Friday, May 16, 2008

Franciscana Dolphins - Tracking Day #74

All of the banks are outside the mouths of the bays, with Kona to the south, Kure/Tunken in the middle, and Nahuel having returned to the vicinity of Canal de Culebra.

Thursday, May 15, 2008

Franciscana Dolphins - Tracking Day #72

Kure/Tunken have moved north to Canal de Culebra, while Nahuel has begun to return to Bahia San Blas. Kona remains in Bahia San Blas. Based on data from April 26 - May 7 , the following patterns were observed for the three dolphins with TDRs:

Dive Duration (44,111 dives):
0-30 seconds = 37% to 51% of dives
30-60 sec = 25% to 29% of dives
60-90 sec = 21% to 28% of dives
Max duration = >300 sec for all 3 dolphins (a few dives)

Dive Depth (44,884 dives):
0-5 meters = 40% to 53% of dives
5-10 m = 27% to 38% of dives
10-15 m = 12% to 23% of dives
Max depth = 25-35 m

Tuesday, May 13, 2008

Franciscana Dolphins - Tracking Day #71

Nahuel continues his movements to the north of the others, while they remain in Bahia San Blas.

Monday, May 12, 2008

Franciscana Dolphins - Tracking Day #70

Kure/Tunken remain together in Bahia San Blas, as does Kona. Nahuel is moving to the north, near Canal de Culebra.

Franciscana Dolphins - Tracking Day #69

Kure/Tunken are making typical movements through Bahia San Blas. Kona is at the mouth of the bay, and Nahuel continues his new movement pattern offshore of the sandbanks.

Franciscana Dolphins - Tracking Day #68

Kure/Tunken have moved well inside the bay, while Kona and Nahuel remain outside, apparently separated. Nahuel is in fairly deep water, farther offshore. Pablo Bordino and Agustina Caride have returned to Argentina after participating in the CZS bottlenose dolphin health assessment program in Saraasota Bay.