
Blue petrel

Thinbilled prion

Antarctic Prion


Prelaying exodus

Incubation

Prelaying exodus

Incubation

Prelaying exodus

Incubation


Bathymetry (m)

3484 ± 434 ^{a}

3723 ± 453 ^{a,b}

4271 ± 290 ^{b}

4205 ± 509 ^{b}

3529 ± 548 ^{a}

3251 ± 515 ^{a}

Sea surface temperature (°C)

5.3 ± 2.0 ^{b}

3.5 ± 1.6 ^{a,b}

3.0 ± 2.5 ^{a}

1.6 ± 1.4 ^{a}

3.7 ± 1.7 ^{a,b}

2.4 ± 0.6 ^{a}

Chlorophyll a (mg/m^{3})

0.20 ± 0.02 ^{a}

0.22 ± 0.03 ^{a}

0.25 ± 0.10 ^{a}

0.29 ± 0.20 ^{a}

0.45 ± 0.09 ^{b}

0.30 ± 0.09 ^{a}

Wind speed (m/s)

11.4 ± 0.6 ^{b}

10.4 ± 1.6 ^{b,c}

10.2 ± 1.0 ^{c}

10.7 ± 1.3 ^{b,c}

9.8 ± 0.9 ^{c}

8.5 ± 0.6 ^{a}

WindU (west – to east, m/s)

8.9 ± 1.3 ^{b}

5.3 ± 2.5 ^{c}

7.0 ± 1.5 ^{b,c}

7.3 ± 2.4 ^{b,c}

4.8 ± 2.6 ^{a,c}

2.0 ± 2.7 ^{a}

WindV (south to north, m/s)

1.1 ± 1.1 ^{a}

0.1 ± 2.2 ^{a,b}

1.3 ± 0.9 ^{b}

−2.0 ± 1.6 ^{a}

−2.0 ± 0.9 ^{a}

−2.0 ± 2.2 ^{a,b}

 Bathymetry from ECMWF ETOPO1 Elevation, Daytime SST and Chlorophyll a from MODIS Ocean Aqua OceanColor (4 km, 8 day mean), wind from ECMWF Interim Full Daily SFC Wind (10 m above Ground), wind speed was calculated from the square root of the sums of squares of the V and U component. KruskalWallis ANOVAs were carried out for each parameter, to test for differences among the groups. All parameters differed (χ^{2} > 17.9, df = 5, p < 0.003), and similar superscript letters denote homogenous subsets