Resting stages of freshwater algae from surface sediments in Paldang Dam Lake, Korea
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Title
- Resting stages of freshwater algae from surface sediments in Paldang Dam Lake, Korea
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Author(s)
- Li, Zhun; Shin, Hyeon Ho; Lee, Taehee; Han, Myung-Soo
- KIOST Author(s)
- Shin, Hyeon Ho(신현호); Lee, Tae Hee(이태희)
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Alternative Author(s)
- LIZHUN; 신현호; 이태희
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Publication Year
- 2015
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Abstract
- Although the studies on marine cysts are quite frequent, information on resting stages of freshwater algae are rather scarce. The present study focused on the identification of resting-stage algae from freshwater sediments in Paldang Dam Lake, an important source of water for South Korea. We examined the morphological characteristics of resting-stage specimens and identified them by germination experiments or DNA analysis. Surface sediment samples were collected from 12 sites in Paldang Dam Lake from July 2009 to June 2010. Thirty-five resting stage morphotypes were identified: 19 chlorophytes, 6 dinoflagellates, 5 diatoms, 2 cyanobacteria, 2 euglenoids and 1 cryptophyte. Resting-stage and vegetative cells of five chlorophyte morphotypes could not be identified by morphology. These specimens were identified by molecular sequence analysis based on the nuclear-encoded SSU rDNA sequences of Polyedriopsis, Oogamochlamys and Chlamydomonas. Our samples included resting-stage of the potentially toxic species Cylindrospennum stagnale, the first recorded sighting in Korea. Resting-stage assemblages were dominated by diatoms, which ranged from 560 to 2750 cells g(-1). Resting-stage of diatoms and cyanobacteria were abundant along the eastern shore toward the southern part of Paldang Dam Lake, where there have been periodic algal blooms.
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ISSN
- 0029-5035
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/2618
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DOI
- 10.1127/nova_hedwigia/2015/0284
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Bibliographic Citation
- NOVA HEDWIGIA, v.101, no.3-4, pp.475 - 500, 2015
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Publisher
- GEBRUDER BORNTRAEGER
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Subject
- DINOFLAGELLATE CYSTS; AKINETE DIFFERENTIATION; VEGETATIVE POPULATION; GERMINATION; CRYPTOPHYCEAE; SEQUENCES; RESERVOIR; PATTERNS; ECOLOGY; LIGHT
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Keywords
- resting-stage algae; morphology; freshwater; surface sediment
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Type
- Article
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Language
- English
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Document Type
- Article
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