@article{oai:ir.kagoshima-u.ac.jp:00010766,
 author = {肥後, 伸夫 and 長島, 美知男},
 issue = {1},
 journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University},
 month = {2016-10-31},
 note = {On the three kinds of artificial reefs (stone reef, concrete block reef, sunken
boat reef) submerged into the sea-bottom around the Satsuma Peninsula in Kagoshima
Pretecture diving observations were carried out.
Concerning the respective reef, the results obtained were as in the following：
1) About the gathering effect of the stone reef it was ascertained that the effect from the height of the reef was quite negligible, and in promoting the effect what
mattered was the following three items, namely; the unevenness of the stone surface perforations upon the stone surface, cracks and fissures of the stones.
2) In case of the concrete block reef, when the reefs were submerged in a scattered condition, the gathering effect was noted to be quite negligible; but when they were submerged in a from of gathering consisting of from 3 to 5 individuals,
the effect was noted to be eminent; especially big effect was noted in the case in which the distance between the gatherings was set within the width of effect-space,
namely, when the distance between the gathered concrete blocks was kept within the width counting more or less than 2 m.
3) In case of the sunken boat reef, the highest gathering effect, especially about
the large and middle siged fish, was noted in the hold of the sunken boat which was made open at the upper port and left lidless.
And the effect was promoted further more when the sunken boat was supplied with stanchions on the side-wall, or when some unevenness was supplied on the side-wall itself vertically.
4) Concerning the width of the effective space, in case of the bottom fish, it was noted to be 0.5~2 m in height and 0.5~3 m in width, but when there was a flowing
tide, it was made widened at the upper part of the tide, and at night it was the height that was enlarged.
5) Concerning the kind of the fish related most intimately with the gathering
effect of the artificial reefs.
We may mention the name of the sea urchin (Diadema Setosum) in case of the
attaching organism, and the name of the cardinal fish (Apogon Semilimeatus) in case of the small siged fish., 鹿児島湾口,薩摩半島周辺に設置してある割石,並型コンクリートブロック,沈船の各魚礁について潜水観察を行なった結果,次のような知見を得た。
1) 割石魚礁の蝟集効果は,魚礁の高さは差程問題とならず,むしろ凹凸,穴場,亀裂のあるものが効果が高い。
2) 並型コンクリートブロック魚礁では,単体のみでは蝟集効果は極めて低いが,3~5個以上の群体ではその効果は高まり,特に群体間の間隔が有効空間の幅である2m程度ある場合は特に顕著である。
3) 沈船魚礁では上部がオープンになった蓋なし船倉に大・中型魚の蝟集効果が高く,側壁上のスタンション,垂直方向に凹凸を有する側壁を有する場合はその効果は更に高まる。
4) 有効空間の広さは底魚の場合,高さが0.5~2m,幅が0.5~3mで潮流のある場合は潮上に幅が広くなり,夜間では高さが高くなる。
5) 大・中型魚の蝟集効果に最も関係のあるものとして,付着生物では,ガンガゼ,小型魚ではネンブツダイをあげることが出来る。},
 pages = {117--130},
 title = {潜水観察による人工魚礁の実態について II : 鹿児島県薩摩半島周辺海域の場合},
 volume = {27},
 year = {}
}