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Abstract Detail


Londono, Viviana [1], Madriñán, Santiago [1], Torres, Alba  [2].

The role of functional traits on seed germination niche hypothesis.

Many hypothesis have been made to understand the patterns of diversity and dominance of tropical dry forests, one of the most important lowland ecosystems and with the highest risk of loss in the Neotropics. One of the most interesting of these hypothesis is the germination niche hypothesis proposed by Vargas et al. 2015, in which the success of Legumes in the tropical dry forest is proposed to be due to its fastest germination compared with other families. To test this hypothesis and to know the role of the functional characters of the seeds of the tropical dry forest species in this hypothesis, seeds of 60 species of trees and lianas native of the tropical dry forest of the Colombian Caribbean were collected. The germination of the seeds was tested in field and laboratory under different light qualities comparing Legumes and non-Legumes species. In addition, the volume, mass and moisture content of the seed was measured as functional traits. A PCA corrected by the phylogeny was made. The main characteristics of tropical dry forest seeds are described. The germination niche hypothesis was corroborated and the grouping of the species were corroborated by their taxonomy rather than by their traits. The main characteristics of the ecology of tropical dry forest seeds of the Colombian Caribbean are described.

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1 - Universidad de los Andes, Ciencias Biológicas, Cra. 1 # 18a-12, Calle 5A#25A-67 Apto. 402, Bogotá, Bogotá DC., 111711, Colombia
2 - Universidad del Valle, Ciencias Biología, Calle 13 # 100-00, Cali, VAC, 76001, Colombia

Seed ecology
Germination Niche hypothesis
Seed functional traits
Tropical dry forest.

Presentation Type: Oral Paper
Session: 14, Ecology Section - Reproductive Biology
Location: 106/Mayo Civic Center
Date: Monday, July 23rd, 2018
Time: 1:30 PM
Number: 14001
Abstract ID:127
Candidate for Awards:Ecological Section Best Graduate Student Paper

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