가시망둑(1.80~10.01 cm TL)의 성장과 생산량에 대한 연구를 동대만 잘피밭에서 2006년도에 실시하였다. 가시망둑 시료는 소형 빔트롤로 총 702개체를 채집하였다. 본 연구 결과, 가시망둑에 대한 전장(TL)의 성장식은 TL=0.0539 d0.9105, 전장과 체중의 관계식은 W=0.0079 TL3.1103 이었다. 가시망둑의 단위면적당 밀도, 생체량, 일일생산량, 연간생산량은 각각 0.06±0.062/m2, 0.10±0.144 g/m2, 0.0005±0.0006 g AFDW/m2/day, 0.1833 g AFDW/m2/year이었으며, P/B의 비율은 1.813이었다. 가시망둑 생산량은 생체량의 높았던 5월과 7월 9월에 가장 높았으며(0.0029, 0.0031, 0.0019 g AFDW/m2/day), 생체량이 낮았던 12월에 가장 낮았다(0.00004 g AFDW/m2/day). 가시망둑의 월별 생산량의 변화에서 양의 상관관계를 보인 것은 생체량과 수온이었다.

A total of 164 individuals of Hippocampus coronatus were collected from an eelgrass bed in Dongdae Bay, Korea from September 2006 to August 2007. The number of individuals of H. coronatus was higher in September 2006. The size of H. coronatus ranged from 2.4 to 9.3cm in height (Ht), and most of individuals were small size below 5cm (Ht). H. coronatus was a carnivore which consumed mainly gammarid amphipods and copepods. Its diets also included a small amount ofmysids, ostracods, brachiopods, caprellid amphipods, bathynellaceas, isopods, tanaids, and ascothoracids. The diets of H. coronatus underwent size-related changes; smaller individuals consumed copepods, while larger individuals ate gammarid amphipods and mysids. The dietary breadth index of H. coronatus was increased with increasing of their size.

실비늘치(6.70~5.32 cm TL)의 성장과 생산량에 대한 연구는 동대만 잘피밭에서 2006년도에 실시하였다. 실비늘치 시료는 소형 빔트롤에 의해서 총 888개체가 채집되었다. Bertalanffy 성장식을 이용하여 구한 전장의 성장식은 Lt=24.8257(1-e-0.5583(t+0.4816))이었다. 실비늘치의 밀도, 생체량, 일일생산량, 연간생산량, 그리고 P/B ratio는 각각 0.01±0.009/m2, 0.17±0.16g/m2, 0.00006±0.00006g AFDW/m2/day, 0.02g AFDW/m2/yr, 그리고 0.12이었다. 실비늘치 생산량의 월변화는 컸으며, 7월(0.000182g AFDW/m2/day), 9월(0.000127g AFDW/m2/day) 그리고 11월(0.000123g AFDW/m2/day)에 높았으며, 4월과 5월(0.000003g AFDW/m2/day)에 가장 낮았다. 실비늘치의 생산량의 월변화는 개체수와 생체량, 그리고 성장률과 양의 상관관계를 보였다.

In order to understand food sources-metabolism for the pacific oyster (Crassostrea gigas), the stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) of its gut, gill, and muscle as well as potential food sources (particulate o

Nitrogen dynamics of Seagrass Zostera marina were investigated in both Dongdae Bay and Ojiri from March to August, 2004. All seagrass samples were separated into four fractions such as leaves (new and adult), sheath and rhizome in order to understand temp

In this study, sediment cores from unvegetated tidal flats in the Hampyeong Bay (west coastal wetland) and Dongdae Bay (south coastal wetland) were sampled, the blue carbon stock in the sediments was calculated, and the characteristics of the blue carbon stock were analyzed based on particle size of the sediments. The sediments in the Hampyeong Bay tidal flat had large particle size and low mud content, and the Dongdae bay tidal flat had small particle size and high mud content. The organic carbon content and blue carbon stock in the sediments were higher in the Dongdae tidal flat than in the Hampyeong Bay tidal flat. As a result of the regression function, in both the Hampyeong Bay and Dongdae Bay tidal flats, the sediments had the smaller particle size and higher mud contents the higher the organic carbon content and blue carbon stock. The sediments with smaller particle size had the larger specific surface area, so were feasible to adsorb and store more organic matters.