Positive effect of spring advance on the diet quality of an alpine herbivore.

Rupicapra pyrenaica cuticle microhistological analysis diet composition near-infrared spectroscopy

Journal

Integrative zoology
ISSN: 1749-4877
Titre abrégé: Integr Zool
Pays: Australia
ID NLM: 101492420

Informations de publication

Date de publication:
Jan 2022
Historique:
pubmed: 6 7 2021
medline: 5 1 2022
entrez: 5 7 2021
Statut: ppublish

Résumé

Changes in vegetation phenology related to global warming are having alarming effects on the life history traits of many herbivore species. Such changes are particularly critical in alpine ecosystems, where strong climate limitations on plant growth make seasonal synchronization imperative for the growth, reproduction and survival of herbivores. However, despite the pivotal role of resource-use strategies on the performances of such species, few studies have explicitly assessed the mechanistic impact of climate change on their diets. We aimed to fill this gap by studying the effect of spring onset on the dietary composition and quality of a medium-size alpine herbivore while considering density-dependent processes and age- and sex-specific differences in foraging behavior. Using an exceptional, long-term (24 years) direct individual-based dietary monitoring of a Pyrenean chamois population (Rupicapra pyrenaica pyrenaica), we showed that ongoing earlier onsets of spring are leading to an earlier access to high-quality forage and therefore a higher diet quality at a fixed date, without apparent changes in diet composition. We also showed that at high densities, intraspecific competition reduced diet quality by driving animals to feed more on woody plants and less on nutritious forbs and graminoids. By assessing the mechanistic effects of global warming on the dietary patterns of species at the center of trophic networks, this study is an essential step for predictive models aiming at understanding the ongoing ecosystem consequences of the global climatic crisis.

Identifiants

pubmed: 34223702
doi: 10.1111/1749-4877.12572
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

78-92

Subventions

Organisme : Approche Intégrée de la Démographie des Populations d'Isard
ID : N°2014/08/6171
Organisme : Government of Andorra (ATC015)
ID : AND 2015/2016
Organisme : Government of Andorra (ATC015)
ID : 2016/2017
Organisme : Government of Andorra (ATC015)
ID : 2017/2018
Organisme : Spanish Ministerio de Economía y Competitividad (Mineco)
ID : RYC-2016-21120

Informations de copyright

© 2021 The Authors. Integrative Zoology published by International Society of Zoological Sciences, Institute of Zoology/Chinese Academy of Sciences and John Wiley & Sons Australia, Ltd.

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Auteurs

Johan Espunyes (J)

Wildlife Ecology and Health group (WE&H) i Servei d'Ecopatologia de la Fauna Salvatge (SEFaS), Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain.
Wildlife Conservation Medicine Research Group (WildCoM), Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain.
Research and Conservation Department, Zoo de Barcelona, Barcelona, Spain.

Emmanuel Serrano (E)

Wildlife Ecology and Health group (WE&H) i Servei d'Ecopatologia de la Fauna Salvatge (SEFaS), Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain.

Sara Chaves (S)

Wildlife Ecology and Health group (WE&H) i Servei d'Ecopatologia de la Fauna Salvatge (SEFaS), Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain.
Group of Ruminant Research (G2R), Department of Animal and Food Science, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain.

Jordi Bartolomé (J)

Group of Ruminant Research (G2R), Department of Animal and Food Science, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain.

Pierre Menaut (P)

French Agency for Biodiversity, Direction Régionale Occitanie, Service d'Appui aux Acteurs et Mobilisation du Territoire, Villeneuve de Rivière, France.

Elena Albanell (E)

Group of Ruminant Research (G2R), Department of Animal and Food Science, Faculty of Veterinary Medicine, Universitat Autònoma de Barcelona, Bellaterra, Spain.

Pascal Marchand (P)

French Agency for Biodiversity, Direction de la Recherche et Appui Scientifique, Unité Ongulés Sauvages, Gières, France.

Kévin Foulché (K)

French Agency for Biodiversity, Direction Régionale Occitanie, Service d'Appui aux Acteurs et Mobilisation du Territoire, Villeneuve de Rivière, France.

Mathieu Garel (M)

French Agency for Biodiversity, Direction de la Recherche et Appui Scientifique, Unité Ongulés Sauvages, Gières, France.

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