Aquatic Environment and Biodiversity Annual Review 2012

AEBAR 2012: Protected species: Seabirds
Table 5.7: Summary of seabirds observed captured in bottom longline fisheries 2002–03 to 2010–11.
Declared target species are: LIN, ling; SNA, snapper; BNS, bluenose; HPB, hapuku or bass. Data version
v20121101.
Declared target species
Species or group LIN SNA BNS HPB Total
Salvin's albatross 51 0 0 0 51
Chatham Island albatross 18 0 0 0 18
Southern Buller's albatross 4 0 3 0 7
Campbell albatross 0 0 2 1 3
Wandering albatrosses 2 0 1 0 3
White capped albatross 2 0 0 0 2
Black browed albatrosses 1 0 0 0 1
Indian yellow-nosed albatross 1 0 0 0 1
Southern royal albatross 1 0 0 0 1
Albatross indet. 2 0 0 0 2
All albatrosses 82 0 6 1 89
White chinned petrel 217 0 2 0 219
Grey petrel 79 0 0 0 79
Sooty shearwater 68 0 0 1 69
Black petrel 0 28 14 7 51
Flesh footed shearwater 0 36 0 3 39
Cape petrels 24 0 0 0 24
Common diving petrel 23 0 0 0 23
Great winged petrel 0 0 0 6 6
Fluttering shearwater 0 4 0 0 4
Northern giant petrel 4 0 0 0 4
Prions 4 0 0 0 4
Storm petrels 3 0 0 0 3
Gannets 0 2 0 0 2
Pied shag 0 2 0 0 2
Black backed gull 0 1 0 0 1
Buller's shearwater 0 1 0 0 1
Crested penguins 1 0 0 0 1
Giant petrel 1 0 0 0 1
Red billed gull 0 1 0 0 1
Other birds indet 1 10 0 0 11
All other birds 425 85 16 17 545
All birds observed 507 85 22 18 634
Approx. proportion obs 0.20 0.01 0.01 0.01 0.10
Model-based estimates of captures can be combined across trawl and longline fisheries (Figure 5.7).
Summed across all bird taxa, trawl, surface longline, and bottom longline fisheries account for 55%,
21%, and 24% of captures, respectively, but there are substantial differences in these proportions
among seabird taxa. A high proportion (87% between 2003 and 2011) of white-capped albatross
captures are taken in trawl fisheries with almost all of the remainder taken in surface longline
fisheries. The trawl fishery also accounts for 89% of sooty shearwaters captured, with most of the
remainder taken by bottom longliners. The proportion captured by trawl fisheries reduces to 53% for
all other albatrosses combined, with 30% and 17% taken in surface and bottom longline fisheries,
respectively. Bottom longline and trawl take similar proportions of the white-chinned petrels captured
(43% and 50%, respectively).
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