Effect of Salinity and Substrate on the Emergence and Growth of Propagules of the Mangrove Species Rhizophora racemosa in the Sassandra-Dagbego Ramsar Complex, Côte d’Ivoire
Cossi Irénée Amenoudji, Souleymane Sanogo, Khévine Robaverge Djogli, Jean-Fabrice Adanvé, Kpedetin Frejus Ariel Sodedji
Annual Research & Review in Biology · pp. 21–31 · Published 26 Jun 2024
10.9734/arrb/2024/v39i72095Abstract
This study aimed to evaluate the behaviour of seeded propagules of Rhirophora racemosa (R. racemosa) on different substrates and under different salinity levels. Three substrates including sand, mud and a mixture of the two were tested together with tree salinity levels (low 5%, moderate 10% and high 25%). R. racemosa seedlings were more likely to emerge and grow under moderate and low salinity conditions. The propagules had significant early growth in mud compared to sand and mud-sand mixture. The combined effect of salt and substrate influenced significantly propagules performance in nursery (p<0.001). High propagules emergence and growth were observed in the combination mud and salt treatments as compared to sand and san-mud mixture substrates. These results provide valuable information for the management and restoration of mangroves, highlighting the optimal environmental conditions for the successful regeneration of this species.
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