在可变的光和流动模式下优化海洋巨生物的能力,以局部改善海洋酸化:从实验方法的见解
Aurora M Ricart1, Brittney Honisch1, Evangeline Fachon2
1Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine, United States America.
PloS one
|October 11, 2023
概括
像Saccharina latissima这样的海洋巨型植物可以通过吸收二氧化碳 (CO2) 来帮助缓解海洋酸化. 这种最佳条件包括高光和水流,尽管未来的气候变化可能会改变效率.
科学领域:
- 海洋生物学 海洋生物学
- 海洋学 海洋学 海洋学
- 气候变化科学 气候变化科学
背景情况:
- 海洋酸化对沿海生态系统构成威胁.
- 海洋巨型植物 (海草和海藻) 吸收二氧化碳 (CO2) 并可以局部增加海水的pH值.
- 了解影响这种改善的因素对于沿海管理至关重要.
研究的目的:
- 评估四种海洋巨型植物物种改善海洋酸化的能力.
- 研究水的停留时间和辐射对Saccharina latissima的酸化改善的影响.
- 在当前和未来的气候情景下,模拟巨生物对二氧化碳吸收的生态系统水平潜力.
主要方法:
- 在水族馆实验中,使用Ulva lactuca,Zostera marina,Fucus vesiculosus和Saccharina latissima在高CO2的条件下进行了水族馆实验.
- 在不同的辐射和水停留时间下进一步测试了Saccharina latissima.
- 测量包括溶解氧气,pH值,总度,溶解无机碳 (DIC) 和碳酸和度 (Ω).
主要成果:
- 所有测试的巨型植物在高CO2下都提高了生产力.
- 萨卡里娜拉蒂斯玛 (Saccharina latissima) 显示出最大的能力去除DIC并增加pH和 Ω.
- 高照射率和高水位停留时间优化了S. latissima的改善效应,但在未来的气候情景下,这种效应减少了.
结论:
- 萨卡里娜·拉蒂斯玛 (Saccharina latissima) 显示出缓解沿海海洋酸化的巨大潜力.
- 环境因素,如辐射和水的停留时间是关键的驱动因素,但它们的影响可能会随着未来的气候条件而改变.
- 预测建模表明,巨生物质的生物质,辐射和居住时间对于生态系统层面的二氧化碳系统调节至关重要.
更多相关视频
相关概念视频
01:06Primary Production
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
01:30Marine Microbial Ecology
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
01:24Freshwater Microbial Ecology
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic systems...