Trait - density - microsite interactions indicate plastic and non - plastic germination strategies of co-occurring desert annual plants

Functional traits have been linked to relevant vital rates across co-occurring species, such as growth and survival. However, the relationship between plant traits and germination has been much less studied, despite that germination can be a key transition for plants. Building on evolutionary theory...

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Detalles Bibliográficos
Autor principal: Carmona Crocco, Julieta
Otros Autores: Rolhauser, Andrés Guillermo, Pucheta, Eduardo Raúl
Formato: Artículo
Lenguaje:Inglés
Materias:
DORMANCY
GERMINATION FRACTION
SEED BANK
TRAIT–GERMINATION RELATIONSHIP
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2020carmona.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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024 |a 10.1016/j.jaridenv.2020.104178 
040 |a AR-BaUFA  |c AR-BaUFA 
100 1 |9 72507  |a Carmona Crocco, Julieta  |u Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Biología. San Juan, Argentina. 
245 0 0 |a Trait - density - microsite interactions indicate plastic and non - plastic germination strategies of co-occurring desert annual plants 
520 |a Functional traits have been linked to relevant vital rates across co-occurring species, such as growth and survival. However, the relationship between plant traits and germination has been much less studied, despite that germination can be a key transition for plants. Building on evolutionary theory, we propose that variation in germination fraction across co-occurring desert annual plants may result from the interaction of post- germination plant traits, density dependence and microsite type. Our study system consisted of three summer annual species abundant in a desert in western Argentina, for which we quantified germination fractions in three microsite types: Larrea divaricata shrub, Bulnesia retama shrub, and open spaces among shrubs. Based on postgermination trait data (summarized by a principal component, PC1), the annual species can be arranged in terms of increasing stress-tolerance, from Amaranthus standleyanus, to Gomphrena martiana and Tribulus terrestris. We found an interaction between PC1 and density of conspecific seeds suggesting that the strength of plastic negative density-dependence decreased with the increase of plant stress-tolerance. Our results emphasize that both plastic and non-plastic (bet-hedging) mechanisms would contribute to shape germination dynamics across annual plants, and that plant traits can offer parsimonious explanations for such cross-species variation. 
650 |2 Agrovoc  |9 26 
653 |a DORMANCY 
653 |a GERMINATION FRACTION 
653 |a SEED BANK 
653 |a TRAIT–GERMINATION RELATIONSHIP 
700 1 |9 12512  |a Rolhauser, Andrés Guillermo  |u Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Biología. San Juan, Argentina.  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Buenos Aires, Argentina.  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
700 1 |9 58204  |a Pucheta, Eduardo Raúl  |u Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Biología. San Juan, Argentina. 
773 |t Journal of Arid Environments  |g Vol.179 (2020), art.104178, 6 p., tbls., grafs. 
856 |f 2020carmona  |i En reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2020carmona.pdf  |x ARTI202103 
856 |u https://www.elsevier.com/  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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