Species-Specific Productivity of<i>Cryptomonas ovata</i>(Cryptophyceae) in the Pal'tang Reservoir, Korea

Han, Moonsik; Kim, Young‐Ok; Yi, Dong-Seok; Hong, Sung-Su

doi:10.1080/02705060.2002.9663930

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…Some dinoflagellates cysts formed to survive unfavorable cold winter and the cysts germinated to vegetative population when water temperature increased in spring (Popovsky and Pfiester 1990). According to our observation, the primary dominant species P. niei was capable of living at a minimum temperature of 5 • C, an optimum temperature of 15 • C to 20 • C and a maximum temperature of 30 • C. Diatoms and Cryptophyta also displayed plentiful species and abundance in spring (Qi et al 1995;Han et al 2002;Barone and Naselli-Flores 2003).…”

Section: Discussionmentioning

confidence: 91%

Phytoplankton variation and its relationship with the environment in Xiangxi Bay in spring after damming of the Three-Gorges, China

Zhou

Zhao

et al. 2010

Environ Monit Assess

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Following the completion of the ThreeGorges Dam, there was a strong spring phytoplankton bloom in Xiangxi Bay of Three-Gorges Reservoir. However, our knowledge of relationship between spring phytoplankton bloom and environmental factors was still limited. In this study, phytoplankton species composition, biomass, chlorophyll a concentration and environmental factors at two sampling sites in Xiangxi Bay were investigated during 25 March to 18 May 2007. The Xiangxi Bay was eutrophic with the lowest values of total nitrogen and total phosphorus being 0.80 and 0.07 mg/L, respectively. A total of 66 algal taxa belonging to seven phyla and 45 genera were identified. Peridiniopsis niei Liu was the most abundant species which preferred standing water. Canonical correspondence analysis and correlation analysis revealed that nitrate was significantly associated with phytoplankton growth. The phytoplankton chlorophyll a concentration was correlated significantly negatively with nitrate concentration, and nitrate concentration was very low during bloom periods. Heavy rainfall was the main reason of phytoplankton chlorophyll a concentration and biomass decreasing and blooms disappearing. In addition, heavy rainfall also brought more nitrate into the Bay which provided sufficient nitrogen source for blooms occurring again.

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Section: Discussionmentioning

confidence: 91%

Phytoplankton variation and its relationship with the environment in Xiangxi Bay in spring after damming of the Three-Gorges, China

Zhou

Zhao

et al. 2010

Environ Monit Assess

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“…C. ovata and Chlamydomonas sp. tolerate low temperatures (Arvola et al 1991;Han et al 2002;Ki et al 2006) and are frequently found in eutrophic waters (Lessmann et al 2003). N. subminuscula, which is an important bio-indicator of eutrophicated water, also possess this tolerance (Gómez and Licursi 2001).…”

Section: Discussionmentioning

confidence: 98%

Testing addition of Pseudomonas fluorescens HYK0210-SK09 to mitigate blooms of the diatom Stephanodiscus hantzschii in small- and large-scale mesocosms

et al. 2009

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An algicidal bacterium Pseudomonas fluorescens HYK0210-SK09 (SK09) was applied to a natural bloom of Stephanodiscus hantzschii using a small-scale mesocosm (SM) and a large-scale mesocosm (LM) to clarify the algicidal effects and evaluate the response of the planktonic community and environments. When SK09 cells were inoculated at a final concentration of 5×10 6 cells mL −1 , the abundance of S. hantzschii decreased significantly by 95% in SM and 85% in LM. The microcosm in the laboratory revealed that the abundance of Pseudomonas increased rapidly after inoculation with a corresponding decrease in the S. hantzschii population. Nutrient concentrations increased following the decline in the diatom cells. The abundances of nondominant species such as Chlamydomonas, Cryptomonas, and Navicula increased slightly with increased nutrient concentrations. The abundance of heterotrophic protists also increased significantly due to utilization of SK09 as food. The present study demonstrates that SK09 is an effective biocontrol agent for natural S. hantzschii bloom, and grazing pressure plays a crucial role in the successful application of algicidal bacteria to natural environments.

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Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method

Xu¹,

Wang³

et al. 2021

Water Quality Research Journal

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The prediction of the influence of reservoir impoundment on water quality and phytoplankton community is the basis of ecological compensation or restoration. The aim of the current study was to predict the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method. The Huangjinxia Reservoir under construction on the Han River was selected as the research object. The space-time substitution method indicated that the average values of the total phosphorus (TP) and ammonia (NH4+-N) increased from 0.049 and 0.279 mg L−1 to 0.139 and 1.132 mg L−1, respectively, after reservoir impoundment. The percentage of diatom biomass exceeded 95% before the reservoir impoundment. However, it was gradually decreased to 75% after the reservoir impoundment. Meanwhile, the biomass of Chlorophyta, Cryptophyta and Pyrrophyta increased significantly, accounting for 32, 20 and 13% of the total biomass, respectively, after reservoir impoundment. Cynodon dactylon (65.3%), Polygonum hydropiper (51.7%) and Aster subulatus (50.3%) were the dominant shoreline vegetation before the reservoir impoundment, whereas after the reservoir impoundment, the dominant species shifted to Alternanthera philoxeroides (62.3%), Lobelia chinensis (55.7%) and C. dactylon (53.9%). Our results suggested that the percentage of bloom-forming phytoplankton would gradually increase after the reservoir impoundment. In addition, A. philoxeroides, C. dactylon and L. chinensis would be the plants suitable for living in the shoreline of reservoirs in this area.

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Species-Specific Productivity ofCryptomonas ovata(Cryptophyceae) in the Pal'tang Reservoir, Korea

Cited by 4 publications

References 18 publications

Phytoplankton variation and its relationship with the environment in Xiangxi Bay in spring after damming of the Three-Gorges, China

Phytoplankton variation and its relationship with the environment in Xiangxi Bay in spring after damming of the Three-Gorges, China

Testing addition of Pseudomonas fluorescens HYK0210-SK09 to mitigate blooms of the diatom Stephanodiscus hantzschii in small- and large-scale mesocosms

Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method

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