JP3044065U - Artificial fish reef to which algae easily attaches - Google Patents
Artificial fish reef to which algae easily attachesInfo
- Publication number
- JP3044065U JP3044065U JP1997004725U JP472597U JP3044065U JP 3044065 U JP3044065 U JP 3044065U JP 1997004725 U JP1997004725 U JP 1997004725U JP 472597 U JP472597 U JP 472597U JP 3044065 U JP3044065 U JP 3044065U
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- algae
- artificial
- blow
- natural
- weight block
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Artificial Fish Reefs (AREA)
Abstract
(57)【要約】
【課題】 海中に漂う天然の藻の付着率を増大させるこ
とができ、しかも、その天然藻を囲むように人工藻を配
置して魚介類の棲息、産卵等に適した環境を形成するこ
とができる人工魚礁を提供すること。
【解決手段】 海底に定置され、かつ、周面に開口部を
有する吹放ち重量ブロックと;この吹放ち重量ブロック
の中央部近傍に固定される部材であって、水中の天然藻
が付着し易い凹凸部を有し、かつ、通孔が形成された藻
付着部材と;この藻付着部材に付着する天然藻を囲むよ
うに配置された人工藻とを包含して構成するという手段
を採用した。
【効果】 天然藻および人工藻による相乗効果を奏し
て、魚介類にとって理想的な環境の人工魚礁を得ること
ができる。
(57) 【Abstract】 PROBLEM TO BE SOLVED: To increase the attachment rate of natural algae floating in the sea and to arrange artificial algae surrounding the natural algae, which is suitable for habitation and spawning of seafood. To provide an artificial fish reef capable of forming an environment. SOLUTION: A blow-off weight block which is placed on the seabed and has an opening on its peripheral surface; a member fixed near the center of the blow-off weight block, to which natural algae in water easily attaches A means was adopted that includes an algae-attaching member having a concavo-convex portion and having a through hole formed therein; and an artificial algae arranged so as to surround a natural algae attached to the algae-attaching member. [Effect] By producing a synergistic effect of natural algae and artificial algae, an artificial fish reef with an ideal environment for seafood can be obtained.
Description
【0001】[0001]
本考案は、人工魚礁の改良、更に詳しくは、海中に漂う天然の藻の付着率を増 大させることができ、しかも、その天然藻を囲むように人工藻を配置して魚介類 の棲息、産卵等に適した環境を形成することができる人工魚礁に関するものであ る。 The present invention can improve artificial fish reefs, and more specifically, can increase the rate of attachment of natural algae floating in the sea. The present invention relates to an artificial fish reef that can form an environment suitable for spawning.
【0002】[0002]
礁、堆、海山、海台などの隆起部が海中に形成された浅瀬においては、その隆 起部に海流が衝突して湧昇流や渦流が生じて海水の活発な垂直混合が行われる。 この垂直混合によって、海中の無機栄養塩類が大量に表層へ上がってきて表層で の植物性プランクトンの繁殖を促進し、それを餌とする動物性プランクトンや小 魚が其処へ誘引され、更には大形魚が来遊、滞留することになるため、このよう な浅瀬付近の水域は好適な漁場となる。 In shallow water where ridges such as reefs, banks, seamounts, and plateaus are formed in the sea, ocean currents collide with the ridges, causing upwelling and eddy currents and active vertical mixing of seawater. By this vertical mixing, a large amount of inorganic nutrients in the sea rises to the surface layer, promotes the reproduction of phytoplankton on the surface layer, attracts zooplankton and small fish that feed on it, and further Since the shaped fish come and come to stay, such waters near the shallows are suitable fishing grounds.
【0003】 ところが、上記の如き礁や堆等の海中の浅瀬は、地殻変動や海底火山等の偶然 が重なり長い年月をかけて形成されるものであるため、天然の礁等というのは、 沿岸域には然程に多くは存しない。However, since the shallow waters in the sea such as reefs and deposits as described above are formed over a long period of time due to the coincidence of crustal movements and submarine volcanoes, natural reefs, etc. There are not so many in coastal areas.
