Effects of positive interactions, size symmetry of competition and abiotic stress on self-thinning in simulated plant populations.

Annals of Botany
Cheng-Jin ChuGang Wang

Abstract

Competition drives self-thinning (density-dependent mortality) in crowded plant populations. Facilitative interactions have been shown to affect many processes in plant populations and communities, but their effects on self-thinning trajectories have not been investigated. Using an individual-based 'zone-of-influence' model, we studied the potential effects of the size symmetry of competition, abiotic stress and facilitation on self-thinning trajectories in plant monocultures. In the model, abiotic stress reduced the growth of all individuals and facilitation ameliorated the effects of stress on interacting individuals. Abiotic stress made the log biomass-log density relationship during self-thinning steeper, but this effect was reduced by positive interactions among individuals. Size-asymmetric competition also influenced the self-thinning slope. Although competition drives self-thinning, its course can be affected by abiotic stress, facilitation and competitive symmetry.

References

Oct 11, 1994·Proceedings of the National Academy of Sciences of the United States of America·C L BallaréR D Vierstra
Nov 13, 2002·Proceedings. Biological Sciences·Peter StollToshihiko Hara
Dec 24, 2002·Proceedings. Biological Sciences·Jane Molofsky, James D Bever
May 8, 2007·Ecology·Craig R WhiteTim M Blackburn
Apr 27, 2010·Journal of Theoretical Biology·Markku Larjavaara
Feb 1, 1998·Oecologia·Susanne Schwinning, Jacob Weiner

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Citations

May 16, 2012·Proceedings of the National Academy of Sciences of the United States of America·Jianming DengJames H Brown
Nov 7, 2019·Ecology and Evolution·Zhe-Xuan FanShao-Lin Peng
Feb 23, 2020·Ecology and Evolution·Zhengzhong ZhangYang Wang

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