Effect of ocean warming on pigment and photosynthetic carbon fixation of plankton assemblage in Pingtan Island of Southeast China

Zhang, Yong; Ma, Shuai; Yang, Xiang; Wang, Yingrui; Hu, Yubin; Xie, Rongrong; Li, Jiabing; Han, Yonghe; Zhang, Hong; Zhang, Yong

doi:10.1016/j.marenvres.2023.106196

Marine Environmental Research

2023

DOI: 10.1016/j.marenvres.2023.106196

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Effect of ocean warming on pigment and photosynthetic carbon fixation of plankton assemblage in Pingtan Island of Southeast China

Yong Zhang,

Shuai Ma,

Xiang Yang

et al.

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2024

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Four years of climate warming reduced dark carbon fixation in coastal wetlands

Liu,

Qi,

Zheng

et al. 2024

The ISME Journal

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Dark carbon fixation (DCF), conducted mainly by chemoautotrophs, contributes greatly to primary production and the global carbon budget. Understanding the response of DCF process to climate warming in coastal wetlands is of great significance for model optimization and climate change prediction. Here, based on a four-year field warming experiment (average annual temperature increase of 1.5°C), DCF rates were observed to be significantly inhibited by warming in coastal wetlands (average annual DCF decline of 21.6%, and estimated annual loss of 0.08–1.5 Tg C yr−1 in global coastal marshes), thus causing a positive climate feedback. Under climate warming, chemoautotrophic microbial abundance and biodiversity, which were jointly affected by environmental changes such as soil organic carbon and water content, were recognized as significant drivers directly affecting DCF rates. Metagenomic analysis further revealed that climate warming may alter the pattern of DCF carbon sequestration pathways in coastal wetlands, increasing the relative importance of the 3HP/4HB cycle, whereas the relative importance of the dominant chemoautotrophic carbon fixation pathways (CBB cycle and W-L pathway) may decrease due to warming stress. Collectively, our work uncovers the feedback mechanism of microbially mediated DCF to climate warming in coastal wetlands, and emphasizes a decrease in carbon sequestration through DCF activities in this globally important ecosystem under a warming climate.

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Four years of climate warming reduced dark carbon fixation in coastal wetlands

Liu,

Qi,

Zheng

et al. 2024

The ISME Journal

View full text Add to dashboard Cite

show abstract

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Effect of ocean warming on pigment and photosynthetic carbon fixation of plankton assemblage in Pingtan Island of Southeast China

Cited by 1 publication

References 44 publications

Four years of climate warming reduced dark carbon fixation in coastal wetlands

Four years of climate warming reduced dark carbon fixation in coastal wetlands

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