Miniatura

Fitxers

676175.pdf (5.03 MB)

Tipus de document

Article

Versió

Versió acceptada

Data de publicació

2018-01-18

Tots els drets reservats

Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/120429

A global perspective on the trophic geography of sharks

Títol de la revista

Autors

Director/Tutor

ISSN de la revista

Títol del volum

Recurs relacionat

https://doi.org/10.1038/s41559-017-0432-z

Resum

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.

Matèries

Taurons, Biologia marina, Ecosistemes

Matèries (anglès)

Sharks, Marine biology, Biotic communities

Citació

Col·leccions

Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))

Citació

BIRD, Christopher s., VERÍSSIMO, Ana, MAGOZZI, Sarah, ABRANTES, Kátya g., AGUILAR, Àlex, AL-REASI, Hassan, BARNETT, Adam, BETHEA, Dana m., BIAIS, Gérard, BORRELL THIÓ, Assumpció, 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, COLAÇO, Ana, COURTNEY, Dean, 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, Dorothée. A global perspective on the trophic geography of sharks. _Nature Ecology and Evolution_. 2018. Vol. 2, núm. 299-305. [consulta: 2 de febrer de 2026]. ISSN: 2397-334X. [Disponible a: https://hdl.handle.net/2445/120429]

Exportar metadades

JSON - METS

Compartir registre