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大型海洋气溶在浮游生物分散中的贡献

Gregory Sinnett^1,2, Luc Lenain^1,2, Emna Braham^1,3

¹Scripps Institution of Oceanography, University of California, San Diego, California 92093, United States.

Environmental science & technology

|April 3, 2025

概括

经常观察到大型海洋气溶,包括高达90微米的完整植物浮游生物细胞,可以通过海对空转移进行运输. 这项研究揭示了这些重要的生物气溶的被忽视的丰富性和多样性.

科学领域:

大气科学大气科学
海洋生物学海洋生物学
气候科学气候科学

背景情况:

海喷气气溶 (SSA) 通过影响辐射强迫,云形成和降雨,显著影响气候.
虽然较小的SSA颗粒 (0.110μm) 已得到充分研究,但较大的气溶 (>20μm) 和它们的组成,特别是海洋生物气溶,仍然不明.
大型生物气溶可以来自花粉,真菌子和细胞碎片,但它们在海洋环境中的动态尚不清楚.

研究的目的:

研究推动大型海洋气溶产生的波浪和大气条件.
为了确定这些气溶的数量,尺寸分布 (高达90微米),以及成分.
提供了海上气溶中大型完好无损的植物浮游生物细胞的第一个直接的空中证据.

主要方法:

进行了为期两个月的波浪和大气条件的观测研究.
量化海洋喷雾气溶丰富度和测量颗粒大小.
收集了气溶样本进行显微镜分析以确定生物成分.

主要成果:

经常观察到大于20微米的海洋气溶.
在气溶中鉴定出多样化的完好无损的植物性浮游生物细胞,从小型鞭毛虫 (2微米) 到藻和殖民地细胞 (> 40微米).
发现了大量的小鞭毛虫,这表明海到空的转移作为一个关键的分散机制.

结论:

大型海洋气溶无处不在,并且经常携带完整的浮游植物细胞.
海到空气的转移是海洋浮游生物的潜在重要,被忽视的分散途径.
对大型完好无损的植物浮游生物细胞的直接空中观测提供了对气溶组成和海洋生态系统动态的新见解.

关键词:

气溶是一种气溶.生物气溶是一种生物气溶.大型的气溶.植物浮游生物植物.海洋喷雾剂是一种海洋喷雾剂.交通运输运输运输运输运输运输运输运输运输

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