Joshua Ntajal

Research themes
  • Water resources (management)
  • Environmental and climate change
  • Health and sanitation
  • Urbanisation
  • Agriculture, land use, climate change
  • Health
Research countries
  • Ghana
Research projects

One Health and Urban Transformation

Working groups

One Health and Urban Transformation, AG-Evers (GUIB)

Additional information

Project: One-Health and Urban Transformation

Professional experience

Teaching, Research, Mentoring, etc.


2013 - 2015

MSc. Climate Change and Human Security. University of Lome, Togo. West African Science Service Center for Climate Change and Adapted Land use (WASCAL).


2008 - 2012

B.A. (Hons). Geography, University of Cape Coast, Cape Coast, Ghana.



GIS & Remote Sensing, Hydrodynamics, Climate Change, Water quality, Hydrological modeling, Disaster Risk Mapping, Disaster Risk Reduction, Flood Risk & Vulnerability Assessment

Funding institutions

Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen, Germany


Doctoral research funded by

Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen, Germany

Supervisors of
doctoral work

Prof. Dr. Mariele Evers, Department of Geography, University of Bonn.

Prof. Dr. Thomas Kistemann

Advisor at ZEF

Dr. Timo Falkenberg


Ntajal J., B. Höllermann, T. Falkenberg, T. Kistemann and M. Evers.  2022.  Water and Health Nexus—Land Use Dynamics, Flooding, and Water-Borne Diseases in the Odaw River Basin, Ghana.  Water, 14 (3)   : 461-   . (Open Access)   Further Information


Ntajal, J.  2020.  Human-surface water interactions and the transmission of water-related infectious diseases – schistosomiasis in Ghana.  WHO CC Newsletter, No. 30 (August 2020)   : 8 - 12   . (Open Access)   Further Information
Ntajal, J., M. Evers, T. Kistemann, T. Falkenberg.  2020.  Influence of human–surface water interactions on the transmission of urinary schistosomiasis in the Lower Densu River basin, Ghana.  Social Science & Medicine, Nov. 2020 (113546)   . (Open Access)   Further Information
Ntajal, J., T. Falkenberg, T. Kistemann and M. Evers.  2020.  Influences of Land-Use Dynamics and Surface Water Systems Interactions on Water-Related Infectious Diseases—A Systematic Review.  Water, 12 (3),   : 631, DOI: 10.3390/w12030631   . Further Information


Joshua Ntajal, Timo Falkenberg, Thomas Kistemann, Mariele Evers,.  2018.  Linking urban land use dynamics and surface water systems: human health perspective.  Doctoral Thesis at  Department of Geography, Faculty of Mathematics and Natural Sciences, University of Bonn. 

Additionals, Curriculum Vitae
and Downloads

Joshua Ntajal

Junior Researcher One Health

Department :
ZEF C: Department of Ecology and Natural Resources Management

joshuantajal(at) /joshuantajal(at)