The New Running Frog of Jozani-Chwaka National Park,Zanzibar,Tanzania(Kassina spp.)

The Running Frogs(Kassina spp.) are members of the Hyperoliidae,a family that is restricted to sub-Saharan Africa.Although summary information exists on the amphibian fauna of Zanzibar,only K. maculata has been recorded on Unguja,the largest of the islands in Zanzibar.Recent field surveys conducted in Jozani-Chwaka National Park revealed the presence of a frog in the genus Kassina that differs from all known species and,based on current knowledge,is endemic to Zanzibar.A new running frog species of Kassina was discovered from Jozani-Chwaka National Park,Zanzibar,Tanzania in 2006.It is distinguished from other species in its genus,by an advertisement call,that is pulsed,

The Status of Canopy Density and above Ground Biomass along the Northern Coastal Forest Zone of Tanzania

Canopy density and forest biomass estimation are critical for understanding of the carbon cycle, climate change and detecting health status of the forest ecosystems. This study was conducted on the coastal forests reserves in Zanzibar and mainland Tanzania. A systematic sampling design was used to establish a total of 110 temporary sample plots in all study sites. The stratification of the forests was adopted to identify closed forest patches with less anthropogenic effects. The study assessed the forest canopy density and above ground biomass with relative carbon stock for closed forest classes. Jozani Chwaka Bay National Park in Zanzibar recorded higher average canopy densities of 63% followed by Ngezi (46%), Pugu forests (26%) and Kazimzumbwi (16%). However, Ngezi forest had higher forest biomass than all study sites with the overall mean AGB of 138.5 tAGB/ha equivalent to carbon stock of 67.9 tC/ha. Tree species, Bombax rhodognaphala (Msufi mwitu) and Antiaris toxicaria (Mgulele) recorded the highest biomass of 1099 tABG/ha and 703 tAGB/ha (equivalent to 538 tC/ha and (345 tC/ha)) respectively. The study revealed that about 35% of the total closed forest patches at Pugu FR were covered by lower canopy density which accounted about 490 ha. Kazimzumbwi FR was dominated by lower canopy density which represented about 64% of the total forest cover area (1750 ha).