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\begin{document}

\title{The allometry of plant height explains species loss under nitrogen
addition}



\author[1]{Yao Xiao}%
\author[2]{Xiang Liu}%
\author[1]{Li  Zhang}%
\author[1]{Zhiping Song}%
\author[1]{Shurong Zhou}%
\affil[1]{Fudan University}%
\affil[2]{Fudan University Institute of Biodiversity Science}%


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  \date{June 15, 2024}


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\begin{abstract}
Light asymmetry, with a higher light acquisition per unit biomass for
larger plants, has been proposed as a major mechanism of species loss
after nitrogen addition. However, solid evidence for this has been
scarce. We measured the allometric size-height relationships of 25 plant
species along a nitrogen addition gradient manipulated annually for
eight years in a speciose alpine meadow and found that the rare species
advantage of light acquisition (i.e., low height scaling exponent) in
natural conditions disappeared after nitrogen addition. Those species
failing to lower their height scaling exponents decreased in relative
abundance after nitrogen addition, thereby decreasing the community
weighted mean and dispersion of the height scaling exponent and
ultimately the species richness. Our results provided some unique
evidence for light asymmetry induced species loss after nitrogen
addition and a new insight from the perspective of allometric growth to
explain biodiversity maintenance in the face of global changes.%
\end{abstract}%



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\textbf{Hosted file}

\verb`Allometric growth and nitrogen addition_for ELE _submitted.docx`  available at \url{https://authorea.com/users/340586/articles/467762-the-allometry-of-plant-height-explains-species-loss-under-nitrogen-addition}

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