Latitudinal patterns of terrestrial phosphorus limitation over the globe (Letter)

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Hou, Enqing
Wen, Dazhi
Jiang, Lifen
Luo, Xianzhen
Kuang, Yuanwen
Lu, Xiankai
Chen, Chengrong
Allen, Keanan T
He, Xianjin
Huang, Xingzhao
Luo, Yiqi
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2021
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Abstract

Phosphorus limitation on terrestrial plant growth is being incorporated into Earth system models. The global pattern of terrestrial phosphorus limitation, however, remains unstudied. Here, we examined the global-scale latitudinal pattern of terrestrial phosphorus limitation by analysing a total of 1068 observations of aboveground plant production response to phosphorus additions at 351 forest, grassland or tundra sites that are distributed globally. The observed phosphorus-addition effect varied greatly (either positive or negative), depending significantly upon fertilisation regime and production measure, but did not change significantly with latitude. In contrast, phosphorus-addition effect standardised by fertilisation regime and production measure was consistently positive and decreased significantly with latitude. Latitudinal gradient in the standardised phosphorus-addition effect was explained by several mechanisms involving substrate age, climate, vegetation type, edaphic properties and biochemical machinery. This study suggests that latitudinal pattern of terrestrial phosphorus limitation is jointly shaped by macro-scale driving forces and the fundamental structure of life.

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Ecology Letters

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This publication has been entered in Griffith Research Online as an advanced online version.

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Ecological applications

Ecology

Evolutionary biology

Aboveground production

climate

fertilization regime

latitudinal gradient

phosphorus limitation

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Hou, E; Wen, D; Jiang, L; Luo, X; Kuang, Y; Lu, X; Chen, C; Allen, KT; He, X; Huang, X; Luo, Y, Latitudinal patterns of terrestrial phosphorus limitation over the globe (Letter), Ecology Letters, 2021

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