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Apparent plasticity in functional traits determining competitive ability and spatial distribution: a case from desert.

ABSTRACT: Species competitive abilities and their distributions are closely related to functional traits such as biomass allocation patterns. When we consider how nutrient supply affects competitive abilities, quantifying the apparent and true plasticity in functional traits is important because the allometric relationships among traits are universal in plants. We propose to integrate the notion of allometry and the classical reaction norm into a composite theoretical framework that quantifies the apparent and true plasticity. Combining the framework with a meta-analysis, a series of field surveys and a competition experiment, we aimed to determine the causes of the dune/interdune distribution patterns of two Haloxylon species in the Gurbantonggut Desert. We found that (1) the biomass allocation patterns of both Haloxylon species in responses to environmental conditions were apparent rather than true plasticity and (2) the allometric allocation patterns affected the plants' competition for soil nutrient supply. A key implication of our results is that the apparent plasticity in functional traits of plants determines their response to environmental change. Without identifying the apparent and true plasticity, we would substantially overestimate the magnitude, duration and even the direction of plant responses in functional traits to climate change.

SUBMITTER: Xie JB

PROVIDER: S-EPMC4507175 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature

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Apparent plasticity in functional traits determining competitive ability and spatial distribution: a case from desert.

Xie Jiang-Bo JB Xu Gui-Qing GQ Jenerette G Darrel GD Bai Yong-fei YF Wang Zhong-Yuan ZY Li Yan Y

Scientific reports 20150720

Species competitive abilities and their distributions are closely related to functional traits such as biomass allocation patterns. When we consider how nutrient supply affects competitive abilities, quantifying the apparent and true plasticity in functional traits is important because the allometric relationships among traits are universal in plants. We propose to integrate the notion of allometry and the classical reaction norm into a composite theoretical framework that quantifies the apparen ...[more]

PMID: 26190745

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Apparent plasticity in functional traits determining competitive ability and spatial distribution: a case from desert.

Publications

Apparent plasticity in functional traits determining competitive ability and spatial distribution: a case from desert.

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