Table 1 Ice conditions in a 100 km radius circle from Prince Leopold Island (Nunavut, Canada) during the breeding season of northern fulmars (starting in May) and thick-billed murres (starting in June) between 2010 and 2013.
From: Arctic seabirds and shrinking sea ice: egg analyses reveal the importance of ice-derived resources
Year | 2010 | 2011 | 2012 | 2013 | Reproduction |
|---|---|---|---|---|---|
(a) Northern fulmars | |||||
Ice concentrations | |||||
Early-May (%) | 92.4 | 98.4 | 99.0 | 97.0 | Colony attendance |
Mid-May (%) | 95.6 | 80.2 | 99.0 | 93.3 | Departure for exodus |
Early-June (%) | 97.6 | 42.8 | 98.9 | 83.1 | Egg laying |
End-July (%) | 39.1 | 0.80 | 12.3 | 40.8 | Egg hatching |
Ice description (Early-May) | Patchy, large floes, access to open-water | Patchy, large floes, access to open-water | Dense pack ice, ice edge far away (>250 km E) | Dense pack ice, but ice margin close (50 km) | |
(b) Thick-billed murres | |||||
Ice concentrations | |||||
Mid-June (%) | 92.6 | 29.1 | 98.8 | 79.0 | Colony attendance |
Early-July (%) | 79.4 | 11.2 | 88.9 | 46.2 | Egg laying |
End-July (%) | 39.1 | 0.80 | 12.3 | 40.8 | Egg hatching |
Ice description (Mid-June) | Patchy, large floes, access to open-water | Open-water, ice-free | Dense pack ice, ice edge far away (>250 km E) | Dense pack ice, but ice margin close (50 km) | |
