420 



Fishery Bulletin 104(3) 



25 



20 



15 



10 



5 



0- 



25- 



20 



15 



10- 



5- 



0- 



25 



20 



15 



10 



5 







25 



20 



„ 15 

 O 



^ 10 



- 5-1 



B 

 ro 



 ^ nij;c^w>Wj^|\^^ 



0- 

 (D 



Q- 25- 



B 20 

 £ 15- 

 g 10 



5- 







25 



20- 



15- 



10- 



5 







25 



20 



15 



10 



5 



0- 



25 



20- 



15- 



10- 



5 



0- 



DST129 



May 30 Jun 3 Jun 7 Jun 1 1 Jun15 Jun 1 



DST 22 



May 19 May 21 May 23 May 25 May 27 y,/lay 29 May 31 

 DST 257 



DST 97 



May 25 May 27 May 29 May 31 



DST 247 



May 28 



Jun 4 June Jun 8 Jun 10 Jun 12 Jun 14 Jun 16 Jun 18 



DST 45 



DST 238 



Jun 2 Jun 3 Jun 4 Jun 5 Jun 6 Jun 7 

 DST 245 



r I r- 



May 31 Jun 1 Jun 2 Jun 3 Jun 4 Jun 5 Jun 6 Jun 7 Jun 8 

 DST 98 



May 28 Jun 1 Jun 5 Jun 9 Jun 13 Jun 17 



DST 103 



^^^-'•A^jL^yJ^^^'A^,.^^ 



— 1 ' r- 



May 26 May 28 May 30 Jun 1 Jun 3 Jun 5 Jun 7 

 DST 293 



June Jun 8 Jun 10 Jun 12 Jun 14 . .i 



DST 267 KM 



May31 Jun 14 Jun 28 Jul 12 Jul 26 Jun 8 Jun 15 Jun 22 Jun 29 Jul 6 Jul13 Jul 20 Jul 27 



DST 107 



''V^Wly^^^^_,w^(^/^,.J.,,^^ 



May 28 Jun 1 Jun 5 Jun 9 Jun 13 Jun 17 Jun 21 



Figure 2 



Hourly temperatures and dates recorded by 15 data storage tags attached to Atlantic salmon iSalmo salar) 

 postsmolts at Campbellton River, 2002. 



ally consistent. The cooler temperatures experienced by 

 the fish during the day indicated that they were deeper 

 in the water column during day than during the night. 

 Diurnal trends in water temperatures also have to be 



considered because stream temperatures are generally 

 warmer during the day than at night. Warmer tem- 

 peratures during the day are generally the case for sea 

 temperatures as well (^=5.00, P<0.0001) although less 



