確実且つ迅速なものとするために、育成部材1に予め胞子を付着させた糸(クレモナ糸)7を巻き付けている。   When the spore of alame flowing on the tidal current adheres to the uneven portion 11 formed on the growing member 1, the alame grows by receiving sufficient sunlight and fresh seawater caused by the tidal current, and roots on the uneven portion 11 and takes root. . In this embodiment, in order to more reliably and quickly attach the larvae spores to the growing member 1, a thread (Cremona yarn) 7 on which the spores are previously attached is wound around the growing member 1.

その際、育成部材1の凹凸部11を形成していない側の裏面はほぼ平坦であるので、2枚の育成部材1をそれぞれの裏面同士を合わせた状態で凹凸部11を設けた表面に2本のロープを掛け渡し、それらロープを取付孔12に通した例えば市販の合成樹脂製結束バンド等で拘束することによって、上述した方法の2倍の枚数の育成部材1を筏から吊り下げるようにすることもできる。ウニ等の植食生物がアラメの幼葉を容易に食べるので、アラメをその成長点まで一度で食べられない程度まで十分に成長させるため、このような垂下式で中間育成し、その後、海底に移設することで、アラメが食害被害を被りにくくなる。   At this time, since the back surface of the growth member 1 on which the uneven portion 11 is not formed is substantially flat, the two growth members 1 are formed on the surface on which the uneven portion 11 is provided in a state where the respective back surfaces are combined. By tying the ropes of the book and restraining the ropes with, for example, a commercially available synthetic resin binding band passed through the mounting hole 12, the number of the growing members 1 twice that of the above-described method is suspended from the cage. You can also Herbivores such as sea urchins easily eat larvae's young leaves, so in order to grow the larvae to the point where it can not be eaten at one time, it is cultivated by such a hanging type, and then on the seabed The relocation will make it difficult for alame to suffer damage.

保持具2は、移動を不能にする物品である重し部材5を収納し得る収納空間SPを具備して育成部材1を取り付けることができる収納部たる容器21と、その容器21に一体に形成された棒部材からなる魚網3の取付手段22とを備えている。この実施形態における保持具2は、効率よく軽量化を図るために、素材を丸鋼棒や金属線にしている。   The holder 2 includes a storage space SP that can store a weight member 5 that is an article that cannot be moved, and a container 21 that is a storage unit to which the growing member 1 can be attached, and is formed integrally with the container 21. And a mounting means 22 for the fish net 3 made of a bar member. In order to reduce the weight efficiently, the holder 2 in this embodiment is made of a round steel bar or a metal wire.

重し部材5は、単一では人手で取り扱い得る程度に軽量で所定量集合することで保持具2の移動を不能にするものであればその材質や形状などは限られるものではなく、例えば蛇篭において使用するような石、コンクリート片などや、貝殻などである。容器21は、ほぼ正方形状をなす鋼棒製のフレーム21a,21dと、そのフレーム21a,21dに張られる網21b,21gとにより作製されるものである。取付手段22は、容器21を構成するフレーム21a,21dの部分を使用して実現される。なお、図示の都合上、図1においては、重し部材5を省略して示している。実際には、重し部材5は、容器21の中にほぼいっぱいに入れられるものである。   The weight member 5 is not limited in material and shape as long as the weight member 5 is light enough to be handled by a single hand and can be moved by a predetermined amount so that the holder 2 cannot be moved. Such as stones, concrete pieces, and shells. The container 21 is produced by frames 21a and 21d made of steel rods having a substantially square shape, and nets 21b and 21g stretched on the frames 21a and 21d. The attachment means 22 is realized by using the portions of the frames 21a and 21d constituting the container 21. For convenience of illustration, the weight member 5 is omitted in FIG. Actually, the weight member 5 is placed almost completely in the container 21.

