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Ngoulou, C. and Lenga, A. (2026) Macroinvertebrates from Two Lotic Environments: The Lésio River in a Rural Area and the Mfilou River in an Urbanized Environment, Republic of Congo. International Journal of Biological and Chemical Sciences, 18, 1283-1295.

has been cited by the following article:

• TITLE: Biological Assessment of Pollution in the Mfilou River Using Benthic Macroinvertebrates, Congo-Brazzaville

  AUTHORS: César Ngoulou, Honest Freedom Poaty Ngot, Victor Mamonékéné, Ange Ghislain Zassi-Boulou, Lérège Aulne Batiabo Mikémbi, Samie Miriame Mabika Moussounda, Arsène Lenga

  KEYWORDS: Biological Indexes, Aquatic Ecosystems, Integrity Status, Biodiversity

  JOURNAL NAME: Natural Resources, Vol.17 No.8, August 4, 2026

  ABSTRACT: This study assesses pollution in the Mfilou River using only benthic macroinvertebrates collected from five sampling stations during four sampling campaigns alternating between the dry and rainy seasons, from 2018 to 2020. Specimens were collected, identified, and classified. The Chironomidae index, the Normalized Global Biological Index (IBGN) and the Family Biotic Index (FBI) were used to determine the different levels of sediment-related pollution and organic pollution. The results show moderate pollution linked to sediments at the Maraîchère Zone station and organic pollution of intensity ranging from net to severe in the Mfilou River.