Variation of seed dispersal spectrum of woody plants across a rainfall gradient in north-eastern Brazil

被引：45

作者：

Tabarelli, M ^{[1
]}

Vicente, A ^{[1
]}

Barbosa, DCA ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Bot, BR-50670091 Recife, PE, Brazil

来源：

JOURNAL OF ARID ENVIRONMENTS | 2003年 / 53卷 / 02期

关键词：

D O I：

10.1006/jare.2002.1038

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

This study tests the hypothesis that the percentage of tree and shrub species within categories of seed dispersal, fruit size and type is directly related to rainfall in the caatinga vegetation, a tropical dry forest of the north-eastern Brazil. The percentage of vertebrate-dispersed species ranged from 11% in a 246-mm year(-1) plot to 53.6% in a 663-mm year(-1) plot, In addition, the percentage of berry species was positively correlated with annual rainfall, whereas the percentage of drupe species was negatively correlated. Among the group of vertebrate-dispersed species, a significant increase was found in the percentage of Myrtaceae species (0-16.7%) from dry to moist plots. Our results support trends described in the literature reporting gradual and predictable changes in seed dispersal mode in neotropical forests located across rainfall gradients. (C) 2002 Elsevier Science Ltd.

引用

页码：197 / 210

页数：14

共 36 条

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