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 record...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,展开更多
Although small scale mining management is a complex task,many countries in the world have managed to develop mining management regimes that can improve the economic and environmental efficiency of the small scale mini...Although small scale mining management is a complex task,many countries in the world have managed to develop mining management regimes that can improve the economic and environmental efficiency of the small scale mining sector.This paper attempts to explore the mental picture of opportunities and challenges of the environmental management in small scale mining in Tanzania focusing on展开更多
文摘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,
文摘Although small scale mining management is a complex task,many countries in the world have managed to develop mining management regimes that can improve the economic and environmental efficiency of the small scale mining sector.This paper attempts to explore the mental picture of opportunities and challenges of the environmental management in small scale mining in Tanzania focusing on
