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    Rights statement: This is the author’s version of a work that was accepted for publication in Current Cell Biology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Current Cell Biology, 27, (2), 2017 DOI: 10.1016/j.cub.2016.10.062

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Human disruption of coral reef trophic structure

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Human disruption of coral reef trophic structure. / Graham, Nicholas Anthony James; McClanahan, Tim R.; MacNeil, M. Aaron; Wilson, Shaun K.; Cinner, Joshua Eli; Huchery, Cindy; Holmes, Thomas H.

In: Current Biology, Vol. 27, No. 2, 23.01.2017, p. 231-236.

Research output: Contribution to journalJournal article

Harvard

Graham, NAJ, McClanahan, TR, MacNeil, MA, Wilson, SK, Cinner, JE, Huchery, C & Holmes, TH 2017, 'Human disruption of coral reef trophic structure', Current Biology, vol. 27, no. 2, pp. 231-236. https://doi.org/10.1016/j.cub.2016.10.062

APA

Graham, N. A. J., McClanahan, T. R., MacNeil, M. A., Wilson, S. K., Cinner, J. E., Huchery, C., & Holmes, T. H. (2017). Human disruption of coral reef trophic structure. Current Biology, 27(2), 231-236. https://doi.org/10.1016/j.cub.2016.10.062

Vancouver

Graham NAJ, McClanahan TR, MacNeil MA, Wilson SK, Cinner JE, Huchery C et al. Human disruption of coral reef trophic structure. Current Biology. 2017 Jan 23;27(2):231-236. https://doi.org/10.1016/j.cub.2016.10.062

Author

Graham, Nicholas Anthony James ; McClanahan, Tim R. ; MacNeil, M. Aaron ; Wilson, Shaun K. ; Cinner, Joshua Eli ; Huchery, Cindy ; Holmes, Thomas H. / Human disruption of coral reef trophic structure. In: Current Biology. 2017 ; Vol. 27, No. 2. pp. 231-236.

Bibtex

@article{6bcf19c849dd497c9a5b01965a8f1bcc,
title = "Human disruption of coral reef trophic structure",
abstract = "The distribution of biomass among trophic levels provides a theoretical basis for understanding energy flow and the hierarchical structure of animal communities. In the absence of energy subsidies [1], bottom-heavy trophic pyramids are expected to predominate, based on energy transfer efficiency [2] and empirical evidence from multiple ecosystems [3]. However, the predicted pyramid of biomass distribution among trophic levels may be disrupted through trophic replacement by alternative organisms in the ecosystem, trophic cascades, and humans preferentially impacting specific trophic levels [4, 5 and 6]. Using empirical data spanning >250 coral reefs, we show how trophic pyramid shape varies given human-mediated gradients along two orders of magnitude in reef fish biomass. Mean trophic level of the assemblage increased modestly with decreasing biomass, contrary to predictions of fishing down the food web [7]. The mean trophic level pattern is explained by trophic replacement of herbivorous fish by sea urchins at low biomass and the accumulation of slow-growing, large-bodied, herbivorous fish at high biomass. Further, at high biomass, particularly where fishers are not selectively removing higher trophic level individuals, a concave trophic distribution emerges. The concave trophic distribution implies a more direct link between lower and upper trophic levels, which may confer greater energy efficiency. This trophic distribution emerges when community biomass exceeds ∼650 kg/ha, suggesting that fisheries for upper trophic level species will only be supported under lightly fished scenarios.",
keywords = "trophic pyramids, coral reef ecology, trophic replacement, trophic cascades, fisheries management, energetics, wilderness, coral reef fishes",
author = "Graham, {Nicholas Anthony James} and McClanahan, {Tim R.} and MacNeil, {M. Aaron} and Wilson, {Shaun K.} and Cinner, {Joshua Eli} and Cindy Huchery and Holmes, {Thomas H.}",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Current Cell Biology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Current Cell Biology, 27, (2) , 2017 DOI: 10.1016/j.cub.2016.10.062",
year = "2017",
month = jan
day = "23",
doi = "10.1016/j.cub.2016.10.062",
language = "English",
volume = "27",
pages = "231--236",
journal = "Current biology : CB",
issn = "0960-9822",
publisher = "CELL PRESS",
number = "2",

}

RIS

TY - JOUR

T1 - Human disruption of coral reef trophic structure

AU - Graham, Nicholas Anthony James

AU - McClanahan, Tim R.

