Fig. 3.

Large-scale changes in krill populations and physical conditions in the Scotia Sea. (A) Mean annual (January through December) air temperature (°C) and sea-ice extent (>15% ice concentration) around the Antarctic Peninsula. Air temperature and sea-ice extent are significantly correlated (r ≥ 0.7; P < 0.05) over the 30-y time series. (B) Per-capita krill recruitment and krill abundance for the Elephant Island region of the South Shetland Islands derived from annual net-tow surveys of the region (36).