Effects of Temperature and Precipitation on Breeding Migrations of Amphibian Species in Southeastern Norway

Table 2

Variables considered in the fixed effect structure of the various candidate models for describing newt migration phenology pattern as a function of temperature and precipitation.

Candidate variables	Description
Accumulated temperature total (AT)	Degree days of daily mean temperatures in °C after 1 observation of migrating newts
Accumulated temperature 3 (AT3)	Degree days of daily mean temperatures in °C over the 3 last days since each respective migration observation
Accumulated temperature 5 (AT5)	Degree days of daily mean temperatures in °C over the 5 last days since each respective migration observation
Mean temperature (MT)	Mean air temperature of the last 24 hours since each respective observation
Mean temperature 3 (MT3)	Mean air temperature of the last 72 hours since each respective observation
Mean temperature 5 (MT5)	Mean air temperature of the last 120 hours since each respective observation
Precipitation (P)	Sum of precipitation values in mm during the last 24 hours since each respective observation
Precipitation 3 (P3)	Sum of precipitation values in mm during the last 72 hours since each respective observation
Precipitation 5 (P5)	Sum of precipitation values in mm during the last 120 hours since each respective observation