Table 1.
Galapagos sea lions and Galapagos fur seals Principal Component (PC) loadings.
Figure 1.
Galapagos sea lions and Galapagos fur seals diving variables cluster trees.
Galapagos sea lions (Zw) and Galapagos fur seals (Ag) cluster trees of diving variables from Hierarchical Cluster Analysis (Mar. & Oct. 2009) at Cabo Douglas, Fernandina Island. A. Sea lions, B. Fur seals and C. Sea lions and fur seals together. Line indicates the Euclidean distance chosen to define groups.
Table 2.
Galapagos sea lions and Galapagos fur seals diving variables.
Figure 2.
Galapagos fur seals and Galapagos sea lions frequency of mean dive depths.
Galapagos fur seals (A) and Galapagos sea lions diving strategies (B–D) frequency of mean dive depths during day and night (Mar. & Oct. 2009) at Cabo Douglas, Fernandina Island. Black bar shows day hours.
Figure 3.
Galapagos sea lions and Galapagos fur seals dive depth histograms.
Galapagos sea lions and Galapagos fur seals dive depth histograms (Mar. & Oct. 2009) at Cabo Douglas, Fernandina Island. The different sea lion diving strategies are shown separately (A, B & C, grey columns) in comparison to fur seals (black columns in A–C). (D) The 3 strategies together with fur seals.
Figure 4.
Galapagos sea lion and Galapagos fur seal percentage and mean depth of overlapping night dives.
Percentage of dives (A) and mean dive depth of dives (B) for three Galapagos sea lion diving strategies and Galapagos fur seals covering the range of fur seals dive depth (0–130 m) during night time (Mar. & Oct. 2009) at Cabo Douglas, Fernandina Island.
Table 3.
Galapagos sea lions and Galapagos fur seals % of night dives by night hour.
Figure 5.
Galapagos sea lions and Galapagos fur seals dive depth maximum efficiencies.
Galapagos sea lions diving strategies (B–D) and Galapagos fur seals (A) mean dive depth maximum efficiencies (Mar. & Oct. 2009) at Cabo Douglas, Fernandina Island.
Figure 6.
Galapagos sea lions and Galapagos fur seals foraging trips and foraging ranges.
Galapagos sea lions and Galapagos fur seals foraging trips (A) and foraging ranges based on 95% contour kernel analysis (B & C) (Mar. & Oct. 2009). The study colony Cabo Douglas, Fernandina Island is indicated by a yellow circle.
Figure 7.
Galapagos sea lions and Galapagos fur seals foraging range overlap.
Galapagos sea lions and Galapagos fur seals overall foraging range overlap (A) and overlap between fur seals and each sea lion diving strategy (B–D) based on 95% contour kernel analysis (Mar. & Oct. 2009) at Cabo Douglas, Fernandina Island.
Table 4.
Galapagos sea lions (Zw) and Galapagos fur seals (Ag) foraging range and % foraging range overlap.