深海采矿:利用高压条件研究海底 Spisula solida solida 中沉积物羽毛的影响
Rithielli Marassi1, Marlene Pinheiro1,2, Miguel Caetano1,3
1CIMAR/CIIMAR-Interdisciplinary Centre of Marine and Environmental Research, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.
Environmental science and pollution research international
|September 16, 2023
概括
深海采矿带来风险;这项研究表明,沉积物羽毛对鱼过产生负面影响,并在Spisula solida中在2~4g/L时引起氧化应激,为危险评估提供了信息.
科学领域:
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
- 深海生态 深海生态
背景情况:
- 深海资源开发需要强大的危险和风险评估框架.
- 了解沉积物的生物影响对于环境保护至关重要.
研究的目的:
- 评估悬浮沉积物在高压条件下对双 Spisula solida 的功能和生化影响.
- 为改善与深海采矿活动相关的危险评估提供数据.
主要方法:
- 在96小时内,Spisula solida被暴露在4个沉积物度 (0-4g/L) 的4bar下.
- 在不同组织中测量过率 (FR) 和氧化应激生物标志物 (catalase,谷氨S转移酶,脂质过氧化).
主要成果:
- 过率在沉积物度为2g/L和4g/L时显著下降.
- 生物标志物反应取决于组织和度,中的触酶升高,消化腺中的谷氨S转移酶降低1g/L.
- 在2g/L和4g/L时观察到负面的功能影响.
结论:
- 2-4g/L的悬浮沉积物对Spisula solida的过产生负面影响,表明其功能受损.
- 氧化应激反应表明亚致死性影响,为深海采矿的风险评估提供信息.
- 这些发现有助于减轻深海资源开发对环境造成的潜在破坏.
相关概念视频
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...
01:18Deep Sea Microbial Ecology
The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches extending beyond...