Spatial Characteristics of the Macrobenthos Community Near the Nakdong River Estuary, on the Southeast Coast of Korea

이형곤,; 이재학,; 유옥환,; 김종관,

doi:10.4217/opr.2005.27.2.135

Cited by 12 publications

(2 citation statements)

References 6 publications

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“…The Nakdong River estuary is an essential spawning and breeding ground for commercial fish and shellfish because of its high fishery productivity and abundance of young individuals [9,10]. However, the construction of estuary barrages has been identified as the primary factor causing sudden changes in estuarine ecosystems, including changes in the oceanographic environments [11], the biota of mollusks and crustaceans [12], macrobenthos communities [13]], and fish assemblages [14]. Estuarine barrages were initially constructed in the eastern main channel of the lower Nakdong River in 1987, and eight additional barrages were added to the western channel as part of river-dredging activities in 2013.…”

Section: Introductionmentioning

confidence: 99%

Spatio-Temporal Dynamics of Larval Fish Assemblage in the Nakdong River Estuary, South Korea

Choi,

Youn,

Kim

et al. 2024

Diversity

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Estuaries are crucial fish nursery habitats owing to their high productivity and the presence of various microhabitats for the early development of aquatic organisms. This study investigated the temporal and spatial patterns of the species composition and abundance of larval fish assemblages in the Nakdong River estuary, South Korea, through bi-monthly sampling in the inner and outer estuaries. Fifty-five larval taxa were collected, and the larval fish assemblages were dominated by a few species. Engraulis japonicus (28.8%) was the most abundant, followed by Gobiidae sp.1 (22.6%), Clupea pallasii (13.9%), and Omobranchus sp. (6.1%). The species richness, abundance, and diversity tended to be higher during the warm season in the inner estuary. Multivariate analyses revealed that the structures of larval fish assemblages were significantly influenced by the season and site. Spatial and seasonal changes in larval fish assemblages resulted from the different occurrence patterns of common fish larvae in relation to water temperature and salinity. Among the predominant fish larvae, E. japonicus was captured more frequently in more saline outer estuaries during the warm season, whereas Gobiidae sp.1 and C. pallasii were more abundant in less saline inner estuaries during the warm and cold seasons, respectively. The results of this study improve our understanding of larval biodiversity in estuarine habitats in relation to environmental modification and contribute to the evaluation of nursery functions in the Nakdong River estuary.

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Section: Introductionmentioning

confidence: 99%

Spatio-Temporal Dynamics of Larval Fish Assemblage in the Nakdong River Estuary, South Korea

Choi,

Youn,

Kim

et al. 2024

Diversity

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“…우리나라 하구역의 저서동물군집에 대한 연 구로는 여름철 서해의 금강, 만경강, 동진강 하구역 (Choi and Koh 1994), 한강 하구역과 경기만 해역 (Hong and Yoo 1996), 영광 법성포 와탄천 하구역 (Lim and Hong 2002), 낙동강 하구역 주변 해역 (Lee et al 2005;Park et al 2016;Seo et al 2016), 강원도 양양 남대천 하구역 (Hong et al 2000) 등이 있다. 그러나 섬진강 하구역에 서 식하는 저서동물에 대한 연구들은 섬진강 하구역이 일부 포함된 광양만 해역에 대한 연구는 일부 수행되어져 왔으 나 (Choi et al 2003a;2003b), 섬진강 기수역에 서식하는 대형저서동물에 대한 연구는 Kang et al (2014), Lim et al (2012)의 연구에 불과하다.…”

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Spatial Distributions of Macrozoobenthic Communities in the Seomjin River Estuary

서진영¹,

김정현²,

최진우³

2017

Ocean and Polar Research

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: This study was carried out to investigate the spatial distributions of the macrobenthic communities in the Seomjin River estuary from May, 2015 to May, 2016. The number of species was 163, the mean density was 1,865 ind.m -2 , biomass was 204 g·wet m -2 during this study period. The highest number of species and density appeared among polychaetes whereas the most biomass was contributed by mollusks due to the presence of Corbicula japonica in every season. The study area was divided into 3 regions with similar benthic fauna responding to the gradient of the salinity. Praxillella praetermissa was the dominant species in regions of over 30 psu during all seasons. C. japonica and Hediste diadroma were dominant in the upper regions of the Seomjin River where the salinity was less than 10 psu. Heteromastus filiformis showed the broadest distributional range and dominated in all seasons except for the most upper stream at st. 7. From the result of the Bio-Env analysis, salinity was the most important environmental factor affecting the formation of macrobenthic communities in the study area, and salinity and TOC were the highest contributors to the macrobenthic communities. From the correlation analysis between major dominant species and environmental factors, C. japonica, Prionospio japonica and H. diadroma showed a negative correlation with salinity, while P. praetermissa and Scolectoma longifolia showed a positive correlation. H. filiformis was little affected by salinity but showed a positive correlation with TOC or silt content of sediment.

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Depositional environment classification based on environmental variables of South Korea's Nakdong River Estuary barrier-lagoon system

Choi

Kang

Lee

et al. 2019

Marine Pollution Bulletin

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Spatial Characteristics of the Macrobenthos Community Near the Nakdong River Estuary, on the Southeast Coast of Korea

Cited by 12 publications

References 6 publications

Spatio-Temporal Dynamics of Larval Fish Assemblage in the Nakdong River Estuary, South Korea

Spatio-Temporal Dynamics of Larval Fish Assemblage in the Nakdong River Estuary, South Korea

Spatial Distributions of Macrozoobenthic Communities in the Seomjin River Estuary

Depositional environment classification based on environmental variables of South Korea's Nakdong River Estuary barrier-lagoon system

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