Literature Survey on the Phytoplankton Flora in the Nakdong River Estuary, Korea

Abstract

Long-term and systematic monitoring of phytoplankton is important, as phytoplankton serve as indicators of water quality status in aquatic environments. In the present study, the plankton community structure of the Nakdong River estuary over the past 30 years was investigated by literature survey to provide references for the occurrence of planktonic species. A total of 876 species from 18 taxonomic lineages were reported and, among them, 569 species were identified to occur seasonally at the Mulgeum, Seonam and Eulsukdo sites. Diatoms and chlorophytes were dominant in the microscopic studies. The 54 species at the Mulgeum and the 96 species at the Eulsukdo sites have not been reported since the river barrage construction in 1987. The majority of reports speculate that there has been a change in the aquatic environment, particularly the plankton community structure, due to operation of a river barrage since 1987.

Variations in the Temporal and Spatial Distribution of Microalgae in Aquatic Environments Associated with an Artificial Weir

“…The Nakdonggang River is the largest river in the Republic of Korea, with a length of 510 km and a watershed area of 23,384 km 2 [1,2]. The upper stream flows into the western part of the Banbyeoncheon Stream in Andong-si, and several tributaries, such as the Naeseongcheon Stream and the Yeonggang River (the first tributary of the Nakdonggang River) near the Hamchang Stream, gather to flow southward through Sangju, Sunsan, and Daegu [1,2]. The Nakdonggang River is important since it has become a major source of agricultural, public, and industrial water near the metropolis [1,2].…”

“…The upper stream flows into the western part of the Banbyeoncheon Stream in Andong-si, and several tributaries, such as the Naeseongcheon Stream and the Yeonggang River (the first tributary of the Nakdonggang River) near the Hamchang Stream, gather to flow southward through Sangju, Sunsan, and Daegu [1,2]. The Nakdonggang River is important since it has become a major source of agricultural, public, and industrial water near the metropolis [1,2].…”

“…Microalgae are primary producers in aquatic ecosystems and are used as indicators for underwater environments owing to the responsiveness of communities to changes in water quality [7][8][9][10][11] and physicochemical factors [1]. In addition, when pollution increases, certain species may cause oxygen depletion and fish death [12].…”

Relations of Nutrient Concentrations on the Seasonality of Algal Community in the Nakdong River, Korea

“…Richmond and Vonshak (1978) 은 Spirulina sp. 배양실험에서 혼합속도를 15 cm s 그러나 그 동안 낙동강의 조류 군집구조 변화관련 연구는 중･하류에 집중되어 왔다 (Chung et al, 1994;Joung et al, 2013;Moon et al, 2001;Son, 2013a;Son, 2013b). 최근의 연구로는 Yu et al (2014) (Haney and Hall, 1972) 으로 즉시 고정한 후 실험실에서 계수 및 동정하였다.…”

Survey on Lake Environments in the Yeongsan and Seomjin River Basins - Based on 10 lakes such as Hadong and Sangsa -

“…특 히 상수원으로 이용되고 있는 영산강과 섬진강 수계의 주요 호소인 주암호와 동복호에서는 매년 여름철에 남조류와 와 편모조류 그리고 녹조류가 수화(water-blooms)를 형성하는 빈도가 잦아지면서 수질 악화가 우려되고 있고, 상수원의 미생물학적 지표인 대장균군의 조사에서도 강우에 따른 분 원성의 유역오염이 맞물리면서 미생물학적 수질이 특정 시 기에 높아지는 양상을 보이고 있다 (Choi et al, 1998;Chung et al, 1994;Lee, 1999) (Fig. 4).…”