Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Time series of annual proportion of Atelopus species that began to decline (YOD) and that were observed for the last time (LYO) fit with the GAM. Shown are the final fitted cubic spline functions (solid lines) and associated 95% confidence bands (dashed lines). The relationship between year and both YOD (A) and LYO (B) was significantly nonlinear (df = 3.997, coefficient = 0.019, P = 0.006, R2 = 68.17; and df = 3.997, coefficient = 0.011, P = 0.020, R2 = 58.34, respectively).
