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서해 영광 연안 수산자원 2 . Otter Trawl 어획자원의 종조성
황선도(Sun Do Hwang),임양재(Yang Jae Lim),송홍인(Hong In Song),최용석(Yong Suk Choi),문형태(Hyung Tae Moon) 한국수산과학회 1998 한국수산과학회지 Vol.31 No.5
Demersal fishery resources were collected by an otter trawl in May, August and November 1996 at 9 stations off Youngkwang. And they were compared with the data obtained by a stow net. Of 73 species identified, assemblages were consisted of 63.0% in fish, 14% in shrimps, 14% in crabs, 5% in cephalopods and 3% in gastropods. Johnius grypotus, Palaemon gravieri, Crangon hakodatei, Cynoglossus joyneri, Collichthys niveatus predominated in abundance, consisting of 64.4% in the number of individuals. Catch by an otter trawl consisted mainly of demersal fishery resources, while catch by a stow net consisted mainly of pelagic fishery resources.
서해 영광 연안 수산자원 1 . 주목망 어획자원의 종조성
황선도(Sun Do Hwang),임양재(Yang Jae Lim),김용철(Yong Cheol Kim),차형기(Hyung Kee Cha),최승호(Seung Ho Choi) 한국수산과학회 1998 한국수산과학회지 Vol.31 No.5
Seasonal species composition of fishery resources was determined using samples collected by a stow net from April 1995 through January 1996 at 9 stations off Youngkwang. Catch data obtained from a set net using strong tidal current could be used for a quantitative analysis of dominant species. Of the 98 species identified, assemblages were consisted of 52.0% in fishes, 44.6% in shrimps, 2.0% in cephalopods, 1.4% in crabs and <0.1% in gastropods. Thryssa kammalensis, Crangon hakodatei, Metapenaeus joyneri and Johnius grypotus predominated in abundance, consisting of 68% in the number of individuals. The abundance and species composition fluctuated seasonally, and species could be distinguished by life history pattern with seasons. Seasonal variation in species composition was greater than the spatial variation in a sampling period. As the fine sediment was predominated in the study area, the species composition were significantly different from those of other coastal waters of West Sea, Korea.
조류가 강한 서해 하구에서 수동어구를 이용한 하구역 유영생물의 효율적 채집
황선도 ( Sun Do Hwang ),임양재 ( Yang Jae Im ) 한국어업기술학회 2011 수산해양기술연구 Vol.47 No.4
To obtain the effective sampling estuarine fauna by a passive net in the West Sea of Korea occurring strong tide, catch were collected by bag nets with various sampling trials off Ganghwa Island in November 2009. We compared the difference of community structures (on spring tide vs. neap tide, total sample vs. subsample and 4 nets vs. 1 net) with each species composition as a sampling unit by the Pearson chi-square test. Number of individual at the spring tide was more abundant than that at the neap tide (p<0.0001) although number of species at the spring tide was not significantly different with that at the neap tide (p〓0.174). Both number of species (p〓0.138) and number of individual (p〓0.096) were not significantly different between total sample and random subsample. Number of species was not significantly different between the subsample by 1 net and the subsample by 4 nets (p〓0.515), but number of individual was a little different on both samples (p〓0.024). In conclusion, we suggest the subsample by 1 net at spring tide as the effective sampling estuarine fauna by a passive net in the West Sea occurring strong tide.
한강 하구역 강화 갯벌 조간대 건간망에 어획된 유영생물 군집구조
황선도,노진구,이선미,박지영,황학진,임양재,Hwang, Sun-Do,Rhow, Jin-Goo,Lee, Sun-Mi,Park, Ji-Young,Hwang, Hak-Jin,Im, Yang-Jae 한국해양학회 2010 바다 Vol.15 No.4
한강 하구의 강화 갯벌 조간대에서 유영생물의 종조성을 파악하기 위히여 2009년 4월부터 12월까지 매월 1회 강화 석모수로 조간대에 설치된 건간망에 어획된 유영생물을 수집 분석하였다. 채집된 유영생물은 총 57종으로 그 중 어류가 34종으로 가장 많았고, 갑각류 20종, 두족류 2종 그리고 1종의 해파리가 출현하였다. 종조성은 봄과 가을에 다양한 종들이 출현하였으며, 양적으로는 가을에 많았다. 총 어획물중 꽃게 (Portunus trituberculatus)가 전체 개체수의 57.2%를 차지하여 가장 많았고, 다음으로 그라비새우(Palaemon gravieri) 7.1 %, 황강달이 (Collichthys lucidus) 7.0%, 무늬발게(Hemigrapsus sanguineus) 6.2%, 밀새우(Exopalaemon carinicauda) 4.7% 순으로 우점하였다. 우점종 중 가숭어(Chelon haematocheilus), 풀망둑(Synechogobius hasta), 웅어 (Coilia nasus), 그라비새우, 밀새우 등은 기수성 주거종이었으며, 꽃게, 황강달이, 숭어 (Mugil cephalus), 참서대(Cynoglossus joyneri) 등은 하구를 보육 및 성육장으로 이용하는 연안 회유종이었다. 그 외 양적으로는 적지만 황복(Takifugu obscurus), 참게(Eriocheir sinensis), 뱀장어 (Anguilla japonica) 등의 왕복 회유종과 붕어(Carassius auratus) 등의 담수종도 출현하였다. Seasonal variation in species composition of estuarine fauna in the Han River estuary was determined by analyzing monthly samples collected on the intertidal flat of Ganghwa Island by a fence net from April to December 2009. Total number of species was 57: 34 species of fishes, 20 species of crustacean, 2 species of cephalopods and 1 species of jellyfish. Of a total of 57 species, Portunus trituberculatus (57.2%), Palaemon gravieri (7.1%), Collichthys lucidus (7.0%), Hemigrapsus sanguineus (6.2%) and Exopalaemon carinicauda (4.7%) were predominated in abundance. Diverse species were occurred in spring and autumn, and abundance was high in autumn. Chelon haematocheilus, Synechogobius hasta, Co ilia nasus, P. gravieri and E. carinicauda were classified as the brackish residence species. P. trituberculatus, C. lucidus, Mugil cephalus and Cynoglossus joyneri were coastal migratory species which use the estuary as nursing and feeding grounds. Diadromous species (such as Takifogu obscurus, Anguilajaponica and Eriocheir sinensis) and freshwater fish (Carassius auratus) were also collected.
황선도(Sun Do Hwang),박영조(Young Jo Park),최수하(Soo Ha Choi),이태원(Tae Won Lee) 한국수산과학회 1997 한국수산과학회지 Vol.30 No.1
Seasonal variation in species composition of fish in the coastal water off Heunghae were determined using the samples collected by trammel net from May, 1989 to October, 1990. Of 28 species identified, three resident species such as Sebastes inermis, Hexagrammos otakii and Hexagrammos agrammus predominated in abundance except fall. In fall, temporal species such as Stephanolepis cirrhifer and Thamnaconus modestes were dominated. The number of species and abundance did not show seasonal variation. Mean catch per unit effort was 1,938 g (11 individuals) with a 100 m net during one night. Analysis of size composition of dominant species revealed that most fish collected were composed mainly of large individuals (>20 ㎝) whose ages were older than 3 years.