A systematic review of climate change impacts, adaptation strategies, and policy development in West Africa

Climate change studies are diverse with no single study giving a comprehensive review of climate change impacts, adaptation strategies, and policy development in West Africa. The unavailability of an all-inclusive study to serve as a guide for practitioners affects the effectiveness of climate change adaptation strategies proposed and adopted in the West African sub-region. The purpose of this study was to review the impacts of climate change risks on the crop, fishery, and livestock sectors, as well as the climate change adaptation strategies and climate-related policies aimed at helping to build resilient agricultural production systems in West Africa. The review process followed a series of rigorous stages until the final selection of 56 articles published from 2009 to 2023. Generally, the results highlighted the adverse effects of climate change risks on food security. We found a continuous decline in food crop production. Additionally, the livestock sector experienced morbidity and mortality, as well as reduction in meat and milk production. The fishery sector recorded loss of fingerlings, reduction in fish stocks, and destruction of mariculture and aquaculture. In West Africa, climate-smart agriculture technologies, physical protection of fishing, and inclusion of gender perspectives in programs appear to be the major adaptation strategies. The study therefore recommends the inclusion of ecosystem and biodiversity restoration, weather insurance, replacement of unsafe vessels, and strengthening gender equality in all climate change mitigation programs, as these will help to secure enough food for present and future generations.