Bird C. S., Verissimo A., Magozzi S., Abrantes K. G., Aguilar A., Al-Reasi H., Barnett A., Bethea D. M., Biais G., Borrell A., Bouchoucha M., Boyle M., Brooks E. J., Brunnschweiler J., Bustamante P., Carlisle A., Catarino D., Caut S., Cherel Y., Chouvelon T., Churchill D., Ciancio J., Claes J., Colaco A., Courtney D. L., Cresson P., Daly R., de Necker L., Endo T., Figueiredo I., Frisch A. J., Hansen J. H., Heithaus M., Hussey N. E., Iitembu J., Juanes F., Kinney M. J., Kiszka J. J., Klarian S. A., Kopp D., Leaf R., Li Y. K., Lorrain Anne, Madigan D. J., Maljkovic A., Malpica-Cruz L., Matich P., Meekan M. G., Ménard Frédéric, Menezes G. M., Munroe S. E. M., Newman M. C., Papastamatiou Y. P., Pethybridge H., Plumlee J. D., Polo-Silva C., Quaeck-Davies K., Raoult V., Reum J., Torres-Rojas Y. E., Shiffman D. S., Shipley O. N., Speed C. W., Staudinger M. D., Teffer A. K., Tilley A., Valls M., Vaudo J. J., Wai T. C., Wells R. J. D., Wyatt A. S. J., Yool A., Trueman C. N. (2018). A global perspective on the trophic geography of sharks. Nature Ecology and Evolution, 2 (2), p. 299-305. ISSN 2397-334X.
Titre du document
A global perspective on the trophic geography of sharks
Année de publication
2018
Auteurs
Bird C. S., Verissimo A., Magozzi S., Abrantes K. G., Aguilar A., Al-Reasi H., Barnett A., Bethea D. M., Biais G., Borrell A., Bouchoucha M., Boyle M., Brooks E. J., Brunnschweiler J., Bustamante P., Carlisle A., Catarino D., Caut S., Cherel Y., Chouvelon T., Churchill D., Ciancio J., Claes J., Colaco A., Courtney D. L., Cresson P., Daly R., de Necker L., Endo T., Figueiredo I., Frisch A. J., Hansen J. H., Heithaus M., Hussey N. E., Iitembu J., Juanes F., Kinney M. J., Kiszka J. J., Klarian S. A., Kopp D., Leaf R., Li Y. K., Lorrain Anne, Madigan D. J., Maljkovic A., Malpica-Cruz L., Matich P., Meekan M. G., Ménard Frédéric, Menezes G. M., Munroe S. E. M., Newman M. C., Papastamatiou Y. P., Pethybridge H., Plumlee J. D., Polo-Silva C., Quaeck-Davies K., Raoult V., Reum J., Torres-Rojas Y. E., Shiffman D. S., Shipley O. N., Speed C. W., Staudinger M. D., Teffer A. K., Tilley A., Valls M., Vaudo J. J., Wai T. C., Wells R. J. D., Wyatt A. S. J., Yool A., Trueman C. N.
Source
Nature Ecology and Evolution, 2018,
2 (2), p. 299-305 ISSN 2397-334X
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 degrees and 50 degrees 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.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Ecologie, systèmes aquatiques [036]
;
Ressources halieutiques [040]
Localisation
Fonds IRD [F B010072425]
Identifiant IRD
fdi:010072425
