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Does masting result in frugivore satiation? A test with Manilkara trees in French Guiana

Published online by Cambridge University Press:  27 August 2015

Irene Mendoza ,
Gabrielle Martin ,
Adeline Caubère ,
Patrick Châtelet ,
Isabelle Hardy ,
Sylvie Jouard  and
Pierre-Michel Forget
Irene Mendoza
Affiliation:
UMR 7179 CNRS-MNHN, Muséum National d'Histoire Naturelle, Département d’Écologie et Gestion de la Biodiversité, 1 Av. du Petit Château, 91800 Brunoy, France Departamento de Botânica, Plant Phenology and Seed Dispersal Research Group, Universidade Estadual Paulista (UNESP), Avenida 24-A no. 1515 – CEP 13506–900, Rio Claro (São Paulo), Brazil
Gabrielle Martin
Affiliation:
UMR 7179 CNRS-MNHN, Muséum National d'Histoire Naturelle, Département d’Écologie et Gestion de la Biodiversité, 1 Av. du Petit Château, 91800 Brunoy, France
Adeline Caubère
Affiliation:
UMR 7179 CNRS-MNHN, Muséum National d'Histoire Naturelle, Département d’Écologie et Gestion de la Biodiversité, 1 Av. du Petit Château, 91800 Brunoy, France
Patrick Châtelet
Affiliation:
CNRS Guyane - USR 3456, 2 rue Gustave Charlery, 97300, Cayenne, French Guiana
Isabelle Hardy
Affiliation:
UMR 7179 CNRS-MNHN, Muséum National d'Histoire Naturelle, Département d’Écologie et Gestion de la Biodiversité, 1 Av. du Petit Château, 91800 Brunoy, France
Sylvie Jouard
Affiliation:
UMR 7179 CNRS-MNHN, Muséum National d'Histoire Naturelle, Département d’Écologie et Gestion de la Biodiversité, 1 Av. du Petit Château, 91800 Brunoy, France
Pierre-Michel Forget*
Affiliation:
UMR 7179 CNRS-MNHN, Muséum National d'Histoire Naturelle, Département d’Écologie et Gestion de la Biodiversité, 1 Av. du Petit Château, 91800 Brunoy, France
*
2 Corresponding author. Email: [email protected]
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Abstract:

Species showing mast seeding synchronously produce large amounts of fruits during some scattered years. This massive crop has been hypothesized to improve dispersal effectiveness by a satiation of seed predators, but the consequences for seed dispersers have barely been studied in the tropics. We tested the hypothesis that masting resulted in satiation of frugivorous dispersers using the study case of two Manilkara species growing in an Amazonian forest in French Guiana. Seed dispersal was estimated by means of seed traps in two forest types during a 10-y monitoring. Manilkara huberi and M. bidentata showed three fruiting events in a time span of 10 y (in 2001, 2006 and 2010). Estimates of seed dispersal from 2001 and 2010 showed that satiation of frugivores only occurred in the year with the largest crop of Manilkara (2010) and in the habitat where the diversity of primate-dispersed species retrieved in seed traps was the highest (Grand Plateau, with clay soils), while fruit consumers did not seem to be satiated in other instances. Spatio-temporal variability of seed production and the community-crop context are therefore affecting satiation of frugivores during masting events.

Keywords

frugivorymass fruitingManilkara huberiManilkara bidentataprimatespredator satiation hypothesisseed dispersalspatio-temporal variation
Type
Short Communication
Information
Journal of Tropical Ecology , Volume 31 , Issue 6 , November 2015 , pp. 553 - 556
Copyright
Copyright © Cambridge University Press 2015 

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Footnotes

1

Contributed equally

References

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