Phytoplankton pigments and functional community structure in relation to environmental factors in the Pearl River Estuary

Chai, Chao; Jiang, Tao; Cen, Jingyi; Ge, Wei; Lü, Songhui

doi:10.1016/j.oceano.2016.03.001

Cited by 35 publications

(22 citation statements)

References 42 publications

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“…nutrients, light, turbidity, etc.) as reported by Bužančić et al (2016) and Chai et al (2016). Results indicated that diatom to dinoflagellate ratios and pigment composition varied throughout the year.…”

Section: Resultssupporting

confidence: 69%

“…Especially dinoflagellates (stress-tolerant) and flagellates are adapted to survival in low nutrient stable waters (Holligan, 1987;Margalef, 1978). Similarly, an increase in microphytoplankton but decrease in nanophytoplankton and picophytoplankton was reported from the Pearl River estuary with high nutrient concentration (Chai et al, 2016). On the other hand, dinoflagellates were found to be the most abundant group in the regions where were exposed to anthropogenic influence and generally more abundant in the warmer part of the year along the eastern Adriatic coast (Bužančić et al, 2016).…”

Section: Discussionmentioning

confidence: 63%

“…Experiments carried out in the open waters of the Black Sea also revealed that silicate was not a limiting nutrient of phytoplankton growth in natural populations (Yilmaz et al, 2006). Chai et al (2016) reported that high N:P ratio suggested a potential phosphorus limitation in their study. They also found that nutrients were the most important environmental factors which affect the distribution of phytoplankton in the Pearl River estuary.…”

Section: Discussionmentioning

confidence: 82%

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Spatio-temporal pattern of phytoplankton and pigment composition in surface waters of south-eastern Black Sea

2017

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Section: Resultssupporting

confidence: 69%

Section: Discussionmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 82%

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Spatio-temporal pattern of phytoplankton and pigment composition in surface waters of south-eastern Black Sea

2017

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“…Phytoplankton indicators based on these pigments have been proposed in sustainable water quality and eutrophication assessment in international policies [19,20]. Roy et al [21] and Chai et al [22] reported that photosynthetic marker pigments can be used as indicators of trophic physiological conditions for phytoplankton communities, which can be affected by environmental conditions and trophic status in southwest coast of India and the Pearl River estuary, respectively. Gibb et al [23] and Barlow et al [15] reported that PPCs dominate in low productivity waters, whereas PSCs dominate in high productivity waters in the Atlantic Ocean.…”

Section: Introductionmentioning

confidence: 99%

Comparison of HPLC Pigment Analysis and Microscopy in Phytoplankton Assessment in the Seomjin River Estuary, Korea

2020

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The distribution of microalgal species in estuaries shows marked gradients because of the mixing of marine and fresh water during tidal exchanges. To assess the spatio-temporal distribution of phytoplankton in the Seomjin River estuary (SRE), Korea, we investigated the seasonal phytoplankton communities along a salinity gradient in the estuary using both high performance liquid chromatography (HPLC) pigment analysis and light microscopy. Both types of analysis indicated that marine planktonic diatoms generally dominated at downstream sites having salinities >10, whereas freshwater species dominated at upstream sites having salinities <5. High levels of the pigments fucoxanthin and alloxanthin were found at upstream sites in the SRE in late spring. During summer, relatively high levels of the pigment peridinin were present in downstream areas of the SRE, and relatively high levels of diatoms occurred in upstream areas. In autumn, small Cryptomonas species were found in high abundance based on microscopic analysis, while CHEMTAX analysis of photosynthetic pigments showed relatively high concentrations of the diatom pigment fucoxanthin, implying the co-occurrence of a small unidentified phytoplankton. During winter, when the estuarine waters were well mixed, both the microscopic and CHEMTAX analyses showed that diatoms dominated at most stations. Seasonal and horizontal gradients in environmental conditions were clearly influenced by the salinity and nutrient loadings, especially the nitrate+nitrite and silicate concentrations. In particular, the ratio of photoprotective carotenoid pigments (PPCs) to photosynthetic carotenoid pigments (PSCs) was relatively low during all four seasons. This was predominately because of the high productivity of diatoms, which have a very low ratio of PPCs to PPSs. The SRE is a favorable habitat for diatoms because it is a high turbulence area having rapid water movement as a result of tidal changes. Overall, there was consistency in the data derived from the microscopy and chemotaxonomy analyses, suggesting that both methods are useful for analysis of the phytoplankton community structure in this complex estuarine and coastal water ecosystem.

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“…The biological indicators are commonly used to assess the water quality detecting changes in the biotic structure of the communities over spatial and temporal scales (Katsiapi et al, 2016). Phytoplankton plays a crucial role in the aquatic environment because they are the dominant primary producers and balance the overall food web dynamics (Katz et al, 2004;Chai et al, 2016). In addition to holding ecological services, biomass, composition, and community structure of phytoplankton can be considered an efficient bio-indicator of water quality as their distribution strongly correlates with several factors (e.g., physical, chemical, and biological) as well as interactions among them (Paerl et al, 2003;.…”

Section: Introductionmentioning

confidence: 99%

Structure of microphytoplankton community and environmental variables in a macrotidal estuarine complex, São Marcos Bay, Maranhão - Brazil

et al. 2018

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Cavalcanti et al.: Microphytoplankton of a macrotidal estuarine complex 283 Structure of microphytoplankton community and environmental variables in a macrotidal estuarine complex, São Marcos Bay, Maranhão -BrazilSão Marcos Bay is an estuarine complex with semidiurnal tides that can reach more than 7 m during equinoctial spring tides. It is situated in the second largest Brazilian coastline and is subjected to continuous human activities holding an important port complex of Latin America. In order to contribute to the knowledge about the structure of the phytoplankton in a macrotidal systems, this study aims to evaluate the phytoplankton community and its relationship with environmental conditions in the São Marcos Bay. Five surveys in 2010 and 2011 were carried out on four sampling points during the rainy and dry seasons. Samples were taken during the flood and ebb phases at neap tides. Hydrological parameters were correlated with biological data (phytoplankton composition, abundance and biomass) using statistical analysis. The phytoplankton biomass (chlorophyll a) characterized the bay as quite productive (10.43±7.62 mg m -3 ) with the nanophytoplankton as the dominant fraction. Seasonal variation was observed in phytoplankton abundance with higher values (34,262±18,422 cells L -1 ) in the rainy season. Diatoms were the most important phytoplankton group, pointing out Nitzschia sp., Diploneis weissflogii and Synedra sp. as the dominant species. This study revealed that the composition of phytoplankton community was mainly influenced by the local dynamics, governed by macrotides, and precipitation regime that mostly contributed to the seasonal fluctuations of the environmental conditions, such as salinity, dissolved oxygen, and nutrients.

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Phytoplankton pigments and functional community structure in relation to environmental factors in the Pearl River Estuary

Cited by 35 publications

References 42 publications

Spatio-temporal pattern of phytoplankton and pigment composition in surface waters of south-eastern Black Sea

Spatio-temporal pattern of phytoplankton and pigment composition in surface waters of south-eastern Black Sea

Comparison of HPLC Pigment Analysis and Microscopy in Phytoplankton Assessment in the Seomjin River Estuary, Korea

Structure of microphytoplankton community and environmental variables in a macrotidal estuarine complex, São Marcos Bay, Maranhão - Brazil

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