Summary of Abstract Submission

Abstract Submission No. IO50-03-0020PresentationPoster

PRODUCTIVITY OF MONO AND MIXED MANGROVE FORESTS WITH CONTROLLED ACCCESS IN MIDA CREEK, KENYA

Dr. Virginia Wang'ondu*1

1 University of Nairobi, Kenya

ABSTRACT :

Mangroves are important for their contribution to the productivity of coastal and near shore ecosystems and carbon sequestration. In Kenya mangrove forest conservation is challenged by lack of a comprehensive management plan and resources for adequate monitoring. Our objective was to establish the impact of accessibility to the mangrove forest on species and stand productivity of the monospecific and mixed stands in Mida creek in Watamu Marine National Reserve. Mangrove litter was collected from July 2010- July 2012 by use of litter traps in a 10 10m plots. Litter was harvested monthly dried; sorted into leaves, stipules, reproductive parts, propagules, twigs and weighed. The most preferred size classes of Rhizophora mucronata for harvesting were the 6.1-9.0 cm and 9.1-13.0 cm were few or completely missing in all study sites compared to other species. This indicated that overharvesting of the mangroves was still taking place despite the protection of the reserve and preference of R. mucronata by the local community. R. mucronata and Ceriops tagal were the most productive species at 18.61 and 9.49 t ha-1 yr-1 . The mixed stands showed high litter productivity (19.78 t ha-1 yr-1) than mono specific stands (12.74 t ha-1 yr-1). The mixed species forest with the closest proximity to human settlement and with frequent cutting was observed to have the highest productivity (28.47 t ha-1 yr-1 ). Results indicate the need for a better management plan for mangrove forests even in controlled cutting areas and establishment of multispecific mangrove stands where possible.