Publications by authors named "Moussa Abderamane"
The climate history of the Sahara desert during recent millennia is obscured by the near absence of natural climate archives, hampering insight in the relative importance of southerly (tropical) and northerly (midlatitude) weather systems at submillennial time scales. A new lake sediment record from Ounianga Serir oasis in northern Chad, spanning the Late Holocene without interruption, confirms that immediately before ca 4200 years ago, the Sahara experienced an episode of hyperaridity even more extreme than today's desert climate. The hypersaline terminal lake which formed afterwards never desiccated during the late Holocene due to continuous inflow of fossil groundwater, yet its water balance was sensitive to temporal variation in local rainfall and lake surface evaporation.
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- - The study investigated the presence of trematode parasites, specifically Schistosoma spp., among human populations near the lakes of Ounianga in Northern Chad, prompted by local health concerns and reports of infections in livestock.
- - Conducted in January 2019, the research involved a cross-sectional survey of 258 participants to test for infections, focus group discussions on health access, and surveys for intermediate host snails, with analyses employing both statistical and qualitative methods.
- - Results showed a 39.2% prevalence of S. haematobium infections, with a significant proportion suffering from heavy infections, while S. mansoni had a lower detection rate but lacked identifiable intermediate host snails, leaving its impact uncertain.