| 저자(한글) |
이재봉,차형기,신영재,장창익,이종희,국립수산과학원,국립수산과학원,국립수산과학원,부경대학교,국립수산과학원 |
| 초록 |
To investigate seasonal variation of fisheries resources composition and their correlationships with environmental facotrs in the coastal ecosystem of the middle Yellow Sea of Korea, shrimp beam trawl were carried out for the fisheries survey. Fisheries resources of 81 species, 57 families, and 6 taxa totally were collected by shrimp beam trawl in the middle coastal ecosystem of Yellow Sea of Korea. Species were included 6 species in Bivalvia, 6 in Cephalopoda, 22 in Crustacea, 2 in Echinodermata, 5 in Gastropoda, and 40 in Pisces. Diversity indices(Shannon index, H′) showed seasonal variation with low value of 2.14 in winter, and high value of 2.67 in spring. Main dominant species were Oratosquilla oratoria, Octopus ocellatus, Acanthogobius lactipes, Cynoglossus joyneri, Rapana venosa venosa, Loligo beka, Chaeturichthys stigmatias, Raja kenojei, Microstomus achne and Paralichthys olivaceus, that were occupied over 58% of total individuals, and 55% of wet weight. Fisheries organism made four coordinative seasonal groups by the principal component analysis (PCA), showing stronger seasonal variation than spatial variation. PCⅠ from PCA showed statistically significant cross-correlationships with seawater temperature, NH4-N, TP and chlorophyll a (P<0.05). |
