• 제목/요약/키워드: artificial reef development

검색결과 33건 처리시간 0.019초

태국의 인공어초 현황과 전망 (Present Status and Prospect of Artificial Reef in Thailand)

  • 김동선
    • 해양환경안전학회:학술대회논문집
    • /
    • 해양환경안전학회 2008년도 춘계학술발표회
    • /
    • pp.153-158
    • /
    • 2008
  • Artificial reef in Thailand was trend to deploy and development artificial reef program to enhancing fisheries product and also use artificial reef for solve coastal problem. Artificial reef in Thailand was present in type of shallow water artificial reef by use concrete dice as dominant structure. To development artificial reef program for more benefit such as deep water artificial reef program that might provide more fisheries product for commercial fisheries and apply for use in many purposes especially for manage coastal environment in Thailand can be suggestion by cases of study. But all of that have to use more knowledge and concerning from government and organization that was responds in artificial reef program to decide the future of artificial reef program in Thailand.

  • PDF

한국거문도 연안에 시설된 세라믹 어초 인접 어장에서의 어획량과 어획종 변동 (Variations of Catch and Fish Species in the Adjacent Fishing Ground of Ceramic Artificial Reefs Constructed on the Coastal Area of Geomun-do, Korea)

  • 박성욱;김대권;이정우;안희춘
    • 수산해양기술연구
    • /
    • 제40권4호
    • /
    • pp.295-303
    • /
    • 2004
  • 한국 거문도 연안에서 시설된 세라믹 어초의 시설 효과를 구명하기 위하여 2001년부터 2003년까지 어초 시설구, 자연초구 및 비시설구 어장에서 삼중자망에 의한 어획량과 어획종을 조사하였다. 어초 시설구에서의 폭당 어획량은 1,621.9g으로 자연초구와 비시설구에 비해 각각 67.9%, 333.3%많았는데, 이를 Tukey test로 검정한 결과, 어초 시설구와 자연초구에서는 유의차가 없었으며, 어초 시설구와 비시설구와는 유의차가 인정되었다.(p<0.05). 어초 시설구에서 어획된 월 평균 종수는 7.2종으로 자연초구에 비해 7.1% 적었던 반면 비시설구보다 97% 많았는데, ANOVA 분석결과 유의차가 없었다. 어초 시설구의 어획률은 11월에 최대, 5월에 최소치를 보였으며, 이러한 현상은 자연초구, 비시설구에서도 나타났다. 어초 시설구의 우점종은 참동, 말쥐치, 쥐치, 도다리, 거북복 등 암초성이 강한 저서어종이었고, 자연구와 비시설구에서는 저서성 및 회유성 어종이 혼재하였다.

복합형 인공어초의 개발 및 구조 성능 평가 (Development of hybrid artificial reef and basic structural performance tests)

  • 고훈범;김희동
    • 한국산학기술학회논문지
    • /
    • 제19권9호
    • /
    • pp.341-347
    • /
    • 2018
  • 본 연구의 목적은 기존의 콘크리트형 및 강재형 인공어초가 가지고 있는 제작, 설치 및 운용상의 문제점을 해결할 수 있는 새로운 형태의 복합형 인공어초를 개발하고 이에 대한 기본적인 구조 성능을 정적가력 실험을 통하여 평가하는데 있다. 이를 위해 기존에 콘크리트형 및 강재형 인공어초의 장단점을 문헌적으로 평가하고 두 인공어초가 가지고 있는 장점은 최대한 유지하면서 각 인공어초의 문제점을 효율적으로 극복할 수 있는 새로운 형태의 복합형 인공어초를 개발하여 대안으로 제안하였다. 또한 제안된 복합형 인공어초의 제작, 설치시 장점을 현실적으로 평가하기 위해 단위 모듈에 대한 제작 및 설치를 수행하여 제안된 복합형 인공어초의 현장 설치 용이성 및 목표한 장점의 확보 가능성을 확인하였다. 또한 제작, 설치된 단위 모듈을 대상으로 인공어초의 기본적인 구조 성능 평가를 위하여 정적가력실험을 실시하였다. 이상의 연구를 통하여 개발된 복합형 인공어초가 제작, 조립의 용이성을 확보하면서 적절한 구조적 성능이 발현됨을 확인하였다.

