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Seed Dispersal and Germination of Enterolobium cyclocarpum (Jacq.) Griseb. (Leguminosae: Mimosoideae): Are Megafauna Necessary?

J. Robert Hunter
Journal of Biogeography
Vol. 16, No. 4 (Jul., 1989), pp. 369-378
Published by: Wiley
DOI: 10.2307/2845228
Stable URL: http://www.jstor.org/stable/2845228
Page Count: 10
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Seed Dispersal and Germination of Enterolobium cyclocarpum (Jacq.) Griseb. (Leguminosae: Mimosoideae): Are Megafauna Necessary?
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Abstract

Experiments with seeds of the guanacaste tree, E. cyclocarpum (Jacq.) Griseb., indicate that scarification of the seed testa may be more beneficial than heat treatments in stimulating rapid germination but that a humid environment and warm tropical temperatures are completely adequate for this process. Based on these data, the possibility that megafauna served and presently serve as principal agents of seed dispersal is questioned. Dissemination by water (hydrochory) is suggested as an alternate strategy.

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