Germination of high Andean treeline species of contrasting environments and along elevational gradients in northwest Argentina

In mountain ecosystems, temperature and precipitation change along elevation and determine the lower and upper limits of tree species which form forests. Early life performance of tree species has been assessed along elevational gradients as a proxy for several environmental variables. Here, we atte...

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Autores principales: Cuyckens, Griet An Erica, Hensen, Isabell, Lopez, Victoria L., Cellini, Juan Manuel, Renison, Daniel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Agrarias
Polylepis
Puna
Yungas
Queñoa
Seed mass
Seed viability
Peso de semillas
Viabilidad
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/118801
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-118801
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Polylepis
Puna
Yungas
Queñoa
Seed mass
Seed viability
Peso de semillas
Viabilidad
spellingShingle Ciencias Agrarias
Polylepis
Puna
Yungas
Queñoa
Seed mass
Seed viability
Peso de semillas
Viabilidad
Cuyckens, Griet An Erica
Hensen, Isabell
Lopez, Victoria L.
Cellini, Juan Manuel
Renison, Daniel
Germination of high Andean treeline species of contrasting environments and along elevational gradients in northwest Argentina
topic_facet Ciencias Agrarias
Polylepis
Puna
Yungas
Queñoa
Seed mass
Seed viability
Peso de semillas
Viabilidad
description In mountain ecosystems, temperature and precipitation change along elevation and determine the lower and upper limits of tree species which form forests. Early life performance of tree species has been assessed along elevational gradients as a proxy for several environmental variables. Here, we attempt to answer the following question: How does elevation provenance influence seed mass, viability, and germination of Queñoa (Polylepis spp.)? We worked with four species from two contrasting environments from northwest Argentina. We gathered seeds along elevation gradients, seeds were weighed, tested for viability (Triphenyltetrazoliumchlorid; TTC) and germination percentage in a controlled environment. The analysis was performed using Generalized Linear Models (GLM). We found low germination percentages in all species, probably related to low seed viability. The two species from humid environments had lower seed mass and higher germination percentages than the two species from dry environments. The effect of elevational provenance negatively affected the germination of two species, while the other two species were not affected. We conclude that although the four species studied belong to the same genus, their early life characteristics differ between environments and along elevational gradients according to species. Trends regarding future temperatures suggest increases in germination for two of our study species and no effects on the other two species.
format Articulo
Articulo
author Cuyckens, Griet An Erica
Hensen, Isabell
Lopez, Victoria L.
Cellini, Juan Manuel
Renison, Daniel
author_facet Cuyckens, Griet An Erica
Hensen, Isabell
Lopez, Victoria L.
Cellini, Juan Manuel
Renison, Daniel
author_sort Cuyckens, Griet An Erica
title Germination of high Andean treeline species of contrasting environments and along elevational gradients in northwest Argentina
title_short Germination of high Andean treeline species of contrasting environments and along elevational gradients in northwest Argentina
title_full Germination of high Andean treeline species of contrasting environments and along elevational gradients in northwest Argentina
title_fullStr Germination of high Andean treeline species of contrasting environments and along elevational gradients in northwest Argentina
title_full_unstemmed Germination of high Andean treeline species of contrasting environments and along elevational gradients in northwest Argentina
title_sort germination of high andean treeline species of contrasting environments and along elevational gradients in northwest argentina
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/118801
work_keys_str_mv AT cuyckensgrietanerica germinationofhighandeantreelinespeciesofcontrastingenvironmentsandalongelevationalgradientsinnorthwestargentina
AT hensenisabell germinationofhighandeantreelinespeciesofcontrastingenvironmentsandalongelevationalgradientsinnorthwestargentina
AT lopezvictorial germinationofhighandeantreelinespeciesofcontrastingenvironmentsandalongelevationalgradientsinnorthwestargentina
AT cellinijuanmanuel germinationofhighandeantreelinespeciesofcontrastingenvironmentsandalongelevationalgradientsinnorthwestargentina
AT renisondaniel germinationofhighandeantreelinespeciesofcontrastingenvironmentsandalongelevationalgradientsinnorthwestargentina
bdutipo_str Repositorios
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