인공어초용 기능성 포러스 콘크리트 개발에 관한 실험적 연구 (An Experimental Study on the Development of Functional Porous Concrete for Artificial Reef)

  • 최성하;김명유;양은익
    • 한국콘크리트학회:학술대회논문집
    • /
    • 한국콘크리트학회 2006년도 추계 학술발표회 논문집
    • /
    • pp.869-872
    • /
    • 2006
  • By this time, various shapes and materials are used in Artificial Reef. A function of Artificial Reef is leading of fishes by adhesion of seaweeds, however, this effect was not enough. In this study, porous concrete containing function materials (protein, carbohydrates, and fat etc.) are investigated to maximize leading effect of fishes. For these, the mechanical characteristics of porous concrete are investigated with void contents and function materials. Also, the diffusion of function materials are compared to suggest the suitable content of functional material.

  • PDF

방류재포 방법에 의한 소라의 성장 특성 (Growth of Batillus cornutus by Capture-Recapture Method)

  • 차병열;김대현;김병엽
    • 한국패류학회지
    • /
    • 제23권2호
    • /
    • pp.227-233
    • /
    • 2007
  • The amount of Batillus cornutus captured in Jeju Island was about 2,000 tons/year for three years after 2000. The mean size of B. cornutus by shell height was 7.7 cm in 2001, 7.9 cm in 2002, and 8.1 cm in 2003. Local mean size of B. cornutus by shell height was 8.7 cm in eastern waters, 7.4 cm in western waters, 7.8 cm in southern waters, and 7.7 cm in northern waters of Jeju Island. To investigate the effect of the growth pattern, an experiment was conducted: the samples were tagged and released in southern coastal waters of Jeju Island on 2nd April (a release test) and 29th October (a recapture test) in 2003. The release stations were two sites, natural reef and artificial reef, where their environmental conditions were different from each other. In April, the size of B. cornutus released in the natural reef was 6.2 cm in mean shell height, and 58.9 g in mean shell weight. The size of B. cornutus released in the artificial reef was 6.6 cm in mean shell height, and 65.9 g in mean shell weight. During the release period, most of B. cornutus were not moved much (less than 10 m) from the original release sites. When B. cornutus was recaptured in October after 7 months, the size of B. cornutus released in the natural reef became 7.4 cm in mean shell height, and 89.4 g in mean shell weight. The size of B. cornutus released in the artificial reef became 7.2 cm in mean shell height, and 84.9 g in mean shell weight. This indicates that the growth rate of B. cornutus released in the natural reef was higher than that of B. cornutus in the artificial reef. These differences in the growth of B. cornutus between study sites were ascribed to the abundance of marine algae grazed by immobile B. cornutus. Namely, with relatively high growth rate of B. cornutus in the natural reef, the number of species (23 species) and biomass (26,703.4 g) of algae were more diverse and abundant than those (7 species and 17,018.4 g) of algae in the artificial reef. The growth of B. cornutus in the natural reef was also correlated to high water temperature $(15.5-25.9^{\circ}C)$.

  • PDF

다공질 인공어초 (반톱니형)에서 진행된 해조천이 및 해중림 조성 (Restoration of the Seaweed Forest and Algal Succession on a Porous Type (Shaped Half Saw Teeth) Artificial Reef)

  • 조성환;최창근;좌종헌
    • 한국수산과학회지
    • /
    • 제40권4호
    • /
    • pp.220-225
    • /
    • 2007
  • The succession of marine benthic algae and the restoration of an artificial seaweed forest on a porous type (shaped half saw teeth) artificial reef at Jeju island, Korea was studied. Young thalli of Sargassum horneri and Ecklonia cava were attached to different artificial substrates. In general, the succession on the artificial reefs led from filamentous algae to perennial algae and involved more than 25 species that are useful fishery resources, including E. cava. Coralline algae were dominant on the artificial reefs at the Kangjung site. The maximum algal biomass on the artificial reef in October 2005 was $1,990g/m^2$ at Biyang. In conclusion, a climax community and seaweed forest can be attained one year after the substrate is constructed.

