Species Composition of the Catches collected by a Bottom Trawl in the Southern Waters of Korea in Summer, 2004

Jeong, Sun-Beom; Hwang, Doo–Jin; Kim, Young‐Ju; Shin, Hyeong-Ho; Son, Yong-Uk

doi:10.3796/ksft.2005.41.1.035

Cited by 10 publications

(2 citation statements)

References 1 publication

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“…Upon comparison with the results obtained by traditional methods, the identified numbers of species are impressive. For instance, 44 and 25 species were observed by five repeats of bottom trawls and two uses of a gill net, respectively, in similar locations (Jeong et al, 2005;Oh et al, 2014). The number of species detected in this study was almost one-third of that by 3-year-long surveys (356 species), conducted in the southern sea of Korea using multiple traditional methods, including diving, various nets and trawls, and fish market surveys (Moon et al, 2015).…”

Section: Discussionmentioning

confidence: 54%

Environmental DNA Metabarcoding Analysis of Fish Assemblages and Phytoplankton Communities in a Furrowed Seabed Area Caused by Aggregate Mining

et al. 2022

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To estimate the impact of aggregate mining on a marine ecosystem, fish assemblages and phytoplankton communities were analyzed using environmental DNA metabarcoding. Metabarcoding analysis revealed 152 fish amplicon sequence variants (ASVs) (88 in September and 118 in February), which were assigned to 29 orders, 62 families, 104 genera, and 114 species (73 in September and 89 in February). Heatmap analysis showed that the fish assemblages in the mining area clearly differed from those in the surrounding area and that Pagrus major, Lateolabrax japonicus, Zeus faber, and Eopsetta grigorjewi were significantly more abundant there than in the surrounding area. In the phytoplankton community in September, the phyla Cyanobacteria and Haptophyta differed significantly between the mining area and its surroundings. By contrast, no such significant differences were identified in February, presumably due to the low temperature impeding phytoplankton growth. Taking these findings together, mining activities clearly affect fish and phytoplankton communities, but further long-term study is required to assess their impacts on marine ecosystems.

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Section: Discussionmentioning

confidence: 54%

Environmental DNA Metabarcoding Analysis of Fish Assemblages and Phytoplankton Communities in a Furrowed Seabed Area Caused by Aggregate Mining

et al. 2022

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“…Gwangyang Bay (GYB; Figure 1) in the Republic of Korea is a temperate embayment system with diverse habitats [e.g., common reed beds, bare intertidal mudflats covered with microphytobenthos (MPB), eelgrass beds] that is exposed to both riverine discharge and the open sea (Kim et al, 2010). GYB is known to be highly productive and provides habitats to numerous fish species (Jeong et al, 2005;Seo et al, 2013). Rainfall-induced variation in river discharge and seasonally variable autotroph biomass bring spatial and seasonal variabilities in OM composition in GYB (Choy et al, 2008;Sin et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton Fuel Fish Food Webs in a Low-Turbidity Temperate Coastal Embayment: A Stable Isotope Approach

Kundu

Kim

et al. 2021

Front. Mar. Sci.

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Trophic contributions of diverse OM sources to estuarine and coastal food webs differ substantially across systems around the world, particularly for nekton (fish, cephalopods, and crustaceans), which utilize basal resources from multiple sources over space and time because of their mobility and feeding behaviors at multiple trophic levels. We investigated the contributions of putative OM sources to fish food webs and assessed the spatiotemporal patterns, structures, and trophic connectivity in fish food webs across four seasons from three closely spaced (10–15 km) sites: an estuarine channel (EC), a deep bay (DB), and an offshore (OS) region in Gwangyang Bay, a high-productivity, low-turbidity estuarine embayment off the Republic of Korea. While nearly all previous studies have focused on few representative species, we examined δ13C and δ15N values of whole nekton communities along with dominant benthic macro-invertebrates, zooplankton, and their putative primary food sources. The δ13C and δ15N values coupled with MixSIAR, a Bayesian mixing model, revealed that these communities utilized multiple primary producers, but phytoplankton comprised the primary trophic contributor (46.6–69.1%). Microphytobenthos (15.8–20.4%) and the seagrass Zostera marina (8.6–19.8%) made substantial contributions, but the role of river-borne terrestrial organic matter was negligible. Spatially different species composition and stable isotope values, but higher utilization of coastal phytoplankton by estuarine fish, indicated disparate food webs structures between the EC and DB/OS coastal areas, with considerable trophic connectivity. Greater overlaps in fish and cephalopod isotopic niches than among other consumers and a higher estimated carbon trophic enrichment factor for EC nekton confirmed feeding migration-mediated biological transport of coastal OM sources to the estuary. Further, the seasonally consistent structures and resource utilization patterns indicate that fish food webs are resilient to changes at lower trophic levels. Our results contrast with those for other highly turbid coastal systems depending highly on diversified basal sources, including exported terrestrial and wetland detritus alongside autochthonous phytoplankton. Finally, this study provides a novel perspective on the role of OM sources in such low turbidity and highly productive coastal embayments and enhances our understanding of marine ecosystems.

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Distribution and Seasonal Changes of Fisheries Resources in the Gwangyang bay

Kim¹,

Han²,

Oh³

et al. 2018

JFMSE

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Species Composition of the Catches collected by a Bottom Trawl in the Southern Waters of Korea in Summer, 2004

Cited by 10 publications

References 1 publication

Environmental DNA Metabarcoding Analysis of Fish Assemblages and Phytoplankton Communities in a Furrowed Seabed Area Caused by Aggregate Mining

Environmental DNA Metabarcoding Analysis of Fish Assemblages and Phytoplankton Communities in a Furrowed Seabed Area Caused by Aggregate Mining

Phytoplankton Fuel Fish Food Webs in a Low-Turbidity Temperate Coastal Embayment: A Stable Isotope Approach

Distribution and Seasonal Changes of Fisheries Resources in the Gwangyang bay

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