Imbalanced phytoplankton C, N, P and its relationship with seawater nutrients in Xiamen Bay, China

Lu, Xiaoqian; Wang, Yu; Chen, Bin; Ma, Zhiyuan; Chen, Guangcheng; Ge, Feiyang; An, Shenqun; Han, Wenxuan

doi:10.1016/j.marpolbul.2022.114566

Cited by 12 publications

(1 citation statement)

References 68 publications

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“…The annual variation range was 23.78~124.05, resembling that of Bohai Bay (20-133) [57]. This situation is comparable to Xiamen Bay, which may be influenced by the high N/P ratio in urban sewage discharges, leading to an imbalance between phosphorus and nitrogen in the water bodies receiving these discharges (reclaimed water) [58]. The potential eutrophication results in Daya Bay from 2009 to 2015 were mostly lower than 16, suggesting a change in N/P in the sea area in recent years.…”

Section: Factors Influencing Temporal and Spatial Variations In Nutri...mentioning

confidence: 68%

Dissolved Inorganic Nutrient Biogeochemistry in an Urbanized Coastal Region: A Study of Dapeng Cove, Shenzhen

Tong,

Chen,

Zhang

2023

Sustainability

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Dissolved inorganic nutrients are pivotal in maintaining the material and energy balance of marine ecosystems, impacting the survival and dynamic succession of marine organisms. To gain a deeper understanding of the source and sink characteristics of dissolved inorganic nutrients in bays affected by human activities and to elucidate the processes involving filter-feeding shellfish in relation to these nutrients, this study investigated the source and sink dynamics of dissolved inorganic nutrients in the Dapeng Cove sea area of Shenzhen. Over the past decade, a significant change in the N/P ratio within the survey area has been observed, suggesting a shift in nutrient limitation from nitrogen to phosphorus or phosphorus–silicon limitation. This induced change in the N/P ratio, along with Si/N and Si/P ratios, may facilitate the growth of cyanobacteria and, subsequently, alter the proportions of diatoms, dinoflagellates, and cyanobacteria. Seasonal fluctuations in human disturbance intensity and precipitation determine the seasonal and spatial distribution of nutrients in the bay, thereby influencing the bay ecosystem metabolism. The Land–Ocean Interactions in the Coastal Zone (LOICZ) model analysis revealed that the bay represents a major source of inorganic nitrogen and a source of phosphate in spring, summer, and autumn, while acting as a sink for phosphate in winter. Furthermore, rivers and groundwater represent the primary sources of phosphate and inorganic nitrogen in the bay. The bay exhibits an annual net ecosystem metabolic rate of 7.06 mmol C/m2/d, with denitrification dominating the nitrogen cycle at 12.65 mmol C/m2/d. Overall, the Dapeng Cove ecosystem displays net production exceeding respiration, classifying it as an autotrophic system. Additionally, the nitrogen cycle in the sea area is predominantly driven by denitrification. The analysis also revealed that the impact of oyster proliferation on the physical and chemical factors in the surveyed area is relatively weaker than that of surface runoff and groundwater inputs.

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Section: Factors Influencing Temporal and Spatial Variations In Nutri...mentioning

confidence: 68%

Dissolved Inorganic Nutrient Biogeochemistry in an Urbanized Coastal Region: A Study of Dapeng Cove, Shenzhen

Tong,

Chen,

Zhang

2023

Sustainability

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Multimetric trophic status and harmful algal species in a harbor area of the Amazon Macrotidal Mangrove Coast

Furtado,

Cavalcanti-Lima,

Santos

et al. 2024

Ecohydrology & Hydrobiology

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The green macroalga Caulerpa prolifera replaces seagrass in a nitrogen enriched, phosphorus limited, urbanized estuary

Brewton,

Lapointe

2023

Ecological Indicators

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Imbalanced phytoplankton C, N, P and its relationship with seawater nutrients in Xiamen Bay, China

Cited by 12 publications

References 68 publications

Dissolved Inorganic Nutrient Biogeochemistry in an Urbanized Coastal Region: A Study of Dapeng Cove, Shenzhen

Dissolved Inorganic Nutrient Biogeochemistry in an Urbanized Coastal Region: A Study of Dapeng Cove, Shenzhen

Multimetric trophic status and harmful algal species in a harbor area of the Amazon Macrotidal Mangrove Coast

The green macroalga Caulerpa prolifera replaces seagrass in a nitrogen enriched, phosphorus limited, urbanized estuary

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