강제어초의 효율성에 관한 현장조사 (Field Investigation on the Efficiency of the Artificial Steel Reefs)

  • 서성호;이영권;이익효;김대권
    • 한국해양공학회지
    • /
    • 제21권5호
    • /
    • pp.61-67
    • /
    • 2007
  • As part of the government's fishery resource creation policy, fishing ground creation projects have been undertaken in Korea's major seashore fishing spots since the 1970s, where artificial reefs constructed using new materials that make up for the weakness of concrete reefs have been used. In this study, the stability of these artificial reefs when acted upon by external forces, their ability to attract and gather fish, and their economic feasibility were examined. For this purpose, an experimental artificial steel reef was constructed and was installed in an area of the sea. Then the corrosion of the experimental material attached to it was investigated. The efficiency of the artificial steel reef was then verified by examining its functionality, removal, and burying, as well as the speed of insertion of living things into its structure and its ability to attract and gather fish.

음향조사기법을 이용한 수산자원 관리수면의 어류분포 및 인공어초지역의 어군위집조사 (Hydro-acoustic survey on fish distribution and aggregated fish at artificial reefs in marine ranching area)

  • 김현영;황보규;이유원;신현옥;권정노;이경훈
    • 수산해양기술연구
    • /
    • 제47권2호
    • /
    • pp.139-145
    • /
    • 2011
  • Hydro-acoustic survey was carried out to estimate a fish distribution at marine ranching area and aggregated fish schools at artificial reef area in Oeyeondo, Korea. The survey system was set up with DGPS system, scientific echo sounder (EK60, Simrad Co.), and ECDIS (Mecys. Co. LTD). A track survey and a random survey was respectively applied to the marine ranching area (474.4ha) and to the artificial reef area (within a radius of 300m). As the result, fish distribution and MVBS values in marine ranching area showed that created fisheries resources didn't come to be abundant yet as to appear fish distribution in all of the area. In the artificial reef area, it was, however, able to detect many fish school signals on the top of and around artificial reefs and to confirm the luring effect of artificial reefs.

Development of Benthic Community on an Artificial Reef Complex, Jeju Island, Korea

  • Yi, Soon-Kil;Huh, Hyung-Tack;Je, Jong-Geel;Kim, Dae-Gwen
    • Ocean and Polar Research
    • /
    • 제23권3호
    • /
    • pp.255-264
    • /
    • 2001
  • Development process of benthic community on experimental substrata attached on a newly installed artificial reef complex in Jeju Island was observed for 27 months from 1992 to 1994. Among 34 species of algae and 64 species of zoobenthos obtained from the study, Ecklonia cava dominated with a maximum biomass of about $10kg/m^2$. It was able to smother the other animals, however it provided a new substrate for the new settlers. Opportunistic bryzoans such as Likenopora radiata and Dexiospira spirillum occurred during the early stage were substituted by poriferans, banacles and other bryzoans. Young barnacles were smothered by bryozoans, on the contrary, bryozoans were bulldozed by adult barnacles. No apparent differences have been observed between vertically and horizontally installed substrates in terms of species composition and biomass during the early stage of succession. Thereafter owing to the rapid growth of E. cava, the horizontal substrata carried on a higher biomass while the vertical showed a higher coverage. The benthic process on the experimental substrata can be classified into three stages: initial stage, build up stage and regulatory stage. Important mechanisms involved were canopying of E. cava, suffocation by bryozoans and poriferans, and bulldozing of adult barnacles.

