Time spent in exclusive economic zones of southern oceans by non-breeding Wandering Albatrosses (Diomedea spp.): Implications for national responsibilities for conservation
Dg. Nicholls et al., Time spent in exclusive economic zones of southern oceans by non-breeding Wandering Albatrosses (Diomedea spp.): Implications for national responsibilities for conservation, EMU, 100, 2000, pp. 318-323
Fourteen non-breeding Wandering Albatrosses of three tare, Diomedea exulans
exulans, D. e. gibsoni and D. e. antipodensis, were satellite-tracked betw
een 1992 and 1996 in southern oceans eastwards from 30 degreesE to 70 degre
esW for a total of 1128 days providing 3965 locations. Eight D. e. exulans
were tracked from July to November around Australian waters between 110 deg
rees and 160 degreesE and spent 52-100% of their time in the Australian Exc
lusive Economic Zone (EEZ). Three subsequently moved into, and two across,
the Indian Ocean. Three D. e. gibsoni were tracked in the Tasman Sea and th
e south-west Pacific Ocean. One tracked from September to November 1994 spe
nt 52% of its time in the EEZs of Australia and New Zealand. Two others tra
cked in January and February 1995 spent 23% and 33% of their time in Austra
lian and New Zealand EEZs in the Tasman Sea. Two of three D. e. antipodensi
s were tracked during 1996 in the southern Pacific Ocean from the New Zeala
nd EEZ to the Chilean EEZ. One returned to New Zealand waters and was track
ed for a total of 373 days. These three birds spent more than 54% of their
tracked time in EEZs. The considerable time spent by non-breeding Wandering
Albatrosses in EEZs gives host nations an opportunity to establish measure
s to reduce greatly their seabird bycatch losses from longline fishing. The
mobility of these albatrosses between the EEZs of different nations sugges
ts that such conservation measures could be further enhanced by nations par
ticipating in the International Convention on the Conservation of Migratory
Species of Wild Animals (the Bonn Convention).