On Conditions of Phytoplankton Blooms in the Coastal Waters of the North-Western East/Japan Sea

Zuenko, Yu. I.; Селина, М. С.; Стоник, И. В.

doi:10.1007/bf03022403

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…Thanks to high water, the river mouth region bears a great amount of nutrients and freshening invokes a steady stratification of water. Mass "bloom" of phytoplankton in Amur Bay during high water was also recorded previously [5,32]. As sedimentation is of a seasonal nature, apparently, it is necessary to expect seasonal variability of the production caused by seasonal variability of the Razdol'naya River flow.…”

Section: Methods and Resultsmentioning

confidence: 86%

Carbonate system of the Razdolnaya River estuary (Amur Bay, Sea of Japan)

Tishchenko

Wong²,

Volkova

et al. 2005

Russ J Mar Biol

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Rivers can be considered as arteries, which bring suspended and dissolved matter of organic and inorganic origin to the ocean. The characteristics and properties of the matter depend on the climatic, geographical, and geological features of water-catchment area and on human activity. Natural and anthropogenic components of load material induce intense biogeochemical processes in the region of mixing of river and seawater. According to the modern concept of the geochemical "river-sea" barrier, the river flow is not a simple mechanical delivery of matter from land to ocean. According to Lisitsyn [7], the main accumulation of sedimentary material of the Earth occurs in that geographically small area. He considered the estuaries and deltas of rivers of the world as the first global level of avalanche sedimentation. Biological processes, the intensity of which in estuaries is several times higher than in adjacent areas of the sea, are rather significant for substance flows. It is quite apparent that carbon dioxide is a key factor, as CO 2 is the basis of construction of organic matter and is extracted from the environment during photosynthesis. At the same time, it is excreted in the environment during biological oxidation of suspended and dissolved forms of organic carbon. Moreover, carbon dioxide is a gas influential the greenhouse effect, which affects the climate of the planet. The intensity of processes occurring in estuaries with the participation of carbon dioxide determine to a significant extent the global cycling of carbon [15,30]. One may support Cai and Wang's opinion [15] that the number of publications dedicated to study of the carbonate system of estuaries does not correspond to the relevance of the problem. The existing situation, in our opinion, is caused by the presence of methodological problems related to measurement and calculation of the parameters of the carbonate system of estuaries. Now techniques [17] enabling sufficiently high reproducibility of measurement of all four parameters of the carbonate system of seawater have been developed: DIC-dissolved inorganic carbon, pCO 2 -partial pressure of carbon dioxide, TA-the total alkalinity, and pH. The concentration constants of carbonic acid for the range of salinity of 30-40‰ were measured reliably enough [25]. Nevertheless, there are some unsolved methodological problems in studying the carbonate system of seawater, first of all, the problems of intercalibration of measurements of pH and alkalinity [26], the intrinsic coherence of the four gauged parameters and the constants of carbonic acid [23], and precise pCO 2 measurements in discrete assays. The given problems are essentially complicated when a study concerns riverine waters and areas of riverine and seawater mix [20]. In this case, standard methods and tech-BIOGEOCHEMISTRY Abstract -Two methods, the total alkalinity measurement by Bruevich [4] and pH measurement in a cell without liquid junction [11], were suggested for study of the carbonate system of estuaries. Based on new measurements...

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Section: Methods and Resultsmentioning

confidence: 86%

Carbonate system of the Razdolnaya River estuary (Amur Bay, Sea of Japan)

Tishchenko

Wong²,

Volkova

et al. 2005

Russ J Mar Biol

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“…Yamatogi et al [17] pointed out that the propagation characteristics of phytoplankton differ from area to area and that specific causative species tend to predominate in a specific season every year within the inner bay area. Zuenko et al [20] also assessed the conditions of phytoplankton blooms relative to two environmental factors: sea surface temperature (SST) and mixed layer depth. They suggested that the species succession of blooms from diatoms to dinoflagellates is induced via the blockage of nutrient supply from the seabed during periods of SST increase and strengthened stratification.…”

Section: Relationship Between Environmental Factors and Outbreaks Of mentioning

confidence: 99%

Characteristics of the marine environment and algal blooms in Gamak Bay

et al. 2009

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This study was conducted to gain insight into the characteristics of algal blooms in relation to the marine environment of Gamak Bay. From the first known occurrence of algal blooms in 1984 until 2006, 23 causal species have been identified, the most common ones being Prorocentrum sp., Cochlodinium polykrikoides, Chaetoceros sp., Skeletonema costatum, and Heterosigma akashiwo. A principal component analysis indicated that blooms of these species develop under different conditions in terms of water temperature, salinity, precipitation, and insolation. Field data showed Cochlodinium polykrikoides to be favored by high temperatures and to be euryhaline, whereas Skeletonema costatum appeared to be eurythermal and euryhaline. Prorocentrum sp. and Chaetoceros sp. appeared to be stenothermal and stenohaline. Finally, Heterosigma akashiwo appeared at the lowest temperature and highest salinity of the five species and was classified here as stenothermal and stenohaline.

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“…The strongest bloom occurs during spring season while the weaker blooms appears in fall. Both spring and fall blooms are mainly caused by the massive growth of diatoms [3,4,33,35,36]. During spring and fall blooms, the size distribution of phytoplankton cells would shift from smaller to larger size due to the rapid growth of diatoms.…”

Section: Spatial and Temporal Variability Of The Poc:chl-amentioning

confidence: 99%

Estimation of the Particulate Organic Carbon to Chlorophyll-a Ratio Using MODIS-Aqua in the East/Japan Sea, South Korea

et al. 2020

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In recent years, the change of marine environment due to climate change and declining primary productivity have been big concerns in the East/Japan Sea, Korea. However, the main causes for the recent changes are still not revealed clearly. The particulate organic carbon (POC) to chlorophyll-a (chl-a) ratio (POC:chl-a) could be a useful indicator for ecological and physiological conditions of phytoplankton communities and thus help us to understand the recent reduction of primary productivity in the East/Japan Sea. To derive the POC in the East/Japan Sea from a satellite dataset, the new regional POC algorithm was empirically derived with in-situ measured POC concentrations. A strong positive linear relationship (R2 = 0.6579) was observed between the estimated and in-situ measured POC concentrations. Our new POC algorithm proved a better performance in the East/Japan Sea compared to the previous one for the global ocean. Based on the new algorithm, long-term POC:chl-a ratios were obtained in the entire East/Japan Sea from 2003 to 2018. The POC:chl-a showed a strong seasonal variability in the East/Japan Sea. The spring and fall blooms of phytoplankton mainly driven by the growth of large diatoms seem to be a major factor for the seasonal variability in the POC:chl-a. Our new regional POC algorithm modified for the East/Japan Sea could potentially contribute to long-term monitoring for the climate-associated ecosystem changes in the East/Japan Sea. Although the new regional POC algorithm shows a good correspondence with in-situ observed POC concentrations, the algorithm should be further improved with continuous field surveys.

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On Conditions of Phytoplankton Blooms in the Coastal Waters of the North-Western East/Japan Sea

Cited by 11 publications

References 10 publications

Carbonate system of the Razdolnaya River estuary (Amur Bay, Sea of Japan)

Carbonate system of the Razdolnaya River estuary (Amur Bay, Sea of Japan)

Characteristics of the marine environment and algal blooms in Gamak Bay

Estimation of the Particulate Organic Carbon to Chlorophyll-a Ratio Using MODIS-Aqua in the East/Japan Sea, South Korea

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