Exploring intrinsic distribution of phytoplankton relative abundance and biomass in combination with continental-scale field investigation and microcosm experiment.
Exploring intrinsic distribution of phytoplankton relative abundance and biomass in combination with continental-scale field investigation and microcosm experiment.
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DOI：
10.1016/j.watres.2023.120853
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发表时间：
2023-11
期刊：
影响因子：
12.8
通讯作者：
Sisi Ye;Ling Wen;Li Gao;Junyi Zhang;Haihan Zhang;Songqi Yang;En Hu;Jianming Deng;Man Xiao;Arash Zamyadi;Baozhu Pan;Ming Li
中科院分区：
文献类型：
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作者：
Sisi Ye;Ling Wen;Li Gao;Junyi Zhang;Haihan Zhang;Songqi Yang;En Hu;Jianming Deng;Man Xiao;Arash Zamyadi;Baozhu Pan;Ming Li
浮游植物是水生生态系统的初级生产者，其多样性直接影响着群落的稳定性和初级生产力。然而，常用的多样性指数（如Shannon和Pielou指数）最初来自其他领域，而不是生态学，不具有直接的生物学解释功能。在多样性评价方法和理论中加入生物学解释功能，以弥补浮游植物多样性与生物学特征之间的差距。本研究的目的是阐明浮游植物相对丰度和生物量的内在分布格局。通过对中国367个浮游植物样品的野外调查和微宇宙实验，揭示了浮游植物相对丰度和生物量排序的指数分布格局。微宇宙实验表明，特定的增长率排名的线性分布导致指数分布的相对浮游植物生物量排名由于指数增长模式。通过数学推导发现，指数分布中的3个指标a、k和N可分别作为物种灭绝的临界相对多度、竞争系数和环境类群容量。相关分析表明，a与Shannon指数、Pielou指数呈正相关，k与Shannon指数、Pielou指数、Chao 1指数呈负相关。此外，N和Chao1指数几乎完全相同。本研究基于浮游植物的分布格局获得了这些指标，从而能够对浮游植物群落进行全面的分析，并为进一步评估水生态系统的健康提供了新的见解。
Phytoplankton are primary producers in aquatic ecosystems and their diversity directly affects the community stability and primary productivity. However, the commonly used diversity indices (such as Shannon and Pielou indices) were originally derived from other fields rather than ecology and did not have a direct biological explanatory function. There is still a need to incorporate biological explanatory functions into diversity evaluation methods and theories to bridge the gap between phytoplankton biodiversity and biological characteristics. This study aimed to explicate the intrinsic distribution patterns of phytoplankton relative abundance and biomass. Our study demonstrated an exponential distribution pattern of phytoplankton relative abundance and biomass ranking through field investigations of 367 phytoplankton samples in China and microcosm experiments, respectively. Microcosm experiments illustrated that the linear distribution of the specific growth rate ranking resulted in an exponential distribution of the relative phytoplankton biomass ranking due to exponential growth patterns. Through mathematical deduction, it was found that the three indicesa, kandNin the exponential distribution could be considered as the critical relative abundance of extinction, competition coefficient and the environmental taxa capacity, respectively. We found thatawas positively correlated with Shannon index and Pielou index,kwas negatively correlated with Shannon index, Pielou index and Chao1 index. In addition,Nand Chao1 index were almost exactly the same. Our study obtained these indices based on the distribution pattern of phytoplankton, enabling a comprehensive analysis of the phytoplankton community and providing novel insights for further evaluating the health of aquatic ecosystems.