容器21は、図2、3、4に示すように、フレーム21aの下半分に、金属線を編むことにより形成される網21bを張った側面部材21c四枚により容器21側面を形成し、側面部材21cのフレーム21aと同じ大きさのフレーム21dの全面に網を張った上下面部材21eの上部取付用の一枚を、側面を形成している側面部材21cの網21bの上縁に沿って配置するとともに、側面を形成している側面部材21cの下縁に沿って下部取付用の上下面部材21e一枚を配置して形成するものである。側面部材21cは、ほぼ正方形のフレーム21aと、そのフレーム21aを上下に二分する位置に固定される横棒21fと、横棒21fより下に位置するフレーム21aの部分との間に取り付けられる網21bとで構成される。また、上下面部材21eは、側面部材21cと同等のフレーム21dと、そのフレーム21dの四辺に関わって取り付けられる網21gとで構成される。   As shown in FIGS. 2, 3, and 4, the container 21 has a side surface of the container 21 formed by four side members 21c having a net 21b formed by braiding metal wires in the lower half of the frame 21a. One upper mounting member for the upper and lower surface members 21e having a net covering the entire surface of the frame 21d having the same size as the frame 21a of the member 21c is disposed along the upper edge of the net 21b of the side member 21c forming the side surface. The upper and lower surface members 21e for lower mounting are disposed and formed along the lower edge of the side surface member 21c forming the side surface. The side member 21c is a net 21b attached between a substantially square frame 21a, a horizontal bar 21f fixed at a position that bisects the frame 21a, and a portion of the frame 21a positioned below the horizontal bar 21f. It consists of. Further, the upper and lower surface member 21e includes a frame 21d equivalent to the side member 21c and a net 21g attached in connection with the four sides of the frame 21d.

このような側面部材21c四枚と上下面部材21e二枚とを組み合わせて、側面部材21cのフレーム21aの下半分の部分に網21bで包囲された収納空間SPが形成されるものである。側面部材21c同士、及び側面部材21cと上下面部材21eとは例えば、複数箇所においてU字ボルト(図示しない)により結合するものである。フレーム21a,21dに張られる網21b,21gの目の大きさは、網21b,21gで形成された容器である籠の内部に入れる重し部材5の大きさに合わせて決定すればよく、一例として蛇篭の大きさが挙げられる。なお、フレーム21a,21dは例えば、直径が16mmなどの丸鋼棒を用い、網21b,21gを形成する金属線は例えば、鉄線に亜鉛メッキを施した直径が8mmのものを用いる。金属線は、ステンレス製であってもよく、塩に対する耐性が高く、重し部材5の流出を防止できる強度を有するものであればよい。   The storage space SP surrounded by the net 21b is formed in the lower half portion of the frame 21a of the side member 21c by combining the four side members 21c and the two upper and lower surface members 21e. The side members 21c, and the side members 21c and the upper and lower surface members 21e are coupled to each other by, for example, U-shaped bolts (not shown). The size of the meshes 21b and 21g stretched on the frames 21a and 21d may be determined in accordance with the size of the weight member 5 to be placed inside the bag which is a container formed by the meshes 21b and 21g. The size of a gabion can be mentioned. The frames 21a and 21d are, for example, round steel bars having a diameter of 16 mm or the like, and the metal wires forming the nets 21b and 21g are, for example, those having a diameter of 8 mm obtained by galvanizing iron wires. The metal wire may be made of stainless steel, as long as it has high resistance to salt and has strength to prevent the weight member 5 from flowing out.

容器21つまり籠は、側面部材21cと上下面部材21eとをそれぞれ単体の状態で藻場増殖礁100の設置現場又は設置現場の海上まで運搬し、その場所において組み立てるものであってもよい。したがって、側面部材21cと上下面部材21eとは、小型の漁船に搭載し得る大きさにすることにより、運搬手段が小型であっても、複数の藻場増殖礁100を組み合わせることにより比較的大きな藻場を形成することが可能になる。組み立てた容器21(籠)において、側面部材21cの網21bより上側に位置する上下面部材21eが、育成部材1の取付部位になる。そして容器21(籠)を組み立てることによって、容器21(籠)より上に位置し、側面部材21cの網21bが張られていないフレーム21aの部分が、育成部材1と阻止手段である魚網3とを離間させる取付手段22として機能する。   The container 21, that is, the dredger, may be configured such that the side surface member 21 c and the upper and lower surface members 21 e are transported to the installation site of the seaweed breeding reef 100 or the sea of the installation site in a single state, and assembled at that location. Therefore, the side surface member 21c and the upper and lower surface members 21e are relatively large by combining a plurality of seaweed breeding reefs 100, even if the transporting means is small by making the size capable of being mounted on a small fishing boat. It becomes possible to form a seaweed bed. In the assembled container 21 (籠), the upper and lower surface members 21e located above the net 21b of the side member 21c are the attachment parts of the growing member 1. Then, by assembling the container 21 (carp), the portion of the frame 21a that is located above the container 21 (carp) and the net 21b of the side member 21c is not stretched is the growth member 1 and the fish net 3 that is a blocking means. Functions as attachment means 22 for separating the two.

