Distribution pattern of zooplankton in the han river estuary with respect to tidal cycle

Youn, Seok-Hyun; Choi, Joong-Ki

doi:10.1007/bf03020694

Cited by 19 publications

(13 citation statements)

References 4 publications

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“…The daily EPR of A. ohtsukai was quantified at seven salinities (10,15,20,25,27,30, and 33 ± 1 psu) and five temperatures (10,15,20,25, and 30 ± 1 • C). In previous studies, the critical points of water temperature and salinity of A. ohtsukai have been reported to be 10-30 • C and 4-30 psu, respectively (Youn and Choi, 2008;Park et al, 2015). Since eggs incubated for 48 h at low salinity could burst and be erroneously identified as hatching eggs, the low salinity treatment was not used (Holste et al, 2004).…”

Section: Egg Production Ratementioning

confidence: 99%

Effects of Temperature and Salinity on Egg Production, Hatching, and Mortality Rates in Acartia ohtsukai (Copepoda, Calanoida)

et al. 2021

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The calanoid copepod Acartia ohtsukai predominates the estuarine and coastal waters of East Asia during summer. Its occurrence characteristics confer it with good potential as live prey for fish larvae through mass culture. To investigate the effect of temperature and salinity combinations on its egg production rate (EPR), hatching success (HS), and mortality rate, experiments were undertaken and repeated three times for combinations of five temperatures (10, 15, 20, 25, and 30°C) and seven salinities (10, 15, 20, 25, 27, 30, and 33 psu). EPR and HS were highest at temperatures of 25 and 30°C, respectively, with a salinity of 27 psu. Mortality rate was highest at 10°C in almost all salinity gradients, whereas it was lower at water temperature and salinity ranges of 20–30°C and 20–30 psu, respectively. These findings indicate that A. ohtsukai can inhabit wide ranges of water temperatures and salinities, and that the optimized condition for mass culture is a combination of water temperature of 25°C and salinity of 27 psu.

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Section: Egg Production Ratementioning

confidence: 99%

Effects of Temperature and Salinity on Egg Production, Hatching, and Mortality Rates in Acartia ohtsukai (Copepoda, Calanoida)

et al. 2021

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“…An important aspect of the high variability of the tidal water area is related to the short-time effects of a tidal cycle on the physicochemical characteristics and biological conditions of the water (Montani et al, 1998;Chauhan et al, 2009). The rise and ebb of the water surface during flood tides dramatically influence the master variables of the water column, such as suspended particulate matter and redox potential, as well as the abundance of planktons (Dale and Prego, 2003;Youn and Choi, 2008;Gao et al, 2008). The extent of such variations will vary greatly depending on the spring and neap tide state or the tidal amplitude (Uncles and Stephens, 1996;Hatje, 2003).…”

Section: Introductionmentioning

confidence: 99%

Artificial tide generation and its effects on the water environment in the backwater of Three Gorges Reservoir

Sha

Wei

et al. 2015

Journal of Hydrology

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“…Indigenous estuarine species in Korean estuaries are distributed by different geographic factors, such as tidal currents. Previous studies have focused on unexceptional Korean estuaries and revealed that the dominant species was determined by water temperature and salinity gradients [15][16][17][18][19][20]. However, unlike the other estuaries, Doam Bay has distinct geographical features.…”

Section: Introductionmentioning

confidence: 99%

Environmental Factors Affecting the Spatiotemporal Distribution of Copepods in a Small Mesotidal Inlet and Estuary

Seo

Kim

Lee³

et al. 2021

Diversity

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To understand the environmental factors affecting the spatiotemporal distribution of copepods, sampling was conducted seasonally in a small mesotidal inlet and estuary located in Doam Bay of southwestern Korea. The study area was divided seasonally into two or three station groups (estuarine, mixed, and coastal) by a cluster analysis and non-metric multidimensional scaling based on copepod abundance. Acartia forticrusa, A. hudsonica, A. ohtsukai, Paracalanus parvus s. l., Pseudodiaptomus marinus, Tortanus derjugini, T. dextrilobatus, T. forcipatus, Oithona spp., and harpacticoids were important species for grouping the stations. The spatiotemporal distribution of the first two species was restricted to the estuarine area in summer and significantly correlated with temperature, salinity, and chlorophyll-a concentration. The distribution of other brackish species, such as T. derjugini and T. dextrilobatus, significantly correlated with temperature, salinity, and chlorophyll-a concentration. In contrast, A. hudsonica significantly correlated with dinoflagellate density and turbidity in winter, in addition to the abovementioned environmental factors. Acartia hudsonica also maintained a large population in the estuarine area in fall and winter, and its distribution extended across the entire bay in spring. Other coastal species occurred in all areas and did not significantly correlate with environmental factors. Therefore, brackish species in the study area may have developed seasonally different behaviors to sustain their populations.

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Distribution pattern of zooplankton in the han river estuary with respect to tidal cycle

Cited by 19 publications

References 4 publications

Effects of Temperature and Salinity on Egg Production, Hatching, and Mortality Rates in Acartia ohtsukai (Copepoda, Calanoida)

Effects of Temperature and Salinity on Egg Production, Hatching, and Mortality Rates in Acartia ohtsukai (Copepoda, Calanoida)

Artificial tide generation and its effects on the water environment in the backwater of Three Gorges Reservoir

Environmental Factors Affecting the Spatiotemporal Distribution of Copepods in a Small Mesotidal Inlet and Estuary

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