Ecological Archives E090-096-A1

K. M. Holbrook and B. A. Loiselle. 2009. Dispersal in a Neotropical tree, Virola flexuosa (Myristicaceae): Does hunting of large vertebrates limit seed removal? Ecology 90:1449–1455.

Appendix A (Table A1). Summary of Virola flexuosa traits for all study trees including site comparisons.

 

TBS/YRS (13)

TBS (9)

YRS (4)

Independent t test†

DBH (cm)

56.5 ± 2.3

55.6 ± 3.0

58.4 ± 3.9

-0.546NS

Crop size‡
(No. fruits)

14,408 ± 4009

15,671 ± 5101

11,881 ± 7018

0.437NS

Crown area§ (m2)

155.8 ± 22.0

130.6 ± 18.4

206.1 ± 51.2

-1.726NS

   Notes: TBS, Tiputini Biodiversity Station; YRS, Yasuní Research Station; DBH, diameter at breast height. Mean ± SE are given for all data with sample size in parentheses. Seed measurements were: length (mm) 15.04 ± 0.81 (n = 116), width (mm) 11.77 ± 1.08 (n = 116), seed mass (g) 1.07 ± 0.16 (n = 99), aril mass (g) 0.58 ± 0.18 (n = 72), and aril:seed ratio 0.58 ± 0.12 (n = 72); seed statistics are from seeds collected at TBS only, therefore comparisons between sites were not possible.

† Results of independent t test (df = 11) for between-site differences; NS not significant.

‡ Because Virola capsules are not ingested, they provided an adequate estimation of fruit production and seed removal; seeds consumed and defecated or regurgitated intact were identified by the lack of an aril while fallen seeds that maintained their aril were not considered the result of a dispersal event.

§ Area = πr2, where r is the average of 8 radial (every 45°) measurements from tree center to anopy edge.


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