How did the floating Ulva prolifera develop into the world's largest green tide?

IF 3 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Marine environmental research Pub Date : 2024-09-21 DOI:10.1016/j.marenvres.2024.106763

Ning Gong , Kuishuang Shao , Lingyu Shen , Zixuan Wang , Xue Han , Kai Zhou , Deyu Kong , Xishan Pan

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Abstract

It has been 16 years since the world's largest Ulva bloom appeared in the Yellow Sea. However, it remains unclear how the floating Ulva prolifera developed into the immense green tide within two months especially considering that source control measures have been conducted since 2019. In this study, we investigated the growth mechanism of the floating population by examining the production and regeneration of U. prolifera explants and constructing a growth model. The results showed that U. prolifera explants exhibited rapid regeneration mainly through branches at 15, 20 and 25 °C. Algivore feeding and sporulation (at 20–25 °C) contributed to mass production of explants. The growth of floating population could be attributed to the coupling of mass production and rapid regeneration of explants through multiple cycles, which accounted for the outbreak of floating green tide. This finding presented a novel population growth model to elucidate macroalgal bloom occurrences.

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漂浮的莼菜是如何发展成为世界上最大的绿潮的？

黄海出现世界上最大的莼菜藻华已有 16 年之久。然而，特别是考虑到自 2019 年以来一直在采取源头控制措施，漂浮莼菜是如何在两个月内发展成巨大绿潮的仍不清楚。在本研究中，我们通过检测莼菜外植体的生成和再生，并构建生长模型，研究了漂浮种群的生长机制。结果表明，在15、20和25 °C条件下，U. prolifera外植体主要通过分枝表现出快速再生。食藻动物的摄食和孢子的产生（20-25 °C）促进了外植体的大量生产。漂浮种群的增长可归因于外植体的大量生产和快速再生的多次循环，这也是漂浮绿潮爆发的原因。这一发现提出了一个新的种群增长模型，以阐明大型藻类水华的发生。

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来源期刊

Marine environmental research 环境科学-毒理学

CiteScore

5.90

自引率

3.00%

发文量

217

审稿时长

46 days

期刊介绍： Marine Environmental Research publishes original research papers on chemical, physical, and biological interactions in the oceans and coastal waters. The journal serves as a forum for new information on biology, chemistry, and toxicology and syntheses that advance understanding of marine environmental processes. Submission of multidisciplinary studies is encouraged. Studies that utilize experimental approaches to clarify the roles of anthropogenic and natural causes of changes in marine ecosystems are especially welcome, as are those studies that represent new developments of a theoretical or conceptual aspect of marine science. All papers published in this journal are reviewed by qualified peers prior to acceptance and publication. Examples of topics considered to be appropriate for the journal include, but are not limited to, the following: – The extent, persistence, and consequences of change and the recovery from such change in natural marine systems – The biochemical, physiological, and ecological consequences of contaminants to marine organisms and ecosystems – The biogeochemistry of naturally occurring and anthropogenic substances – Models that describe and predict the above processes – Monitoring studies, to the extent that their results provide new information on functional processes – Methodological papers describing improved quantitative techniques for the marine sciences.