• Animal Systematics, Evolution and Diversity
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• 제26권2호
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• pp.105-114
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• 2010

A study of Han River fish assemblage dynamics for 4 years was conducted. From April 2005 to August, 2008, fishes inhabiting two sites of Han River were sampled for identification. For further analysis, 40 individuals of the dominant species were sampled monthly from March 2006 to November 2008. The fish assemblage at site 1 was dominated by Zacco platypus (32.69%), while the subdominant species were Acheilognathus yamatsutae (14.4%), Acanthorhodeus gracilis (9.43%), Squalidus japonicus coreanus (6.84%), and Tridentiger brevispinis (5.18%). The most abundant species at site 2 was Korean Chub (Zacco koreanus) with relative abundance of 62.45% and followed by Pungtungia herzi (10.29%), Coreoperca herzi (8.67%), and Coreoleuciscus splendidus (6.82%) as the subdominant species. At both sites, the endemics populations show an increasing pattern during the whole survey period, while the natives were declining in the last two years.

• 한국수산과학회지
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• 제51권4호
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• pp.426-434
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• 2018

We investigated temporal and depth-related variation in species composition and abundance of the fish assemblage in the southern East Sea. Fish samples were collected seasonally between 2007 and 2008 using a demersal trawl off the southern coast of Korea. We identified 59 fish species belonging to 41 families. The most frequently occurring species was Coelorinchus multispinulosus, followed by Lophius litulon, Acropoma japonicum and Apogon lineatus. The five most abundant species were A. lineatus, A. japonicum, Myctophum nitidulum, Engraulis japonicus and C. multispinulosus, accounting for 87.04% of the total number of individuals collected. The number of species, abundance and diversity fluctuated with sampling location and time. Permutational multivariate analyses of variance revealed that the assemblage structure was influenced by year, season and water depth, with season being the main indicator. These changes were visually emphasized using non-metric multidimensional scaling ordination plots. Fluctuations in assemblage structure were due to differential contributions of the dominant species.

• 한국수산과학회지
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• 제35권4호
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• pp.366-379
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• 2002

가덕도 주변 해역에 서식하는 어류의 종조성과 계절 변동을 파악하기 위해 1998년 1월부터 12월까지 삼각망을 이용하여 어류를 매월 소조기에 채집하였다. 조사 기간 동안 채집된 어류는 69과 136종이었다. 전갱이 (Trachums japonicus), 전어 (Konosirus pu-nctatus), 숭어 (Mugil cephalus)가 우점하였는데, 이들 어종이 전체 채집 개체수와 생체량의 $63.7\%$와 $83.1\%$를 차지하였다 그밖에도 주둥치 (Leiognathus nuchalis), 복섬 (Takifugu niphobles), 고등어 (Scomber japonicus), 갈치 ( Trichiurus leptrus), 등줄숭어 (Chelon afnnis), 열동가리돔 (Apogon lineatus), 수조기 (NibeaalbiHora), 감성돔 (Acanthopagrus schlegeli) 등이 비교적 많이 채집되었다 채집 종수는 여름에 많았고 겨울에 적었다. 채집량은 봄에 높은 값을 보였으며, 겨울에 낮은 값을 보였다. 종다양도지수는 다른 계절에 비해 봄에 낮은 값을 보였다.

• 한국수산과학회지
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• 제43권6호
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• pp.693-704
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• 2010

Seasonal variation in species composition around Dokdo, East Sea of Korea, was investigated using trammel-net catches, from 2006 to 2009. A total of 53 fish species belonging to 23 families in 12 orders were captured; the orders Perciformes (12 families, 22 species) and Scorpaeniformes (four families, 22 species) were dominant. Between 2008 and 2009, 43 species were collected by trammel net. The number of species was highest in August 2009 (25 species) and lowest in February 2009 (11 species). The number of individuals and total biomass peaked in November 2009. Diversity indices for fish catches were highest in August 2008 (2.4368) and lowest in November 2009 (0.4253). The dominant species were Thamnaconus modestus and Sebastes schlegeli. Hierarchical clustering analysis showed five fish groups, with frequency and number of individuals similar to results of correspondence analysis (CA), which showed a closer relationship to the year term than the season term. CA showed that temperature was an important factor influencing fish species richness and abundance. Three main fish assemblage types coexisted around Dokdo: an East Sea coastal fish assemblage, a subtropical fish assemblage, and a cold water fish assemblage.

