为所有人提供食物? 野火灰能促进多种真核生物浮游生物的生长
T M Ladd1, D Catlett1, M A Maniscalco1
1Interdepartmental Graduate Program in Marine Science, University of California, Santa Barbara, CA, USA.
Proceedings. Biological sciences
|November 1, 2023
概括
来自托马斯火灾的野火灰丰富了太平洋水域的营养,促进了微生物的生长和多样性. 灰作为一个重要的营养来源,特别是,为海洋原生动物社区.
科学领域:
- 海洋化学 海洋化学
- 微生物学 微生物学
- 环境科学环境科学
背景情况:
- 2017年托马斯火灾是加利福尼亚州的一场重大野火,在太平洋东北部产生了大量的灰.
- 野火灰可以将各种元素和化合物引入海洋环境.
研究的目的:
- 为了研究托马斯火灾灰沉积对海水化学的影响.
- 确定灰对海洋微生物群落生长和组成的影响.
主要方法:
- 在加利福尼亚沿海水域进行了实验,使用高度和低度的灰液.
- 分析了海水的化学成分,微粒有机碳 (POC) 度和微生物群体组成,这些都是暴露在灰后的结果.
主要成果:
- 灰液在海水中显著增加了溶解的营养物质 (无机,酸) 和金属 (铁,,,铜).
- 在暴露于灰液的微生物群落中,有机颗粒碳度增加了59-154%.
- 来自11个分类学部门的多种多样的真核微生物 (原生体) 的相对丰富度增加.
结论:
- 大规模的野火可以成为沿海海洋生态系统的重要大气营养来源.
- 托马斯火灰作为营养来源,促进了海洋原生动物群落的生长和改变了它们的组成.
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