Mast Fruiting Is a Frequent Strategy in Woody Species of Eastern South America

被引:58
|
作者
Norden, Natalia [1 ]
Chave, Jerome [1 ]
Belbenoit, Pierre [2 ]
Caubere, Adeline [2 ]
Chatelet, Patrick [3 ]
Forget, Pierre-Michel [2 ]
Thebaud, Christophe [1 ]
机构
[1] Univ Toulouse 3, Lab Evolut & Diversite Biol, CNRS, UMR 5174, F-31062 Toulouse, France
[2] CNRS MNHN, UMR 5176, Dept Ecol & Gest Biodiversite, Brunoy, France
[3] CNRS Guyane, UPS 2561, Stn Etud Nouragues, Cayenne, French Guiana
来源
PLOS ONE | 2007年 / 2卷 / 10期
关键词
D O I
10.1371/journal.pone.0001079
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Background. It is thought that mast seeding is a rare reproductive strategy in the tropics, since tropical climates are less variable, and fruit consumers tend to be more generalist in these regions. However, previous tests of this hypothesis were based on only few tropical datasets, and none from tropical South America. Moreover, reproductive strategies have been quantified based on the coefficient of variation of interannual seed production, an index that potentially confounds masting and high interannual variability in seed production. Methodology/Principal Findings. We developed a new approach to model the monthly variability in seed production for 28 tree species, and 20 liana species monitored during 5 years in a tropical forest of Central French Guiana. We found that 23% of the species showed a masting pattern, 54% an annual fruiting pattern, and 23% an irregular fruiting pattern. The majority of masting species were trees ( 8 out of 11), most of them animal-dispersed. The classification into reproductive strategies based on the coefficient of variation was inconsistent with our results in nearly half of the cases. Conclusions/Significance. Our study is the first to clearly evidence the frequency of the masting strategy in a tropical forest community of Eastern South America. The commonness of the masting strategy in tropical plants may promote species coexistence through storage dynamics.
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页数:9
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