【0004】 このようなことから、天然の礁等に類似の環境を人工的に形成した人工魚礁が 数多く提案されている。この人工魚礁は通常、コンクリートブロックにて凹凸の 少ない枠状や箱状の略直方体に成形してあるため、海中に漂う天然の流れ藻が人 工魚礁の近傍に辿り着いたとしても、その天然の流れ藻が凹凸の少ない略直方体 の人工魚礁のブロック表面に引っ掛かって付着する可能性は小さい。また仮に、 海中の天然藻がブロック表面に付着したとしても、そのコンクリートブロックの 表面は堅くて平坦であるため、付着した天然藻が海流によって洗い流されてしま うことが多く、人工魚礁のブロック表面には海中の天然藻が付着し難いという問 題があった。From the above, many artificial fish reefs artificially forming an environment similar to a natural reef have been proposed. Since this artificial fish reef is usually molded with a concrete block into a frame-shaped or box-shaped rectangular parallelepiped with few irregularities, even if natural drifting algae floating in the sea arrive near the man-made fish reef, the natural It is unlikely that the flowing algae will be caught and attached to the block surface of an artificial fish reef that is a rectangular parallelepiped with few irregularities. Even if natural algae in the sea adheres to the surface of the block, the surface of the concrete block is hard and flat, so the natural algae that adheres is often washed away by the ocean current, and the surface of the artificial fish reef block surface. Had a problem that natural algae in the sea were difficult to attach.
【0005】 そこで、上記天然藻の代わりに藻草様の人工植毛体を人工魚礁の内部に固定し て林立させるという方法がある。この人工植毛体により、人工魚礁の内部に茂み や産卵場を生成することはできる。ところが、その藻草様植毛体は人工藻である ため、動物性プランクトンや小魚の餌には当然なり得ないうえに、天然藻が海中 の窒素、リン、ケイ素等の栄養塩類を元に炭酸ガスを摂取して光合成を行うこと から得られるような環境浄化作用も望むことはできない。[0007] Therefore, there is a method of fixing an alga-plant-like artificial hair transplant body in place of the above-mentioned natural algae inside the artificial fish reef to establish forests. With this artificial hair transplant, it is possible to create bushes and spawning grounds inside the artificial reef. However, since the alga-plant-like flocked body is an artificial algae, it cannot be naturally used as a feed for zooplankton and small fish, and natural algae generate carbon dioxide gas based on nutrients such as nitrogen, phosphorus, and silicon in the sea. We cannot hope for the environmental purifying effects that would be obtained from ingestion and photosynthesis.
【0006】[0006]
本考案は、従来の人工魚礁に上記の如き問題があったことに鑑みて為されたも のであり、海中に漂う天然の藻の付着率を増大させることができる人工魚礁を提 供することを目的としたものである。 The present invention has been made in view of the above problems of the conventional artificial fish reef, and an object thereof is to provide an artificial fish reef that can increase the attachment rate of natural algae floating in the sea. It is what
【0007】 また、本考案は、付着した天然藻を囲むように人工藻を配置して、魚介類の棲 息、産卵等に適した環境を形成することができる人工魚礁を提供することを目的 としたものである。Another object of the present invention is to provide an artificial fish reef that can arrange an artificial algae around the attached natural algae to form an environment suitable for habitation and spawning of seafood. It is what
【0008】[0008]
本考案者が上記技術的課題を解決するために採用した手段を、添附図面を参照 して説明すれば、次のとおりである。 The means adopted by the present inventors to solve the above technical problem will be described below with reference to the accompanying drawings.
【0009】 即ち、本考案は、海底に定置され、かつ、周面に開口部を有する吹放ち重量ブ ロックと; この吹放ち重量ブロックの中央部近傍に固定される部材であって、水中の天然藻 が付着し易い凹凸部を有し、かつ、通孔が形成された藻付着部材と; この藻付着部材に付着する天然藻を囲むように配置された人工藻とを包含して構 成するという手段を採用することによって、上記技術的課題を解決した点に特徴 がある。That is, the present invention is a blow-out weight block which is placed on the seabed and has an opening on the peripheral surface; and a member fixed near the center of this blow-off weight block, It is configured to include an algae-attaching member having a concavo-convex portion to which natural algae easily attaches and having a through hole formed therein; and an artificial algae arranged so as to surround the natural algae attached to the algae-attaching member. It is characterized in that the above technical problems are solved by adopting the means of doing.
