• Title/Summary/Keyword: 해양어도

Search Result 348, Processing Time 0.023 seconds

Studies on the Fish Larvae Community in the Sea Around Cheju Island in November, 1986 (제주도 주변 해역의 치자어 군집에 관한 연구-가을철)

  • Yoo, Jae-Myung;Kim, Sung;Lee, Eun-Kyung;Kim, Yong-Uk
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
    • /
    • v.3 no.2
    • /
    • pp.71-79
    • /
    • 1998

  • Fish larvae and environmental variables were collected in the sea around Cheju Island of Korea in November, 1986. Fish larvae were found at the 43 of 44 stations. Abundance of fish larvae rangεd from 3 to 259 indiv./$10^3\;m^3$ (average 50 indiv./$10^3\;m^3$) Dominant species were Engraulis japonicus, Champsodon snyderi, Gobiidae, Sebastiscus marmoratus, and Synagrops philippinensis, which comprised 56.6% of total fish larvae abundance. 43 stations were c1assified into two groups by c1uster analysis based on the abundance of fish taxa. Most stations of Group I were located in the middle reach of Tsushima Current and had higher number of species and abundance than the sites of Group II which cover the marginal areas of Tsushima Current, Korean Coastal Waters, and coastal water of China. The dominant taxa in the sites of the Group I were E. japonicus, Gobiidae, S. philippinensis, Aulops japonicus, Bregmaceros spp., Benthosema pterotum, Lampanctus spp., etc., all of which are typical warm-water species. Therefore, Tsushima Current seems to be the most critical factor regulating the structure of fish larvae community in the study area. The discriminant analysis using the environmenta1 variables (temperature, salinity, and dissolved oxygen) produced result with a difference only of 11.6% from that of c1uster analysis using the taxa composition and abundance data. Consequently, the structural type of fish larvae community can be used for predicting the changes of environmental conditions in the study area.

  • PDF

어 . 패류의 어장환경

  • Jo, Gyu-Dae;Choe, Yong-Gyu
    • Proceedings of the Korean Society of Fisheries Technology Conference
    • /
    • 1994.06a
    • /
    • pp.72-90
    • /
    • 1994