Figure 5: Linear model of the relationship between the percent change in occupancy of shorebird species from 1994-97 to 2019 and their Species Temperature Index. Intercept = -95.49, Slope = 55.72, p = 0.01, Adjusted R² = 0.51. The Species Temperature Index is the mean June Temperature from 1970 to 2000 across the species range. See Table 2 for a legend of 4-letter bird species codes

TABLES

Table 1: Generalized linear model results for change in occupancy, richness and density of breeding shorebirds (all species) from 1994-97 to 2019 in Foxe the Rasmussen Lowlands and Foxe Basin (n = 64). The models included time period as the main predictor of interest, region to control for any regional effects, and habitat to control for any habitat effects (of upland and lowland habitat). The occupancy model used a binomial distribution, and the species richness and density models used negative binomial distributions. The intercept represents the parameter estimate for reference categories (1994-97, Foxe Basin, lowland). The estimate for the parameters in brackets (2019, Rasmussen, upland) represent the difference for that category and the reference level.