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부산 기장 연안에서 저인망으로 어획된 어류 군집의 계절 변화
황철희,박윤정,Hwang, Choul-Hee,Park, Yun Jeong 한국수산과학회 2017 한국수산과학회지 Vol.50 No.4
The seasonal and interannual variations in fish assemblages in the coastal waters off Gijang were examined with an otter trawl from 2015 to 2016. A total of 59 fish species was collected during the study period. The dominant species were Caelorinchus multispinulosus, Clupea pallasii pallasii and Chelidonichthys spinosus. Seasonal changes in fish assemblages appeared to be distinct in the study area. The fish assemblages in summer and autumn were clearly distinguishable from those in other seasons, and the largest numbers of species and individuals were captured in winter and summer, respectively. Because fish assemblages are closely related to changes in water temperature, long-term changes in water temperature can have a significant impact on the productivity of offshore fisheries by changing fish species composition, habitat migration, and growth rate of fish.
황철희(Choul Hee Hwang),주현(Hyun Joo),손민호(Min Ho Son),김창훈(Chang Hoon Kim) 한국생태공학회 2017 한국생태공학회지 Vol.6 No.1
In order to evaluate the effects of artificial seaweed bed on fisheries resources, field investigations were conducted at Geomundo during Fall and Winter, 2015. Populations and food-habits of benthos and marine fishes were used as indices for the development of fisheries resources. As a result, a total of 139 species were found at artificial seaweed bed and based on the standing crop per hectare, benthos was 16.1×10⁶ individuals (3.7 ton), marine fishes was found 663 individuals (169.2 kg) in artificial seaweed bed. The number of species and standing crop in artificial seaweed bed was about 2∼5 times higher than the natural rocks in the nearby, suggesting that diversity and standing crop can be increased according to the formation of the artificial seaweed bed. Along with the establishment of marine ecosystems, follow-up management on artificial seaweed bed and extermination of harmful organisms should be properly implemented in order to sustain remediation of ecosystems and enrichment of fisheries resources. In conclusion, it appears that the establishment of artificial seaweed bed could result in increasing biomass of marine invertebrates and consequently homing marine fishes into seaweed bed.
김근용,김영수,황철희,이창규,임월애,김창훈,Kim, Keun-Yong,Kim, Young-Soo,Hwang, Choul-Hee,Lee, Chang-Kyu,Lim, Wol-Ae,Kim, Chang-Hoon The Korean Society of Phycology 2006 ALGAE Vol.21 No.3
This study carried out phylogenetic analysis of dinoflagellate Gonyaulax polygramma which was responsible for a harmful algal bloom episode in Korea in 2004. Molecular phylogenetic tree inferred from the partial LSU rDNA data showed that G. polygramma came up among the monophyletic Gonyaulax clade, but did not have apparent genetic affiliation to other Gonyaulax species. This result appears to be consistent with characteristic morphological features of G. polygramma such as epitheca sharply tapering to the apex and thecal plates ornamented with numerous longitudinal striations.
한수진 ( Su Jin Han ),김영윤 ( Young-ryun Kim ),김현정 ( Hyun-jung Kim ),황철희 ( Choul-hee Hwang ) 한국수산과학회 2021 한국수산과학회지 Vol.54 No.6
This study examined the characteristics and seasonal distribution patterns of subtidal marine algal communities along the east coast of Korea, from 2016 to 2017, and recorded the coverage ratio (%) by the algal type. During the study period, 134 marine algae species (16 green, 29 brown, and 89 red) were identified at the survey sites. The maximum number of species was observed at the Nagok site (70 species), and the minimum at the Gisamoon site (50 species). The total average biomass (dry weight) during the survey period was 66.22 g/㎡, including green algae (2.19 g/㎡), brown algae (38.10 g/㎡), and red algae (25.94 g/㎡). The dominant seaweeds in the vertical distribution based on coverage rates (%) were Sargassum yezoense and Dictyopteris divaricata at the upper, Symphyocladia latiuscula and Undaria pinnatifida at the middle, and Agarum clathratum subsp. yakishiriense and Plocamium telfairiae at the lower sections of the distribution. Richness, evenness, and diversity index, calculated based on the biomass of the abundant species, were estimated to be 6.36, 0.55, and 1.98, respectively, over the entire sea area. Based on the evaluation of the environmental states using community indices, the ecological evaluation index (EEI-c) of subtidal marine algal communities along the east coast of Korea was marked as ‘good-moderate’.
우이도 주변해역 조하대에서 춘계와 추계에 서식하는 대형무척추동물의 군집구조
서인수 ( In Soo Seo ),최병미 ( Byoung Mi Choi ),윤재성 ( Jae Seong Yun ),김대익 ( Dae Ik Kim ),이종욱 ( Jong Uk Lee ),황철희 ( Choul Hee Hwang ),강양순 ( Yang Soon Kang ),강영실 ( Young Shil Kang ),손민호 ( Min Ho Son ) 한국환경생물학회 2010 환경생물 : 환경생물학회지 Vol.28 No.3
This study was performed to investigate the community structure of the macrobenthic invertebrates around Ui Island, Sinan-gun, Jeollanam-do, Korea. Benthic invertebrates were collected during May and September 2008 at seven stations. A total of 63 macrobenthic species was collected. The overall average macrobenthos density and biomass were 268 inds. m-2 and 11.54 gWWt m-2, respectively. Based on abundance data, there were 5 dominant species accounting for approximately 72.00% of total individuals. The polychaetes Notomastus latericeus, Scolelepis sagittaria, Amaeana occidentalis, Glycera chirori and the amphipoda Mandibulophoxus mai were found in high densities. The conventional multi-variate statistics (cluster analysis and non-metric multidimensional scaling) applied to assess spatial variation in macrobenthic assemblages. As a result, three communities could be distinguished: a sand dominated, a mixed sediment and a third community in the mud dominated station. The community in the sand dominated station was characterized by high abundance of the polychaetes S. sagittaria and the amphipods M. mai, Monoculodes sp. and Grandifoxus malipoensis. However, the most common species within the mixed sediment station were the polychaetes N. latericeus, A. occidentalis and amphipoda Urothoe sp.. Finally the mud dominated station was numerically dominated by the polychaetes Scolelepis sp., Heteromastus filiformis and Sigambra tentaculata. In conclusion, the sediment composition may be important factors controlling of the macrobenthic community structure in the study area.