隐藏的加速揭示了贝类在海洋碳捕获中的作用
Jianyu He1, Yulin Tao2, Shuai Shao2
1Donghai Laboratory, Zhoushan 316021, Zhejiang, China; Laboratory of Marine Biological Resources and Molecular Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China.
The Science of the total environment
|August 23, 2024
概括
贝类养殖通过促进沉积物中的反抗性碳积累,增强了蓝色碳的捕获. 这项研究揭示了"三M" (微藻--微生物群) 联盟,该联盟促进了碳固定和气候缓解.
科学领域:
- 海洋生态海洋生态学
- 气候变化缓解缓解 气候变化缓解
- 生物地质化学生物地质化学
背景情况:
- 贝类海洋养殖在蓝色碳战略中的作用仍在争论中,需要基于生态系统的强有力的机制.
- 量化贝养殖场的碳捕获对于了解它们的气候变化缓解潜力至关重要.
研究的目的:
- 评估贝养殖场的碳吸收能力及其对沉积碳固定和封存的影响.
- 调查驱动鱼水产养殖区碳捕集的生态系统机制.
主要方法:
- 在贝水产养殖区的量化空海二氧化碳流量.
- 分析了沉积碳的组成,重点是反弹性碳 (RC).
- 进行了长期室内实验,以评估鱼与沉积物RC的相互作用.
- 测量了反复性溶解有机物 (RDOM) 和碳固定基因的变化.
主要成果:
- 春季在水产养殖区观察到一个微弱的碳汇 (-0.15 ± 0.07 mmol·m−2·d−1).
- 记录了沉积物反碳 (RC) 显著增加2.5倍,这是由于鱼的参与.
- 在鱼参与的沉积物中发现451.4%的富含碳酸的环分子 (CRAM) 类化合物 (RDOM).
- 表明贝参与对沉积碳固定基因的积极影响.
结论:
- 贝贝养殖绝对是蓝色碳阳性,有助于碳捕获.
- 提出了一个新的"3M" (微藻--微生物群) 联盟理论,用于高碳封存潜力.
- "鱼"机制加速了碳捕获,并增强了气候调节的生态系统服务.
相关概念视频
The Carbon Cycle
37.2K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
37.2K
Keystone Species
21.6K
Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...
21.6K
Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
The Sulfur Cycle
43.9K
Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
43.9K
Primary Production
23.6K
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.
23.6K
Osmoregulation in Fishes
49.4K
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
49.4K


