Efect of population density on the phenological development of individuals of annual plant species

Symonides, Ewa

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Efect of population density on the phenological development of individuals of annual plant species Symonides, Ewa

Efect of population density on the phenological development of individuals of annual plant species

Effect of population density on the phenological development of individuals of annual plant species ; Plant population density and development of individuals

Symonides, Ewa

Polska Akademia Nauk. Instytut Ekologii

Polish Scientific Publishers

Warszawa

1978

Pages 273-286 : illustrations ; 24 cm ; Bibliographical references (pages 285-286) ; Abstract in Polish

Journal/Article

psammophytes ; therophytes ; population density ; phenological development of annuals ; developmental rhythmicity of annuals ; duration of phenophases

During a six years' period the course of the life cycle was observed of five species of dune annuals at three different density levels. The studies have shown that: (1) the time of seedling emergence and the duration of the seedling phase depend primarily on the weather conditions; (2) after the seedling phase has been passed, an increase in density is accompanied by an acceleration of the developmental phases (until the flowering time) and shortening of the life cycle; (3) the shorter the growth cycle of a species the more marked is the effect of density on the phenological development of individuals.

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