Introduction
Study area and methods
Year | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | Sum |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Blue Tit Parkland | 27 | 29 | 22 | 17 | 22 | 13 | 17 | 25 | 28 | 22 | 25 | 15 | 33 | 25 | 320 |
Blue Tit Forest | - | - | 20 | 32 | 50 | 37 | 21 | 42 | 53 | 26 | 29 | 8 | 15 | 13 | 346 |
Nest-boxes (Parkland) | 189 | 189 | 189 | 178 | 178 | 178 | 178 | 178 | 178 | 182 | 184 | 187 | 186 | 186 | - |
Nest-boxes (Forest) | - | - | 110 | 197 | 246 | 246 | 244 | 241 | 244 | 246 | 296 | 296 | 297 | 297 | - |
Results
Y-variable | Covariate | Effect | Df | F | p |
---|---|---|---|---|---|
Breeding success (arcsine transformed) | Warmth sum | Intercept | 1;649.1 | 100.0 |
<0.001
|
Site | 1;649.1 | 23.9 |
<0.001
| ||
Warmth sum | 1;648.9 | 2.3 | 0.14 | ||
Site*Warmth sum | 1;648.9 | 25.8 |
<0.001
| ||
N rainy days | Intercept | 1;648.2 | 598.7 |
<0.001
| |
Site | 1;648.2 | 8.7 |
0.003
| ||
N rainy days | 1;649.2 | 1.4 | 0.244 | ||
Site*N rainy days | 1;649.2 | 6.5 |
0.011
| ||
N fledglings (square-root transformed) | Warmth sum | Intercept | 1;649.3 | 172. 7 |
<0.001
|
Site | 1;649.3 | 23.4 |
<0.001
| ||
Warmth sum | 1;649.1 | 0.01 | 0.93 | ||
Site*Warmth sum | 1;649.1 | 27.4 |
<0.001
| ||
N rainy days | Intercept | 1;648.6 | 1484.4 |
<0.001
| |
Site | 1;648.6 | 7.9 |
0.005
| ||
N rainy days | 1;649.3 | 0.3 | 0.57 | ||
Site*N rainy days | 1;649.3 | 3.1 | 0.08 |