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Table 7 Predictive accuracy of existing aboveground biomass models and models developed in this study

From: Above- and belowground tree biomass models for three mangrove species in Tanzania: a nonlinear mixed effects modelling approach

Species

Source

Model type

Predictor variables

n

RMSE (%)

MPEa (%)

AIC

A. marina

Chave et al. (2005)

Common

dbh, ht, ρ

40

41.5

−19.0b

425.8

Comley and McGuinness (2005)

Species-specific

dbh

40

45.7

−22.7c

429.6

Patil et al. (2014)

Species-specific

dbh

40

65.6

−36.8c

458.4

Komiyama et al. (2005)

Common

dbh, ρ

40

104.8

36.9a

498.0

Ray et al. (2011)

Common

dbh, ht

40

118.0

−62.7c

507.4

Kuei (2008))

Species-specific

dbh

40

132.4

−80.2c

514.7

Sitoe et al. (2014)

Common

dbh

40

151.2

−94.0c

525.3

Kairo et al. (2009)

Species-specific

dbh

40

157.3

−95.1c

528.4

This study

Common

dbh, ht

40

29.3

−1.6 NS

395.9

This study

Species-specific

dbh, ht

40

31.4

1.6 NS

401.6

This study

Common

dbh

40

40.6

1.6 NS

419.5

This study

Species-specific

dbh

40

41.3

2.8 NS

421.5

S. alba

Chave et al. (2005)

Common

dbh, ht, ρ

39

47.1

1.6 NS

383.9

Kauffman and Donato (2012)

Species-specific

dbh, ht, ρ

39

62.8

−40.4c

406.3

Komiyama et al. (2005)

Common

dbh, ρ

39

70.8

29.7b

413.7

Ray et al. (2011)

Common

dbh, ht

39

87.6

−45.9c

430.3

Sitoe et al. (2014)

Common

dbh

39

154.8

−94.0c

472.7

Kairo et al. (2009)

Specific

dbh

39

162.3

−98.9c

476.4

This study

Species-specific

dbh, ht

39

23.1

2.0 NS

326.4

This study

Species-specific

dbh

39

34.2

2.8 NS

355.0

This study

Common

dbh, ht

39

39.8

16.5b

368.1

This study

Common

dbh

39

40.5

11.4 NS

368.8

R. mucronata

Komiyama et al. (2005)

Common

dbh, ρ

40

56.9

29.4c

426.2

Chave et al. (2005)

Common

dbh, ht, ρ

40

72.3

−17.8 NS

447.4

Kauffman and Donato (2012)

Species-specific

dbh, ht, ρ

40

87.7

−46.0c

462.9

Ray et al. (2011)

Common

dbh, ht

40

109.9

−60.7c

478.9

Sitoe et al. (2014)

Common

dbh

40

150.2

−94.4c

501.9

Kairo et al. (2009)

Species-specific

dbh

40

154.2

−98.4c

504.0

This study

Species-specific

dbh

40

40.5

−6.6 NS

397.0

This study

Species-specific

dbh, ht

40

42.5

−4.6 NS

403.0

This study

Common

dbh

40

44.7

−12.7 NS

405.0

This study

Common

dbh, h

40

47.6

13.7 NS

412.0

  1. Existing models and models from this study are ranked separately and according to AIC in descending order
  2. NS not significant at 5 %, n sample sizes
  3. aTwo-tailed t-tests
  4. bSignificant at 5 %
  5. bSignificant at 1 %
  6. cSignificant at 0.1 %