通过异构病释放的可以促进有害的藻类繁殖
Yoonja Kang1, Christopher J Gobler2
1Chonnam National University, Department of Ocean Integrated Science, Yeosu 59626, South Korea.
Harmful algae
|November 11, 2023
概括
竞争性植物浮游生物的抑制,可以通过释放等必需营养素来促进有害藻类繁殖 (HABs). 这项研究表明,HABs利用这种释放的,加剧了花,并创建了一个积极的反循环.
科学领域:
- 海洋生态海洋生态学
- 化学生态化学生态学
- 物理学的生理学
背景情况:
- 形病是一种影响植物浮游生物群体结构的已知机制.
- 有害的藻类繁殖 (HABs) 经常与营养负载有关,但对HABs营养循环中的合病的作用尚未得到充分研究.
- 营养物质通过异构病的再生可能是HAB扩散的一个重要因素.
研究的目的:
- 为了研究异构释放的 (N) 对HAB物种的影响.
- 量化从溶解植物浮游生物到同时发生的HAB的N转移.
- 探索异构病的潜力,以创建一个积极的反循环,维持HABs.
主要方法:
- 使用同位素标记 (15NO3-或15NH4+) 在猎物物种Akashiwo sanguinea的实验.
- 在多种HAB物种 (亚历山大,Margalefidinium polykrikoides,Aureoumbra lagunensis) 和Akashiwo sanguinea之间发生的等位基相互作用.
- 在HAB物种和溶解N池中测量细胞密度,生长速度和N含量.
主要成果:
- HAB物种显示细胞密度增加,增长率,和N含量当与血红细胞交互allelopathically时.
- 从被溶解的血清阿卡希沃到HAB物种发生了显著的N转移,提供了其细胞N的60-100%.
- 使用15NO3-时,与15NH4+相比,转移和溶解的N释放更高,这表明不同的N吸收和分类.
- 在溶解的氨池中观察到15N的缩在溶解后.
结论:
- 合物病症通过释放,直接推动HAB生长,从而积极促进营养循环.
- 这种营养再生机制表明,藻病在促进和维持有害藻类繁殖中起着至关重要的作用.
- 这些发现支持了这样一个假设,即列病可以建立一个积极的反循环,通过营养循环利用加强HAB.
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