• Korean Journal of Environmental Biology
• /
• v.40 no.2
• /
• pp.125-137
• /
• 2022

To assess the characteristics of meiofaunal community fluctuations related to environmental factors, seasonal surveys were conducted in the subtidal zone of Hallyeohaesang National Park. The average depth of the study area was about 20 m, and the average water temperature at the bottom was low in winter(11.33℃) and high in summer(17.95℃). The sedimentary particles mainly comprised silt and clay at most stations. The abundance of meiofauna ranged from 81.7 to 1,296.5 Inds. 10 cm^-2, and the average abundance was 589.3 Inds. 10 cm^-2. The average abundance of meiofauna in each season was the lowest at 416.5 Inds. 10cm^-2 in winter and the highest at 704.5Inds.10 cm^-2 in spring. The dominant taxa were nematodes (about 92%) and harpacticoids (about 5%). In the cluster analysis of meiofaunal communities, they were divided into four significant groups. The largest group mainly contained spring and summer samples, and contained stations with a high nematode density of over 500 Inds. 10 cm^-2 and harpacticoids below 50 Inds. 10 cm^-2 with a high composition ratio of nematodes. In the cluster analysis, no regional division was found between the stations, and it was thought to be divided by the seasons with high abundance according to seasonal variation and the composition ratio of nematodes and harpacticoids. In the Spearman rank correlation analysis, the density of total meiofauna and the most dominant taxa, nematodes, was not significantly related to environmental factors. However, the density of harpacticoids had a significant positive correlation with water depth and a negative correlation with sediment particle size.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.54 no.1
• /
• pp.101-106
• /
• 2021

The marine algal flora and community structure of Dadohaehaesang National Park, the Southwestern coast of Korea, were investigated monthly during May, July and September 2012. As the results, a total of 86 species including 10 greens, 17 browns and 59 reds was identified, except for blue-greens and crustose reds. The seaweeds that commonly appear during the investigation period are the green algae Ulva australis, the brown algae Ishige okamurae, Myelophycus simplex, Sargassum fusiforme and S. thunbergii and the red algae Gelidiophycus freshwateri, Gelidium. elegans, Corallina officinalis, C. pilulifera, Caulacanthus ustulatus, Ahnfeltiopsis flabelliformis, and Chondrus ocellatus. In Jodo district (Yemiri, Changuri), Ulva australis and Gloiopeltis furcata were dominant species in May, Sargassum fusiforme and Ulva australis were dominant in July, and Gelidiophycus freshwateri and Ulva australis were dominant in September. In Soan/Cheongsan district (Hwaheungpo, Jungdori), Gloiopeltis tenax and Chondracanthus tenellus were dominant species in May, and Gloiopeltis tenax and Chondracanthus tenellus were dominant in July as well as in the spring. And the Caulacanthus ustulatus and Corallina sp. were dominant species in September.

• Journal of Environmental Science International
• /
• v.31 no.5
• /
• pp.431-445
• /
• 2022

The Gwangju Stream is a major tributary of the Yeongsan River. To maintain environmental and ecological functions in the stream, the flow is secured by natural water from the Mudeung Mountain as well as waters discharged from Lake Juam and the Gwangju sewage treatment plants. A substantial amount of water is supplied into the upper reaches of Gwangju Stream from Lake Juam. To examine the ecological effects of the water input from Lake Juam on the Gwangju Stream, a field survey of phytoplankton community species and an evaluation of water properties was conducted at five stations, from station GJ1 before the inflow to station GJ5 in the lower region. Nutrient levels decreased in the vicinity of the Lake Juam inflow, suggesting that this water inflow can contribute to the reduction of eutrophication in the stream. The phytoplankton community was mainly composed of Bacillariophyceae, Chlorophyceae, and Cyanophyceae, and the community structure was similar to that of the other study sites located near the water inflow regions. The inflow of water from Lake Juam can affect water quality and the phytoplankton community over a limited area, reducing eutrophication and increasing water flow in the Gwangju Stream.

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 2000.10a
• /
• pp.162-163
• /
• 2000

연안역은 물리ㆍ화학적 변화가 매우 큰 해역이며 육상으로 부터의 유기물, 영양염 등 물질이 여러 경로를 통하여 유입되기 때문에 수질환경의 변화가 크고 유지관리하기 어렵다. 조사해역인 중문 연안역은 주변에 화력발전소와 하수종말처리장이 있으며 해상국립공원의 추진에 의한 생태계의 변화가 예상되는 해역이다. 이 해역에 대한 수질환경 연구는 방(방ㆍ홍, 1998), 김(김ㆍ최, 1998)둥이 있으며 최등(최ㆍ이ㆍ고, 1994), 문등(문ㆍ최, 1991)등에 의해 주변해역의 조사가 이루어졌다. (중략)

