Table 1 Summary of the main breeding parameters. Mean hatching date and standard deviation (SD), hatching success and chick survival at 15 days after hatching for the little auk and the Brünnich’s guillemot in the Svalbard archipelago.
Species | Colony | Year | Hatching date | Breeding performance (%) | ||
|---|---|---|---|---|---|---|
Mean | (SD) | Hatching success | Chick survival | |||
Little auk | Bjørndalen (Isfjorden) | 2007 | jul-10 | (5.6) | 88.1 | 81.0 |
2008 | jul-09 | (4.5) | 89.3 | 78.6 | ||
2009 | jul-12 | (3.5) | 79.5 | 56.4 | ||
2010 | jul-08 | (4.4) | 100 | 92.5 | ||
2011 | jul-10 | (5) | 77.8 | 81.5 | ||
2012 | jul-10 | (3.5) | 91.1 | 100 | ||
2013 | jul-13 | (2.7) | 87.5 | 92.9 | ||
2014 | jul-10 | (2.2) | 100 | 95.2 | ||
2015 | jul-08 | (2.7) | 80 | 89.5 | ||
2016 | jul-06 | (1.9) | 90 | 70 | ||
Brünnich’s guillemots | Diabasodden (Isfjorden) | 2011 | jul-03 | (3.2) | 87.9 | 75.9 |
2012 | jul-07 | (4.3) | 67.4 | 70.7 | ||
2013 | jul-05 | (5.5) | 69.9 | 71.8 | ||
2014 | jul-07 | (3.7) | 51.9 | 76.5 | ||
2015 | jul-03 | (5.9) | 83.1 | 80.8 | ||
2016 | jun-26 | 3.3 | 90 | 77.8 | ||
Ossian sarsfjellet (Kongsfjorden) | 2011 | jul-04 | (5.3) | 89.1 | 54.3 | |
2012 | jul-05 | (6.4) | 94.1 | 79.3 | ||
2013 | jul-04 | (6.5) | 85.5 | 77.1 | ||
2014 | jul-06 | (5.4) | 80.6 | 87 | ||
2015 | jul-02 | (7.1) | 89.9 | 91.8 | ||
2016 | jul-02 | (9.2) | 89.4 | 73.7 | ||
