From: How animals distribute themselves in space: energy landscapes of Antarctic avian predators
Gentoo | Chinstrap | |||||
---|---|---|---|---|---|---|
Dec 2013 | Dec 2014 | Dec 2016 | Jan 2017 | |||
New I., South | New I., South | New I., North | Livingston I. | Deception I. | ||
Short trip | Long trip | |||||
Maximum dive depth [m] | 188.3 | 178.2 | 156.3 | 79.9 | 109.9 | 111.9 |
Median dive depth of pelagic dives [m] | 15.8 e (3–185.9) | 12.7 a,b (3–176.6) | 21.1 c (3–156.5) | 14.9 a (3–79.9) | 15.4 b (3–109.9) | 12.3 d (3–105.3) |
Kruskal-Wallis | χ2 = 322.3 df = 5, P < 0.001 | |||||
Median proportion of benthic dives (pBD) [%] | 24 (19–30) | 46 (33–66) | 63 (50–67) | 48 (39–53) | 26 (24–39) | 31 (24–43) |
Median proportion of pelagic dives (pPD) [%] | 76 d (70–81) | 54 a,b (34–67) | 37 a (33–50) | 52 a (47–61) | 74 c,d (61–76) | 69 b,c (57–76) |
Kruskal-Wallis | χ2 = 24.6 df = 5, P < 0.001 | |||||
Median number of dives per foraging trip (MND) | 283 a, c (202–337) | 291 a, b, c (193–471) | 298 a, b, c (241–331) | 215 a (156–268) | 402 b (299–744) | 369 c (205–497) |
Kruskal-Wallis | χ2 = 19.6 df = 5, P = 0.002 | |||||
Median dive duration (DD), benthic dives [s] | 156 a (142–177) | 155 a (150–199) | 176 a (157–202) | 81 b (71–96) | 90 b (82–95) | 70 c (60–85) |
Kruskal-Wallis | χ2 = 61.2 df = 5, P < 0.001 | |||||
Median dive duration (DD), pelagic dives [s] | 103 a (92–119) | 123 a, b (117–125) | 130 a (127–138) | 67 c (63–73) | 83 b (72–88) | 55 d (51–69) |
Kruskal-Wallis | χ2 = 69.8 df = 5, P < 0.001 | |||||
Minimum benthic bottom time (mBBT) [s] | 2 | 3 | 2 | 2 | 3 | 2 |