Table
| Arctic fox. Adventdalen and Sassendalen. Portion of dens with pups | Arctic fox. Kongsfjorden. Portion of dens with pups | Svalbard ptarmigan. Density of territorial cocks in April. Number of cocks per square kilometre | |
|---|---|---|---|
| 2000 | 1.0 | 1.0 | 1.0 |
| 2001 | 0.3 | 0.6 | 1.1 |
| 2002 | 0.9 | 1.1 | 0.8 |
| 2003 | 0.2 | 0.5 | 1.3 |
| 2004 | 0.9 | 0.5 | 1.5 |
| 2005 | 0.7 | 0.1 | 1.5 |
| 2006 | 0.6 | 0.8 | 1.1 |
| 2007 | 0.2 | 0.6 | 1.2 |
| 2008 | 0.5 | 0.3 | 1.0 |
| 2009 | 0.8 | 0.4 | 0.6 |
| 2010 | 0.6 | 0.4 | 0.8 |
| 2011 | 0.5 | 0.3 | 0.6 |
| 2012 | 0.8 | 0.6 | 1.1 |