Figure 4

(A) At-sea distribution of mean time spent within 5 km grid cells of male Antarctic fur seals (AFS) instrumented at the South Orkney Islands in 2016 that remained within the broad western Antarctic Peninsula and Scotia Sea region (N = 18). The overlap between the 95% Utilisation Distribution home range of male AFS and those of the commercial krill fishery operating, (B) continuous pumping and, (C) traditional trawling fishing gear are shown. Thick black lines indicate the CCAMLR Statistical Subareas 48.1 and 48.2 (labelled) while thinner lines show the Small Scale Management Units (SSMU) originally considered for managing the fishery at smaller than Subarea scales. (D) Temporally there was a pronounced difference in how the fishery was distributed contingent on what gear was used, with continuous pumping trawlers (red dots and curvilinear line) beginning the season in the Bransfield and Gerlache Straits before fishing off the western end of the South Orkney Islands between January–March and subsequently moving back into the Bransfield Strait until late May/early June. In contrast, vessels using traditional trawls (blue dots and curvilinear line) fished within the Bransfield and Gerlache Straits from mid January until their departure in late May. Thus, overlap between fishing vessels and male AFS foraging varied both spatially and temporally depending on the fishing gear being used. The median fledging date of Chinstrap penguins is included here to facilitate comparisons of spatiotemporal overlap similar to that shown in Fig. 2. The figure was prepared using Quantarctica 3.12 (www.npolar.no/quantarctica)⁵⁹.