A study was carried out to assess primary production and associated export flux in the coastal waters of the western Antarctic Peninsula at an oceanographic time-series site. New, i.e. exportable, primary production in the upper water-column was estimated in two ways; by nutrient deficit measurements, and by primary production rate measurements using separate C-labelled radioisotope and N-label...

A study was carried out to assess primary production and associated export flux in the coastal waters of the western Antarctic Peninsula at an oceanographic time-series site. New, i.e. exportable, primary production in the upper water-column was estimated in two ways; by nutrient deficit measurements, and by primary production rate measurements using separate C-labelled radioisotope and N-label...

A study was carried out to assess primary production and associated export flux in the coastal waters of the western Antarctic Peninsula at an oceanographic time-series site. New, i.e. exportable, primary production in the upper water-column was estimated in two ways; by nutrient deficit measurements, and by primary production rate measurements using separate C-labelled radioisotope and N-label...

This is a retrospective report on the importance of Kark and Cassel's 1952 paper on community-oriented primary care (COPC). In 1978, WHO and UNICEF endorsed COPC. However, the ideas girding and framing this approach had first been given full expression in practice some four decades earlier. In Depression-Era South Africa, Sidney Kark, a leader of the National Department of Health, converted ...