Different effects of alpine woody plant expansion on domestic and wild ungulates

Johan Espunyes, Miguel Lurgi, Ulf Büntgen, Jordi Bartolomé, Juan Antonio Calleja, Arturo Gálvez-Cerón, Josep Peñuelas, Bernat Claramunt-López, Emmanuel Serrano

Research output: Contribution to journalArticleResearch

6 Citations (Scopus)

Abstract

© 2019 John Wiley & Sons Ltd Changes in land-use and climate affect the distribution and diversity of plant and animal species at different spatiotemporal scales. The extent to which species-specific phenotypic plasticity and biotic interactions mediate organismal adaptation to changing environments, however, remains poorly understood. Woody plant expansion is threatening the extent of alpine grasslands worldwide, and evaluating and predicting its effects on herbivores is of crucial importance. Here, we explore the impact of shrubification on the feeding efficiency of Pyrenean chamois (Rupicapra p. pyrenaica), as well as on the three most abundant coexisting domestic ungulate species: cattle, sheep and horses. We use observational diet composition from May to October and model different scenarios of vegetation availability where shrubland and woodland proliferate at the expense of grassland. We then predicted if the four ungulate species could efficiently utilize their food landscapes with their current dietary specificities measuring their niche breath in each scenario. We observed that the wild counterpart, due to a higher trophic plasticity, is less disturbed by shrubification compared to livestock, which rely primarily on herbaceous plants and will be affected 3.6 times more. Our results suggest that mixed feeders, such as chamois, could benefit from fallow landscapes, and that mountain farmers are at a growing economic risk worldwide due to changing land-use practices and climate conditions.
Original languageEnglish
Pages (from-to)1808-1819
Number of pages12
JournalGlobal Change Biology
Volume25
Issue number5
DOIs
Publication statusPublished - 1 May 2019

Keywords

  • AGRICULTURAL ABANDONMENT
  • Animals
  • Animals, Wild
  • CLIMATE-CHANGE IMPACTS
  • Climate Change
  • DIET COMPOSITION
  • Ecosystem
  • FREE-ROAMING HORSES
  • Food Preferences
  • Herbivory/physiology
  • LAND-USE CHANGES
  • LIVESTOCK PRODUCTION
  • Livestock/physiology
  • Plants/classification
  • Pyrenean chamois
  • RED DESERT
  • Rupicapra/physiology
  • SHRUB ENCROACHMENT
  • SPECIES RICHNESS
  • SUMMER TEMPERATURE-VARIATIONS
  • Species Specificity
  • diet preference
  • free-ranging livestock
  • habitat change
  • herbivory
  • mountain ecosystems
  • shrubification

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