Skip to main content
Fig. 5 | Movement Ecology

Fig. 5

From: Land cover and NDVI are important predictors in habitat selection along migration for the Golden-crowned Sparrow, a temperate-zone migrating songbird

Fig. 5

The relative selection strength (RSS) results for habitat selection along fall migration in 2019–2020 for Golden-crowned Sparrows wintering in northern California. A The RSS for NDVI and B the RSS for habitat types across different NDVI values. In panel A, the black line shows the RSS for NDVI in the absence of the land cover types in the model (needleleaf forest, shrubland and grassland). The green line shows the RSS for NDVI when needleleaf forest is present and the blue line shows the RSS for NDVI when shrubland is present. Panel B shows the selection strength for needleleaf forest and shrubland when other habitat types in the model are absent for minimum, mean, and maximum NDVI values to further demonstrate the interaction of habitat types and NDVI. These graphs compare the likelihood of selecting a site compared to another site set at the mean value of the variable (panel A), or between presence and absence of the habitat types (panel B; specifically, the comparison is between presence of the habitat type to absence of all habitat types in the model). The logarithmic value of the RSS is zero when the two locations being compared are identical (i.e. RSS = 1); therefore, the dashed line represents “no selection” as it intersects with the mean value (panel A) or absence of the habitat types (panel B)

Back to article page