Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/115825
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Isotopic Niche Variation in a Higher Trophic Level Ectotherm: Highlighting the Role of Succulent Plants in Desert Food Webs |
Autor: | Delibes, M. CSIC ORCID; Blázquez, M.C.; Fedriani, José M. CSIC ORCID; Granados, Arsenio; Soriano, Laura CSIC ORCID; Delgado Huertas, Antonio CSIC ORCID | Fecha de publicación: | 2015 | Editor: | Public Library of Science | Citación: | PLoS ONE, 10(5): e0126814. (2015) | Resumen: | Stable isotope analysis of animal tissues allows description of isotopic niches, whose axes in an n-dimensional space are the isotopic ratios, compared to a standard, of different isotope systems (e.g. δ13C, δ15N). Isotopic niches are informative about where an animal, population or species lives and about what it consumes. Here we describe inter- and intrapopulation isotopic niche (bidimensional δ13C-δ15N space) of the Orange-throated whiptail (Aspidoscelis hyperythra), an arthropodivorous small lizard, in ten localities of Baja California Sur (Mexico). These localities range from extreme arid to subtropical conditions. Between 13 and 20 individuals were sampled at each locality and 1 cm of tail-tip was collected for isotope analysis. As expected, interpopulation niche width variation was much larger than intrapopulation one. Besides, isotopic variation was not related to age, sex or individual size of lizards. This suggests geographic variation of the isotopic niche was related to changes in the basal resources that fuel the trophic web at each locality. The position of Bayesian isotope ellipses in the δ-space indicated that whiptails in more arid localities were enriched in 13C, suggesting most of the carbon they ingested came from CAM succulent plants (cacti, agaves) and in minor degree in C4 grasses. Contrarily, whiptails in subtropical areas were depleted in 13C, as they received more carbon from C3 scrubs and trees. Localities closer to sea-level tended to be enriched in 15N, but a clear influence of marine subsidies was detected only at individual level. The study contributes to identify the origin and pathways through which energy flows across the trophic webs of North American deserts | Versión del editor: | http://dx.doi.org/10.1371/journal.pone.0126814 | URI: | http://hdl.handle.net/10261/115825 | DOI: | 10.1371/journal.pone.0126814 |
Aparece en las colecciones: | (EBD) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
journal.pone.0126814.pdf | 1,16 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
PubMed Central
Citations
2
checked on 30-mar-2024
SCOPUSTM
Citations
6
checked on 15-abr-2024
WEB OF SCIENCETM
Citations
6
checked on 27-feb-2024
Page view(s)
314
checked on 19-abr-2024
Download(s)
243
checked on 19-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Artículos relacionados:
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.