概括
生物活动,特别是藻生长,控制了海洋表面水中的溶解含量. 这一过程将的度降低到自然的海洋水平,并影响藻生长.
科学领域:
- 海洋生物学 海洋生物学
- 海洋学 海洋学 海洋学
- 生物地质化学生物地质化学
背景情况:
- 在表面海洋水中溶解的度通常很低 (约0.5μg/L).
- 控制海洋环境中分布的因素尚未完全理解.
- 假设生物活动在调节含量方面发挥着重要作用.
研究的目的:
- 研究生物活动对海水中溶解度的影响.
- 为了确定对海洋藻生长的影响.
主要方法:
- 在人造海水媒介中培育藻骨架 (Skeletonema costatum).
- 用增介质,以达到不同的度.
- 在藻生长之前和之后,在介质中测量溶解的度.
主要成果:
- Skeletonema costatum的生长显著降低了人造海水中溶解的度.
- 的度降低到与表面开放海洋水域中发现的度一致的水平.
- 对藻生长具有催化和限制作用.
结论:
- 实验证据支持这样的假设,即生物活动,特别是藻生长,控制了表面海洋水中溶解的度和分布.
- 藻 Skeletonema costatum 活跃地从海水中去除,调节其度.
- 在藻生理学中起着双重作用,既起着催化剂的作用,又起着限制营养的作用.
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