Ole Magnus Theisen

ORCID: 0000-0002-0228-3150
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Research Areas
  • Transboundary Water Resource Management
  • Climate Change, Adaptation, Migration
  • Rangeland Management and Livestock Ecology
  • Health and Conflict Studies
  • Political Conflict and Governance
  • Disaster Management and Resilience
  • Agricultural risk and resilience
  • Meta-analysis and systematic reviews
  • Climate Change and Geoengineering
  • Sustainability and Climate Change Governance
  • African history and culture analysis
  • Grief, Bereavement, and Mental Health
  • Mental Health and Patient Involvement
  • Crime, Illicit Activities, and Governance
  • Palliative Care and End-of-Life Issues
  • Mental Health Research Topics
  • Religion, Society, and Development
  • Innovation, Sustainability, Human-Machine Systems
  • Health, Environment, Cognitive Aging
  • Energy and Environment Impacts
  • Research in Social Sciences
  • Economic Growth and Development
  • Peacebuilding and International Security
  • Nuclear Issues and Defense
  • Religion and Sociopolitical Dynamics in Nigeria

Norwegian Labour Inspection Authority
2022-2023

Norwegian University of Science and Technology
2007-2022

Peace Research Institute Oslo
2008-2017

A recent Climatic Change review article reports a remarkable convergence of scientific evidence for link between climatic events and violent intergroup conflict, thus departing markedly from other contemporary assessments the empirical literature. This commentary revisits in order to understand discrepancy. We believe origins disagreement can be traced back article's underlying quantitative meta-analysis, which suffers shortcomings with respect sample selection analytical coherence. modified...

10.1007/s10584-014-1266-1 article EN cc-by Climatic Change 2014-10-22

Scarcity of renewable resources is frequently argued to be a main driver violent conflict. The 2004 and 2007 Nobel Peace Prize awards, as well the international debate about implications climate change, show salience topic security issue. Studies testing link between resource scarcity armed conflict have reached diverging conclusions. One study, in particular, has found substantial support for eco-scarcity theory, while most others limited association. This article starts with an attempt at...

10.1177/0022343308096157 article EN Journal of Peace Research 2008-10-27

Dominant climate models suggest that large parts of Africa will experience greater climatic variability and increasing rates drought in coming decades. This could have severe societal consequences, because the economies food supplies most African countries depend on rain-fed agriculture. According to leading environmental security scholars, policymakers, nongovernmental organizations, an increase scarcity-driven armed conflicts should also be expected. A conditional theory conflict predicts...

10.1162/isec_a_00065 article EN International Security 2011-12-28

The evidence of coming climate change has generated catastrophe-like statements a future where warmer, wetter, and wilder leads to surge in migrant streams gives rise new wars. Although highly popular policy circles, few these claims are based on systematic evidence. Using most-likely case design Kenya 1989–2004, with geographically disaggregated data armed conflicts below the common civil conflict level, this study finds that climatic factors do influence risk violent events. effect is...

10.1177/0022343311425842 article EN Journal of Peace Research 2012-01-01

Earlier research that reports a correlational pattern between climate anomalies and violent conflict routinely refers to drought-induced agricultural shocks adverse economic spillover effects as key causal mechanism linking the two phenomena. Comparing half century of statistics on variability, food production, political violence across Sub-Saharan Africa, this study offers most precise theoretically consistent empirical assessment date purported indirect relationship. The analysis reveals...

10.1088/1748-9326/10/12/125015 article EN cc-by Environmental Research Letters 2015-12-01

Background: Surveys suggest that most people prefer to die at home. Trends in causes of mortality and age composition could limit the feasibility home deaths. Aim: To examine effect changes decedents’ age, gender cause death on pattern place using data all deaths Norway for period 1987–2011. Design: Population-based observation study comparing raw, predicted, as well standardised shares isolating demographic epidemiological changes. The analysis was bolstered with joinpoint regression detect...

10.1177/0269216317691259 article EN cc-by-nc Palliative Medicine 2017-02-13

The aim of this review is to understand the state art research related climate change and collectively organized violence from a broad political science perspective. An increasing share quantitative studies find link between weather anomalies for some forms violence, but directions are not always consistent mechanisms satisfactorily understood. Non-naturalist scholars note important reservations. Important improvements have been made during last few years, much remains conclude that will...

10.1007/s40641-017-0079-5 article EN cc-by Current Climate Change Reports 2017-10-23

Abstract Droughts are often suspected to increase the risk of violent conflict through agricultural production shocks, and existing studies explore these links meteorological proxies. In Syria, an alleged collapse caused by drought is assumed have contributed increased migration outbreak in 2011. Here we use satellite derived cropland climate data study land dynamics relation Syria. We show that claims cannot be substantiated as croplands saw a fast recovery after 2007–2009 drought. Our...

10.1038/s43247-022-00405-w article EN cc-by Communications Earth & Environment 2022-04-06

It is commonly held that political leaders favour people of the same ethnic origin. We test this argument ethno-political favouritism by studying variations in usage maternal health care services across groups sub-Saharan Africa (SSA). More specifically, we link geo-referenced individual-level data from Demographic and Health Surveys on 601,311 births 399,908 mothers 31 countries during period 1981–2014 with settlement their status. Our results indicate women benefit shift brings co-ethnics...

10.1177/2233865919895862 article EN cc-by-nc International Area Studies Review 2020-01-09

Climate change is likely to cause an increase in natural disasters such as floods, droughts, and cyclones – factors that have been linked hunger, diseases, violent conflict. We test two competing accounts on the effects of Whereas environmental security holds increased resource pressure under certain circumstances increases conflict risk, disaster sociology’s main finding social cohesion strengthened aftermath disasters. In order assess potential future consequences climate violence we use a...

10.2139/ssrn.1911393 article EN SSRN Electronic Journal 2011-01-01

How do we know how much know? Quantifying uncertainty associated with our modelling work is the only way can answer about any phenomenon. With quantitative science now highly influential in public sphere and results from models translating into action, must support conclusions sufficient rigour to produce useful, reproducible results. Incomplete consideration of model-based uncertainties lead false real world impacts. Despite these potentially damaging consequences, incomplete both within...

10.48550/arxiv.2206.12179 preprint EN cc-by arXiv (Cornell University) 2022-01-01
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