Coexistence of competing stage-structured populations.

Masami Fujiwara; Georgia Pfeiffer; May Boggess; Sarah Day; Jay Walton

doi:10.1038/srep00107

Coexistence of competing stage-structured populations.

Masami Fujiwara, Georgia Pfeiffer, May Boggess, Sarah Day, Jay Walton

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18 Scopus citations

Abstract

This paper analyzes the stability of a coexistence equilibrium point of a model for competition between two stage-structured populations. In this model, for each population, competition for resources may affect any one of the following population parameters: reproduction, juvenile survival, maturation rate, or adult survival. The results show that the competitive strength of a population is affected by (1) the ratio of the population parameter influenced by competition under no resource limitation (maximum compensatory capacity) over the same parameter under a resource limitation due to competition (equilibrium rate) and (2) the ratio of interspecific competition over intraspecific competition; this ratio was previously shown to depend on resource-use overlap. The former ratio, which we define as fitness, can be equalized by adjusting organisms' life history strategies, thereby promoting coexistence. We conclude that in addition to niche differentiation among populations, the life history strategies of organisms play an important role in coexistence.

Original language	English (US)
Journal	Scientific Reports
Volume	1
Issue number	1
DOIs	https://doi.org/10.1038/srep00107
State	Published - Oct 5 2011
Externally published	Yes

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10.1038/srep00107

https://repository.kaust.edu.sa/bitstream/10754/596778/1/PMC3216590.pdf

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@article{83009a54be5c49b1847346e875700009,

title = "Coexistence of competing stage-structured populations.",

abstract = "This paper analyzes the stability of a coexistence equilibrium point of a model for competition between two stage-structured populations. In this model, for each population, competition for resources may affect any one of the following population parameters: reproduction, juvenile survival, maturation rate, or adult survival. The results show that the competitive strength of a population is affected by (1) the ratio of the population parameter influenced by competition under no resource limitation (maximum compensatory capacity) over the same parameter under a resource limitation due to competition (equilibrium rate) and (2) the ratio of interspecific competition over intraspecific competition; this ratio was previously shown to depend on resource-use overlap. The former ratio, which we define as fitness, can be equalized by adjusting organisms' life history strategies, thereby promoting coexistence. We conclude that in addition to niche differentiation among populations, the life history strategies of organisms play an important role in coexistence.",

author = "Masami Fujiwara and Georgia Pfeiffer and May Boggess and Sarah Day and Jay Walton",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-C1-016-04 Acknowledgements: We thank editor and anonymous reviewers for providing comments. MF and JW were supported in part by Award No. KUS-C1-016-04, made by King Abdullah University of Science and Technology (KAUST). GP, MB, and JW were supported in part by the NSF REU program DMS-0850470. GP and SD were supported by NSF DMS-0811370. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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doi = "10.1038/srep00107",

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AU - Fujiwara, Masami

AU - Pfeiffer, Georgia

AU - Boggess, May

AU - Day, Sarah

AU - Walton, Jay

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-C1-016-04 Acknowledgements: We thank editor and anonymous reviewers for providing comments. MF and JW were supported in part by Award No. KUS-C1-016-04, made by King Abdullah University of Science and Technology (KAUST). GP, MB, and JW were supported in part by the NSF REU program DMS-0850470. GP and SD were supported by NSF DMS-0811370. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2011/10/5

Y1 - 2011/10/5

N2 - This paper analyzes the stability of a coexistence equilibrium point of a model for competition between two stage-structured populations. In this model, for each population, competition for resources may affect any one of the following population parameters: reproduction, juvenile survival, maturation rate, or adult survival. The results show that the competitive strength of a population is affected by (1) the ratio of the population parameter influenced by competition under no resource limitation (maximum compensatory capacity) over the same parameter under a resource limitation due to competition (equilibrium rate) and (2) the ratio of interspecific competition over intraspecific competition; this ratio was previously shown to depend on resource-use overlap. The former ratio, which we define as fitness, can be equalized by adjusting organisms' life history strategies, thereby promoting coexistence. We conclude that in addition to niche differentiation among populations, the life history strategies of organisms play an important role in coexistence.

AB - This paper analyzes the stability of a coexistence equilibrium point of a model for competition between two stage-structured populations. In this model, for each population, competition for resources may affect any one of the following population parameters: reproduction, juvenile survival, maturation rate, or adult survival. The results show that the competitive strength of a population is affected by (1) the ratio of the population parameter influenced by competition under no resource limitation (maximum compensatory capacity) over the same parameter under a resource limitation due to competition (equilibrium rate) and (2) the ratio of interspecific competition over intraspecific competition; this ratio was previously shown to depend on resource-use overlap. The former ratio, which we define as fitness, can be equalized by adjusting organisms' life history strategies, thereby promoting coexistence. We conclude that in addition to niche differentiation among populations, the life history strategies of organisms play an important role in coexistence.

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JO - Scientific Reports

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Coexistence of competing stage-structured populations.

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