Effects of Climate Change on Volta Lake Resources (VOLTRES)

Partner Institution(s): 
Aarhus University (AU), Department of Bioscience, Aarhus, Denmark
Start Date: 
May 1, 2014
End Date: 
April 30, 2017
Project Type: 
South driven projects
Project Code: 
Total grant: 
DKK 4,979,069
Contact : 
Ruby Asmah

Africa is very likely to experience higher temperature increases than the rest of the earth during the 21st century. Extreme rainfall events are predicted to increase for West Africa. Climate change (CC) will influence the ecosystem in lakes by changes in the physical (water temperature, stratification, transparency), chemical (nutrient loading, oxygen) and biological (structure and functioning of the ecosystem) components. The Volta Lake is the main source of inland fish in Ghana, a source of livelihood for over 1,200 riparian communities and the main medium for cage fish farming in Ghana. The fishery of the Lake is heavily exploited and CC is expected to worsen the situation. VOLTRES will assess the impacts of CC on hydrology, water quality, primary production and fish production of the Lake and improve the understanding of the ecosystem functioning through a combination of field data sampling with empirical biophysical and mechanistic ecological modeling of the catchment-lake system. The river basin and lake ecosystem models will be validated using existing data as well as data generated through monitoring. Results, lessons, skills and recommendations from the project will be disseminated through stakeholder workshops, seminars, policy briefs, and journal publications. The output will contribute significantly towards addressing the major needs identified in the Ghana National CC Adaptation Strategy in the design and implementation of programmes on fishery management.


Midterm report 2015:
The main objectives of the project are to improve the understanding of the physical and biogeochemical functioning of Lake Volta and how the Lake resources will respond to climate change, strengthen local research capacity through the use of new research approaches such as ecosystem and biophysical modeling, ensure early preparedness and response to climate change effects in the Lake environment and to contribute to effective management of Lake Volta.

Among the outputs are downscaled future climate scenarios over the the Volta Basin, trained Ghanaian scientist in climate change impact research.

In terms of outcomes, the project expects to see changes in plans, strategies and policies for use and management of the Lake based on results from the project.

This page was last modified on 12 April 2016

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