【0010】[0010]
以下、本考案を添附図面に示す実施形態に基いて更に詳しく説明する。なお、 図1は本考案の第1実施形態である人工魚礁の斜視図、図2は第1実施形態人工 魚礁の側面説明図、図3は本考案の第2実施形態である人工魚礁の斜視図、図4 は第2実施形態人工魚礁の側面説明図、図5は第1または第2実施形態人工魚礁 の側面の開口部に網目状人工植毛体を固定した変形例で、内部の藻付着部材およ び人工藻を省略して示した人工魚礁の斜視図である。 Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings. 1 is a perspective view of an artificial fish reef according to a first embodiment of the present invention, FIG. 2 is a side view of an artificial fish reef according to a first embodiment of the present invention, and FIG. 3 is a perspective view of an artificial fish reef according to a second embodiment of the present invention. FIG. 4 is a side view of the artificial fish reef according to the second embodiment, and FIG. 5 is a modified example in which a mesh artificial flock is fixed to the side opening of the artificial fish reef according to the first or second embodiment. It is a perspective view of the artificial fish reef in which members and artificial algae are omitted.
【0011】 まず、本考案の第1実施形態である人工魚礁を図1および図2に基いて説明す る。図中、符号1で指示するものは、沿岸海域の浅瀬の海底に定置される吹放ち 重量ブロックである。この吹放ち重量ブロック1は、コンクリート材にて末広が り状の四角台錐形の枠体を成し、この四角台錐形の枠体の各面には略矩形の開口 部11・11・・・・が設けられて吹放ち状態となっている。そして、前記重量ブロック 1の上面には、4本の逆U字形吊手具12・12・・・・が固定してあり、これら吊手具 12・12・・・・に吊上クレーンのフック等を引っ掛けて移動させることにより、人工 魚礁を海底に沈設することができる。なお、吹放ち重量ブロック1は末広がり状 に成形してあるので、安定性に優れており、海流や波浪の激しい浅瀬であっても 十分使用可能である。First, an artificial fish reef according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. In the figure, what is indicated by reference numeral 1 is a blow-off weight block placed on the bottom of the shallow water in the coastal area. The blow-off weight block 1 is made of a concrete material to form a divergent quadrangular pyramid-shaped frame body, and each side of the quadrangular truncated cone-shaped frame body has a substantially rectangular opening 11. ... is provided and is in an open state. Further, four inverted U-shaped lifting gears 12, 12, ... Are fixed to the upper surface of the weight block 1, and the hooks of the hoisting crane are fixed to these lifting gears 12, 12 ,. An artificial fish reef can be sunk on the seabed by hooking it and moving it. Since the blow-off weight block 1 is formed in a flared shape, it has excellent stability and can be sufficiently used even in shallow water where the ocean current and waves are severe.
【0012】 符号2で指示するものは、海中に漂う天然の藻を効果的に付着させるための藻 付着部材である。第1実施形態においては、この藻付着部材2は鋼製のプレート 部材2aから成り、このプレート部材2aが前記吹放ち重量ブロック1の上端中 央部に固定されている。前記プレート部材2aは鋸歯状の凹凸部21を有し、この 凹凸部21に海中の天然藻が引っ掛かって付着し易くなっている。そして、前記鋸 歯状凹凸部21の各凹部には、スリット状の小通孔22・22・・・・が形成してあり、か つ、プレート部材2aの中央部には略矩形の大通孔23が形成してある。これらの 各小通孔22および大通孔23から海水が前記重量ブロック1の内部空間へ流入する ことにより、重量ブロック1内の中央部近傍に乱流や渦流が生成されて其処に海 中や海底の栄養塩類が滞留するので、この栄養塩類を求めてプランクトンが重量 ブロック1内の中央部近傍に蝟集してくる。また、プレート部材2aの鋸歯状凹 凸部21の上面に繊維等を植設して、天然藻の引っ掛かりを一層よくすることもで きる。What is designated by reference numeral 2 is an algae adhering member for effectively adhering natural algae floating in the sea. In the first embodiment, the algae-adhering member 2 is made of a steel plate member 2a, and the plate member 2a is fixed to the center of the upper end of the blow-off weight block 1. The plate member 2a has a saw-toothed concavo-convex portion 21, on which natural algae in the sea is easily caught and attached. Each of the concave portions of the saw-toothed concavo-convex portion 21 is provided with a slit-shaped small through hole 22, 22 ... And a substantially rectangular large through hole is formed in the center of the plate member 2a. 23 are formed. When seawater flows into the internal space of the weight block 1 through the small through holes 22 and the large through holes 23, turbulent flow and eddy current are generated in the vicinity of the central portion of the weight block 1 and the seawater or the seabed is generated there. Since the nutrient salts of the plankton are collected in the vicinity of the center of the weight block 1 in search of the nutrient salts. Further, fibers or the like can be planted on the upper surface of the sawtooth-shaped concave convex portion 21 of the plate member 2a to further improve the catch of natural algae.
