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        광양만 잘피엽상에 서식하는 바다대벌레류의 계절변동

        윤성규(Sung Gyu Yun),변성혜(Sung Hye Byun),곽석남(Seok Nam Kwak),허성희(Sung Hoi Huh) 한국수산과학회 2002 한국수산과학회지 Vol.35 No.2

        1994년 6월에서 1995년 5월 사이 광양만 대도 주변의 잘피밭에서 Epifaunal sampler를 이용하여 매달 바다대벌레류를 채집하여 종조성과 계절변동을 조사하였다. 조사기간 동안 총 1과 1속 6종의 바다대벌레류가 출현하였다. 그 중 짧은팔바다대벌레 (Caprella tsugarensis)와 허리갈고리바다대벌레 (Caprella kroeyeri)가 각각 전체 개체수의 53.9%와 32.1%를 차지하며 우점하였다. 출현 종수, 개체수 모두 이른 여름철에 높았고 가을과 겨울철에는 낮아져 뚜렷한 계절변동을 보였다. 이러한 바다대벌레류의 계절변동은 잘피의 생체량 변동과 밀접한 관련을 보였다. 또한 어류의 포식압과도 연관이 있는 것으로 추정된다. Seasonal variations of species composition and density of caprellids was accomplished in eelgrass beds around Daedo Island, a south coast of Korea. Sampling was performed monthly using an epifaunal sampler at two stations from June 1996 to May 1997. Caprellids were comprised of 6 species belong to a family Caprellidae. Mean density was 402 ind./㎡. The numerically-dominant species were Caprella tsugarensis (216ind./㎡) and C. kroeyeri (129ind./㎡). High density was occurred in the early summer, and lows in autumn and winter. The density of caprellids was correlated with the biomass of the eelgrass. Predation pressure by fish was also correlated with the density of caprellids in spring.

      • 아산만 중부 해역의 여름철 대형저서동물군집의 구조

        변성혜,윤성규 대구대학교 기초과학연구소 2001 基礎科學硏究 Vol.18 No.1

        A study on the community structure of macrobenthos was accomplished at 10 stations in the Asan Bay, western coast of Korea. Sampling was performed for times using a Smith-McIntyre grab (0.05㎡) at ten stations to August 1996. The macrobenthos comprised of 105 species, annelids (47 spp. 44.8%), arthropods (36 spp. 31.4%), molluscs(12 spp. 11.4%) and others (13 spp. 12.4%). Mean density was 913 ind./㎡ and biomass was 101.2 gwwt./m2. Annelids was a density-dominant group with a mean density of 733 ind./m2 which occupied 80.3% of the total individual benthic animals. The major density-dominant species were four polychaetes, Capitella capitata (251 ind./㎡), Prinospio japonicus (111 ind./㎡), Hemipodus yenourensis (72 ind./㎡) and Tylorrhynchus heterochaetus (51 ind./㎡). Clustering analysis showed that the study area could be divided into two stational groups and three stations.

      • 여름철 보현천의 저서동물군집의 구조

        변성혜,윤성규 대구대학교 기초과학연구소 2003 基礎科學硏究 Vol.19 No.3

        The benthic macroinvertebrates in Bohyeon stream occured 61 species, 32 families, 13 orders, 7 classes in 4 phyla. Among them, aquatic insects containing 52 species were the major group and occupied 85.2% of the whole. In particular, Diptera containing 15 species was the most dominant. Second, Ephemeroptera containing 14 species was dominant. Number of species were similar at each station. Ephemeroptera were a density-dominant group with a mean density of 920 ind./㎡ which occupied 85.0% of the total individual of benthic animals. The major density-dominant species were five species of Ephemeroptera, Choroterpes (E.) altioculus (231 ind./㎡), Ecdyonurus kibunensis (194 ind./㎡), Serratella setigera (152 ind./㎡), Caenis KUa (109 ind./㎡), Ecdyonurus levis (69 ind./㎡). Clustering analysis showed that the study area could be divided into two stational groups. Number of species and species diversity (H') were more abundent Group A than Group B. Group A located in the upper stream.

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