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연안자망 부이에 어구자동식별 장치 설치방안에 관한 기초적 연구
허남희,강경범,구명성,김근형,김종범,좌민석,김준택,정주명,김병엽,김석종 한국수산해양기술학회 2019 수산해양기술연구 Vol.55 No.4
As a series of fundamental researches on the development of an automatic identification monitoring system for fishing gear. Firstly, the study on the installation method of automated identification buoy for the coastal improvement net fishing net with many loss problems on the west coast was carried out. Secondly, the study was conducted find out how to install an automatic identification buoy for coastal gill net which has the highest loss rate among the fisheries. GPS for fishing was used six times in the coastal waters around Seogwipo city in Jeju Island to determine the developmental status and underwater behavior to conduct a field survey. Next, a questionnaire was administered in parallel on the type of loss and the quantity and location of fishing gear to be developed and the water transmitter. In the field experiment, the data collection was possible from a minimum of 13 hours, ten minutes to a maximum of 20 hours and ten minutes using GPS, identifying the development status and underwater behavior of the coastal gillnet fishing gear. The result of the survey showed that the loss of coastal net fishing gear was in the following order: net (27.3%), full fishing gear (24.2%), buoys, and anchors (18.2%). The causes were active algae (50.0%), fish catches (33.3%) and natural disasters (12.5%). To solve this problem, the installation method is to attach one and two electronic buoys to top of each end of the fishing gear, and one underwater transmitter at both ends of the float line connected to the anchor. By identifying and managing abnormal conditions such as damage or loss of fishing gear due to external factors such as potent algae and cutting of fishing gear, loss of fishing gear can be reduced. If the lost fishing gear is found, it will be efficiently collected. 이 연구는 어구자동식별 모니터링 시스템 개발에 관한 일련의 기초적인 연구로써, 1차적으로 서해안에서 유실문제가 많은 연안개량안강망 어구에 대한 어구자동식별 부이의 설치방안에 관한 연구를 수행하였고, 2차적으로 연안어업 중에서 유실률이 가장 높은 연안고정자망 어구를 대상으로 어구자동식별 부이의 설치방안을 강구하기 위하여 제주도 서귀포시 주변 연안 해역을 중심으로 6차례 조업용 어구에 GPS를 이용하여 부설전개상태와 수중의 거동을 파악하기 위한 현장실험을 실시하였고, 다음으로 어구의 유실형태 및 개발될 부이와 수중발신기의 수량 및 부착위치에 대하여 설문조사를 병행하여 조사하였다. 현장실험에서는 GPS를 이용한 데이터 수집을 최저13시간 10분에서 최대 20시간 10분까지 가능하였고 기초적인 연안고정자망 어구의 부설전개상태의 수중거동을 파악 할 수 있었다. 설문조사의 결과에서는 연안자망 어구의 유실은 망지(27.3%), 어구전체(24.2%) 및 부표(부이),닻(멍)(18.2%)순으로 유실된다고 나타났는데, 그 원인은 강한 조류(50.0%),어구절단(33,3%) 및 자연재해(12.5%) 순으로 응답했다. 이를 해결하기 위하여 어구자동식별 장치의 설치방안은 전자부이를 연안자망 어구의 양 끝단의 부표상부에 각각 1개씩 총 2개를 부착하고, 수중발신기는 닻과 연결된 뜸줄부 끝단에 각각 1개씩 총 2개를 부착함으로써, 강한 조류와 어구의 절단 등 외부적인 요인으로 인한 어구의 파손이나 유실 등의 이상상태를 실시간으로 확인하고 관리할 수 있게 함으로써 어구의 유실을 줄일 수 있고 유실어구가 발생할 경우에는 효율적으로 수거될 것으로 판단된다.
제주도 오분자기의 서식 해양 환경과 서식공간에 대한 부착 선호도에 관한 연구
허남희,김근형,강경범,김석종 한국수산해양기술학회(구 한국어업기술학회) 2022 수산해양기술연구 Vol.58 No.2
As a series of basic research to draw the pilot design measures for developing the habitat apparatus of Sulculus diversicolor supertexta inhabiting the coastal area of Jeju island, this study conducted a water tank experiment to understand the habitat marine environment of Sulculus diversicolor supertexta and the preference of habitat space focusing on the research fisheries performing the discharge of marine products. In the composition degree of marine algae in both fisheries, Donggwi-ri showed the highest gulfweed (79.3%) as brown algae and there were some coralline algae (17.2%) as red algae. Hansu-ri yielded the highest gulfweed (48.1%) as brown algae, which was followed by sea lettuce (10.4%) as green algae. In the preference of habitat space, the shelter angles 40° showed the highest adhesion as number of 82.9, which was followed by 60° and 70° as 69.2 and 68.2 respectively (P<0.05) by reviewing the environmental characteristics of habit of Salculus diversicolor supertexta in the coastal fishery of Jeju Island, when considering the adhesion rate in each of five shelters with different angles. In the future, there should be continuous research and monitoring for designing the fish shelters suitable for the coastal fisheries of Jeju island, and it would be also necessary to add the field-centered sustainable concrete research.