海洋环境和气候变化对全球海洋浮游植物动态的影响，越来越受到关注，但仍是一个谜。
本研究基于近几十年的全球观测数据，采用相关性和信息流相结合的综合方法，探讨了浮游植物生物量、海洋环境和气候作用力之间的关系。结果显示，浮游植物生物量与环境因子的相关性和因果关系，呈现空间不对称性——环境因子直接驱动生物量变化的区域，集中在海流和副热带环流中。
温度、光照和混合层深度对全球浮游植物年代际变化有显著影响。年代际时间尺度上的气候作用力，直接影响赤道太平洋、南太平洋和印度洋的浮游植物生物量。由于多种气候事件，赤道太平洋的生物量变化更不确定。研究结果强调，环境和气候变化仅在海洋尺度上的特定区域，直接影响浮游植物的年代际变化。
附：英文原文
Title: Ocean-scale patterns of environment and climate changes driving global marine phytoplankton biomass dynamics
Author: Zhenghao Li, Deyong Sun, Shengqiang Wang, Yu Huan, Hailong Zhang, Yibo Yuan, Yijun He
Issue&Volume: 2024-11-08
Abstract: Effects of marine environment and climate changes on phytoplankton dynamics in global oceans have received increasing attention but remain a mystery. This study used a comprehensive approach combining correlation and information flow to explore relationships among phytoplankton biomass, marine environment, and climate forcing based on global observations over the past multi-decadal period. Correlation and causality between phytoplankton biomass and environmental factors exhibit spatial asymmetry—regions where environmental factors directly drive biomass variations were concentrated in oceanic currents and subtropical circulations. Temperature, light, and mixed layer depth show pronounced influences on global phytoplankton interdecadal variations. Climate forcing over interdecadal timescales directly affects phytoplankton biomass in the equatorial Pacific, South Pacific, and Indian Oceans, with more uncertain biomass variability in the equatorial Pacific due to multiple climate events. Our findings revealed that environment and climate changes directly affect phytoplankton interdecadal variability only in specific regions at the oceanic scale.
DOI: adm7556
Source: https://www.science.org/doi/10.1126/sciadv.adm7556