Aquatic Environment and Biodiversity Annual Review 2012

AEBAR 2012: Protected species: Sea lions
Threat status • NZ: Nationally Critical, Criterion C 14 , Range Restricted 15 , in 2010 16
• IUCN: Vulnerable, A3b 17 , in 2008 18
Number of
interactions 19
• 81 estimated interactions (95% CI: 26-259) in trawl fisheries in 2010-11
• 29 estimated captures (95% CI: 17-43) in trawl fisheries in 2010-11
• 6 observed captures in trawl fisheries in 2010-11
Trend in interactions Trawl fisheries:
14 A taxon is listed as ‘Nationally Critical’ under criterion C if the population (irrespective of size or number of
sub-populations) has a very high (rate of) ongoing or predicted decline; greater than 70% over 10 years or three
generations, whichever is longer (Townsend et al. 2008).
15 A taxon is listed as ‘Range Restricted’ if it is confined to specific substrates, habitats or geographic areas of
less than 1000 km 2 (100 000 ha); this is assessed by taking into account the area of occupied habitat of all subpopulations
(Townsend et al. 2008).
16 Baker et al. (2010).
17 A taxon is listed as ‘Vulnerable’ if it is considered to be facing a high risk of extinction in the wild. A3b refers
to a reduction in population size (A), based on a reduction of ≥ 30% over the last 10 years or three generations
(whichever is longer up to a maximum of 100 years (3); and when considering an index of abundance that is
appropriate to the taxon (b; IUCN 2010).
18 Gales (2008).
19 For more information, see: http://data.dragonfly.co.nz/psc/.
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