AU - MacNeil, M. Aaron

AU - Wilson, Shaun K.

AU - Cinner, Joshua Eli

AU - Huchery, Cindy

AU - Holmes, Thomas H.

N1 - This is the author’s version of a work that was accepted for publication in Current Cell Biology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Current Cell Biology, 27, (2) , 2017 DOI: 10.1016/j.cub.2016.10.062

PY - 2017/1/23

Y1 - 2017/1/23

N2 - The distribution of biomass among trophic levels provides a theoretical basis for understanding energy flow and the hierarchical structure of animal communities. In the absence of energy subsidies [1], bottom-heavy trophic pyramids are expected to predominate, based on energy transfer efficiency [2] and empirical evidence from multiple ecosystems [3]. However, the predicted pyramid of biomass distribution among trophic levels may be disrupted through trophic replacement by alternative organisms in the ecosystem, trophic cascades, and humans preferentially impacting specific trophic levels [4, 5 and 6]. Using empirical data spanning >250 coral reefs, we show how trophic pyramid shape varies given human-mediated gradients along two orders of magnitude in reef fish biomass. Mean trophic level of the assemblage increased modestly with decreasing biomass, contrary to predictions of fishing down the food web [7]. The mean trophic level pattern is explained by trophic replacement of herbivorous fish by sea urchins at low biomass and the accumulation of slow-growing, large-bodied, herbivorous fish at high biomass. Further, at high biomass, particularly where fishers are not selectively removing higher trophic level individuals, a concave trophic distribution emerges. The concave trophic distribution implies a more direct link between lower and upper trophic levels, which may confer greater energy efficiency. This trophic distribution emerges when community biomass exceeds ∼650 kg/ha, suggesting that fisheries for upper trophic level species will only be supported under lightly fished scenarios.

AB - The distribution of biomass among trophic levels provides a theoretical basis for understanding energy flow and the hierarchical structure of animal communities. In the absence of energy subsidies [1], bottom-heavy trophic pyramids are expected to predominate, based on energy transfer efficiency [2] and empirical evidence from multiple ecosystems [3]. However, the predicted pyramid of biomass distribution among trophic levels may be disrupted through trophic replacement by alternative organisms in the ecosystem, trophic cascades, and humans preferentially impacting specific trophic levels [4, 5 and 6]. Using empirical data spanning >250 coral reefs, we show how trophic pyramid shape varies given human-mediated gradients along two orders of magnitude in reef fish biomass. Mean trophic level of the assemblage increased modestly with decreasing biomass, contrary to predictions of fishing down the food web [7]. The mean trophic level pattern is explained by trophic replacement of herbivorous fish by sea urchins at low biomass and the accumulation of slow-growing, large-bodied, herbivorous fish at high biomass. Further, at high biomass, particularly where fishers are not selectively removing higher trophic level individuals, a concave trophic distribution emerges. The concave trophic distribution implies a more direct link between lower and upper trophic levels, which may confer greater energy efficiency. This trophic distribution emerges when community biomass exceeds ∼650 kg/ha, suggesting that fisheries for upper trophic level species will only be supported under lightly fished scenarios.

KW - trophic pyramids

KW - coral reef ecology

KW - trophic replacement

KW - trophic cascades

KW - fisheries management

KW - energetics

KW - wilderness

KW - coral reef fishes

U2 - 10.1016/j.cub.2016.10.062

DO - 10.1016/j.cub.2016.10.062

M3 - Journal article

VL - 27

SP - 231

EP - 236

JO - Current biology : CB

JF - Current biology : CB

SN - 0960-9822

IS - 2

ER -