Aquatic Environment and Biodiversity Annual Review 2012

AEBAR 2012: Protected species: Seabirds
For white-capped albatross, captures rates declined between 2002/03 and 2010/11, and especially up
to 2006/07, in the major offshore trawl fisheries for squid and hoki (Figure 5.8) but showed no trend
for inshore trawlers and increased for surface longliners targeting southern bluefin tuna. Together,
these fisheries account for 82% of all estimated captures of white-capped albatross in these years.
1000
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100
0
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White-capped albatross captures and capture rates
Captures
Squid trawl: 39% of captures
2003 2004 2005 2006 2007 2008 2009 2010 2011
Inshore trawl: 26% of captures
2003 2004 2005 2006 2007 2008 2009 2010 2011
SBT longline: 11% of captures
2003 2004 2005 2006 2007 2008 2009 2010 2011
Hoki trawl: 6% of captures
2003 2004 2005 2006 2007 2008 2009 2010 2011
Fishing year
84
10.0
8.0
6.0
4.0
2.0
0.0
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.12
0.10
0.08
0.06
0.04
0.02
0.00
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Capture rate
2003 2004 2005 2006 2007 2008 2009 2010 2011
2003 2004 2005 2006 2007 2008 2009 2010 2011
2003 2004 2005 2006 2007 2008 2009 2010 2011
2003 2004 2005 2006 2007 2008 2009 2010 2011
Figure 5.8: Model-based estimates of captures (left panels) and capture rates (right panels, captures per
100 trawl tows or 1000 longline hooks) of white capped albatross in the four fisheries estimated to have
taken the most captures between 2002/03 and 2010/11 (cumulatively, 82% of all white-capped albatross
captures). Data version v20121101.