Trait diversity promotes stability of community dynamics

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Trait diversity promotes stability of community dynamics. / Zhang, Lai; Thygesen, Uffe Høgsbro; Knudsen, Kim; Andersen, Ken Haste.

In: Theoretical Ecology, Vol. 6, No. 1, 2013, p. 57-69.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Zhang, Lai; Thygesen, Uffe Høgsbro; Knudsen, Kim; Andersen, Ken Haste / Trait diversity promotes stability of community dynamics.

In: Theoretical Ecology, Vol. 6, No. 1, 2013, p. 57-69.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{6751b21ab4fb4d7ea3858da2fdd19f9c,
title = "Trait diversity promotes stability of community dynamics",
publisher = "Springer Netherlands",
author = "Lai Zhang and Thygesen, {Uffe Høgsbro} and Kim Knudsen and Andersen, {Ken Haste}",
year = "2013",
doi = "10.1007/s12080-012-0160-6",
volume = "6",
number = "1",
pages = "57--69",
journal = "Theoretical Ecology",
issn = "1874-1738",

}

RIS

TY - JOUR

T1 - Trait diversity promotes stability of community dynamics

A1 - Zhang,Lai

A1 - Thygesen,Uffe Høgsbro

A1 - Knudsen,Kim

A1 - Andersen,Ken Haste

AU - Zhang,Lai

AU - Thygesen,Uffe Høgsbro

AU - Knudsen,Kim

AU - Andersen,Ken Haste

PB - Springer Netherlands

PY - 2013

Y1 - 2013

N2 - The theoretical exploration of how diversity influences stability has traditionally been approached by species-centric methods. Here we offer an alternative approach to the diversity–stability problem by examining the stability and dynamics of size and trait distributions of individuals. The analysis is performed by comparing the properties of two size spectrum models. The first model considers all individuals as belonging to the same “average” species, i.e., without a description of diversity. The second model introduces diversity by further considering individuals by a trait, here asymptotic body size. The dynamic properties of the models are described by a stability analysis of equilibrium solutions and by the non-equilibrium dynamics. We find that the introduction of trait diversity expands the set of parameters for which the equilibrium is stable and, if the community is unstable, makes the oscillations smaller, slower, and more regular. The stabilizing mechanism is the variation in growth rate between individuals with the same body size but different trait values.

AB - The theoretical exploration of how diversity influences stability has traditionally been approached by species-centric methods. Here we offer an alternative approach to the diversity–stability problem by examining the stability and dynamics of size and trait distributions of individuals. The analysis is performed by comparing the properties of two size spectrum models. The first model considers all individuals as belonging to the same “average” species, i.e., without a description of diversity. The second model introduces diversity by further considering individuals by a trait, here asymptotic body size. The dynamic properties of the models are described by a stability analysis of equilibrium solutions and by the non-equilibrium dynamics. We find that the introduction of trait diversity expands the set of parameters for which the equilibrium is stable and, if the community is unstable, makes the oscillations smaller, slower, and more regular. The stabilizing mechanism is the variation in growth rate between individuals with the same body size but different trait values.

KW - HASH(0x4b7c220)

KW - Life history

KW - Size spectra

KW - Structured population

KW - Trait-based modeling

U2 - 10.1007/s12080-012-0160-6

DO - 10.1007/s12080-012-0160-6

JO - Theoretical Ecology

JF - Theoretical Ecology

SN - 1874-1738

IS - 1

VL - 6

SP - 57

EP - 69

ER -