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Divergent biodiversity change within ecosystems

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Divergent biodiversity change within ecosystems. / Magurran, Anne Elizabeth; Deacon, Amy Elizabeth; Moyes, Faye Helen; Shimadzu, Hideyasu; Azeredo de Dornelas, Maria Ana; Phillip, Dawn; Ramnarine, Indar.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 115, No. 8, 20.02.2018, p. 1843-1847.

Research output: Contribution to journalArticle

Harvard

Magurran, AE, Deacon, AE, Moyes, FH, Shimadzu, H, Azeredo de Dornelas, MA, Phillip, D & Ramnarine, I 2018, 'Divergent biodiversity change within ecosystems', Proceedings of the National Academy of Sciences of the United States of America, vol. 115, no. 8, pp. 1843-1847. https://doi.org/10.1073/pnas.1712594115

APA

Magurran, A. E., Deacon, A. E., Moyes, F. H., Shimadzu, H., Azeredo de Dornelas, M. A., Phillip, D., & Ramnarine, I. (2018). Divergent biodiversity change within ecosystems. Proceedings of the National Academy of Sciences of the United States of America, 115(8), 1843-1847. https://doi.org/10.1073/pnas.1712594115

Vancouver

Magurran AE, Deacon AE, Moyes FH, Shimadzu H, Azeredo de Dornelas MA, Phillip D et al. Divergent biodiversity change within ecosystems. Proceedings of the National Academy of Sciences of the United States of America. 2018 Feb 20;115(8):1843-1847. https://doi.org/10.1073/pnas.1712594115

Author

Magurran, Anne Elizabeth ; Deacon, Amy Elizabeth ; Moyes, Faye Helen ; Shimadzu, Hideyasu ; Azeredo de Dornelas, Maria Ana ; Phillip, Dawn ; Ramnarine, Indar. / Divergent biodiversity change within ecosystems. In: Proceedings of the National Academy of Sciences of the United States of America. 2018 ; Vol. 115, No. 8. pp. 1843-1847.

Bibtex - Download

@article{aa6d695a8d734a7c9e0438371568530a,
title = "Divergent biodiversity change within ecosystems",
abstract = "The Earth’s ecosystems are under unprecedented pressure, yet the nature of contemporary biodiversity change is not well understood. Growing evidence that community size is regulated highlights the need for improved understanding of community dynamics. As stability in community size could be underpinned by marked temporal turnover, a key question is the extent to which changes in both biodiversity dimensions (temporal α- and temporal β-diversity) covary within and among the assemblages that comprise natural communities. Here, we draw on a multiassemblage dataset (encompassing vertebrates, invertebrates, and unicellular plants) from a tropical freshwater ecosystem and employ a cyclic shift randomization to assess whether any directional change in temporal α-diversity and temporal β-diversity exceeds baseline levels. In the majority of cases, α-diversity remains stable over the 5-y time frame of our analysis, with little evidence for systematic change at the community level. In contrast, temporal β-diversity changes are more prevalent, and the two diversity dimensions are decoupled at both the within- and among-assemblage level. Consequently, a pressing research challenge is to establish how turnover supports regulation and when elevated temporal β-diversity jeopardizes community integrity.",
keywords = "Biodiversity change, Tropical ecology, Freshwater, Temporal turnover, Community-level regulation",
author = "Magurran, {Anne Elizabeth} and Deacon, {Amy Elizabeth} and Moyes, {Faye Helen} and Hideyasu Shimadzu and {Azeredo de Dornelas}, {Maria Ana} and Dawn Phillip and Indar Ramnarine",
note = "This project was funded by the European Research Council (AdG BioTIME 250189 and PoC BioCHANGE 727440). A.E.M. also acknowledges support from the Royal Society and M.D. from the Scottish Funding Council (Marine Alliance for Science and Technology for Scotland Grant HR09011).",
year = "2018",
month = "2",
day = "20",
doi = "10.1073/pnas.1712594115",
language = "English",
volume = "115",
pages = "1843--1847",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
publisher = "NATL ACAD SCIENCES",
number = "8",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Divergent biodiversity change within ecosystems

AU - Magurran, Anne Elizabeth

AU - Deacon, Amy Elizabeth

AU - Moyes, Faye Helen

AU - Shimadzu, Hideyasu

AU - Azeredo de Dornelas, Maria Ana

AU - Phillip, Dawn

AU - Ramnarine, Indar

N1 - This project was funded by the European Research Council (AdG BioTIME 250189 and PoC BioCHANGE 727440). A.E.M. also acknowledges support from the Royal Society and M.D. from the Scottish Funding Council (Marine Alliance for Science and Technology for Scotland Grant HR09011).

PY - 2018/2/20

Y1 - 2018/2/20

N2 - The Earth’s ecosystems are under unprecedented pressure, yet the nature of contemporary biodiversity change is not well understood. Growing evidence that community size is regulated highlights the need for improved understanding of community dynamics. As stability in community size could be underpinned by marked temporal turnover, a key question is the extent to which changes in both biodiversity dimensions (temporal α- and temporal β-diversity) covary within and among the assemblages that comprise natural communities. Here, we draw on a multiassemblage dataset (encompassing vertebrates, invertebrates, and unicellular plants) from a tropical freshwater ecosystem and employ a cyclic shift randomization to assess whether any directional change in temporal α-diversity and temporal β-diversity exceeds baseline levels. In the majority of cases, α-diversity remains stable over the 5-y time frame of our analysis, with little evidence for systematic change at the community level. In contrast, temporal β-diversity changes are more prevalent, and the two diversity dimensions are decoupled at both the within- and among-assemblage level. Consequently, a pressing research challenge is to establish how turnover supports regulation and when elevated temporal β-diversity jeopardizes community integrity.

AB - The Earth’s ecosystems are under unprecedented pressure, yet the nature of contemporary biodiversity change is not well understood. Growing evidence that community size is regulated highlights the need for improved understanding of community dynamics. As stability in community size could be underpinned by marked temporal turnover, a key question is the extent to which changes in both biodiversity dimensions (temporal α- and temporal β-diversity) covary within and among the assemblages that comprise natural communities. Here, we draw on a multiassemblage dataset (encompassing vertebrates, invertebrates, and unicellular plants) from a tropical freshwater ecosystem and employ a cyclic shift randomization to assess whether any directional change in temporal α-diversity and temporal β-diversity exceeds baseline levels. In the majority of cases, α-diversity remains stable over the 5-y time frame of our analysis, with little evidence for systematic change at the community level. In contrast, temporal β-diversity changes are more prevalent, and the two diversity dimensions are decoupled at both the within- and among-assemblage level. Consequently, a pressing research challenge is to establish how turnover supports regulation and when elevated temporal β-diversity jeopardizes community integrity.

KW - Biodiversity change

KW - Tropical ecology

KW - Freshwater

KW - Temporal turnover

KW - Community-level regulation

U2 - 10.1073/pnas.1712594115

DO - 10.1073/pnas.1712594115

M3 - Article

VL - 115

SP - 1843

EP - 1847

JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

SN - 0027-8424

IS - 8

ER -

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