• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.83-84
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• 2001

최근 어장환경의 변화와 과다한 어획으로 연근해의 수산자원은 주요 어획종의 어획량이 감소하고 있는 추세를 보이고 있다. 이로 인하여 연근해 수산생물자원의 주요 먹이생물 이었던 새우류의 자원이 증가하고 있다. 이와 같은 새우류 자원증가는 남해안 어민들로 부터 이동성 구획어업인 새우조망어업 허가 신청이 급증하고 있으나, 아직 새우조망어업에 대한 연구는 전무한 실정으로 본 어업에 대한 전반적인 연구가 요구된다. (중략)

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.148-150
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• 2021

어촌은 바다, 섬, 자연경관, 해양레저, 수산자원 등의 다양한 해양 관광자원을 보유하고 있어 성장 잠재력이 풍부하나, 이를 통해 성장할 수 있는 기본적 인프라 및 콘텐츠가 절대적으로 부족한 실정이다. 또한 수산업 침체와 어촌인구 감소 및 고령화로 어촌 공동화 현상이 심화되고 있으며, 정주환경 저하 등 삶의 질 전반에 걸쳐 낙후된 상태이다. 본 연구에서는 어촌마을의 자원활용과 자원 간의 연계를 촉진시킴과 동시에 정주기능, 생산기능의 활성화를 도모할 수 있는 소득증대 방안을 마련하고자 함

• Journal of Fisheries and Marine Sciences Education
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• v.26 no.6
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• pp.1322-1331
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• 2014

대부분 선진국 수산업은 국가경제에 차지하는 비중은 미미하나 해양생태 보전이나 해양식량안정 등의 중요성을 고려하여 국가개발 전략적 관점에서 큰 관심을 둔다. 그리고 인구나 식량소비 규모에 비해 수산자원이 풍부한 저개발국의 수산업은 국가경제 발전의 주요한 산업적 역할을 수행한다. 최근 한국을 포함한 일부 선진국에서는 창조경제적 수산업을 통하여 새로운 성장동력을 개발하여 수산업의 산업적 역할을 보다 산업화하는 전략적 발전을 지속적으로 추진하고 있다. 수산업의 창조경제적 발전은 주로 수산자원의 합리적 보존관리, 어업인의 소득증대와 어촌사회 복지향상뿐만 아니라 새로운 수산물 시장수요 창출 등에 주안점을 두고 있다. 본 연구에서는 수산창조지수(ICSF; Index of Creativity Space for Fisheries)를 분석하여 수산업의 지속적 개발 내지 회복에 있어 창조경제적 요인의 역할과 중요성을 평가하였다. 수산업의 창조성을 결정하는 수산창조지수(ICSF)는 기술(technology), 재능(talent), 다양성(tolerance)의 결합적 결과로 구성된다. 이를 통하여 창조경제적 측면에서 수산업의 지속적 발전 가능 잠재력을 평가하게 된다. 수산창조지수(ICSF)를 이용하여 한국 수산업이 지니는 창조성을 분석한 결과 대부분 수산분야에서 창조성을 기반으로 하는 지속적 수산업 발전 전략에 높은 관심을 보였다. 특히 한국 수산업은 보다 효과적인 자원 및 어업관리 정책의 이행을 통하여 창조경제적 편익의 증대를 모색하는 전략이 높이 평가되었다.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.10a
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• pp.51-54
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• 2003

인공어초 시설사업은 수산자원을 조성하고, 조성된 자원을 효율적으로 이용하는데 있다. 지금까지 어업인들은 어초의 구조적 특성과 어구 운용의 편리성 때문에 삼중자망으로 인공어초 어장에서 조업이 이루어지고 있다. 삼중자망어구는 미성숙어를 비롯한 다양한 어류가 어획되기 때문에 수산자원보호 측면에서 한국의 일부해역을 제외하고는 수산업법상 불법어구로 규정하고 있다. (중략)

• Korean Journal of Fisheries and Aquatic Sciences
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• v.54 no.1
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• pp.53-63
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• 2021

Age structure and growth of white croaker Pennahia argentata were estimated an analysis of otoliths. Fish specimens were collected from the Southern Sea of Korea from January to December 2018. A thin section method was used for age determination because otoliths of white croaker are oval in shape and large in size. Otoliths were cut vertically into 0.4-0.5 mm thick sections with an electric saw (Micracut 125). Monthly changes in the marginal index indicated that rings (opaque zone) were formed once a year in August. The estimated von Bertalanffy growth equation estimated by a non-linear regression were L∞=34.71 (1-e0.38(t+0.80)). In the present study, the oldest female was 8 years old and the male was 7 years old.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.55 no.2
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• pp.146-153
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• 2022