• 한국수산과학회지
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• 제33권4호
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• pp.288-301
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• 2000

가덕도 주변 해역에 서식하는 어류의 종조성과 계절 변동을 알아보기 위해 1998년 1월부터 12월까지 소형 기선저인망을 이용하여 어류를 매월 채집하였다. 조사 기간 동안 채집된 어류는 57과 110종이었다 실양태 (Repomucenus valenciennei), 청멸 (Thryssa kammalensis), 주둥치 (Leiognathug nuchalis), 등가시치 (Zoarces gilli)가 연중 우점하였는데, 이들 어종이 전체 채집 개체수와 생체량의 $57.6{\%}$와 $37.2{\%}를$ 차지하였다. 그 밖에도 청보리멸 (Sillagojaponica), 열동가리돔 (Apogon lineatus), 횐베도라치 (Pholis fangi), 멸치 (Engraulis japonicus), 풀반댕이 (nvssa adeire), 베도라치 (Pholis nebulosa), 붕장어 (Congo.my.iaste.), 꼼치 (Liparis tnnakai), 줄망둑 (Acentrogobius pnaunlii), 문치가자미 (Limanda yokohamae), 도화망둑 (Chaeturichthys hexanema), 풀미역치 (Erisphex pottii), 용서대 (Cynoglossus abbreviatus) 등이 비교적 많이 채집되었다. 채집 종수 및 채집량의 계절 변동을 보면, 봄과 가을에 높은 값을 보였으며 여름과 겨울에 낮은 값을 보였다. 종다양도지수는 가을에 높은 값을 보였다.

• 수산해양교육연구
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• 제27권1호
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• pp.253-261
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• 2015

The chemical water quality and fish assemblage of Dong Stream to assessment of environmental improvement after discharge seawater were investigated from July to December 2013. BOD and DO were significantly different between before and after discharge seawater, while pH and SS did not significant. A total of 11 fish species, 218 individuals and 10,525.1g were collected. Dominant fish species were Mugil cephalus, Konosirus punctatus, Acanthogobius flavimanus and Leiognathus nuchalis which account for 77.5% of total individuals collected, and they were estuarian species. Peak number of species and individuals, and biomass occurred in September, whereas diversity index were highest in November. The water ecosystem of Dong Stream have been changed estuarian environment. As a result of stream assessment on water quality and ecosystem, water quality have been improved as 'III' grade. These results suggested that stream restoration policies such as drain pipes maintenance, management of pollution sources and riverbed dredging to improve environment and recover habitate of Dong Stream were need for set up and establishment of regular monitoring system.

• 한국어류학회지
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• 제31권2호
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• pp.83-89
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• 2019

경남 고성군 당항만 하구에서 2011년 9월부터 2012년 8월까지 자연 하구인 배둔천 하구, 구만 마암천 하구는 소형 Beam trawl, 폐쇄 하구인 고성천 하구역에서는 투망으로 어류를 채집하였다. 염분은 폐쇄 하구가 자연 하구보다 변화 폭이 적었다. 자연 하구에서는 대부분 망둑어과 어류들이 채집되었으며 줄망둑(Acentrogobius pflaumi)과 문절망둑(Acanthogobius flavimanus) 순으로 우점하였다. 폐쇄 하구에서는 피라미(Zacco platypus)와 민물검정망둑(Tridentiger brevispinis) 순으로 우점하였고 담수 어종이 대부분 채집되었다. 당항만 하구역에 설치된 하구둑에 의해 염분을 포함한 환경조건이 바뀌어 서식하는 어류상이 크게 변화되었다.

