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 2017:
Three of the four proposed post-graduation training have been completed successfully. The
final student is expected to submit his work by the June 2018 and graduate by November
Three of six refereed journal publications submitted to reputable journals have been accepted
for publications. Two more manuscripts are in preparation. A total of eight refereed journal
publications are expected at the end of the project, exceeding the initial target of six.