Relationship between phytoplankton community and water parameters in planted fringing mangrove area in South China

AbstractIn this work, we analyze environmental (physical and chemical) and biological (phytoplankton) data obtained in Sanya Bay during four cruises, carried out in January, April, August, and October. The main objective of this study was to identify the key environmental factors affecting phytoplankton structure and bacterioplankton in the bay. Results suggest that spatial variations in the phytoplankton community and bacterioplankton biomass are the result of nutrients. Temporal variation in the abundance of bacterioplankton and phytoplankton are affected by a combination of physical and biological factors, such as temperature and nutrients. The silicate, phosphate, and nitrogen phytoplankton require for growth may be co-limited. Monsoon winds (a southwestern monsoon during summer and a northeastern monsoon during winter) play important roles in controlling the phytoplankton community and bacterioplankton abundance in Sanya Bay, northern South China Sea.

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Variations in the Physicochemical Water Parameters and Phytoplankton Community in Coastal Water of Kudat, Sabah, Malaysia

Journal of Geoscience and Environment Protection ◽

10.4236/gep.2021.97006 ◽

2021 ◽

Vol 09 (07) ◽

pp. 86-99

Author(s):

Mezzy Rynee Romin ◽

Sujjat Al Azad ◽

Ejria Saleh

Keyword(s):

Coastal Water ◽

Phytoplankton Community ◽

Water Parameters

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Variation of phytoplankton absorption coefficients in the northern South China Sea during spring and autumn

Biogeosciences Discussions ◽

10.5194/bgd-4-1555-2007 ◽

2007 ◽

Vol 4 (3) ◽

pp. 1555-1584 ◽

Cited By ~ 6

Author(s):

J. Wu ◽

H. Hong ◽

S. Shang ◽

M. Dai ◽

Z. Lee

Keyword(s):

South China Sea ◽

South China ◽

Phytoplankton Community ◽

Northern South China Sea ◽

Outer Shelf ◽

Pearl River ◽

China Sea ◽

Shelf Slope ◽

Phytoplankton Absorption ◽

The Pearl River

Abstract. We examined the temporal and spatial variabilities of phytoplankton absorption coefficients (αphλ)) and their relationships with physical processes in the northern South China Sea from two cruise surveys during spring (May 2001) and late autumn (November 2002). A large river plume induced by heavy precipitation in May stimulated a phytoplankton bloom on the inner shelf, causing significant changes in the surface water in αph values and B/R ratios (αph(440)/αph(675)). This was consistent with the observed one order of magnitude elevation of chlorophyll α and a shift from a pico/nano dominated phytoplankton community to one dominated by micro-algae. At the seasonal level, enhanced vertical mixing due to strengthened northeast monsoon in November has been observed to result in higher surface αph(675) (0.002–0.006 m−1 higher) and less pronounced subsurface maximum on the outer shelf/slope in November as compared that in May. Measurements of αph and B/R ratios from three transects in November revealed a highest surface αph(675) immediately outside the mouth of the Pearl River Estuary, whereas lower αph(675) and higher B/R ratios were featured in the outer shelf/slope waters, demonstrating the respective influence of the Pearl River plume and the oligotrophic nature of South China Sea water. The difference in spectral shapes of phytoplankton absorption (measured by B/R ratios and bathochromic shifts) on these three transects infers that picoprocaryotes are the major component of the phytoplankton community on the outer shelf/slope rather than on the inner shelf. In addition, a regional tuning of the phytoplankton absorption spectral model (Carder et al., 1999) demonstrated a greater spatial variation than seasonal variation in the lead parameter a0(λ). These results suggest that phytoplankton absorption properties in a coastal region such as the northern South China Sea are complex and region-based parameterization is mandatory in order for remote sensing algorithms.

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