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海洋酸化改变了软体动物呼吸微环境中的碳酸盐化学异质性

Minghui Jiao¹, Jiaqi Li¹, Meng Zhang¹

¹State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao, Shandong 266237, China.

Marine pollution bulletin

|April 18, 2025

概括

海洋酸化会在软体动物的呼吸区内产生明显的化学变化,影响它们的生理. 各种物种表现出不同的反应,有些人随着时间的推移适应了二氧化碳水平的提高.

科学领域:

海洋生物学海洋生物学
海洋学海洋学海洋学
环境科学环境科学

背景情况:

海洋酸化 (OA) 改变了海水的碳酸盐化学成分,对海洋化物构成风险.
呼吸道微环境 (RE) 中局部化学波动可能比海水的散装变化产生更大的生理影响.

研究的目的:

在环境和OA条件下,研究四种主要的软体动物物种在呼吸微环境 (RE) 中碳酸盐化学异质性.
了解OA诱导的RE中的化学变化对生理反应的跨种类变异性.

主要方法:

在四种软体动物的RE中测量了pH,溶解无机碳 (DIC),pCO2和总度减去DIC (TA-DIC).
在环境 (pH 8.1) 和OA (pH 7.8) 条件下,将RE化学与散装海水进行比较.
评估了OA对RE化学异质性的急性和长期暴露影响.

主要成果:

与散装海水相比,RE始终显示出更高的DIC和pCO2,以及较低的pH和TA-DIC,无论环境pH值如何.
哈利奥蒂斯·迪斯克·汉奈 (Haliotis discus hannai) 呈现出最显著的RE修改,具有最高的DIC/pCO2和最低的pH/TA-DIC.
在三种物种中,急性OA增加了pCO2异质性,同时降低了pH和DIC异质性,这表明CO2分泌被抑制. 长时间的OA增强了DIC和pCO2异质性,表明了适应.

结论:

软体动物的呼吸微环境表现出独特的碳酸盐化学成分,与散装海水不同,具有特定物种的变化.
海洋酸化显著改变了再生能源的化学成分,影响了二氧化碳的排泄能力,可能需要进行生理调整.
这些发现强调了局部化学变化的重要性,以了解软体动物的脆弱性和适应海洋酸化.

关键词:

碳酸盐系统是一个碳酸盐系统.微观环境是一个微观环境.软体动物软体动物海洋酸化是指海洋的酸化.空间异质性空间异质性

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