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

Table 1

Number of observed individuals of T. cristatus (Tc) and L. vulgaris (Lv), the first and last day of observation, the number of observation days, and the number of observation rounds for the period 2010 to 2014.

Year	2010	2011	2012	2013	2014
Number of ind. Tc	200	170	396	326	368
Number of ind. Lv	1240	1088	2663	2066	1177
First obs. day Tc	Apr. 7	Apr. 3	Mars 17	Apr. 11	Feb. 27
Last obs. day Tc	May 19	Apr. 25	May 11	May 7	May 9
First obs. day Lv	Apr. 7	Apr. 4	Mars 17	Apr. 11	Mars 7
Last obs. day Lv	May 19	Apr. 29	May 11	May 7	May 9
Number of obs. days	34	27	40	23	39
Number of obs. rounds	109	79	200	139	121

On April 7 no observations of L. vulgaris were made because of too many T. cristatus.