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The geometric mean of relative abundance indices: a biodiversity measure with a difference

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The geometric mean of relative abundance indices : a biodiversity measure with a difference. / Buckland, Stephen Terrence; Studeny, Angelika Caroline; Magurran, Anne; Illian, Janine Baerbel; Newson, Stuart.

In: Ecosphere, Vol. 2, No. 9, 100, 02.09.2011.

Research output: Research - peer-reviewArticle

Harvard

Buckland, ST, Studeny, AC, Magurran, A, Illian, JB & Newson, S 2011, 'The geometric mean of relative abundance indices: a biodiversity measure with a difference' Ecosphere, vol 2, no. 9, 100. DOI: 10.1890/ES11-00186.1

APA

Buckland, S. T., Studeny, A. C., Magurran, A., Illian, J. B., & Newson, S. (2011). The geometric mean of relative abundance indices: a biodiversity measure with a difference. Ecosphere, 2(9), [100]. DOI: 10.1890/ES11-00186.1

Vancouver

Buckland ST, Studeny AC, Magurran A, Illian JB, Newson S. The geometric mean of relative abundance indices: a biodiversity measure with a difference. Ecosphere. 2011 Sep 2;2(9). 100. Available from, DOI: 10.1890/ES11-00186.1

Author

Buckland, Stephen Terrence ; Studeny, Angelika Caroline ; Magurran, Anne ; Illian, Janine Baerbel ; Newson, Stuart. / The geometric mean of relative abundance indices : a biodiversity measure with a difference. In: Ecosphere. 2011 ; Vol. 2, No. 9.

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@article{056e5f4de8c74e93beaaa77a7a745d91,
title = "The geometric mean of relative abundance indices: a biodiversity measure with a difference",
abstract = "The 2010 Biodiversity Target of the Convention on Biological Diversity (CBD), set in 2002, which stated that there should be ‘a significant reduction of the current rate of biodiversity loss' by 2010, highlighted the need for informative and tractable metrics that can be used to evaluate change in biological diversity. While the subsequent Aichi 2020 targets are more wide-ranging, they also seek to reduce the rate of biodiversity loss. The geometric mean of relative abundance indices, G, is increasingly being used to examine trends in biological diversity and to assess whether biodiversity targets are being met. Here, we explore the mathematical and statistical properties of G that make it useful for judging temporal change in biological diversity, and we discuss its advantages and limitations relative to other measures. We demonstrate that the index reflects trends in both abundance and evenness, and that it is not prone to bias when detectability of individuals varies by species. We note that it allows data from different surveys to be combined to generate a composite index. However, the index exhibits high variance and unstable behaviour when rarely-recorded species are included in the analyses.Read More: http://www.esajournals.org/doi/abs/10.1890/ES11-00186.1",
keywords = "Biodiversity measure, Evenness, Geometric mean, Relative abundance, 2010 Biodiversity Target, 2020 Aichi Biodiversity Targets",
author = "Buckland, {Stephen Terrence} and Studeny, {Angelika Caroline} and Anne Magurran and Illian, {Janine Baerbel} and Stuart Newson",
note = "This work is partly supported by the European Research Council",
year = "2011",
month = "9",
doi = "10.1890/ES11-00186.1",
volume = "2",
journal = "Ecosphere",
issn = "2150-8925",
publisher = "Ecological Society of America",
number = "9",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The geometric mean of relative abundance indices

T2 - Ecosphere

AU - Buckland,Stephen Terrence

AU - Studeny,Angelika Caroline

AU - Magurran,Anne

AU - Illian,Janine Baerbel

AU - Newson,Stuart

N1 - This work is partly supported by the European Research Council

PY - 2011/9/2

Y1 - 2011/9/2

N2 - The 2010 Biodiversity Target of the Convention on Biological Diversity (CBD), set in 2002, which stated that there should be ‘a significant reduction of the current rate of biodiversity loss' by 2010, highlighted the need for informative and tractable metrics that can be used to evaluate change in biological diversity. While the subsequent Aichi 2020 targets are more wide-ranging, they also seek to reduce the rate of biodiversity loss. The geometric mean of relative abundance indices, G, is increasingly being used to examine trends in biological diversity and to assess whether biodiversity targets are being met. Here, we explore the mathematical and statistical properties of G that make it useful for judging temporal change in biological diversity, and we discuss its advantages and limitations relative to other measures. We demonstrate that the index reflects trends in both abundance and evenness, and that it is not prone to bias when detectability of individuals varies by species. We note that it allows data from different surveys to be combined to generate a composite index. However, the index exhibits high variance and unstable behaviour when rarely-recorded species are included in the analyses.Read More: http://www.esajournals.org/doi/abs/10.1890/ES11-00186.1

AB - The 2010 Biodiversity Target of the Convention on Biological Diversity (CBD), set in 2002, which stated that there should be ‘a significant reduction of the current rate of biodiversity loss' by 2010, highlighted the need for informative and tractable metrics that can be used to evaluate change in biological diversity. While the subsequent Aichi 2020 targets are more wide-ranging, they also seek to reduce the rate of biodiversity loss. The geometric mean of relative abundance indices, G, is increasingly being used to examine trends in biological diversity and to assess whether biodiversity targets are being met. Here, we explore the mathematical and statistical properties of G that make it useful for judging temporal change in biological diversity, and we discuss its advantages and limitations relative to other measures. We demonstrate that the index reflects trends in both abundance and evenness, and that it is not prone to bias when detectability of individuals varies by species. We note that it allows data from different surveys to be combined to generate a composite index. However, the index exhibits high variance and unstable behaviour when rarely-recorded species are included in the analyses.Read More: http://www.esajournals.org/doi/abs/10.1890/ES11-00186.1

KW - Biodiversity measure

KW - Evenness

KW - Geometric mean

KW - Relative abundance

KW - 2010 Biodiversity Target

KW - 2020 Aichi Biodiversity Targets

U2 - 10.1890/ES11-00186.1

DO - 10.1890/ES11-00186.1

M3 - Article

VL - 2

JO - Ecosphere

JF - Ecosphere

SN - 2150-8925

IS - 9

M1 - 100

ER -

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ID: 13665977