【0013】 符号3で指示するものは、前記藻付着部材2に付着する天然藻を囲むように配 置された人工藻である。この人工藻3は、棒状の基幹部31と、この基幹部31に放 射状に植設された合成繊維毛32・32・・・・とから構成されており、これら合成繊維 毛32・32・・・・は天然の藻に似せて形成してある。前記合成繊維毛32・32・・・・は耐 腐蝕性の素材から成り、耐腐蝕性素材としてはポリプロピレンやポリエチレン等 のポリオレフィン系繊維、ポリエステル繊維、ポリアミド繊維(ナイロン)等を 使用可能である。第1実施形態においては、4本の人工藻3・3・・・・によって前 記重量ブロック1の中央部を囲むようにして左右対称に配置しながら各人工藻3 を前記プレート部材2aの裏面に吊下げ状態に固定してある。これにより、重量 ブロック1の中央部近傍に適度な茂みが形成されるとともに、各人工藻3自体は 魚介類の産卵場となる。What is indicated by reference numeral 3 is an artificial algae arranged so as to surround the natural algae attached to the algae attachment member 2. The artificial alga 3 is composed of a rod-shaped base portion 31 and synthetic fiber hairs 32, 32, ... Radially planted in the base portion 31, and these synthetic fiber hairs 32, 32. ... is formed to resemble natural algae. The synthetic fiber bristles 32, 32, ... Are made of a corrosion resistant material, and as the corrosion resistant material, a polyolefin fiber such as polypropylene or polyethylene, a polyester fiber, a polyamide fiber (nylon) or the like can be used. In the first embodiment, four artificial algae 3 are suspended from the back side of the plate member 2a while symmetrically arranging the four artificial algae 3 ... It is fixed in the lowered state. As a result, an appropriate bush is formed near the center of the weight block 1, and each artificial algae 3 itself serves as a spawning ground for seafood.
【0014】 つぎに、本考案の第2実施形態である人工魚礁を図3および図4に基いて説明 する。第2実施形態においては、海中の天然藻を付着させるための藻付着部材2 の形態が第1実施形態と大きく異なる。第2実施形態の藻付着部材2は、格子状 の籠部材2bから成り、この籠部材2bが前記吹放ち重量ブロック1の上端中央 部に固定されている。前記籠部材2bの内部には複数個の石状固体24・24・・・・( 本例にあっては、自然石を採用)が入れてあり、これらの自然石が第1実施形態 の鋸歯状凹凸部21と同様の機能、即ち前記自然石の表面に海中の天然藻を効果的 に引っ掛けて付着させるという機能を果たすことになる。Next, an artificial fish reef according to a second embodiment of the present invention will be described with reference to FIGS. 3 and 4. In the second embodiment, the form of the algae adhering member 2 for adhering natural algae in the sea is significantly different from that of the first embodiment. The algae adhering member 2 of the second embodiment comprises a lattice-shaped basket member 2b, and the basket member 2b is fixed to the center of the upper end of the blowout weight block 1. A plurality of stone-like solids 24, 24 ... (In this example, natural stones are used) are placed inside the basket member 2b, and these natural stones are the saw teeth of the first embodiment. The same function as the uneven portion 21 is fulfilled, that is, the function of effectively hooking and attaching natural algae in the sea to the surface of the natural stone.
