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