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Table 3 Comparison on regressions between OPC derived mass and directly measured mass, ranges of abudance, and biovolume of mesozooplankton

From: Spatial and temporal changes in zooplankton abundance, biovolume, and size spectra in the neighboring waters of Japan: analyses using an optical plankton counter

Location (period)

Regression ( n, r 2 , p )

Abundance (ind. m -3 )

Biovolume (mm 3  m -3 )

References

35° to 44° N, 155° E

Y = 1.05X + 0.05

351.7 to 579.5

177.1 to 678.9a

Yokoi et al. (2008)

(May to June 1993 to 2004)

(234, 0.63, p < 0.0001)

   

22° to 53° 30′ N 165° E/165° W

Y = 116X

226.3 to 430.9

190.7 to 523.3a

Matsuno and Yamaguchi (2010)

(June to August 2003 to 2006)

(96, 0.79, p < 0.0001)

   

35° to 51° N, 180°

Y = 1.176X

128.0 to 562.0

96.0 to 880.0a

Fukuda et al (2012)

(June 1981 to 2000)

(351, 0.521, p < 0.0001)

   

20° to 45° N, 126° to 155° E

Y = 0.950X

16.8 to 1,075.9

2.2 to 1,006.7

This study

(May to Aug. 2011)

(78, 0.691, p < 0.0001)

   
  1. Evaluated by OPC analyses in the North Pacific. For regressions, Y, biovolume in mm−3 and X, mg m−3.
  2. aBiovolume data were calculated from dry mass unit in the references.