Effects of daily nitrogen and phosphorus input on planktonic community metabolism in a semi-enclosed bay by mesocosm experiment

Chen, Xiang; Li, Yao; Ke, Zhixin; Li, Gang; Huang, Yijie; Su, Xinying; Huang, Liangmin; Song, Xinyu

doi:10.1007/s13131-022-1986-4

Cited by 2 publications

(2 citation statements)

References 73 publications

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“…Plankton metabolism is a fundamental property of marine ecosystem driving the flux of gases and the transference of organic matter to the food web (Agusti et al, 2018). Marine plankton metabolic processes mainly include the gross primary production(GPP) and community respiration (Del Giorgio and Williams, 2005;Ducklow and McAllister, 2005), and directly affect the oceanic carbon cycle (Xiang et al, 2022).The key ecological processes affecting the carbon budget in marine ecosystems remain unknown, and related studies primarily focus on the response of plankton community metabolism to warming due to global climate change (Nguyen et al, 2012;Wang, 2014). Warming caused by thermal discharge could raise the adjacent water temperature in the nuclear power plant by over 8°C (Kim et al, 2007;Choi, 2008).…”

Section: Introductionmentioning

confidence: 99%

High-temperature thermal discharge inhibits plankton community metabolism in a partly eutrophicated bay in China

Liu

Wang

et al. 2023

Front. Mar. Sci.

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Managing the marine ecosystem effectively requires studying the response of plankton community metabolism to warming. Moreover, warming caused by thermal discharge is known to significantly raise the water temperatures in the nuclear power plants. However, effects of thermal discharge on planktonic community metabolic characteristics, especially net community production, in surrounding waters remain poorly understood. Therefore, in this study, we aimed to analyze the characteristics of plankton community metabolism in thermal discharge area of the Daya Bay, China. The investigations were conducted in August 2016 and January 2017. Our results showed that the plankton community metabolism was promoted in moderately warm regions (29.4-30 °C), with higher gross primary production and community respiration than in high- and extremely high-temperature regions; meanwhile, plankton community metabolism was evidently inhibited in high (31.4 °C in winter) or extremely high (36°C in summer) temperature regions, thereby exhibiting heterotrophic metabolism state. Our findings indicate that warming could affect plankton community carbon metabolism in the Daya Bay, thereby declining the stability of the marine ecosystem.

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Section: Introductionmentioning

confidence: 99%

High-temperature thermal discharge inhibits plankton community metabolism in a partly eutrophicated bay in China

Liu

Wang

et al. 2023

Front. Mar. Sci.

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“…On the other hand, marine plankton are valuable indicators of environmental stability because they respond quickly to environmental changes due to their shortlife cycle and rapid carbon turnover rate (Furnas et al, 2005;Glacio Souza et al, 2022). Therefore, planktonic metabolism plays a pivotal role in the carbon pump of coral atolls by influencing the carbon budget of the ecosystem, and the balance between production and metabolism is effective in assessing the stability and health of the ecosystem (Bell et al, 2014;Ke et al, 2016;Xiang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Planktonic carbon metabolism of an underwater coral atoll in the oligotrophic sea: a case study of Zhongsha Atoll, Central South China Sea

Xiang,

Zhong,

et al. 2023

Front. Mar. Sci.

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Coral atolls are widely recognized as oases of remarkable biodiversity and productivity within the oligotrophic open ocean. However, considerable debate surrounds the net carbon metabolism of planktonic communities in oceanic coral atolls and their contribution to the overall carbon budget of the ocean. Zhongsha Atoll, situated in the central South China Sea, represents one of the largest submerged reef atolls globally. Despite its significance, the ecological environment and characteristics of community production and metabolism at Zhongsha Atoll have been scarcely studied, and it remains uncertain whether these features differ from those observed in barrier-type reefs. In this study, we examined the gross primary production (GPP), community respiration (CR), and net community production (NCP) of the planktonic community in Zhongsha Atoll and its surrounding waters from 22 June to 6 July 2020. We also analyzed the potential influences of their distribution patterns. Our findings revealed that CR did not vary significantly with depth and it was considerably higher than GPP. As a result, the waters at the euphotic depth of Zhongsha Atoll were found to be heterotrophic, with negative NCP. Additionally, the correlation analysis demonstrated a negative relationship between NCP and CR. The NCP values were -35.28 ± 26.73 and -53.18 ± 31.77 mg C m-3 d-1 for the surface and chlorophyll maximum (DCM) layers, respectively. The NCP for the upper water column was -3023 mg C m-2 d-1. The waters above the reef flat (FL) exhibited higher primary productivity, with GPP in the surface and DCM layer being 1.61 and 2.71 times greater, respectively, than in the surrounding oceanic regions. However, the FL displayed a greater level of heterotrophy due to its stronger CR. In conclusion, the carbon metabolism of the planktonic community in submerged Zhongsha Atoll acts as a source of atmospheric CO2, and the distribution of coral reefs considerably contributes to the efficiency of carbon cycling within the atoll.

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Effects of daily nitrogen and phosphorus input on planktonic community metabolism in a semi-enclosed bay by mesocosm experiment

Cited by 2 publications

References 73 publications

High-temperature thermal discharge inhibits plankton community metabolism in a partly eutrophicated bay in China

High-temperature thermal discharge inhibits plankton community metabolism in a partly eutrophicated bay in China

Planktonic carbon metabolism of an underwater coral atoll in the oligotrophic sea: a case study of Zhongsha Atoll, Central South China Sea

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