Litterfall, flowering and fruiting phenology of Avicennia germinans were studied from June 1993 to November 1994 in three sites of the mangrove forest of the estuarine lagoonal complex Ciénaga Grande de Santa Marta-Exterior Right Delta of the Magdalena River. Soil interstitial salinity ranged between 7.6 and 161.5 for the three sites studied. Litterfall for the three sites was 17.67, 9.03 and 4.96 Mg ha-1 Y-1 respectively. Duration, bulk and synchronization of flowering and fruiting episodes, and the propagule size were different in the three sites. In favorable conditions the species flowered throughout the dry season and shedded its propagules during the wet season. Results suggest that trees from sites with high interstitial salinities reproduce at a level not high enough as to permit natural regeneration of the forest.