【0015】 そして、籠部材2bの格子25間に形成された各隙間が第1実施形態の小通孔22 ・22・・・・および大通孔23と同様の機能、即ち前記格子25間の各隙間から海水が籠 部材2bの内部へ流入してその内部の自然石近傍に乱流や渦流が生成されるとい う機能を果たすことになる。これにより、籠部材2b内の自然石近傍に海中や海 底の栄養塩類が滞留するのに加えて、当該自然石の表面には海中の天然藻が付着 するので、籠部材2bの内部は天然藻と栄養塩類の双方が存在する絶好の餌場と なって大量のプランクトンが蝟集してくる。Each of the gaps formed between the lattices 25 of the basket member 2b has the same function as the small through holes 22 · 22 ··· and the large through holes 23 of the first embodiment, that is, each gap between the lattices 25. Seawater flows into the inside of the cage member 2b through the gap, and turbulence or eddy current is generated near the natural stone inside the cage member 2b. As a result, in addition to the nutrient salts in the sea and the bottom of the sea remaining near the natural stone in the cage member 2b, natural algae in the sea adheres to the surface of the natural stone, so the inside of the cage member 2b is natural. It becomes a perfect feeding ground where both algae and nutrients exist, and a large amount of plankton is collected.
【0016】 また、籠部材2bの格子25上部には4本の支持部26・26・・・・が突設してあり、 これら各支持部26が吹放ち重量ブロック1上端の四隅に連結してある。そして、 前記支持部26・26・・・・に第1実施形態と同様な4本の人工藻3・3・・・・が吊下げ 状態に各々固定してあり、これらの人工藻3・3・・・・によって籠部材2bの周囲 を囲むような配置状態となっている。Further, four supporting portions 26, 26, ... Are projectingly provided on the upper portion of the lattice 25 of the basket member 2b, and these supporting portions 26 are blown off and connected to the four corners of the upper end of the weight block 1. There is. And, the same four artificial algae 3 ... as in the first embodiment are fixed to the supporting portions 26, 26 ... In a suspended state, respectively. The arrangement state is such that the cage member 2b is surrounded by ....
【0017】 最後に、図5に示すように、第1または第2実施形態人工魚礁における吹放ち 重量ブロック1の各側面の開口部11・11・・・・に網目状人工植毛体4・4・・・・を固 定するといった変形例も可能である。図5は、第1または第2実施形態の藻付着 部材2および人工藻3・3・・・・を省略して示してある。前記網目状人工植毛体4 は、網体の表面に合成繊維毛を植設したものから成る。これにより、藻付着部材 2に付着した天然藻や人工藻3に産み付けることができないような非常に微小な 卵でも、網目状人工植毛体4に産み付けることができ、本実施形態人工魚礁にお いて産卵場としての利用価値が一層高まる。それに加えて、海流や波浪の激しい 浅瀬に人工魚礁を沈設した場合であっても、前記人工植毛体4によって吹放ち重 量ブロック1の外部からの流れが効果的に弱められて重量ブロック1の内部に良 好なよどみを生成することができる。また、図5では網目状人工植毛体4が重量 ブロック1側面の開口部11の外側に固定してあるけれども、その開口部11の内側 に網目状人工植毛体4を固定してもよく、さらに網目状人工植毛体4を開口部11 の外側と内側の双方に固定して、産卵面積を一層増大させたり流れの低減効果を 一層高めることも可能である。Finally, as shown in FIG. 5, the net-like artificial hair transplant bodies 4 and 4 are formed in the openings 11 on each side of the blowout weight block 1 of the artificial fish reef according to the first or second embodiment. It is also possible to make modifications such as fixing .... In FIG. 5, the algae-attaching member 2 and the artificial algae 3 ... of the first or second embodiment are omitted. The mesh artificial flocked body 4 is composed of a mesh body with synthetic fiber bristles planted on the surface thereof. As a result, even a very small egg that cannot be laid on the natural algae attached to the algae attachment member 2 or the artificial algae 3 can be laid on the reticulated artificial hair transplant body 4, and in the artificial fish reef of the present embodiment. The utility value as a spawning ground is further enhanced. In addition to that, even when an artificial fish reef is sunk in a shallow sea where the ocean current or waves are severe, the artificial flocking body 4 effectively weakens the flow from the outside of the weight block 1 and blows the weight block 1 from the outside. A good stagnation can be generated inside. Further, in FIG. 5, the reticulated artificial hair transplant 4 is fixed to the outside of the opening 11 on the side surface of the weight block 1, but the reticulated artificial hair transplant 4 may be fixed to the inside of the opening 11. It is also possible to fix the reticulated artificial hair transplant body 4 both outside and inside the opening 11 to further increase the spawning area and further enhance the flow reduction effect.
