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http://dx.doi.org/10.5657/kfas.2008.41.4.272

Seasonal Variation in the Species Composition of Bag-net Catch from the Coastal Waters of Incheon, Korea  

Song, Mi-Young (Fishery Resources Division, West Sea Fisheries Institute, NFRDI)
Sohn, Myoung-Ho (Fishery Resources Division, West Sea Fisheries Institute, NFRDI)
Im, Yang-Jae (Jeju Fisheries Research Institute, NFRDI)
Kim, Jong-Bin (Fishery Resources Division, West Sea Fisheries Institute, NFRDI)
Kim, Hee-Yong (Fishery Resources Division, West Sea Fisheries Institute, NFRDI)
Yeon, In-Ja (Fishery Resources Division, West Sea Fisheries Institute, NFRDI)
Hwang, Hak-Jin (Fishery Resources Division, West Sea Fisheries Institute, NFRDI)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.41, no.4, 2008 , pp. 272-281 More about this Journal
Abstract
Seasonal and annual variation in the species composition of bag-net catch in the coastal waters of Incheon, Korea were examined from April 2000 to November 2004. To analyze seasonal variation of the fisheries data, we implemented a self-organizing map(SOM), an unsupervised artificial neural network, with the catch amount of 97 species. Over 5 years, we caught 68 species of fish, 23 species of crustaceans and six species of cephalopods. The total number of fish species were gradually increased during the study period. The number of species was higher during the spring than the autumn. The SOM identified four groups of the sampling months based on seasonal changes in communities. In the spring, the dominant species were Leptochela gracilis and Pholis fangi; whereas, in the autumn, Engraulis japonicus and Portunus trituberculatus were dominant species in bag-net catch. Our results will be used to estimate seasonal and annual variation in fisheries resources of Korean coastal waters.
Keywords
Bag-net catch; Incheon coastal waters; Self-organizing map(SOM);
Citations & Related Records
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