What Future for Protected Areas? Analysing the Mismatch between South Africa's Pre-existing Protected areas System and the Declared vision in Contemporary Conservation Policy.

Designation of protected areas has enjoyed global application as a means of biodiversity conservation for over 100 years. National conservation policy is essential as a means of protecting biodiversity, but is contingent on, amongst others, changing values and international drivers, and remains dynamic in many countries. As conservation policies evolve, the role of pre-existing protected areas within broader strategies for conservation can become unclear, with consequences both for the ability of the conservation policies to achieve their stated goals, and also for biodiversity outcomes within a nation.

A Critical Evaluation of International Agreements Towards a Revised Categorization for Transfrontier Conservation Areas (TFCAs).

Transfrontier Conservation Areas (TFCAs) are widely promoted as an international instrument to achieve certain conservation, cooperation and developmental goals, especially within the Southern African Development Community (SADC). In the SADC context, the status of TFCAs is categorized based on the extent to which international agreements have been signed. These agreements take different forms such as treaties, memorandums of understanding (MoUs), protocols and bilateral agreements.

The effect of inhaled nitric oxide on shunt fraction in mechanically ventilated patients with COVID-19 pneumonia.

Background: Studies in patients with severe acute respiratory distress syndrome (ARDS) with refractory hypoxaemia suggest that inhaled nitric oxide (iNO) can be added to ventilatory strategies as a potential bridge to clinical improvement. However, the potential role of iNO as a management strategy in severe COVID-19 pneumonia remains unclear. The authors describe their clinical findings of using iNO for severe COVID-19 pneumonia in 10 patients with refractory hypoxaemia in a tertiary respiratory intensive care unit.