【0018】 上記の如き吹放ち重量ブロック1、藻付着部材2および人工藻3・3・・・・にて 構成された本実施形態人工魚礁により、吹放ち重量ブロック1の中央部近傍に固 定された藻付着部材2の凹凸部に引っ掛かって付着した海中の天然藻の機能(即 ち、海中の窒素、リン、ケイ素等の栄養塩類を元に炭酸ガスを摂取して行う光合 成により得られる環境浄化作用、および魚介類の餌等)と、この天然藻を囲むよ うに配置された人工藻3・3・・・・の機能(即ち、茂みおよび産卵場の形成等)と を同時に実現することができ、更にこれら双方の機能が相乗効果を奏して魚介類 にとって理想的な環境が提供されることになる。By the artificial fish reef of the present embodiment composed of the blowout weight block 1, the algae attaching member 2 and the artificial algae 3 ... The function of natural algae in the sea that is caught and attached to the irregularities of the algae attachment member 2 (immediately obtained by photosynthesis by ingesting carbon dioxide based on nutrients such as nitrogen, phosphorus and silicon in the sea) Simultaneously realizes the environmental purification action and the food of seafood, etc., and the function of artificial algae 3, 3 ... Surrounding this natural algae (that is, formation of bushes and spawning grounds). In addition, the functions of both of them function synergistically to provide an ideal environment for seafood.
【0019】 本考案の実施形態は概ね上記のとおりであるが、本考案は前述の実施形態に限 定されるものでは決してなく、「実用新案登録請求の範囲」の記載内において種 々の変更が可能であって、例えば、本実施形態の藻付着部材2においては、プレ ート状や籠状に形成してあるけれども、海中の天然藻が付着し易い形状であれば 何れの形状でもよく、ウニの如き棘を外面に有する球体等の種々の形状に形成す ることも可能であり、このような変更態様も本考案の技術的範囲に属することは 言うまでもない。The embodiment of the present invention is generally as described above, but the present invention is by no means limited to the above-mentioned embodiment, and various modifications are made within the scope of the “claim for utility model registration”. For example, although the algae-adhering member 2 of the present embodiment is formed into a plate shape or a cage shape, any shape may be used as long as natural algae in the sea is easily attached. It is also possible to form various shapes such as a sphere having a spine such as a sea urchin on the outer surface, and it goes without saying that such a modified mode also belongs to the technical scope of the present invention.
【0020】[0020]
以上実施形態を挙げて説明したとおり、本考案にあっては、人工魚礁本体を構 成する重量ブロックの中央部近傍に凹凸状の藻付着部材を固定してあるので、海 中の天然藻がその藻付着部材の凹凸部に引っ掛かって付着し易くなっており、従 来の人工魚礁に比して天然藻の付着率を増大させることができる。よって、多く の天然藻が付着した人工魚礁は魚介類の絶好の餌場になるとともに、その天然藻 が海中の窒素、リン、ケイ素等の栄養塩類を元に炭酸ガスを摂取して光合成を行 うことにより、海洋における環境浄化作用も同時に得られる。 As described above with reference to the embodiments, in the present invention, since the uneven algae-adhering member is fixed near the center of the weight block that constitutes the artificial fish reef body, natural algae in the sea The algae-attaching member is easily caught by the irregular portions of the algae-attaching member, and the attachment rate of natural algae can be increased as compared with the conventional artificial fish reef. Therefore, the artificial fish reef to which many natural algae adhered becomes a perfect feeding ground for seafood, and the natural algae ingests carbon dioxide based on nutrient salts such as nitrogen, phosphorus, and silicon in the sea to perform photosynthesis. By doing so, an environmental purification action in the ocean can be obtained at the same time.
