Figure 4
From: Warming Arctic summers unlikely to increase productivity of shorebirds through renesting
Estimated daily survival rates (± SD) of Dunlin chicks near Utqiaġvik, Alaska, 2008–2009 as a function of chick age for average hatch date for initial (3 July, dashed lines and open circles) and replacement (15 July, solid lines and closed circles) nests, and invertebrate biomass (1 and 25 mg/trap/day). Daily survival rates and associated SDs were estimated using 10,000 simulations of the beta estimates assuming a multivariate normal distribution and the variance–covariance matrix from the top-ranked model (HD*A2 + I; where HD = hatch date, A = chick age, and I = daily invertebrate biomass; Table 1). Symbol locations represent the same chick age for each combination of hatch date and invertebrate abundance, but symbols are offset so SDs are visible.
