MEDITERRANEAN PASTURE DYNAMICS - THE ROLE OF GERMINATION

被引：77

作者：

ESPIGARES, T

PECO, B

机构：

[1] Departamento Interuniversitarlo de Ecología, Universidad Autónoma de Madrid, Madrid, 28049, Cantoblanco

来源：

JOURNAL OF VEGETATION SCIENCE | 1993年 / 4卷 / 02期

关键词：

AUTUMN RAIN; GRADIENT; PHYTOTRON; SEED BANK; TEMPERATURE; WEATHER FLUCTUATION;

D O I：

10.2307/3236104

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Meteorological patterns have a decisive influence on the inter-annual dynamics of therophyte pastures under Mediterranean climatic conditions. The germination behaviour of annual pasture species was studied by subjecting two collections of seeds taken from plants and soil-seed banks to two phytotron-simulated weather patterns: early and late autumn rains. Species from these pastures were arranged along a gradient of sensitivity to temperature on the arrival of the first persistent rain. This sensitivity was manifested in both the total germination success of the species and the germination time profile. The different germination patterns of the species can provide competitive advantages depending on the autumn weather conditions.

引用

页码：189 / 194

页数：6

共 38 条

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