Pinto Abalone (Haliotis kamtschatkana)

Supporting figures and tables for the IUCN Red List assessment

Figures

Figure 1: Map of Pinto Abalone distribution. The black shading represents the core distribution and the hatched area represents the anecdotal range based on information gathered in the study (base map adapted from Bodkin et al. 2001).

THE IUCN RED LIST OF THREATENED SPECIES™

C P U E

( k g

p e r

d i v Catch (mt) e r * d a y )

Year

Figure 2: Catch (metric tons) and catch per unit effort (kg per diver day) for the 929 Alaskan abalone fishery. Bars represent catch and line represents catch per unit effort (source Woodby et al. 2000).

C P U E

( k g

p e r

d i v Catch (mt) e r * h o u r )

Year

Figure 3: Catch (metric tons) and catch per unit effort in (kg per diver hour) for the British Columbia pinto abalone fishery. The bars represent catch and the line represents catch per unit effort (source Campbell 1997).

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3.0 A 2.5

2.0 Fishery closed

1.5 ) 2 1.0

ls / m 0.5 a

0.0

ividu 3.0 B nd i 2.5 Fishery closed 2.0

1.5 DENSITY ( 1.0

0.5

0.0 1975 1980 1985 1990 1995 2000 2005

YEAR Figure 4: Densities at site index surveys from (A) 11 comparable sites in the central coast of British Columbia (adapted from Campbell et al. 1998) and (B) 11 comparable sites in the Southeast Queen Charlotte Islands (adapted from Campbell et al. 2000). Symbols: (●) all individuals, (○) legal-sized individuals (>100 mm). Symbols with central cross are from unpublished surveys (J. Lessard, pers. comm).

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A

B

Figure 5: Sea otter distribution for A historic times and B current times (adapted from Estes et al. 2001).

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Tables

Table 1: Pinto abalone densities from index sites located in the northern part of the state of Washington (source NMFS 2004).

Index Site 1992 1994 1996

Cypress Island 0.15 0.06 0.03

Deadman's Bay 0.12 0.13 0.16

Long Island East 0.04 0.07 0.08

Long Island West 0.31 0.28 0.23

Old Eagle Point 0.09 0.13 0.06 Parker Reef 0.12 0.05 0.05

Ripple Island 0.3 0.25 0.17

Spieden Island 0.26 0.09 0.16

Williamson Rocks 0.08 0.13 0.12

Average densities 0.16 0.13 0.12

Table 2: Regressions, associated test statistics and percentage declines for CPUE data in the Alaskan (source Woodby et al. 2000) and British Columbian (source: Campbell 1997) abalone fisheries. Regressions were performed using SYSTAT 10®.

Fishery Regression equation R2 P % Decline Alaska (1979 – 1995) CPUE = (-30.686) YEAR + 61274.804 0.868 <0.001 89.7 BC (1977 – 1990) CPUE = (-1.189) YEAR + 2387.974 0.773 <0.001 41.4

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