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A signal of competitive dominance in mid-latitude herbaceous plant communities

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  • Jose A. Capitan, Universidad Politécnica de Madrid
  • ,
  • Sara Cuenda, Universidad Autónoma de Madrid
  • ,
  • Alejandro Ordonez
  • David Alonso, Ctr Adv Studies CEAB CSIC, Consejo Superior de Investigaciones Cientificas (CSIC), CSIC - Centre d'Estudis Avancats de Blanes (CEAB), Theoret & Computat Ecol

Understanding the main determinants of species coexistence across space and time is a central question in ecology. However, ecologists still know little about the scales and conditions at which biotic interactions matter and how these interact with the environment to structure species assemblages. Here we use recent theoretical developments to analyse plant distribution and trait data across Europe and find that plant height clustering is related to both evapotranspiration (ET) and gross primary productivity. This clustering is a signal of interspecies competition between plants, which is most evident in mid-latitude ecoregions, where conditions for growth (reflected in actual ET rates and gross primary productivities) are optimal. Away from this optimum, climate severity probably overrides the effect of competition, or other interactions become increasingly important. Our approach bridges the gap between species-rich competition theories and large-scale species distribution data analysis.

TidsskriftRoyal Society Open Science
Antal sider14
StatusUdgivet - 22 sep. 2021

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