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Conservation implications of forage base requirements of a marine predator population at carrying capacity

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Conservation implications of forage base requirements of a marine predator population at carrying capacity. / Dunn, Ruth; Bradley, Darcy; Heithaus, Michael R et al.
In: iScience, Vol. 25, No. 1, 103646, 21.01.2022.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Dunn, R, Bradley, D, Heithaus, MR, Caselle, JE & Papastamatiou, YP 2022, 'Conservation implications of forage base requirements of a marine predator population at carrying capacity', iScience, vol. 25, no. 1, 103646. https://doi.org/10.1016/j.isci.2021.103646

APA

Dunn, R., Bradley, D., Heithaus, M. R., Caselle, J. E., & Papastamatiou, Y. P. (2022). Conservation implications of forage base requirements of a marine predator population at carrying capacity. iScience, 25(1), Article 103646. https://doi.org/10.1016/j.isci.2021.103646

Vancouver

Dunn R, Bradley D, Heithaus MR, Caselle JE, Papastamatiou YP. Conservation implications of forage base requirements of a marine predator population at carrying capacity. iScience. 2022 Jan 21;25(1):103646. Epub 2021 Dec 16. doi: 10.1016/j.isci.2021.103646

Author

Dunn, Ruth ; Bradley, Darcy ; Heithaus, Michael R et al. / Conservation implications of forage base requirements of a marine predator population at carrying capacity. In: iScience. 2022 ; Vol. 25, No. 1.

Bibtex

@article{5a0e4c3cc962405ca47e5d47c9e9b247,
title = "Conservation implications of forage base requirements of a marine predator population at carrying capacity",
abstract = "Prey depletion may contribute to marine predator declines, yet the forage base required to sustain an unfished population of predatory fish at carrying capacity is unknown. We integrated demographic and physiological data within a Bayesian bioenergetic model to estimate annual consumption of a gray reef shark (Carcharhinus amblyrhynchos) population at a remote Pacific atoll (Palmyra Atoll) that are at carrying capacity. Furthermore, we estimated the proportion of the atoll's reef fish biomass production consumed by the gray reef sharks, assuming sharks either partially foraged pelagically (mean 7%), or solely within the reef environment (mean 52%). We then predicted the gray reef shark population potential of other, less remote Pacific Ocean coral reef islands, illustrating that current populations are substantially smaller than could be supported by their forage base. Our research highlights the utility of modeling how far predator population sizes are from their expected carrying capacity in informing marine conservation.",
keywords = "Biological sciences, Environmental science, Nature conservation, Physiology, Zoology",
author = "Ruth Dunn and Darcy Bradley and Heithaus, {Michael R} and Caselle, {Jennifer E} and Papastamatiou, {Yannis P}",
year = "2022",
month = jan,
day = "21",
doi = "10.1016/j.isci.2021.103646",
language = "English",
volume = "25",
journal = "iScience",
issn = "2589-0042",
publisher = "Elsevier Inc.",
number = "1",

}

RIS

TY - JOUR

T1 - Conservation implications of forage base requirements of a marine predator population at carrying capacity

AU - Dunn, Ruth

AU - Bradley, Darcy

AU - Heithaus, Michael R

AU - Caselle, Jennifer E

AU - Papastamatiou, Yannis P

PY - 2022/1/21

Y1 - 2022/1/21

N2 - Prey depletion may contribute to marine predator declines, yet the forage base required to sustain an unfished population of predatory fish at carrying capacity is unknown. We integrated demographic and physiological data within a Bayesian bioenergetic model to estimate annual consumption of a gray reef shark (Carcharhinus amblyrhynchos) population at a remote Pacific atoll (Palmyra Atoll) that are at carrying capacity. Furthermore, we estimated the proportion of the atoll's reef fish biomass production consumed by the gray reef sharks, assuming sharks either partially foraged pelagically (mean 7%), or solely within the reef environment (mean 52%). We then predicted the gray reef shark population potential of other, less remote Pacific Ocean coral reef islands, illustrating that current populations are substantially smaller than could be supported by their forage base. Our research highlights the utility of modeling how far predator population sizes are from their expected carrying capacity in informing marine conservation.

AB - Prey depletion may contribute to marine predator declines, yet the forage base required to sustain an unfished population of predatory fish at carrying capacity is unknown. We integrated demographic and physiological data within a Bayesian bioenergetic model to estimate annual consumption of a gray reef shark (Carcharhinus amblyrhynchos) population at a remote Pacific atoll (Palmyra Atoll) that are at carrying capacity. Furthermore, we estimated the proportion of the atoll's reef fish biomass production consumed by the gray reef sharks, assuming sharks either partially foraged pelagically (mean 7%), or solely within the reef environment (mean 52%). We then predicted the gray reef shark population potential of other, less remote Pacific Ocean coral reef islands, illustrating that current populations are substantially smaller than could be supported by their forage base. Our research highlights the utility of modeling how far predator population sizes are from their expected carrying capacity in informing marine conservation.

KW - Biological sciences

KW - Environmental science

KW - Nature conservation

KW - Physiology

KW - Zoology

U2 - 10.1016/j.isci.2021.103646

DO - 10.1016/j.isci.2021.103646

M3 - Journal article

VL - 25

JO - iScience

JF - iScience

SN - 2589-0042

IS - 1

M1 - 103646

ER -