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Environmental Contamination of a Biodiversity Hotspot—Action Needed for Nature Conservation in the Niger Delta, Nigeria

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  • Christabel Edena Ansah

    (Institute for Geography and Geology, Department of Remote Sensing, Julius-Maximilians-University Würzburg, Oswald-Külpe-Weg 86, 97074 Würzburg, Germany
    Remote Sensing Group, Institute of Computer Science, University of Osnabrück, Wachsbleiche 27, 49090 Osnabrück, Germany)

  • Itohan-Osa Abu

    (Institute for Geography and Geology, Department of Remote Sensing, Julius-Maximilians-University Würzburg, Oswald-Külpe-Weg 86, 97074 Würzburg, Germany)

  • Janina Kleemann

    (Institute for Geosciences and Geography, Department of Sustainable Landscape Development, Martin Luther University Halle-Wittenberg, Von-Seckendorff-Platz 4, 06120 Halle (Saale), Germany)

  • Mahmoud Ibrahim Mahmoud

    (National Oil Spill Detection and Response Agency (NOSDRA), NAIC Building, 5th Floor, Plot 590, Zone AO, Central Business District, Abuja 900211, Nigeria)

  • Michael Thiel

    (Institute for Geography and Geology, Department of Remote Sensing, Julius-Maximilians-University Würzburg, Oswald-Külpe-Weg 86, 97074 Würzburg, Germany)

Abstract

The Niger Delta belongs to the largest swamp and mangrove forests in the world hosting many endemic and endangered species. Therefore, its conservation should be of highest priority. However, the Niger Delta is confronted with overexploitation, deforestation and pollution to a large extent. In particular, oil spills threaten the biodiversity, ecosystem services, and local people. Remote sensing can support the detection of spills and their potential impact when accessibility on site is difficult. We tested different vegetation indices to assess the impact of oil spills on the land cover as well as to detect accumulations (hotspots) of oil spills. We further identified which species, land cover types, and protected areas could be threatened in the Niger Delta due to oil spills. The results showed that the Enhanced Vegetation Index, the Normalized Difference Vegetation Index, and the Soil Adjusted Vegetation Index were more sensitive to the effects of oil spills on different vegetation cover than other tested vegetation indices. Forest cover was the most affected land-cover type and oil spills also occurred in protected areas. Threatened species are inhabiting the Niger Delta Swamp Forest and the Central African Mangroves that were mainly affected by oil spills and, therefore, strong conservation measures are needed even though security issues hamper the monitoring and control.

Suggested Citation

  • Christabel Edena Ansah & Itohan-Osa Abu & Janina Kleemann & Mahmoud Ibrahim Mahmoud & Michael Thiel, 2022. "Environmental Contamination of a Biodiversity Hotspot—Action Needed for Nature Conservation in the Niger Delta, Nigeria," Sustainability, MDPI, vol. 14(21), pages 1-21, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:21:p:14256-:d:959913
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    References listed on IDEAS

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    1. Anna Bruederle & Roland Hodler, 2017. "The effect of oil spills on infant mortality: Evidence from Nigeria," NCID Working Papers 03/2017, Navarra Center for International Development, University of Navarra.
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