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  • Letourneur-etal-revised-2017

    Rights statement: The final publication is available at Springer via http://dx.doi.org/10.1007/s00227-017-3272-0

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Coral reef degradation alters the isotopic niche of reef fishes

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Coral reef degradation alters the isotopic niche of reef fishes. / Letourneur, Yves; Briand, Marine; Graham, Nicholas Anthony James.

In: Marine Biology, Vol. 164, 12.2017, p. 224-233.

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Letourneur, Yves ; Briand, Marine ; Graham, Nicholas Anthony James. / Coral reef degradation alters the isotopic niche of reef fishes. In: Marine Biology. 2017 ; Vol. 164. pp. 224-233.

Bibtex

@article{3c77687d468d4e739573de7f99d75015,
title = "Coral reef degradation alters the isotopic niche of reef fishes",
abstract = "The degradation of coral reefs is widely reported, yet there is a poor understanding of the adaptability of reef fishes to cope with benthic change. We tested the effects of coral reef degradation on the feeding plasticity of four reef fish species. We used isotopic niche sizes and mean δ15N and δ13C values of each species in two coral reefs that differed in benthic condition. The species chosen have contrasting feeding strategies; Chaetodon lunulatus (corallivore), Chrysiptera rollandi (zooplanktivore), Halichoeres melanurus (invertivore) and Zebrasoma velifer (herbivore). We predicted that the corallivore would have a lower mean δ15N value and a smaller isotopic niche size in the degraded reef, that the herbivore and the invertivore might have a larger isotopic niche size and/or a different mean δ13C value, whereas the zooplanktivore might be indifferent since the species is not linked to coral degradation. Some results matched our predictions; C. lunulatus had a smaller niche size on the degraded reef, but no difference in mean δ15N and δ13C values, and H. melanurus displayed an increase in niche size and a lower mean δ15N value on the degraded reef. Some other results were contrary to our predictions; whereas Z. velifer and C. rollandi had smaller mean δ13C values but no difference in niche size. Our findings suggest there may be feeding plasticity to maintain a similar diet despite contrasting habitat characteristics, with different amplitude depending on species. Such findings suggest that certain species guilds would probably adapt to changes linked to habitat degradation.",
author = "Yves Letourneur and Marine Briand and Graham, {Nicholas Anthony James}",
note = "The final publication is available at Springer via http://dx.doi.org/10.1007/s00227-017-3272-0",
year = "2017",
month = dec,
doi = "10.1007/s00227-017-3272-0",
language = "English",
volume = "164",
pages = "224--233",
journal = "Marine Biology",
issn = "0025-3162",
publisher = "Springer Verlag",

}

RIS

TY - JOUR

T1 - Coral reef degradation alters the isotopic niche of reef fishes

AU - Letourneur, Yves

AU - Briand, Marine

AU - Graham, Nicholas Anthony James

N1 - The final publication is available at Springer via http://dx.doi.org/10.1007/s00227-017-3272-0

PY - 2017/12

Y1 - 2017/12

N2 - The degradation of coral reefs is widely reported, yet there is a poor understanding of the adaptability of reef fishes to cope with benthic change. We tested the effects of coral reef degradation on the feeding plasticity of four reef fish species. We used isotopic niche sizes and mean δ15N and δ13C values of each species in two coral reefs that differed in benthic condition. The species chosen have contrasting feeding strategies; Chaetodon lunulatus (corallivore), Chrysiptera rollandi (zooplanktivore), Halichoeres melanurus (invertivore) and Zebrasoma velifer (herbivore). We predicted that the corallivore would have a lower mean δ15N value and a smaller isotopic niche size in the degraded reef, that the herbivore and the invertivore might have a larger isotopic niche size and/or a different mean δ13C value, whereas the zooplanktivore might be indifferent since the species is not linked to coral degradation. Some results matched our predictions; C. lunulatus had a smaller niche size on the degraded reef, but no difference in mean δ15N and δ13C values, and H. melanurus displayed an increase in niche size and a lower mean δ15N value on the degraded reef. Some other results were contrary to our predictions; whereas Z. velifer and C. rollandi had smaller mean δ13C values but no difference in niche size. Our findings suggest there may be feeding plasticity to maintain a similar diet despite contrasting habitat characteristics, with different amplitude depending on species. Such findings suggest that certain species guilds would probably adapt to changes linked to habitat degradation.

AB - The degradation of coral reefs is widely reported, yet there is a poor understanding of the adaptability of reef fishes to cope with benthic change. We tested the effects of coral reef degradation on the feeding plasticity of four reef fish species. We used isotopic niche sizes and mean δ15N and δ13C values of each species in two coral reefs that differed in benthic condition. The species chosen have contrasting feeding strategies; Chaetodon lunulatus (corallivore), Chrysiptera rollandi (zooplanktivore), Halichoeres melanurus (invertivore) and Zebrasoma velifer (herbivore). We predicted that the corallivore would have a lower mean δ15N value and a smaller isotopic niche size in the degraded reef, that the herbivore and the invertivore might have a larger isotopic niche size and/or a different mean δ13C value, whereas the zooplanktivore might be indifferent since the species is not linked to coral degradation. Some results matched our predictions; C. lunulatus had a smaller niche size on the degraded reef, but no difference in mean δ15N and δ13C values, and H. melanurus displayed an increase in niche size and a lower mean δ15N value on the degraded reef. Some other results were contrary to our predictions; whereas Z. velifer and C. rollandi had smaller mean δ13C values but no difference in niche size. Our findings suggest there may be feeding plasticity to maintain a similar diet despite contrasting habitat characteristics, with different amplitude depending on species. Such findings suggest that certain species guilds would probably adapt to changes linked to habitat degradation.

U2 - 10.1007/s00227-017-3272-0

DO - 10.1007/s00227-017-3272-0

M3 - Journal article

VL - 164

SP - 224

EP - 233

JO - Marine Biology

JF - Marine Biology

SN - 0025-3162

ER -