Activity (year)

Abundance

Species Richness

Diversity

Evenness

Pre-Operation (1997-1999)

144 (18)

28 (1.5)

2.7 (0.15)

0.81 (0.05)

Operations

Open Space (2000-2002)

93 (41)

23 (5.5)

2.7 (0.17)

0.86 (0.040)

Foam Containment (2003-2006)

230 (152)

35 (8.7)

2.9 (0.13)

0.83 (0.053)

Vessel Containment (2007-2014)

165 (54)

37 (5.2)^*

3.2 (0.093)^*

0.83 (0.079)