Table 1 Acoustic fishes biomass estimates.

From: Large mesopelagic fishes biomass and trophic efficiency in the open ocean

s A estimate

Acoustic fishes biomass estimates

 

Total s A

Average

Median

75%

25%

Max

Min

  

−34.6 db kg−1

−30.8 db kg−1

−28.4 db kg−1

−42.2 db kg−1

−26.8 db kg−1

−46.8 db kg−1

OLS: sA=2384.4* ln(PP)—11678

4.24E+17

28,363

11,824

6,804

163,215

4,707

470,717

OLS: ln (sA)=1.52* ln (PP)—1.36

4.70E+17

31,449

13,110

7,544

180,972

5,219

521,930

GWR: ln (sA)=1.36* ln (PP)—0.2

5.57E+17

37,264

15,534

8,939

214,433

6,184

618,432

GWR different equations for PP above and below 400*

4.38E+17

29,321

12,223

7,034

168,725

4,866

486,607

Cruise average sAxocean surface deeper 1,000 m

4.14E+17

27,427

11,433

6,579

157,826

4,552

455,176

  1. GWR, geographically weighted regression; OLS, ordinary least squares regression. Total backscatter between 40° N and 40° S estimated from PP (total sA) and different acoustic to weight (db kg−1) ratios (see Table 2).
  2. *See Supplementary Table 1 for details on the GWR equation parameters above and below 400 mg C m−2 d−1.
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