| Abstrakt: |
As entering the twenty-first century, the degradation of Africa’s marine environment has become increasingly severe due to rapid population growth, urbanisation, natural disasters, the pressures of overfishing and economic development. Therefore, protecting and restoring Africa’s marine ecosystems is essential to realize the benefits of these resources at the global and regional levels. This paper drew on ecological indicators such as catch data, mean trophic level (TLm), relative primary production required (%PPR), and loss in secondary production index (L index) to measure and assess the impact of marine fisheries on ecosystems. Meanwhile, it constructed a pathway model based on the Environmental Kuznets Curve (EKC) hypothesis to assess ecosystem-level impacts by analysing how economic growth and urbanisation affect the structural diversity of marine ecosystems in West Africa, to study the more complete processes associated with marine resource depletion. Economic growth and urbanisation were found to have both direct and indirect effects on marine trophic structure, and the combined effects suggest that the economic EKC hypothesis does not apply to the marine ecosystem of West Africa, while the urban EKC hypothesis is supported, and that increased levels of urbanisation will benefit diversity of marine fishery catch in West Africa. [ABSTRACT FROM AUTHOR] |