このような容器21(籠)に対して、育成部材1は、側面部材21cの横棒221fに取り付けられる上部取付用の上下面部材21eの網21gを形成する金属線に取り付けられるものである。具体的には、図5に拡大して示すように、育成部材1の上面の凹凸部11の間に固定部材4を置き、その固定部材4と網21gを形成する金属線とを取付孔12に通した取付用線材6により結合して、育成部材1を上下面部材21eの網21gに固定するものである。育成部材1は、網21gを構成する金属線に固定するものであるが、育成部材1の両端が取り付けた金属線以外の金属線に接触することにより、その取付姿勢は変化しない、つまり上下面部材21eに取り付けられた状態で、育成部材1の上面が常時上を向く姿勢のままとなるものである。このようにして、育成部材1の複数を上部取付用の上下面部材21eに取り付ける。取付用線材6は、針金や合成樹脂製の結束バンドなどを用いることができる。   The growing member 1 is attached to the metal wire forming the net 21g of the upper and lower surface member 21e for upper attachment attached to the horizontal bar 221f of the side member 21c with respect to such a container 21 (籠). Specifically, as shown in an enlarged view in FIG. 5, the fixing member 4 is placed between the concavo-convex portions 11 on the upper surface of the growing member 1, and the fixing member 4 and the metal wire forming the net 21 g are attached to the attachment holes 12. The growing member 1 is fixed to the net 21g of the upper and lower surface members 21e by being joined by the attachment wire 6 passed through the upper and lower surface members 21e. The growing member 1 is fixed to the metal wire constituting the net 21g. However, when the both ends of the growing member 1 are in contact with a metal wire other than the attached metal wire, the mounting posture does not change, that is, the upper and lower surfaces. In a state of being attached to the member 21e, the posture in which the upper surface of the growing member 1 always faces upward remains. In this way, a plurality of the growing members 1 are attached to the upper and lower surface members 21e for upper attachment. The attachment wire 6 can be a wire, a binding band made of synthetic resin, or the like.

この藻場増殖礁100は例えば、小型の漁船により設置海域まで運搬し、船上で設置準備を行った後に海中に投入し、海底の所定位置に設置するものである。すなわち、例えば、保持具2を形成する側面部材21cと上下面部材21eとを連結しないつまり組み立ててない状態で漁船に積み込む。そして、漁船が設置海域に到着した後、四枚の側面部材21cを角筒状になるように、それぞれのフレーム21aをU字ボルトにより結合し、その後に側面部材21cのフレーム21aの下端部分に下部取付用の上下面部材21eを同じくU字ボルトにより結合して、船上にて組み立てて容器21(籠)を作製する。作製した容器21(籠)は、ロープにより漁船の船首にあるアンカーようにローラを介して海中に吊しておく。   The seaweed breeding reef 100 is, for example, transported to an installation sea area by a small fishing boat, prepared for installation on the ship, introduced into the sea, and installed at a predetermined position on the seabed. That is, for example, the side surface member 21c and the upper and lower surface members 21e forming the holder 2 are loaded on the fishing boat in a state where they are not connected, that is, not assembled. And after a fishing boat arrives at an installation sea area, each frame 21a is connected with a U-shaped bolt so that four side members 21c may become a rectangular tube shape, and then, on the lower end portion of frame 21a of side member 21c The upper and lower surface members 21e for attaching the lower part are similarly joined by U-bolts and assembled on the ship to produce the container 21 (21). The produced container 21 (hull) is suspended in the sea through a roller like an anchor at the bow of a fishing boat by a rope.

このように容器21(籠)を船首から吊した状態で、残りの作業を行う。すなわち、まず容器21(籠)の中に重し部材5を入れる。重し部材5は、藻場増殖礁100が潮流により流されないのに十分な重量になるように入れるもので、単一では人手で取り扱い得る程度に軽量であるので、容易に容器21(籠)内に必要な所定量を満たすことができる。   In this way, the remaining work is performed with the container 21 (hull) suspended from the bow. That is, first, the weight member 5 is placed in the container 21 (bag). The weight member 5 is inserted so that the seaweed breeding reef 100 has a sufficient weight so as not to be washed away by the tide, and since it is light enough to be handled by a single person, the container 21 (籠) can be easily used. The predetermined amount required can be satisfied.

