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The Cape Floristic Region and the Succulent Karoo in southwestern Africa are both noted for their plant species richness and high levels of endemism. The southwestern tip of Africa is one of the world's five Mediterranean-type climate regions. The biodiversity in the Cape Floristic Region and Succulent Karoo is thought to be at least partly due to changes to the climate of these regions that have occurred since the middle Miocene. Annual species are usually a significant proportion of local flora in Mediterranean-type climate regions. Previous studies of species radiations in the Cape Floristic Region have concentrated on genera that predominantly contain perennial species. Nemesia (Scrophulariaceae) comprises c. 65 species of annual and perennial herbs and sub-shrubs that are native to southern and tropical Africa. Annuals make up a significant proportion (~75%) of Nemesia species. We have reconstructed a phylogeny of 23 Nemesia species using nucleotide sequences of the ITS, ETS and trnL-spacer regions. Species were grouped into five clades, two composed of annual species, one that contained two annual and one perennial species, one that contained one annual and two perennial species, and one that was predominantly composed of perennial species. Phylogenetic dating of the ITS + ETS based phylogenetic tree using penalised likelihood suggested the genus evolved during the Miocene, and that the majority of extant Nemesia species studied radiated during the Pliocene. Ancestral state reconstruction supports at least three separate origins of the annual habit from plants with a perennial life history. One origin can be traced to the late Miocene while the other two transitions occurred more recently during the Pliocene. The transition from perennial to annual life-histories in Nemesia may have been a response to climate change. [ABSTRACT FROM AUTHOR]

Africa's Protected Area (PA) estate includes some of the world's most iconic wildlife and wildlands and preserves ecosystem services upon which people depend. However, Africa's PAs are facing a growing array of threats resulting in significant degradation, factors compounded by chronic funding shortages. In this opinion piece, drawing from the available literature and collective experience of the author group, we look at the potential for collaborative management partnerships (CMPs) between state wildlife agencies and Non-Governmental Organisations (NGOs) to attract investment and technical capacity to improve PA performance. The three main CMP models—financial and technical support, co-management, and delegated management—yield median funding that is 1.5, 2.6 and 14.6 times greater than baseline state budgets for PA management. However, several factors limit the scaling of CMPs in Africa. Significant barriers include concerns from African governments, such as reluctance to engage in co-management and delegated CMPs due to perceptions that such partnerships may represent an admission of failure, result in a loss of revenues for government, or undermine sovereignty. There are also constraints associated with NGOs and donors that limit scaling of CMPs. We discuss how these issues might be addressed and propose a reframing of the discourse around CMPs. Specifically, we recommend that governments view CMPs as strategic, proactive tools that will enable them to unlock funding, investment and expertise for conservation and make recommendations to attract such investment. Preliminary evidence and the experience of the author group suggests that expanding CMPs for PAs could; improve PA management; share the costs of protecting Africa's PAs with the global community; build local capacity; help protect the ecosystem services upon which Africa's economies depend; stimulate rural development; and benefit local communities. [ABSTRACT FROM AUTHOR]

The SARS-CoV-2 virus and COVID-19 illness are driving a global crisis. Governments have responded by restricting human movement, which has reduced economic activity. These changes may benefit biodiversity conservation in some ways, but in Africa, we contend that the net conservation impacts of COVID-19 will be strongly negative. Here, we describe how the crisis creates a perfect storm of reduced funding, restrictions on the operations of conservation agencies, and elevated human threats to nature. We identify the immediate steps necessary to address these challenges and support ongoing conservation efforts. We then highlight systemic flaws in contemporary conservation and identify opportunities to restructure for greater resilience. Finally, we emphasize the critical importance of conserving habitat and regulating unsafe wildlife trade practices to reduce the risk of future pandemics.