Abstract
Variation of Organic matter in mangroves sediments
Abstract
Mangrove ecosystems are major zones of sediment accumulation and organic matter preservation, playing a key role in coastal carbon storage and depositional processes.This study investigates the vertical distribution of organic matter in sediment cores collected from three mangrove environments in Cameroon: Koo mangrove located in the central zone of the Wouri Estuary, DiBamba mangrove situated in the eastern sector of the estuarine system, and Mungo mangrove. Sediment cores were collected from 1–144 cm (Koo), 1–177 cm (DiBamba), and 1–178 cm (Mungo).
Organic matter content was determined using the Loss on Ignition (LOI) method. Samples were oven-dried at 105 °C for 48 hours to remove moisture, combusted at 550 °C for 4 hours to oxidize organic matter, and heated at 950 °C for 2 hours to differentiate mineral fractions. Organic matter was calculated gravimetrically.Results indicate that Koo mangrove exhibits the highest mean organic matter content (38.43% ± 0.12), followed by Mungo (27.37% ± 0.09), while Di Bamba shows the lowest mean value (22.3% ± 0.13). The low standard deviation values indicate relatively limited variability in organic matter within each core. The vertical trends demonstrate variability with depth, reflecting differences in organic input, sedimentation rate, and burial processes among the three mangrove systems. These findings highlight spatial contrasts in organic matter preservation within the Wouri estuarine depositional environment.
Faculty Advisor
POOJA MOOHAN
Department/Program
Geosciences
Submission Type
in-person poster
Date
4-13-2026
Rights
Copyright the Author(s)
Recommended Citation
Mbaye, Fatou A.
(2026)
"Variation of Organic Matter in Mangroves sediments,"
SACAD: Scholarly Activities: Vol. 2026, Article 15.
Available at:
https://scholars.fhsu.edu/sacad/vol2026/iss2026/15
