Table 3. Model-averaged parameter estimates based on six general linear models relating the nest success of dabbling ducks as a function of latitude and longitude, country (Canada vs. the United States), and year in the North American Prairie Pothole Region between 1935 and 2006. SE refers to standard error, and t = estimate/SE. Parameters in which t > 1.96 have 95% confidence intervals that do not include 0.
| |
| |
|
Parameter |
Estimate |
SE |
t |
| |
|
Intercept |
247.5 |
132.2 |
1.87 |
|
Latitude |
-0.01 |
0.007 |
-1.91 |
|
Longitude |
-0.01 |
0.003 |
-2.84 |
|
Country |
115.7 |
122.0 |
0.95 |
|
Year |
-0.25 |
0.13 |
-1.88 |
|
Year*Country |
-0.19 |
0.20 |
-0.94 |
|
Year² |
0.00007 |
0.00004 |
1.88 |
|
Year²*Country |
0.00005 |
0.00006 |
0.93 |
|
| |
|