【0021】 また、本考案にあっては、人工魚礁の中央部近傍に付着した天然藻を囲むよう に人工藻を配置してあるので、その人工藻によって人工魚礁の中央部近傍に魚介 類の生存本能を安息させ得る適度な茂みを形成することができるとともに、人工 藻自体は魚介類の産卵場となる。よって、上記の天然藻および人工藻による相乗 効果を奏して、魚介類にとって理想的な環境の人工魚礁を得ることができる。Further, in the present invention, since the artificial algae are arranged so as to surround the natural algae attached to the vicinity of the central portion of the artificial fish reef, the artificial algae causes the artificial algae to be generated near the central portion of the artificial fish reef. The artificial algae itself can serve as a spawning ground for seafood, as well as being able to form a suitable bush that can rest the survival instinct. Therefore, an artificial fish reef with an ideal environment for fish and shellfish can be obtained by producing the synergistic effect of the above natural algae and artificial algae.
【図1】本考案の第1実施形態である人工魚礁の斜視図
である。FIG. 1 is a perspective view of an artificial fish reef according to a first embodiment of the present invention.
【図2】第1実施形態人工魚礁の側面説明図である。FIG. 2 is a side view illustrating the artificial fish reef according to the first embodiment.
【図3】本考案の第2実施形態である人工魚礁の斜視図
である。FIG. 3 is a perspective view of an artificial fish reef according to a second embodiment of the present invention.
【図4】第2実施形態人工魚礁の側面説明図である。FIG. 4 is a side view illustrating an artificial fish reef according to a second embodiment.
【図5】第1または第2実施形態人工魚礁の側面の開口
部に網目状人工植毛体を固定した変形例で、内部の藻付
着部材および人工藻を省略して示した人工魚礁の斜視図
である。FIG. 5 is a perspective view of an artificial fish reef in which a net-like artificial hair transplanter is fixed to an opening on a side surface of the artificial fish reef according to the first or second embodiment, and the algae-adhering member and the artificial algae inside are omitted. Is.
1 吹放ち重量ブロック 11 開口部 12 吊手具 2 藻付着部材 2a プレート部材 2b 籠部材 21 鋸歯状凹凸部 22 小通孔 23 大通孔 24 石状固体 25 格子 26 支持部 3 人工藻 31 基幹部 32 合成繊維毛 4 網目状人工植毛体 1 Blow-off weight block 11 Opening part 12 Lifting tool 2 Algae attachment member 2a Plate member 2b Basket member 21 Sawtooth-like irregularity part 22 Small through hole 23 Large through hole 24 Stone solid 25 Lattice 26 Support part 3 Artificial algae 31 Basic part 32 Synthetic fiber hair 4 Reticulated artificial hair transplant
Claims (6)
有する吹放ち重量ブロックと;この吹放ち重量ブロック
の中央部近傍に固定され、かつ、水中の天然藻が付着し
易い凹凸部を有する藻付着部材とを包含して構成された
ことを特徴とする藻が付着し易い人工魚礁。1. A blow-off weight block which is placed on the seabed and has an opening on its peripheral surface; an uneven portion fixed near the center of this blow-off weight block and to which natural algae in water easily adheres. An artificial fish reef to which algae easily attaches, which is characterized in that it is configured to include an algae attachment member having a.
有する吹放ち重量ブロックと;この吹放ち重量ブロック
の中央部近傍に固定される部材であって、水中の天然藻
が付着し易い凹凸部を有し、かつ、通孔が形成された藻
付着部材とを包含して構成されたことを特徴とする藻が
付着し易い人工魚礁。2. A blow-off weight block that is placed on the seabed and has an opening on its peripheral surface; a member fixed near the center of this blow-off weight block, to which natural algae in water adheres. An artificial fish reef to which algae easily attaches, which is characterized by having an algae attachment member having an easily formed uneven portion and having a through hole formed therein.
有する吹放ち重量ブロックと;この吹放ち重量ブロック
の中央部近傍に固定される部材であって、水中の天然藻
が付着し易い凹凸部を有し、かつ、通孔が形成された藻
付着部材と;この藻付着部材に付着する天然藻を囲むよ
うに配置された人工藻とを包含して構成されたことを特
徴とする藻が付着し易い人工魚礁。3. A blow-off weight block that is placed on the seabed and has an opening on its peripheral surface; a member fixed near the center of this blow-off weight block, to which natural algae in water adheres. And an artificial algae arranged so as to surround a natural alga attached to the alga-adhering member and an alga-attaching member having a through hole formed therein; Artificial fish reef that easily attaches algae.
