Journal of Ecology and Environment

pISSN 2287-8327 eISSN 2288-1220

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Published online April 12, 2022
https://doi.org/10.5141/jee.22.004

Journal of Ecology and Environment (2022) 46:10

© The Ecological Society of Korea.

Diversity of phytoplankton from the Nakdong River, South Korea: Euglenophytes

Han Soon Kim *† and Jae Hak Lee

Department of Biology, Kyungpook National University, Daegu 41566, Republic of Korea

Correspondence to:Han Soon Kim
E-mail kimhsu@knu.ac.kr

Han Soon Kim and Jae Hak Lee contributed equally to this work.

Received: January 10, 2022; Revised: February 28, 2022; Accepted: March 8, 2022

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Abstract

Background: Many investigations on phytoplankton from the Nakdong River carried out. However, since the weirs were constructed, only changes in phytoplankton biomass and dominant species have been restrictively studied in phytoplankton investigations in the Nakdong River. Added to this, any investigation on the phytoplankton flora has not been done in the Nakdong River. The aim of this study is to elucidate the characteristics of phytoplankton communities in the Nakdong River with the weirs built in it.
Results: We observed a total of 103 taxa of Euglenophytes belonging to 8 genera from middle-lower part of the Nakdong River. The genus Trachelomonas was the most abundant group making up 40 taxa, followed Lepocinclis (20), Phacus (17), Strombomonas (14), Euglena (5), Colacium (3), Monomorphina (3) and Menoideum (1). Among them, a total of 22 taxa including Colacium (1), Lepocinclis (8), Phacus (4), Strombomonas (4) and Trachelomonas (5) were reported for the first time in Korea, and 86 taxa including those new to Korea were first recorded in the Nakdong River. All the species are illustrated with photomicrographs, and new to Korean species briefly discussed with regard to their taxonomy together with photomicrographs.
Conclusions: The present study, a total of 22 taxa including one species of Colacium, 8 taxa of Lepocinclis, 4 taxa of Phacus, 4 taxa of Strombomonas and 5 taxa of Trachelomonas were reported for the first time in Korea, and 86 taxa including those new to Korea were first recorded in the Nakdong River.

Keywords: Euglenophytes, phytoplankton diversity, Nakdong River, photomicrographs

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Journal of Ecology and Environment

pISSN 2287-8327 eISSN 2288-1220