The vertical distribution and abundance of icthyoplankton in the southern waters of Jeju Island during June 2020 were investigated. Fish eggs and larvae were identified using the mitochondrial DNA cytochrome c oxidase subunit I (mtDNA COI) and the 16S rRNA gene. During this period, fish eggs of 23 taxa belonging to 21 families and larvae of 27 taxa belonging to 25 families were collected. Fish eggs were located mostly from the surface to 30 m depth of the water column. Larvae were located from the surface to 80 m depth of the water column. Vertical distributions of fish eggs and larvae were influenced by oceanography conditions such as temperature, salinity, and thermocline depth. No discernible difference in mean thermocline depth was observed between day and night.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.59 no.4
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• pp.315-327
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• 2023

In the last five decades, there has been a consistent decline in the total catch of fisheries in the Korean jurisdiction since the peak in 1986. The decline in catch slowed and slightly rebounded in the 2000s, but changed back to a decline in the 2010s. As indicators that can identify changes in the marine ecosystem, trophic level (TL), biodiversity index (H'), and the ratio between pelagic fish and demersal fish (P/D) were analyzed by each local marine ecosystem. There were some different changes in each local marine ecosystem, but the mean TL and H' decreased and P/D increased in general in Korean waters. Demersal fish, which were dominant in the 1970s and 1980s, declined, and small pelagic fish and cephalopods have dominantly changed since the 1990s. However, these changes are not simple, and they are fluctuating in complex ways relating to each marine ecosystem and the timing. It is believed that changes in marine ecosystems in Korean waters are likely caused by a combination of fisheries and climate change. The ecosystem indicators reflected a change in the total catch, a sharp drop in catch of demersal fish, and increasing catch of pelagic fish since the mid-1980s.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.55 no.2
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• pp.224-228
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• 2022

The feeding habits of the Pacific herring Clupea pallasii were examined based on 333 specimens collected from the coastal waters of the East Sea of Korea. Sampling was conducted in April, June, and September 2019 and February 2020. The total length of the C. pallasii ranged from 11.9 cm to 37.7 cm. Euphausiids (93.0%, index of relative importance, IRI), especially Euphausia, comprised the primary diet of the pacific herring, in addition to amphipods, copepods, and fishes. The dietary composition of C. pallasii showed non-significant differences by size. As body size of C. pallasii increased, the mean number of preys per stomach (mN/ST) and the mean weight of preys per stomach (mW/ST) tended to increase.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.57 no.2
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• pp.169-176
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• 2024

On November 9, 2022, a goatfish (Mullidae) that had not been previously reported in Korea was collected during offshore fisheries resources research near Jeju Island. Based on the morphological identification, this goatfish was identified as the genus Upeneus owing to the presence of palatine teeth and vomerine teeth, as well as the proximal part of anterior part of second dorsal fin. Additionally, through molecular identification, the previously unreported goatfish was identified as U. subvittatus with a 99.8% match in the mtDNA COI region. Goatfish U. subvittatus has no patterns on its body and dark bands on both the lower and upper caudal fins, making it well distinguishable from the four species of genus Upeneus reported in Korea. U. vittatus, reported in Japan, showed morphological differences from U. subvittatus in that the dark band on the lower lobe of the caudal fin was wider, and longitudinal stripes were present on the body. Based on the morphological characteristics of U. subvittatus, we suggest a new Korean name, "Jul-mu-nui-kko-li-chog-su".

• Korean Journal of Ichthyology
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• v.35 no.4
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• pp.313-324
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• 2023

Species composition and seasonal variation of aquatic organism were collected by pot and trammel net in the coastal waters of Taean in 2018. A total of 4,501 individuals belonging to 78 species were collected in two type of gears. The dominant species in the study area was Strongylocentrotus nudus (Echinodermata). In the pot survey, crustaceans were the most common taxa, with 52 species including Palaemon gravieri, whereas fish were dominant in trammel net with 57 species including Okamejei kenojei. Clustering analysis revealed two distinct groups, indicating that the composition of aquatic organism varies according to oceanographic condition and environmental changes.