• 수산해양기술연구
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• 제46권4호
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• pp.335-345
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• 2010

Species composition and seasonal variation of fish assemblage in Sacheon marine ranching, Korea were examined. Sampling was seasonally made by a shrimp trawl from February 2009 to November 2009. A total of 55 species were collected. Of these, five species was dominant species comprising 51.1% of the total number of individuals. Nine species represented 57.3% of the total biomass. While total abundance (number of individuals) was high in spring, total biomass and species richness (number of species) and diversity were high in autumn. Cluster analysis, based on seasonally abundance data of the 21 most common species, showed that the species were separated into 4 different groups. Group A composed of Pholis nebulosa, Pleuronectes yokohamae, Hypodytes rubripinnis, Hexagrammos otakii, Tridentiger trigonocephalus and Paracercis sexfasciata, which were year round residents, group B Congr myriaster, Leiognathus nuchalis, and Platycephalus indicus, which were abundant in autumn, group C Sillago japonica, Pseudaesopia japonica, Zoarces gilli, Pholis fangi, and Pleuronichthys cornutus which were abundant in spring, and group D Sillago sihama, Cociella sp., Johnius grypotus, Cynoglossus joyneri, Cynoglossus robustus, and Pennahia argentata, which were abundant in summer. Principal component analysis revealed that seasonal variation in the fish assemblage was attributed to the abundance of temporal species such as conger and sand smelt fishes, which were abundant in summer, due to seasonal variation of water temperature.

• 한국어류학회지
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• 제24권3호
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• pp.191-200
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• 2012

경남 통영 풍화 잘피밭에서 2010년 11월부터 2011년 10월까지 예인망(surf net)으로 채집하여 어류의 종조성 특성을 조사하였다. 조사기간 동안 총 30종, 5,511개체, 6,933.4 g의 어류가 채집되었다. 우점종은 베도라치(Pholis nebulosa), 실고기(Syngnathus schlegeli), 그물코쥐치(Rudarius ercodes), 가시망둑(Pseudoblennius cottoides), 볼락(Sebastes inermis), 실비늘치(Aulichthys japonicus)로 총 출현 개체수의 93.4%를 차지하였다. 출현한 대부분의 어류는 크기가 작거나 대형 어종의 유어들로 이루어져 있었다. 잘피의 밀도는 2011년 4월이 가장 높았으며 2011년 1월이 가장 낮았다. 수온과 잘피의 밀도 및 중량, 주 먹이생물의 양적 변동이 어류 군집의 계절변동에 영향을 미치는 것으로 나타났으며, 풍화 잘피밭이 많은 어종들에게 좋은 성육장의 역할을 하고 있는 것으로 생각된다.

• 한국수산과학회지
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• 제36권4호
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• pp.378-388
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• 2003

Seasonal variations in abundance and species composition of fish assemblage around Narodo were examined. Fish samples were monthly collected by a beam trawl from December 2000 to November 2001. A total of 62 fish species representing 37 families were collected. Of these, Thryssa kammalensis, T. hamiltoni, Chaeturichthys hexanema, Johnius grypotus, Leiognathus nuchalis, Cynoglossus robustus and Setipinna taty were dominant species comprising $82\%$ of the total number of individuals. Species diversity indices ranged from 1.2 to 2.2 showing the highest values from September to November 2001. The fish assemblage was divided into three different groups by cluster analysis of the fourteen dominant species. The main residence species were J. grypotus, L. nuchalis, C. hexanema, C. robustus, Setipinna tenuifilis, T. kammalensis and Ctenotrypauchen microcephalus. Of the temporal species T. hamiltoni, Liparis tanakai and Erisphex pottii were collected In spring, and Muraenesox cinereus and Trichiurus lepturus were in summer and autumn. Principal component analysis revealed that seasonal variation in the fish assemblage was attributed to the abundance of temporal species due to seasonal variation of environmental factors such as water temperature and ecological pattern (polagic/demersal) of fish species.