Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/129246
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

Factors affecting diet variation in the Pyrenean rock ptarmigan (Lagopus muta pyrenaica): Conservation implications

AutorGarcía-González, Ricardo CSIC ORCID ; Aldezábal, A.; Laskurain, Nere Amaia; Margalida, Antoni CSIC ORCID ; Novoa, Claude
Fecha de publicación2016
EditorPublic Library of Science
CitaciónPLoS ONE 11(2): e0148614 (2016)
ResumenThe Pyrenean rock ptarmigan (Lagopus muta pyrenaica) lives at one of the southernmost limits of the ptarmigan range. Their small population sizes and the impacts of global changes are limiting factors in the conservation of this threatened subspecies. An effective conservation policy requires precise basic knowledge of a species' food and habitat requirements, information that is practically non-existent for this Pyrenean population. Here, we describe the diet of a ptarmigan population in the Eastern Pyrenees, the environmental factors influencing its variability and the relationship between diet floristic composition and quality. Diet composition was determined by microhistological analysis of faeces and diet quality was estimated from free-urate faecal N content. Our results show that grouse diet is based mainly on arctic-alpine shrubs of the Ericaceae family, as well as dwarf willows (Salix spp.) and Dryas octopetala. The most frequently consumed plant species was Rhododendron ferrugineum, but its abundance in the diet was negatively related to the diet nitrogen content. Conversely, the abundance of Salix spp., grass leaves and arthropods increased the nitrogen content of the diet. Seasonality associated with snow-melting contributed the most to variability in the Pyrenean ptarmigan diet, differentiating winter from spring/summer diets. The latter was characterised by a high consumption of dwarf willows, flowers, arthropods and tender forb leaves. Geographic area and sex-age class influenced diet variability to a lesser extent. Current temperature increases in the Pyrenees due to global warming may reduce the persistence and surface area of snow-packs where preferred plants for rock ptarmigan usually grow, thus reducing food availability. The high consumption of Rh. ferrugineum characterised the diet of the Pyrenean population. Given the toxicity of this plant for most herbivores, its potential negative effect on Pyrenean ptarmigan populations should be evaluated.
Versión del editorhttp://dx.doi.org/10.1371/journal.pone.0148614
URIhttp://hdl.handle.net/10261/129246
DOI10.1371/journal.pone.0148614
ISSN1932-6203
Aparece en las colecciones: (IPE) Artículos
(IREC) Artículos

Ficheros en este ítem:
Fichero Descripción Tamaño Formato
Gonzalez_Rock_Ptarmiganpone.0148614.pdf1,37 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

PubMed Central
Citations

4
checked on 19-mar-2024

SCOPUSTM   
Citations

5
checked on 20-mar-2024

WEB OF SCIENCETM
Citations

4
checked on 28-feb-2024

Page view(s)

264
checked on 27-mar-2024

Download(s)

218
checked on 27-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


Artículos relacionados:


Este item está licenciado bajo una Licencia Creative Commons Creative Commons