  • PDF

인공어초어장의 어류 군집상과 어획량 변동 (Variations of Fish Community and Fish Density on Artificial Reefs)

  • 이정우;강영실
    • 한국수산과학회지
    • /
    • 제27권5호
    • /
    • pp.535-548
    • /
    • 1994
  • 각 해역에 시설된 사각형, 반구형, 원통형 인공어초어장의 어류 군집상 및 어획량 변동을 조사하여 인공어초 모형에 대한 어종 친화성과 해역별 최대효과를 가져 올 수 있는 적정 어초모형에 대해 논의하였다. 1988년 5, 7, 9, 11월에 각 1회씩 삼중자망으로 어획조사를 실시하였으며, 어획된 어류는 종별로 분류하여 계수하였다. 인공어초어장에서 출현한 총 어종수는 45종이며 볼락류, 쥐노래미, 가자미류, 쥐치 및 말쥐치의 출현빈도가 높았다. 사각형 인공어초어장에서는 총 38종이, 원통형 인공어초어장에서는 총 31종이, 그리고 반구형 인공어초어장에서는 총 18종이 출현하였다. 해역별 주요 우점종은 대부분이 가자미류, 가오리류, 쥐치, 말쥐치, 쥐노래미, 볼락류와 같은 연안정착성 혹은 저서성, 암초성어류였으며 남해 외양만이 회유성 어종인 고등어가 최우점종이었다. 인공어초모형에 따라 저서성, 암초성, 회유성 어류의 조성률이 다르게 나타났다. 사각형 인공어초어장에서는 회유성어류의 조성률이 높은 반면 반구형 인공어초어장에서는 저서성 어류 및 부착생물을 주로 먹이로 하는 어류의 조성률이 높았다. 동해 중부연안을 제외한 전 해역의 인공어초어장중 사각형 인공어초어장에서 어획량이 가장 높았으며, 동해 중부연안은 원통형 인공어초어장에서 어획량이 가장 높았다. 인공어초모형별 어류 군집상은 사각형 인공어초어장과 반구형 인공어초어장은 서로 차이가 있으며, 원통형 인공어초어장은 이 두 인공어초어장의 중간적인 성격을 띤 군집상을 나타내었다. 또한 해역별로 보면 남해연안과 서해 남${\cdot}$중부연안의 군집상이 유사했고, 남해외양과 동해 남${\cdot}$중부연안의 군집상이 유사하였다./TEX>인 점을 고려하여 볼 때 수은 오염에 주의할 필요가 있음을 알 수 있었다. 6. 카드뮴의 어종별 96hr-LC50은 넙치 28.4mg/l, 숭어 2.55mg/l, 조피볼락 28.7mg/l으로 나타났다. 7. LAS의 96hr-LC50은 0.79mg/l이었고, 숭어에 대한 96hr-LC50은 0.06mg/l, 조피볼락 1.08mg/l으로 기수성 어류인 숭어의 내성이 매우 낮은 점이 특이하였다.치사하지 않으므로, 본 실험의 결과를 기초로 하여서 무수 수송 장치를 만들면 충분히 실용화가 가능할 것으로 생각된다.X>로 상당히 높게 나타났고, EPA, DHA 등 w3 계의 장쇄(長鎖)고도불포화지방산의 조성비가 $22.13\%$로 높게 나타났으며, 양적으로 많은 지방산은 포화산 중에는 palmitic acid($C_{16:0}$), monoene산 중에서는 palmitoleic acid($C_{16:1}$), polyene산 중에서는 hexadecatetraenoic acid($C_{16:4}$), eicosapentaenoic acid ($C_{20:5}$), docosahexaenoic acid($C_{22:6}$) 등이 함량이 많았다. Carotenoprotein으로부터 분리한 총 caroteoid 함량은 $8.80mg\%$였고, 주 carotenoid는 mytiloxanthin($74.79\%$), 3,4,3'-trihydroxy-7',8'-didehydro-${\beta}$-carotene($18.26\%$)였다

  • PDF