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Beyond the Trail—Understanding Non-Native Plant Invasions in Mountain Ecosystems

Research output: Journal contributions › Journal articles › Research › peer-review

Authors

  • Agustina Barros
  • Eduardo Fuentes Lillo
  • Valeria Aschero
  • Aníbal Pauchard
  • María Alisa Alvarez
  • Ronja Wedegärtner
  • Jan Clavel
  • Jana Müllerová
  • Jan Pergl
  • Shengwei Zong
  • Michaela Vítková
  • Tereza Klinerová
  • Lohengrin A. Cavieres
  • Christian Larson
  • Lisa J. Rew
  • Tim Seipel
  • Chloe Meffre
  • Tomas Arellano
  • Franz Essl
  • Stefan Dullinger
  • Onalenna Gwate
  • V. Ralph Clark
  • Marc Achermann
  • Jonas J. Lembrechts

Aim: We aimed to examine the abiotic, biotic and anthropogenic drivers of non-native plant species distribution along hiking trails in mountainous regions. Location: Nine mountain regions across six continents, including North America (USA), South America (Argentina and Chile), Europe (Sweden, Norway, Czech Republic), Africa (South Africa), Asia (China) and Oceania (Australia). Time Period: Data were collected between 2016 to 2022 during the summer season. Major Taxa Studied: Vascular plants. Methods: We implemented a standardised sampling design (MIREN trail survey) with T-shaped sample sites placed parallel to trails and perpendicular to adjacent vegetation. We examined the main drivers (abiotic, biotic and anthropogenic factors) affecting non-native species' presence, richness and cover. Results: At the global scale, abiotic (climatic) variables explained most of the variation in non-native species richness. In contrast, biotic factors were the most important for the presence and cover of non-native plants. Anthropogenic factors, including distance to the trail, use intensity and livestock grazing, were also important but to a lesser extent than the main factors. While the total number of non-native species differed across regions, the patterns explaining plant invasions were consistent. Main Conclusions: Our regional study identified mountain trails that are particularly vulnerable to plant invasions. Our findings suggest that under future scenarios of climate change, increased anthropogenic pressure and heightened livestock activity, the presence of non-native species beyond trail edges may become more frequent. This highlights the need to restrict off-trail activities in areas of high conservation value.

Original languageEnglish
Article numbere70060
JournalGlobal Ecology and Biogeography
Volume34
Issue number6
Number of pages14
ISSN1466-822X
DOIs
Publication statusPublished - 06.2025

Bibliographical note

Publisher Copyright:
© 2025 The Author(s). Global Ecology and Biogeography published by John Wiley & Sons Ltd.

    Research areas

  • anthropogenic use, global protocols, MIREN, monitoring, mountains, plant invasions, trails
  • Biology
  • Ecosystems Research

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