Late Holocene diatoms in sediment cores from the Gonggeomji Wetland in Korea

Abstract

Late Holocene diatoms were identified from four sediment cores from the Gonggeomji Wetland in Korea. In total, 52 diatom species belonging to three classes, 21 families, and 29 genera were investigated. Of these, 14 species were new records for Korea: Caloneis wardii, Cocconeis klamathensis, Encyonema vulgare, Eunotia myrmica, Fallacia californica, Gomphonema asiaticum, Gomphonema insigniturris, Gomphonema neoapiculatum, Gomphonema tumens, Pinnularia fusana, Pinnularia parvulissima, Punctastriata lancettula, Sellaphora capitata, and Staurosira dimorpha. Eleven taxa could not be identified to the species level. All identified diatoms are illustrated by high-quality scanning electron microphotographs, reference taxonomic data, dimensions of the observed cells, and information on ecology and distribution are included.

Keywords:

• Bacillariophyceae
• Bacillariophyta
• benthic diatoms
• fossil diatoms
• freshwater
• ultrastructure

Acknowledgments

Core samples were obtained from the Nakdonggang National Institute of Biological Resources (NNIBR) and the Korea Institute of Geoscience and Mineral Resources (KIGAM). We thank Honorary Prof. Jin Hwan Lee for the assistance with the SEM observations at Sangmyung University. We also thank the anonymous reviewers for their helpful comments.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the NNIBR (Nakdonggang National Institute of Biological Resources) [grant number NNIBR201901104/NNIBR202001104].