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Table 6 Model selection for the relationship between seed production estimated with image quadrats (GQ) and the reference litter trap method (LT) for the sampled tree species. Month refers to the month of sampling. AIC and log likelihood were used to select the best models (in italics)

From: A comparison of ground-based count methods for quantifying seed production in temperate broadleaved tree species

Model

Vars. count model

Vars. zero model

AIC

LogLik

Pr(>Chisq)

ZIP

LT + species

LT + species

355.96

− 169.9814

2.72E-01

ZIP

LT

Species + month

361.91

− 174.9570

9.04E + 02

ZIP

LT* species

Species + month

350.49

− 165.2495

5.13E + 01

ZINB

LT

LT

324.84

− 157.4203

8.90E + 02

ZINB

LT + species

LT + species

308.01

− 145.0094

4.63E + 00

ZINB

LT

Species + month

302.31

− 144.1550

2.55E + 04

ZINB

LT* species

Species + month

302.17

− 140.0867

6.69E + 03

ZAP

LT

LT

377.45

− 184.7261

7.40E-11

ZAP

LT + species

LT + species

358.13

− 171.0651

7.11E + 00

ZAP

LT

Species + month

363.47

− 175.7358

3.66E + 02

ZAP

LT* species

Species + month

355.88

− 167.9446

6.34E + 02

ZANB

LT

LT

323.90

− 156.9507

2.64E + 01

ZANB

LT + species

LT + species

312.64

− 147.3223

9.97E + 01

ZANB

LT

Species + month

309.92

− 147.9603

2.83E + 04

ZANB

LT* species

Species + month

311.83

− 144.9187

9.30E + 04