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A tropical cyclone-induced and satellite-detected chlorophyll a elevation accompanied by phytoplankton biomass decrease

delete2025-12-02
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OA
AI
L
Lin Deng
S
Siyu Chen
X
X. Zeng
J
Jian Wang
R
Rongwang Zhang *
J
Jun Zhao *
DOI:10.1088/1748-9326/ae21f3delete
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摘要

摘要

En 中文
卫星观测 traditionally 将热带气旋 (TCs) 与叶绿素-a (Chla) 浓度升高的浮游植物爆发联系起来,但这一关系掩盖了复杂的潜在生态过程。通过整合卫星数据与现场生物光学测量,我们揭示了 2022 年热带气旋‘Chaba’引发的、挑战传统认知的反直觉生态响应。尽管卫星检测到的 Chla 浓度在热带气旋经过后增加,且浮游植物分裂速率加快,但我们意外地记录到浮游植物生物量和碳-叶绿素 (C:Chl) 比值同时下降。我们的分析表明,生理调控而非生物量积累,在热带气旋干扰期间及之后的高 Chla 区域占据主导地位,其中 C:Chl 异常贡献了超过 60% 的 Chla 升高区域。本研究提出了一个范式转变的情景:浮游植物生物量始于热带气旋前的积累,然而在热带气旋期间及之后的损失率增加实际上降低了浮游植物生物量,尽管分裂速率增强。我们记录的热带气旋诱导的 Chla 增强与浮游植物生物量动态之间的根本解耦,对海洋碳循环模型和气候预测具有深远影响,需要重新校准我们如何解释风暴影响下的海洋生态系统中卫星 Chla 信号。

期刊

Environmental Research Letters 封面图
Environmental Research Letters
IF:
5.6
论文数:
9.5K
被引数:
5.0W

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