有する吹放ち重量ブロックと;この吹放ち重量ブロック
の中央部近傍に固定されるプレート部材であって、水中
の天然藻が付着し易い鋸歯状の凹凸部を有し、かつ、こ
の鋸歯状凹凸部の凹部に小通孔およびプレート部材の略
中央部に大通孔が形成された藻付着部材と;この藻付着
部材に付着する天然藻を囲むように配置された人工藻と
を包含して構成されたことを特徴とする藻が付着し易い
人工魚礁。4. A blow-off weight block that is placed on the seabed and has an opening on its peripheral surface; and a plate member fixed near the center of this blow-off weight block, to which natural algae in water adheres. An algae-adhering member having a saw-toothed concavo-convex portion that is easy to perform, and a small through-hole formed in the concave portion of the saw-toothed concavo-convex portion and a large through-hole in the substantially central portion of the plate member; An artificial fish reef to which an algae is easily attached, which is characterized by including an artificial algae arranged so as to surround a natural algae.
有する吹放ち重量ブロックと;この吹放ち重量ブロック
の中央部近傍に固定される格子状の籠部材であって、水
中の天然藻が付着し易い凹凸部が籠部材の内部に入れた
石状固体にて形成され、かつ、籠部材の格子間の隙間に
て通孔が形成された藻付着部材と;この藻付着部材に付
着する天然藻を囲むように配置された人工藻とを包含し
て構成されたことを特徴とする藻が付着し易い人工魚
礁。5. A blow-out weight block that is placed on the seabed and has an opening on the peripheral surface; and a lattice-shaped basket member fixed near the center of the blow-off weight block, which is a natural material An algae-adhering member in which irregularities to which algae are likely to adhere are formed of a stone-like solid placed inside a cage member, and through holes are formed in the gaps between the lattices of the cage member; An artificial fish reef to which an algae is easily attached, characterized by being configured to include an artificial algae arranged to surround the attached natural algae.
有する吹放ち重量ブロックと;この吹放ち重量ブロック
の中央部近傍に固定される部材であって、水中の天然藻
が付着し易い凹凸部を有し、かつ、通孔が形成された藻
付着部材と;この藻付着部材に付着する天然藻を囲むよ
うに配置された人工藻と;前記吹放ち重量ブロックの周
面の開口部に固定された網目状人工植毛体とを包含して
構成されたことを特徴とする藻が付着し易い人工魚礁。6. A blow-off weight block that is placed on the seabed and has an opening on its peripheral surface; a member fixed near the center of this blow-off weight block, to which natural algae in water adheres. An algae-adhering member having an easy uneven portion and having a through hole; an artificial algae arranged so as to surround a natural algae adhering to the algae-attaching member; an opening on the peripheral surface of the blow-off weight block An artificial fish reef to which algae easily adheres, which is characterized in that the artificial fish reef is fixed to a portion of the reticulated artificial flocked body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP1997004725U JP3044065U (en) | 1997-06-05 | 1997-06-05 | Artificial fish reef to which algae easily attaches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP1997004725U JP3044065U (en) | 1997-06-05 | 1997-06-05 | Artificial fish reef to which algae easily attaches |
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Publication Number | Publication Date |
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JP3044065U true JP3044065U (en) | 1997-12-12 |
Family
ID=43178504
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JP1997004725U Expired - Lifetime JP3044065U (en) | 1997-06-05 | 1997-06-05 | Artificial fish reef to which algae easily attaches |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005036952A1 (en) * | 2003-10-20 | 2005-04-28 | Ein Co., Ltd. Technical Center | Seaweed bed, and culture medium for fish bank or coral reef |
JP2011142856A (en) * | 2010-01-14 | 2011-07-28 | Kowa Kk | Fish bank block, method for producing the same, and pyramid-shaped fish bank |
-
1997
- 1997-06-05 JP JP1997004725U patent/JP3044065U/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005036952A1 (en) * | 2003-10-20 | 2005-04-28 | Ein Co., Ltd. Technical Center | Seaweed bed, and culture medium for fish bank or coral reef |
JP2011142856A (en) * | 2010-01-14 | 2011-07-28 | Kowa Kk | Fish bank block, method for producing the same, and pyramid-shaped fish bank |
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