このように容器21(籠)を準備する一方、上部取付用の上下面部材21eに上述のようにして育成部材1を取り付ける。そして、育成部材1を上部取付用の上下面部材21eに所定の個数を取り付けた後、船首に吊している容器21(籠)の所定位置に運んで、U字ボルトを用いて固定する。このようにして、育成部材1を取り付けた上部取付用の上下面部材21eを側面部材21cの横棒21fに取り付けることにより、容器21(籠)を閉じた状態にするものである。   Thus, while preparing the container 21 (籠), the growing member 1 is attached to the upper and lower surface members 21e for upper attachment as described above. Then, after a predetermined number of the growing members 1 are attached to the upper and lower upper surface members 21e for upper attachment, they are carried to a predetermined position of the container 21 (hull) suspended from the bow and fixed using U-shaped bolts. In this way, the upper and lower members 21e for attaching the upper portion to which the growing member 1 is attached are attached to the horizontal bar 21f of the side member 21c, thereby closing the container 21 (籠).

容器21(籠)の上方には、側面部材21cのフレーム21aにより取付手段22が形成されているので、この取付手段22により漁網3を取り付ける。つまり、側面部材21cのフレーム21aの上半分は、育成部材1を取り付けた上下面部材21eの上方に離間して位置している。したがって、それらのフレーム21aにより形成された取付手段22により漁網3を取り付けると、漁網3は各育成部材1から離間した位置において各育成部材1を包囲するものである。したがって、育成部材1の上方には藻類が生育するのに十分な空間が形成されるとともに、その空間を含んで育成部材1に活着した藻類SWに、藻食性の魚類が接近し得ないようになるものである。   Since the attachment means 22 is formed by the frame 21a of the side member 21c above the container 21 (carp), the fishing net 3 is attached by the attachment means 22. That is, the upper half of the frame 21a of the side member 21c is located above the upper and lower surface members 21e to which the growing member 1 is attached. Therefore, when the fishing net 3 is attached by the attaching means 22 formed by these frames 21 a, the fishing net 3 surrounds each growing member 1 at a position separated from each growing member 1. Therefore, a space sufficient for algae to grow is formed above the growing member 1, and the algae-eating fish cannot approach the algae SW cultivated on the growing member 1 including the space. It will be.

以上のようにして漁網3を取り付けた後、藻場増殖礁100を海底に沈めて、所定の設置場所に設置する。   After attaching the fishing net 3 as described above, the seaweed breeding reef 100 is submerged in the seabed and installed at a predetermined installation location.

このように、育成部材1と保持具2とが別々になっており、しかも保持具2が人為的に持ち運びできる程度に、主としてフレーム21a,21dと網21b,21gとで形成される側面部材21c及び上下面部材21eにより形成されるので、運搬及び設置するに際して重機や台船を使用する必要がなく、したがって設置場所近傍の地形などに制限されることなく容易に設置することができる。また、保持具2の収納部つまり容器21(籠)には、石、コンクリート片、貝殻などからなる重し部材5を入れており、それら重し部材5同士の間には隙間が形成されるので、アワビなどの貝類の生息域として活用することができ、それらの貝類の養殖場を形成することができる。   In this way, the growing member 1 and the holder 2 are separated from each other, and the side member 21c formed mainly by the frames 21a and 21d and the nets 21b and 21g to such an extent that the holder 2 can be carried artificially. In addition, since it is formed by the upper and lower surface members 21e, it is not necessary to use heavy equipment or a trolley when transporting and installing, and therefore it can be easily installed without being restricted by the terrain near the installation location. Further, a weight member 5 made of a stone, a concrete piece, a shell, or the like is placed in the storage portion of the holder 2, that is, the container 21 (籠), and a gap is formed between the weight members 5. Therefore, it can be used as a habitat for shellfish such as abalone, and a farm for these shellfish can be formed.

しかも、保持具2に取り付けられた育成部材1は、フレーム21aにより形成された取付手段22にて取り付けられた漁網3により包囲されて保護されるので、海底において藻食性の魚類が育成部材1に活着した藻類SWに接触することを阻止し、藻類SWの生育が遅れたり消滅したりすることを確実に防止することができる。   Moreover, since the growing member 1 attached to the holder 2 is surrounded and protected by the fishing net 3 attached by the attaching means 22 formed by the frame 21a, the algae-eating fish on the sea floor is attached to the growing member 1. It is possible to prevent contact with the settled algae SW and reliably prevent the growth of the algae SW from being delayed or disappeared.

