GEO DATA

Data Articles

Fish Diversity of East Sea Streams in Han River Region: Jeong Ho Hwang, Jong-Hak Yun; GEO DATA. 2024;6(4):312-323. Published online December 27, 2024; DOI: https://doi.org/10.22761/GD.2024.0031

250 View
17 Download

Abstract PDF: Fish surveys were conducted near artificial structures installed in nine streams flowing from the Han River region to the east coast of Korea. As a result of the survey, a total of 33,488 individuals belonging to 11 orders, 16 families, and 48 species were found. The dominant and subdominant species were Zacco koreanus, and Zacco platypus respectively. Among the surveyed fish species, endangered species (rank II) were Pungitius sinensis, Ladislavia taczanowskii, Phoxinus phoxinus, Lethenteron japonicus and Cottus hangiongensis. In addition, migratory fish species were Pungitius sinensis, Gymnogobius urotaenia, Tribolodon brandti, Oncorhynchus masou masou, Oncorhynchus keta, Plecoglossus altivelis, Lethenteron japonicus, Cottus hangiongensis and Tribolodon hakonensis. As a result of community analysis, Samcheokosip Stream, and Yangyangnamdae Stream have the highest diversity, and dominance indices respectively. Also, Jusu Stream has the highest richness and evenness indices. The highest number of species was surveyed in Gangneungnamdae Stream (24 species). Alpha diversity (the number of species at each survey point in each stream) was the highest at a survey point in Gangneungnamdae Stream (21 species), and beta diversity (species at each stream survey point that does not overlap with nearby survey point) was the highest at survey points in Gangneungnamdae Stream and Jusu Stream (10 species). As a result of the similarity analysis, surveyed streams were divided into five groups: group 1 stream (Yeongok· Samcheokosip·Gagok), group 2 stream (Yangyangnamdae·Hosan), group 3 stream (Gangneungnamdae), group 4 stream (Sangun·Jusu), and group 5 stream (Nakpung). This study is expected to serve as basic data for managing the aquatic ecosystem of streams flowing from the Han River region to the east coast.

Fish Diversity of East Sea Streams in Nakdong River Region: Jeong Ho Hwang, Jong-Hak Yun; GEO DATA. 2024;6(3):110-122. Published online September 30, 2024; DOI: https://doi.org/10.22761/GD.2024.0020

672 View
39 Download

Abstract PDF: Fish surveys were conducted near artificial structures installed in eight streams flowing from the Nakdong River region to the east coast of Korea. As a result of the survey, a total of 20,000 individuals belonging to nine orders, 17 families, and 47 species were found. The dominant species was Zacco koreanus, and the subdominant species was Pungtungia herzi. Among the surveyed fish species, endangered species were Pseudobagrus brevicorpus (rank I) and Cottus hangiongensis (rank II). In addition, migratory fish species were Oncorhynchus keta, Plecoglossus altivelis, and Tribolodon hakonensis. As a result of community analysis, the highest diversity, dominance, richness, and evenness indices were Wangpi, Chuksan, Gokgang, and Janggi Stream respectively. The highest number of species was surveyed in Gokgang Stream (25 species). Alpha diversity, the number of species at each survey point in each stream, was the highest at a survey point in Wangpi Stream (20 species), and beta diversity, species at each stream survey point that does not overlap with nearby survey point, was the highest at survey points in Gokgang Stream (12 species). As a result of the similarity analysis, surveyed streams were divided into four groups: group 1 (Chuksan, Baeknok Stream), group 2 (Uljinnamdae, Wangpi, Yungdeokosip Steam), group 3 (Gokgang Stream), and group 4 (Janggi, Hoeya Stream). This study is expected to serve as basic data for managing the aquatic ecosystem of streams flowing from the Nakdong River region to the east coast.

First
Prev
Page of 1
Next
Last

Search