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通过光合作用减少二氧化碳,即使在两个湖中的植物浮游生物开花期间也无法检测到

Karla Münzner¹, Silke Langenheder², Gesa A Weyhenmeyer²

¹Division of Limnology, Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden. karla.munzner@ebc.uu.se.

Scientific reports

|August 19, 2023

概括

玻里亚湖释放二氧化碳 (CO2),但植物浮游生物开花期间的二氧化碳减排研究不足. 在这项瑞典研究中,物理湖泊过程,而不是藻类繁殖,控制了二氧化碳水平.

科学领域:

环境科学环境科学
临界技术临界技术
生物地质化学生物地质化学

背景情况:

玻里亚湖通常过度和二氧化碳 (CO2),主要来自流域输入和有机物分解.
二氧化碳来源得到了充分的研究,但缓解二氧化碳积累的过程,特别是植物浮游生物开花期间,仍然不太了解.

研究的目的:

为了研究湖泊在植物浮游生物开花期间的二氧化碳减排能力.
为了确定二氧化碳水平和植物浮游生物密度之间的关系,在两个瑞典的湖泊经历不同的开花类型.

主要方法:

在两年内监测Erken和Erssjön湖中的二氧化碳部分压力 (pCO2).
观察了由Gloeotrichia echinulata和Gonyostomum精液主导的开花条件.
分析物理因素对二氧化碳动态的影响.

主要成果:

在pCO2和植物浮游生物密度之间没有发现直接的相关性,即使是在开花期间.
风引起的混合和来自流入的无机碳进口似乎取代了植物浮游生物对pCO2的影响2.
物理湖泊动态显著影响了二氧化碳水平,掩盖了来自花的生物信号.

结论:

植物浮游生物的繁荣并不一定会减少北极湖中的二氧化碳超和.
物理湖泊过程在调节二氧化碳水平方面发挥着关键作用,影响区域和全球碳预算.
对物理生物相互作用的进一步研究对于准确的湖泊碳循环评估至关重要.

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