なお、本発明は、上記実施形態に限定されるものではない。   In addition, this invention is not limited to the said embodiment.

育成部材としては、上述したように、コンクリート製のものに限らず、藻類を活着させ得る素材であれば例えば、合成樹脂製の成型品、自然石、貝殻などであってよく、その形状についても限定されるものではない。しかしながら、上記実施形態のような籠である容器を保持具に用いる場合においては、容器の網の目の大きさに対応する大きさのものを使用するもので、条規実施形態のように結束バンドにより取り付けた場合に育成部材の藻類が活着した表面が常に海面の方向を向いているように、網の目により位置変更不能な状態取り付く大きさとするものである。さらにまた、育成部材は、藻類を活着させるに先だって胞子を付着させた糸は必ずしも必要ではなく、藻類を活着させたい表面に直接胞子を付着させておけばよい。   As described above, the growing member is not limited to a concrete member, and may be a synthetic resin molded product, natural stone, shell, etc., as long as it is a material that can energize algae. It is not limited. However, in the case where a container that is a bag as in the above embodiment is used as a holder, a container having a size corresponding to the size of the mesh of the container is used. When attached by (1), the surface of the growing member on which the algae are settled always faces the surface of the sea so that the position cannot be changed by the mesh of the mesh. Furthermore, the growing member does not necessarily need a thread to which spores are attached prior to activating the algae, and the spore may be attached directly to the surface on which the algae are to be entrapped.

阻止手段は、漁網以外に例えば、透光性を有して多数の貫通孔があけられた薄板であってもよい。つまり阻止手段は、藻食性の魚類が育成部材に活着した藻類に接触することを阻止でき、かつ藻類の生育を阻害しないものであればよいので、必ずしも網の形態である必要はない。   The blocking means may be, for example, a thin plate having translucency and having a large number of through holes in addition to the fishing net. That is, the prevention means need not necessarily be in the form of a net, as long as it can prevent the algae-eating fish from coming into contact with the algae cultivated on the growth member and does not inhibit the growth of the algae.

また、保持具の形状も、上述の実施形態に限定されるものではく、各種のものが考えられるが、重し部材を収容する容器の上面に育成部材の取付部位を準備しておき、容器に取り付けた育成部材から離間して阻止手段を取り付けられるように構成するものであればよい。この場合に、阻止手段の取付手段は、容器に一体的に設けられるものが好ましいが、容器とは別体の棒部材からなり、容器に設けられた取付部材例えばパイプ部材に、棒部材を挿入して固定することにより機能する構成のものであってもよい。このように取付手段が容器とは別体のものにあっては、取付手段と阻止手段が一体的になっているものであってもよい。   Further, the shape of the holder is not limited to the above-described embodiment, and various types are conceivable. However, the attachment part of the growing member is prepared on the upper surface of the container that accommodates the weight member, and the container What is necessary is just to comprise so that a prevention means can be attached spaced apart from the growth member attached to. In this case, the attachment means of the blocking means is preferably provided integrally with the container. However, the blocking means is composed of a bar member separate from the container, and the bar member is inserted into an attachment member provided on the container, for example, a pipe member. And may be configured to function by being fixed. Thus, when the attachment means is separate from the container, the attachment means and the blocking means may be integrated.

その他、各部の具体的構成についても上記実施形態に限られるものではなく、本発明の趣旨を逸脱しない範囲で種々変形が可能である。   In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

本発明の実施形態の斜視図。The perspective view of the embodiment of the present invention. 同実施形態の保持具の斜視図The perspective view of the holder of the embodiment 同実施形態の側面部材の正面図。The front view of the side member of the embodiment. 同実施形態の上下面部材の平面図。The top view of the upper-lower surface member of the embodiment. 同実施形態の育成部材の取付状態を示す斜視図。The perspective view which shows the attachment state of the growth member of the embodiment.