• Ocean and Polar Research
• /
• v.41 no.1
• /
• pp.1-10
• /
• 2019

Right after the 2007 Hebei Spirit Oil Spill phytoplankton ecosystems were investigated for 11 years based on the seasonal monitoring of the composition and abundance of phytoplankton species. Comparable time-series data from the 1989 Exxon Valdez or the 2010 Deepwater Horizon Oil Spill sites were not available. It was suggested that the ecological healthiness of phytoplankton ecosystems at EVOS sites had recovered after 10 years following the oil spill based on chlorophyll concentrations even though these concentrations only represented phytoplankton communities in most cases. Chlorophyll concentrations can only reflect limited aspects of highly complex phytoplankton ecosystems. During the last 11 years following the 2017 HSOS, extreme variabilities were met in the seasonally averaged ratios of diatoms to phototrophic flagellates including dinoflagellates based on the microscopic cell countings. Summer phytoplankton communities exhibited some cyclic interannual changes in dominant groups every 2-4 years. During the early years (2008-2010) cryptophytes or raphidophytes (Chattonella spp.) dominated alternately each year, which was repeated again in 2014, 2015 and 2017. Two thecate dinoflagellates, Tripos fusus and Tripos furca, together accounted for 52.5% and 50.0% of all organisms in the summers of 2011 and 2012, respectively, which was repeated again in 2018. Summer occurrence and dominance by the phototrophic flagellates including HABs (Harmful Algal Blooms) species as well as their interannual variabilities in the oil spill sites could be utilized as markers for the stable and long-term management of healthy ecosystems. For this type of scientific ecosystem management monitoring of chlorophyll concentrations may sometimes be insufficient to gain a proper and comprehensive understanding of phytoplankton communities located in areas where oil spills have occurred and harmed the ecosystem.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2012.06a
• /
• pp.194-196
• /
• 2012

본 연구에서는 해상교통관제제도(VTS)가 적용된 연안해역에서 해상통항흐름에 영향을 미치는 요소를 알아보고자 하였다. 본 연구의 목적을 달성하기 위해 해상교통환경조사는 2007년도부터 2012년까지 어장, 어로활동 및 해양구조물에 대한 마로해 인근해역에 대해 현지 조사방법을 사용하였다. VTS에서 제공하는 서비스종류에 대해 국제표준과 국내 적용 규정을 비교하고 2011년 연안해역에서 제공된 서비스에 대해 분석하였다. 동 해역의 해상교통흐름은 레이더와 선박자동식별장치 정보를 시공간적으로 중첩시켜 최근 6개월간 흐름패턴을 조사하였다. 연구 대상해역은 서남해 진도 인근해역($3,800km^2$)으로 통항분리제도와 탱커선통항금지해역 및 다도해해상국립공원을 포함하고 있다. 연구결과 연안해역에서 제공되는 서비스를 통해 해양사고를 18% 감소시켰다. 서비스 제공수준은 비정규분포를 보이며 공정능력은 향상된 것으로 나타났다. 안전한 해상교통환경 유지하기 위해 정기적인 연안해역 모니터링 및 관리체계의 확립에 대한 대응이 요구된다.

• 월간 기계설비
• /
• s.288
• /
• pp.62-74
• /
• 2014

가족끼리 놀러 가기로 했다. 한 아이는 수족관, 다른 아이는 동물원을 가자고 조른다. 부모는 어느 쪽으로 선택해야 할지 난감하다. 이럴 때 수족관과 동물원이 한 공간에 있다면 얼마나 좋을까? 이런 부모들의 마음을 헤아려 수족관과 동물원을 한 공간에 마련한 아쿠아리움이 있다. 지난 4월에 개장한 '한화 아쿠아플라넷 일산'이다. 아쿠아플라넷 일산은 국내에서 해양생물을 관람할 수 있는 63씨월드, 코엑스 아쿠아리움, 제주, 여수에 이어 다섯 번째지만 동물원과 수족관이 결합된 단일시설로는 국내 최초이며, 수도권 최대 규모의 아쿠아리움이다. 해양생물을 관람하려면 서울로 와야 하는 수도권 이북지역의 관람객을 겨냥했으며 호수공원, 국제전시단지, 한류월드로 이어지는 매머드급 접객시설이 밀집되어 있고 일산 킨텍스, 주엽역과 일산 꽃박람회장까지 연결되는 접근성이 뛰어나 전시단지의 상징적인 랜드마크로서 자리잡을 전망이다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.8 no.7
• /
• pp.1570-1575
• /
• 2004

The information on maritime affairs in South Korea has been provided by Ministry of Maritime affairs and fisheries, National Fisheries Research and Development Institute, Korea Ocean Research and Development Institute, National Oceanographic Research Development Institute, and the information on marine products and maritime environment has been lively producing by laborarories, universities and other private-run institutes.

• Korean Journal of Environmental Biology
• /
• v.25 no.2
• /
• pp.124-138
• /
• 2007

In order to characterize the current status and distribution of reptiles currently inhabiting the Republic of Korea, the results of survey data were analyzed in this study. The results of this analysis showed that the reptiles were distributed into two orders, seven families, and 21 species, with the exception of six marine reptiles, including Dermochelys coriacea schlegelii, Chelonia mydas japonica, Caretta caretta, Hydrophis melanocephalus, Hydrophis cyanocinctus, and Pelamis platrrus. Also, the taxonomic revisions of several species were suggested, although this would be ill-advised before further studies can be conducted regarding the current status of marine reptiles in the region.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2019.05a
• /
• pp.53-55
• /
• 2019

부산항 북항재개발사업은 신항 조성에 따른 국내 외 해운물류환경의 변화와 해양레저관광수요의 증가로 재래항만의 재정비 필요성이 대두됨에 따라 2004년 부산항 재래부두 재개발방안 연구용역을 시작으로, 2007년 시민설명회 등을 거쳐 수립된 북항재개발 마스터플랜과 "항만 및 그 주변 지역의 개발 및 이용에 관한 법률"의 제정으로 본격적으로 시행된 우리나라 최초의 항만재개발사업이다. 이에 따라 북항재개발사업을 통하여 국제해양 관광거점으로 육성하여 지역경제 활성화를 도모하고, 세계적인 워터프런트를 조성하여 바다의 주인인 시민들에게 여가 및 휴식공간을 제공함으로써 우리나라 고유의 차별화된 항만재개발 모델이 될 것으로 기대된다.