Invasive alien species (IAS) are among the leading threats to biodiversity, food security and human well-being. Opuntia (prickly pear cactus) is one of the most widespread and naturalized in the arid and semi-arid areas of Kenya, with extreme effects on rural livelihoods and the environment. However, comprehensive information on the status of invasion in the country is lacking, which is crucial for developing strategies for prevention and management.

We review seven certification systems for verifying carbon trading from forestry and other land uses, and evaluate evidence of their effectiveness in generating social and environmental co-benefits. Published research on non-carbon co-benefits was located by searching the three principal bibliographic databases in this area of science: CABI, ISI Web of Science Core Collection and SCOPUS. We included studies published in English from 2000 to 2016. Our searches yielded 679 studies after duplicates were removed.

Variants of Indigenous forest management reflect distinct historical and political-economic contexts. Indigenous forest management was largely unrecorded in the colonial period and, in the present, can range from industrial to ecosystem-based forest management, autonomous management and rentier practices. Evidence of Indigenous forest management has assumed political importance in those nation-states that require historical evidence of past land use and occupancy as the basis for negotiation of Indigenous-titled lands.