Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus)

Table 2 Duty cycle protocol of ear satellite transmitters (PTT) mounted on polar bears

Area	Year	Every day	Every 2nd day from	Every 4th day from	Working hours per day	Maximum daily transmissions	Repetition rate (s)
East Greenland, Baffin Bay, and Kane Basin SPOT-227B	2007	1 March–31 May		1 June	16	150	45/90^b
	2008			1 March	16	140	42.5/87.5^b
	2009	1 April–31 May		2 June	14	150	56/86^b
	2010	22 March–19 April		23 April	14	150	45/90^b
	2011	1–30 April		2 May	13	150	90
	2012	4–20 April		24 April	13	150	43.5/88.5^b
Baffin Bay and Kane Basin SPOT-305A	2013	5–19 April		23 April	13	150	44.5/89.5^b
Southern Beaufort Sea SPOT-227B	2009	Deployment date–^a		–	4	200	56
	2010	Deployment date–		–	4	200	56
Southern Beaufort Sea SPOT-227C	2011	Deployment date–		–	4	200	90^c
Chukchi Sea SPOT-227B/SPOT-227D	2010–2011	March–June	1 July	–	4	250	90

The bears were tagged in East Greenland, Baffin Bay, Kane Basin, the southern Beaufort Sea, and the Chukchi Sea, 2007–2013
^aThree PTTs transmitted every second day
^bRepetition rate in water/on land
^cOne PTT had repetition rate 60

ISSN: 2050-3385