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  • A global perspective on the trophic geography of sharks

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    MunroePUB261.pdf (4.522Mb)
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    Accepted Manuscript (AM)
    Author(s)
    Bird, Christopher S
    Verissimo, Ana
    Magozzi, Sarah
    Abrantes, Katya G
    Aguilar, Alex
    Al-Reasi, Hassan
    Barnett, Adam
    Bethea, Dana M
    Biais, Gerard
    Borrell, Asuncion
    Bouchoucha, Marc
    Boyle, Mariah
    Brooks, Edward J
    Brunnschweiler, Juerg
    Bustamante, Paco
    Carlisle, Aaron
    Catarino, Diana
    Caut, Stephane
    Cherel, Yves
    Chouvelon, Tiphaine
    Churchill, Diana
    Ciancio, Javier
    Claes, Julien
    Colaco, Ana
    Courtney, Dean L
    Cresson, Pierre
    Daly, Ryan
    de Necker, Leigh
    Endo, Tetsuya
    Figueiredo, Ivone
    Frisch, Ashley J
    Hansen, Joan Holst
    Heithaus, Michael
    Hussey, Nigel E
    Iitembu, Johannes
    Juanes, Francis
    Kinney, Michael J
    Kiszka, Jeremy J
    Klarian, Sebastian A
    Kopp, Dorothee
    Leaf, Robert
    Li, Yunkai
    Lorrain, Anne
    Madigan, Daniel J
    Maljkovic, Aleksandra
    Malpica-Cruz, Luis
    Matich, Philip
    Meekan, Mark G
    Menard, Frederic
    Menezes, Gui M
    Munroe, Samantha EM
    Newman, Michael C
    Papastamatiou, Yannis P
    Pethybridge, Heidi
    Plumlee, Jeffrey D
    Polo-Silva, Carlos
    Quaeck-Davies, Katie
    Raoult, Vincent
    Reum, Jonathan
    Torres-Rojas, Yassir Eden
    Shiffman, David S
    Shipley, Oliver N
    Speed, Conrad W
    Staudinger, Michelle D
    Teffer, Amy K
    Tilley, Alexander
    Valls, Maria
    Vaudo, Jeremy J
    Wai, Tak-Cheung
    Wells, RJ David
    Wyatt, Alex SJ
    Yool, Andrew
    Trueman, Clive N
    Griffith University Author(s)
    Munroe, Sam
    Year published
    2018
    Metadata
    Show full item record
    Abstract
    Sharks are a diverse group of mobile predators that forage across varied spatial scales and have the potential to influence food web dynamics. The ecological consequences of recent declines in shark biomass may extend across broader geographic ranges if shark taxa display common behavioural traits. By tracking the original site of photosynthetic fixation of carbon atoms that were ultimately assimilated into muscle tissues of 5,394 sharks from 114 species, we identify globally consistent biogeographic traits in trophic interactions between sharks found in different habitats. We show that populations of shelf-dwelling sharks ...
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    Sharks are a diverse group of mobile predators that forage across varied spatial scales and have the potential to influence food web dynamics. The ecological consequences of recent declines in shark biomass may extend across broader geographic ranges if shark taxa display common behavioural traits. By tracking the original site of photosynthetic fixation of carbon atoms that were ultimately assimilated into muscle tissues of 5,394 sharks from 114 species, we identify globally consistent biogeographic traits in trophic interactions between sharks found in different habitats. We show that populations of shelf-dwelling sharks derive a substantial proportion of their carbon from regional pelagic sources, but contain individuals that forage within additional isotopically diverse local food webs, such as those supported by terrestrial plant sources, benthic production and macrophytes. In contrast, oceanic sharks seem to use carbon derived from between 30° and 50° of latitude. Global-scale compilations of stable isotope data combined with biogeochemical modelling generate hypotheses regarding animal behaviours that can be tested with other methodological approaches.
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    Journal Title
    Nature ecology & evolution
    Volume
    2
    DOI
    https://doi.org/10.1038/s41559-017-0432-z
    Copyright Statement
    © 2018 Springer Nature Publishing AG. This is an electronic version of an article published in Nature Ecology & Evolutionvolume 2, pages299–305 (2018). Nature Ecology & Evolution is available online at: http://link.springer.com/ with the open URL of your article.
    Subject
    Ecology not elsewhere classified
    Sharks
    Carbon atoms
    Biogeographic traits
    Shelf-dwelling sharks
    Oceanic sharks
    Animal behaviours
    Publication URI
    http://hdl.handle.net/10072/381845
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    • Journal articles

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