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Abundance and dominance become less predictable as species richness decreases

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Abundance and dominance become less predictable as species richness decreases. / Dornelas, Maria; Phillip, Dawn A. T.; Magurran, Anne E.

In: Global Ecology and Biogeography, Vol. 20, No. 6, 11.2011, p. 832-841.

Research output: Contribution to journalArticle

Harvard

Dornelas, M, Phillip, DAT & Magurran, AE 2011, 'Abundance and dominance become less predictable as species richness decreases' Global Ecology and Biogeography, vol. 20, no. 6, pp. 832-841. https://doi.org/10.1111/j.1466-8238.2010.00640.x

APA

Dornelas, M., Phillip, D. A. T., & Magurran, A. E. (2011). Abundance and dominance become less predictable as species richness decreases. Global Ecology and Biogeography, 20(6), 832-841. https://doi.org/10.1111/j.1466-8238.2010.00640.x

Vancouver

Dornelas M, Phillip DAT, Magurran AE. Abundance and dominance become less predictable as species richness decreases. Global Ecology and Biogeography. 2011 Nov;20(6):832-841. https://doi.org/10.1111/j.1466-8238.2010.00640.x

Author

Dornelas, Maria ; Phillip, Dawn A. T. ; Magurran, Anne E. / Abundance and dominance become less predictable as species richness decreases. In: Global Ecology and Biogeography. 2011 ; Vol. 20, No. 6. pp. 832-841.

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@article{9948f488768549dfb95def439489eb96,
title = "Abundance and dominance become less predictable as species richness decreases",
abstract = "Aim To test the hypothesis that communities with higher diversity have more predictable properties by examining patterns of community structure along a species richness gradient.Location Trinidad and Tobago (11 degrees 00 N, 61 degrees 00 W), on the South American continental shelf, opposite the Orinoco River delta, north-east Venezuela.Methods We used quantile regressions to investigate how three total abundance, absolute and relative dominance measures - numerical abundance, biomass and energy use, respectively - change across a species richness gradient. We investigated which allocation rule best mimics community assembly in this species richness gradient by examining the abundance of the dominant species and comparing it with predictions of niche apportionment models.Results All measures of total abundance increase on average across the gradient, but the upper limit remains constant. On average, absolute dominance is constant, but the distance between the upper and lower limits decreases along the gradient. Relative dominance decreases with species richness. Observed dominance patterns are best described by Tokeshi's random fraction model.Main conclusions Our results show that both total abundance and absolute dominance become increasingly variable as biodiversity decreases. Consequently, our study suggests that ecosystem properties are less predictable when biodiversity is lower.",
author = "Maria Dornelas and Phillip, {Dawn A. T.} and Magurran, {Anne E.}",
year = "2011",
month = "11",
doi = "10.1111/j.1466-8238.2010.00640.x",
language = "English",
volume = "20",
pages = "832--841",
journal = "Global Ecology and Biogeography",
issn = "1466-822X",
publisher = "Wiley-Blackwell",
number = "6",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Abundance and dominance become less predictable as species richness decreases

AU - Dornelas, Maria

AU - Phillip, Dawn A. T.

AU - Magurran, Anne E.

PY - 2011/11

Y1 - 2011/11

N2 - Aim To test the hypothesis that communities with higher diversity have more predictable properties by examining patterns of community structure along a species richness gradient.Location Trinidad and Tobago (11 degrees 00 N, 61 degrees 00 W), on the South American continental shelf, opposite the Orinoco River delta, north-east Venezuela.Methods We used quantile regressions to investigate how three total abundance, absolute and relative dominance measures - numerical abundance, biomass and energy use, respectively - change across a species richness gradient. We investigated which allocation rule best mimics community assembly in this species richness gradient by examining the abundance of the dominant species and comparing it with predictions of niche apportionment models.Results All measures of total abundance increase on average across the gradient, but the upper limit remains constant. On average, absolute dominance is constant, but the distance between the upper and lower limits decreases along the gradient. Relative dominance decreases with species richness. Observed dominance patterns are best described by Tokeshi's random fraction model.Main conclusions Our results show that both total abundance and absolute dominance become increasingly variable as biodiversity decreases. Consequently, our study suggests that ecosystem properties are less predictable when biodiversity is lower.

AB - Aim To test the hypothesis that communities with higher diversity have more predictable properties by examining patterns of community structure along a species richness gradient.Location Trinidad and Tobago (11 degrees 00 N, 61 degrees 00 W), on the South American continental shelf, opposite the Orinoco River delta, north-east Venezuela.Methods We used quantile regressions to investigate how three total abundance, absolute and relative dominance measures - numerical abundance, biomass and energy use, respectively - change across a species richness gradient. We investigated which allocation rule best mimics community assembly in this species richness gradient by examining the abundance of the dominant species and comparing it with predictions of niche apportionment models.Results All measures of total abundance increase on average across the gradient, but the upper limit remains constant. On average, absolute dominance is constant, but the distance between the upper and lower limits decreases along the gradient. Relative dominance decreases with species richness. Observed dominance patterns are best described by Tokeshi's random fraction model.Main conclusions Our results show that both total abundance and absolute dominance become increasingly variable as biodiversity decreases. Consequently, our study suggests that ecosystem properties are less predictable when biodiversity is lower.

U2 - 10.1111/j.1466-8238.2010.00640.x

DO - 10.1111/j.1466-8238.2010.00640.x

M3 - Article

VL - 20

SP - 832

EP - 841

JO - Global Ecology and Biogeography

T2 - Global Ecology and Biogeography

JF - Global Ecology and Biogeography

SN - 1466-822X

IS - 6

ER -

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ID: 18742103