CCAMLR

1. South Africa is seeking GEF assistance to support capacity building and training to implement scientific research and monitoring in the Antarctic and Southern Ocean ecosystems, including:

• Assisting with identifying areas for special protection or management and developing management plans;
• Developing a collaborative ecosystem assessment and monitoring programme for the Antarctic LME, measuring potential physical and ecological degradation and destabilisation from the effects of climate change (particularly ocean acidification) and other factors
• Identifying and managing the risk from marine alien invasive species as a result of human visits (vessels, scientists etc) as well as with changing ecosystem conditions resulting from climate change;
• Improving understanding of fishing effort and identification of overfishing of target species and associated or species dependent on the same ecosystem taken in Antarctic and Southern Ocean fisheries.

2. South Africa is seeking CCAMLR support for this project. As the multilateral agency responsible for the conservation of Antarctic marine living resources, and the organization for which South Africa is seeking GEF support to engage more effectively, CCAMLR has a key role in this initiative.

Somatic growth of pelagic invertebrates is controlled by temperature and food, both of which vary in space and time. Because species specific responses in growth rates to environmental variability may affect populations through changes in reproductive potential, measuring spatial and temporal variability in growth rates of highly abundant zooplankton is critical to predict the impact of climate change on pelagic ecosystems.  Here, we used length frequencies from bi-annual surveys conducted one month apart to estimate growth rates of one the most euphausiids in the Southern Ocean, Thysanoessa macrura. We analyzed data from four separate years (1995, 1998, 2001, 2004) that varied widely in temperature and primary production. Stations within the surveys were grouped by water mass (warm Antarctic Circumpolar Current (ACC) water and cold Weddell Sea water) to assess spatial and inter-annual variability in growth. Growth rates of T. macrura varied between years and water masses, ranging from -0.037 mm day^-1 in Weddell Sea water in 2004 to 0.081 mm day^-1 in ACC water in 1995. Growth rates were higher in ACC water than in Weddell Sea water during all years. Growth rates were strongly correlated with temperature but were not significantly correlated with chl-a concentration. These results suggest that the growth rates of T. macrura may increase in regions exhibiting warming trends, such as the Antarctic Peninsula. This contrasts with published data on the growth rates of Euphausia superba, which is predicted to be impacted negatively by climate warming.