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Density-dependent effects of predator species-richness in diversity-function studies.

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Density-dependent effects of predator species-richness in diversity-function studies. / Griffiths, Georgianne J. K.; Wilby, Andy; Crawley, Michael J. et al.
In: Ecology, Vol. 89, No. 11, 11.2008, p. 2986-2993.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Griffiths, GJK, Wilby, A, Crawley, MJ & Thomas, MB 2008, 'Density-dependent effects of predator species-richness in diversity-function studies.', Ecology, vol. 89, no. 11, pp. 2986-2993. https://doi.org/10.1890/08-0685.1

APA

Griffiths, G. J. K., Wilby, A., Crawley, M. J., & Thomas, M. B. (2008). Density-dependent effects of predator species-richness in diversity-function studies. Ecology, 89(11), 2986-2993. https://doi.org/10.1890/08-0685.1

Vancouver

Griffiths GJK, Wilby A, Crawley MJ, Thomas MB. Density-dependent effects of predator species-richness in diversity-function studies. Ecology. 2008 Nov;89(11):2986-2993. doi: 10.1890/08-0685.1

Author

Griffiths, Georgianne J. K. ; Wilby, Andy ; Crawley, Michael J. et al. / Density-dependent effects of predator species-richness in diversity-function studies. In: Ecology. 2008 ; Vol. 89, No. 11. pp. 2986-2993.

Bibtex

@article{e994cd119f57480d9c59a1e95f692e89,
title = "Density-dependent effects of predator species-richness in diversity-function studies.",
abstract = "Ecological systems often exhibit a positive but saturating diversity–function curve. Variation in the mechanisms generating this relationship can alter the slope and variance of the curve, with implications for the optimal management of biodiversity for ecosystem services. In biological control, prevalence of selection effects supports augmentation of the most effective natural enemy, but complementarity effects support augmentation of natural enemy diversity. Optimization of biological control strategies from the results of diversity–function studies is limited because few consider changes in function with relative or absolute changes in abundance, and many confound the relative importance of richness and density through experimental designs (additive and substitutive). By manipulating species richness across an abundance gradient we show that effects of species richness are density dependent and indicate how this may be incorporated into experimental designs or models predicting resource consumption in diverse communities. Furthermore, the underlying mechanisms causing an observed diversity–function response, and its associated variation, changed across the richness–abundance gradient. Finally, species-rich assemblages provided higher levels of minimum function than species-poor assemblages, without any compromise on the maximum function possible.",
keywords = "additive, biological control, complementarity, interference, resource partitioning, selection, substitutive",
author = "Griffiths, {Georgianne J. K.} and Andy Wilby and Crawley, {Michael J.} and Thomas, {Matthew B.}",
year = "2008",
month = nov,
doi = "10.1890/08-0685.1",
language = "English",
volume = "89",
pages = "2986--2993",
journal = "Ecology",
issn = "0012-9658",
publisher = "Ecological Society of America",
number = "11",

}

RIS

TY - JOUR

T1 - Density-dependent effects of predator species-richness in diversity-function studies.

AU - Griffiths, Georgianne J. K.

AU - Wilby, Andy

AU - Crawley, Michael J.

AU - Thomas, Matthew B.

PY - 2008/11

Y1 - 2008/11

N2 - Ecological systems often exhibit a positive but saturating diversity–function curve. Variation in the mechanisms generating this relationship can alter the slope and variance of the curve, with implications for the optimal management of biodiversity for ecosystem services. In biological control, prevalence of selection effects supports augmentation of the most effective natural enemy, but complementarity effects support augmentation of natural enemy diversity. Optimization of biological control strategies from the results of diversity–function studies is limited because few consider changes in function with relative or absolute changes in abundance, and many confound the relative importance of richness and density through experimental designs (additive and substitutive). By manipulating species richness across an abundance gradient we show that effects of species richness are density dependent and indicate how this may be incorporated into experimental designs or models predicting resource consumption in diverse communities. Furthermore, the underlying mechanisms causing an observed diversity–function response, and its associated variation, changed across the richness–abundance gradient. Finally, species-rich assemblages provided higher levels of minimum function than species-poor assemblages, without any compromise on the maximum function possible.

AB - Ecological systems often exhibit a positive but saturating diversity–function curve. Variation in the mechanisms generating this relationship can alter the slope and variance of the curve, with implications for the optimal management of biodiversity for ecosystem services. In biological control, prevalence of selection effects supports augmentation of the most effective natural enemy, but complementarity effects support augmentation of natural enemy diversity. Optimization of biological control strategies from the results of diversity–function studies is limited because few consider changes in function with relative or absolute changes in abundance, and many confound the relative importance of richness and density through experimental designs (additive and substitutive). By manipulating species richness across an abundance gradient we show that effects of species richness are density dependent and indicate how this may be incorporated into experimental designs or models predicting resource consumption in diverse communities. Furthermore, the underlying mechanisms causing an observed diversity–function response, and its associated variation, changed across the richness–abundance gradient. Finally, species-rich assemblages provided higher levels of minimum function than species-poor assemblages, without any compromise on the maximum function possible.

KW - additive

KW - biological control

KW - complementarity

KW - interference

KW - resource partitioning

KW - selection

KW - substitutive

UR - http://www.scopus.com/inward/record.url?scp=63849209904&partnerID=8YFLogxK

U2 - 10.1890/08-0685.1

DO - 10.1890/08-0685.1

M3 - Journal article

VL - 89

SP - 2986

EP - 2993

JO - Ecology

JF - Ecology

SN - 0012-9658

IS - 11

ER -