符号の説明Explanation of symbols

1…育成部材
2…保持具
3…漁網
22…取付手段
SP…収納空間
DESCRIPTION OF SYMBOLS 1 ... Growing member 2 ... Holder 3 ... Fishing net 22 ... Mounting means SP ... Storage space

Claims (3)

水底に配置し藻場を形成するためのものであって、
藻類を育成し活着させ得る育成部材と、
人為的に持ち運びできる程度に軽量な保持具と、
藻類を食する魚類が育成部材に活着した藻類に接近することを阻止する阻止手段とを具備してなり、
保持具が、移動を不能にする物品を収納し得る収納空間を具備して育成部材が取付可能に形成される収納部と、阻止手段を収納部に取り付けられた育成部材を包囲して取り付ける取付手段とを備え、
収納部が、金属線により形成され水を貯留不能な籠であり、
籠が、フレームと、そのフレームを上下に二分する位置に固定される横棒と、横棒と横棒より下に位置するフレームの部分との間に取り付けられる網とからなる側面部材及び側面部材のフレームと同じ大きさのフレームの全面に網を張った上下面部材を連結して形成され、育成部材を取り付けた部位を阻止手段が覆うことを可能にするように横棒より上のフレームの部分が育成部材と阻止手段とを離間させる取付手段となり、
保持具は組み立ててない状態で設置域に運搬されて船上にて組み立てられる藻場増殖礁。
It is for placing on the bottom of the water to form a seaweed bed,
A growth member capable of cultivating and energizing algae;
A holder that is lightweight enough to be carried artificially,
And a blocking means for preventing fish that eat algae from approaching the algae cultivated on the growing member,
A storage portion in which the holder has a storage space in which an article that cannot be moved can be stored and the growth member can be attached, and an attachment that surrounds and attaches the growth member attached to the storage portion to the prevention means. Means and
The storage part is a cage that is formed of a metal wire and cannot store water,
A side member comprising a frame, a horizontal bar fixed at a position that bisects the frame, and a net attached between the horizontal bar and a portion of the frame positioned below the horizontal bar , and a side surface A frame above the horizontal bar to allow the blocking means to cover the part to which the growth member is attached, formed by connecting the upper and lower surface members that are netted across the entire surface of the frame of the same size as the member frame The part becomes an attaching means for separating the growing member and the blocking means ,
The seaweed breeding reef that is transported to the installation area and assembled on the ship without the holder assembled .
物品が、籠内に単一では人手で取り扱い得る程度に軽量で所定量集合することで籠が移動することを不能にする重し部材からなる請求項1記載の藻場増殖礁。 2. The seaweed breeding reef according to claim 1, wherein the article is made of a weight member that makes it impossible to move the cocoon by gathering a predetermined amount so that the article can be handled by a single hand in the cocoon. 阻止手段が、網からなる請求項1又は2記載の藻場増殖礁。 The seaweed breeding reef according to claim 1 or 2 , wherein the blocking means comprises a net .
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Cited By (3)

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CN103168716A (en) * 2012-12-13 2013-06-26 浙江海洋学院 Bottle hole reef in frame structure
CN104429906A (en) * 2014-05-15 2015-03-25 浙江海洋学院 Combined type seaweed yield increasing device
CN105850706A (en) * 2016-04-05 2016-08-17 中国科学院南海海洋研究所 Temporary culture device for long-distance sea grass transplanting

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KR101351610B1 (en) * 2011-03-31 2014-01-17 김영심 Underwater Construct And Its Construction Method For Fusion Heater
JP5970192B2 (en) * 2012-01-17 2016-08-17 住友大阪セメント株式会社 How to grow algae
CN103070108B (en) * 2012-12-13 2014-04-23 浙江海洋学院 Fishery auxiliary breeding device
JP6168414B2 (en) * 2014-02-13 2017-07-26 住友大阪セメント株式会社 Installation method of algae growth net and algae growth equipment
CN113229194B (en) * 2021-02-05 2022-11-22 贵州工程应用技术学院 Three-dimensional freshwater fish germplasm resource protection reef

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103168716A (en) * 2012-12-13 2013-06-26 浙江海洋学院 Bottle hole reef in frame structure
CN104429906A (en) * 2014-05-15 2015-03-25 浙江海洋学院 Combined type seaweed yield increasing device
CN104429906B (en) * 2014-05-15 2016-06-01 浙江海洋学院 A kind of combined type marine alga increasing device
CN105850706A (en) * 2016-04-05 2016-08-17 中国科学院南海海洋研究所 Temporary culture device for long-distance sea grass transplanting

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