Ole Reidar Vetaas

Position

Professor, Biogeography

Affiliation

Research groups

Short info

I am an ecologist and biogeographer with research interests in spatial biodiversity patterns on both large and small scales, as well as changes in vegetation and landscapes over time and space, i.e., succession. My applied research focuses on the effect of human utilisation on biodiversity.
Research

Research Abstract

In my empirical research, I use unique study sites that function as natural experimental sites, such (i) extensive elevation ranges, (ii) mountainous oceanic islands, and (iii) glacier-foreland.

  1. Large mountains and their gradients in bioclimate are used to elucidate the mechanism that influences the richness of species. For instance, the Himalayan range has a tropical bioclimate in the lowland and glaciers at the top that mimics the latitudinal gradient from equatorial tropical to the arctic zone. I apply these large-scale temperature elevation gradients as in situ experimental sites because they are superior natural, non-manipulative, or observational experiments in which dramatic changes in climatic characteristics occur over relatively short geographic distances.
  2. The experimental situation is even more ideal on discrete sample sites such as isolated oceanic islands with mountains, such as Tenerife and La Palma in the Canary Islands archipelago.
  3. Glacier foreland formed during the Little Ice Age (1300-1850) sites is another natural experiment where time since exposed to air is directly linked to distance from the glacier. Here, my study focuses on primary succession and soil development to elucidate what drives the change in vegetation and the landscapes after the glacier has retreated due to climate change.

Projects: Currently, I am working on a project in Nepal that aims to identify the most effective connectivity between existing Protected areas, through Other Effective area-based Conservation Management (OECM), to support biodiversity persistence under a changing climate and in harmony with the local land use system

Another project is in a glacier foreland (Nordfjord, Norway), where we aim to elucidate the effect that certain nitrogen-fixing plants have on the overall succession and soil development —a phenomenon known as facilitation.  Two master students are part of this project.

Outreach

Distribution of Cotoneaster bullatus Bois Along the Hardangerfjord, Norway. 

Recent papers:
Vetaas et al. 2025: Testing of Drivers for Plant Species Diversity Along Elevational Gradients on Seven Mountainous Islands in the Subtropics, Journal of Vegetation Science. 36 (4), e70053


Gatti, …. Vetaas & Chiarucci 2023: Analysing the distribution of strictly protected areas toward the EU2030 target. Biodiv & Conservation, 35:3157-3174 https://doi.org/10.1007/s10531-023-02644-5

Publications
Academic article
Errata
Academic lecture
Editorial
Academic literature review
Doctoral dissertation
Book review
Poster
Masters thesis
Popular scientific article
Academic chapter/article/Conference paper
Non-fiction book
Interview
Academic anthology/Conference proceedings
Lecture
Compendium
Report

See a complete overview of publications in Cristin.

Vetaas, O.R., Shrestha, K.B.& Sharma, L.N. 2020. Changes in plant species richness after cessation of forest disturbance. Applied Vegetation Science, DOI: 10.1111/avsc.12545.

Vetaas, O.R., K.P. Paudel, & Christensen, M. 2019. Principal factors controlling biodiversity along an elevation gradient: water, energy and their interaction. Journal of Biogeography, 46: 1652-1663.  special issue -  von Humboldt anniversary.

Qian, H, Sandel, B., Deng, T & Vetaas, O.R. 2019, Geophysical, evolutionary and ecological processes interact to drive phylogenetic dispersion in angiosperm assemblages along the longest elevational gradient in the world, Botanical Journal of the Linnaean Society, 190, 333–344.

Vetaas, O.R., Grytnes, J.A., Bhatta, K & B.A. Hawkins 2018. An intercontinental comparison of niche conservatism along a temperature gradient. Journal of Biogeography, 45: 1104-1113.

Slik, JWF, Franklin, J…. Vetaas, O.R. et al. 2018.Phylogenetic classification of the world's tropical forests. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 115:1837-1842.

Steinbauer, M. J., Field, R., …Vetaas, O.R. & Beierkuhnlein, C. 2016. Topography-driven isolation, speciation and a globally consistent pattern of endemism. Global Ecology and Biogeography, 25: 1097-1107

Vetaas, O.R., Vikane, J.H., Saure, H. I  & Vandvik, V. 2014. North Atlantic islands with native and alien trees: are there differences in diversity and species─area relationships? Journal of Vegetation Science, 25: 213–225.

Vetaas OR & Ferrer-Castan D 2008. Patterns of woody plant species richness in the Iberian Peninsula: environmental range and spatial scale. Journal of Biogeography, 35:1863-1878.

Grytnes, J.A. & Vetaas, O.R. 2002. Species richness and altitude: a comparison between simulation models and interpolated plant species richness along the Himalayan gradient, Nepal. American Naturalist, 159: 294-204.

Vetaas, O.R. & Grytnes, J.A. 2002. Distribution of vascular plant species richness and endemic richness along the Himalayan elevation gradient in Nepal. Global Ecology and Biogeography, 11: 291-301.

 

Projects

University of Bergen (NO) Jawhal Nehru University (IN) / Joint Indo-Norwegian research and education on water-related changes in Himalaya / Coordinator / DIKU (.3 mill NOK)

Biodiversity: a function of water and thermodynamics.  project  awaiting  NRC-funding