GEO DATA

Data Article

Insect Fauna of Estuary Wetlands in Sacheon City: Ga-Hwa Cheon, Gon-Yang Cheon: Minhyeok Won, Yeounsu Chu, Sanghun Lee; GEO DATA. 2024;6(4):263-270. Published online December 3, 2024; DOI: https://doi.org/10.22761/GD.2024.0026

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Abstract PDF: Estuaries provide beneficial ecosystem services such as providing habitats for various species, and continuous monitoring of species, including insects, is necessary to prevent the destruction of estuaries. In this study, we analyzed the status and aspect of insect fauna in two estuary wetlands based on the results of Survey on Estuarine Ecosystem conducted in Ga-Hwa Cheon in 2013 and 2021 and Gon-Yang Cheon in 2023. A total of 464 insect species were found in the Ga-hwa Cheon and 753 species were found in the Gon-Yang Cheon. At the species level, Coleoptera (159 species), Hemiptera (101 species), and Hymenoptera (50 species) were dominant in the GaHwa Cheon, while Lepidoptera (478 species), Coleoptera (89 species), and Hemiptera (62 species) were dominant in the Gon-Yang Cheon. In the case of invasive species, Ricania sublimata and Vespa velutina nigrithorax were found in both two sites, and Eurema hecabe and Hierodula patellifera were found in both two sites as climate-sensitive biologocal indicator species. In the Ga-Hwa Cheon, Coenonympha hero was found, which corresponds to the vulnerable species of the International Union for Conservation of Nature (IUCN) Red List. Through this study, we analyzed the status and aspect of insect fauna in two estuary wetlands located in Sacheon-si, and it can be used as important basic data for establishing wetland conservation policies and plans, such as controlling invasive species.

Original Paper

Distribution Status of Invasive Alien Species in the Estuarine Wetlands in East and South Coast, Korea: Yeounsu Chu, Pyoungbeom Kim, Minhyeok Won; GEO DATA. 2024;6(2):56-62. Published online June 14, 2024; DOI: https://doi.org/10.22761/GD.2024.0007

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Abstract PDF Supplementary Material: Based on the results of survey on estuarine ecosystem conducted from 2021 to 2023, this study analyzed the distribution pattern of invasive alien species. A total of six invasive alien species (Micropterus salmoides [M. salmoides], Lepomis macrochirus [L. macrochirus], Lithobates catesbeianus [L. catesbeianus], Trachemys scripta [T. scripta], Pseudemys concinna [P. concinna], and Pseudemys nelsoni [P. nelsoni]) were identified across 118 estuarine wetlands. The survey revealed 960 individuals of M. salmoides, 2,596 individuals of L. macrochirus, 1,088 individuals of L. catesbeianus, and 44 individuals of T. scripta, while 1 individual of P. concinna and P. nelsoni were found. These invasive species were found to be densely distributed in estuarine wetlands in the Haenam and Goheung regions of the southern coast. Furthermore, the distribution density varied depending on the characteristics and locations of the estuarine wetlands. It was observed that the distribution density was higher in closed type than in open type, in riverine than in lacustrine, and in the south coast than in the east coast. Once the basic survey of estuarine wetlands located on the west coast is completed, a clearer understanding of the nationwide distribution characteristics of invasive alien species in estuarine wetlands can be achieved. This information will be crucial for formulating appropriate management strategies tailored to the characteristics of wetlands or coastal areas in the future.

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