Affiliations:
1 CIBIO-InBIO, Research Centre in Biodiversity and Genetic Resources, University of Porto, Campus de Vairão, 4485-661 Vairão, Portugal.
2 BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
3 Universidad de Alcalá, Department of Life Sciences, Ctra. Madrid-Barcelona Km 33.600, 28805 Alcalá de Henares, Madrid, Spain
4 Universidad de Alcalá, GloCEE – Global Change Ecology and Evolution Research Group, Department of Life Sciences, Ctra. Madrid-Barcelona Km 33.600, 28805 Alcalá de Henares, Madrid, Spain
5 Department of Biodiversity, Ecology and Evolution, Universidad Complutense de Madrid (Madrid, Spain)
Corresponding author: Sara Villén-Pérez (sara.villen@gmail.com)
Running title: Limiting factors and species abundance
Keywords: Law of the Minimum, quantile regression, species distribution, trees, birds, abundance-environment relationships.
Article type: Letter