Heliocarpus donnell-smithii

Patterns of Seed Longevity and Germination in the Tropical Rainforest


This article reviews the factors that affect seed longevity and germination in tropical trees by providing an introduction to literature on the subject.

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Woody Plant Diversity and Structure of Shade-Grown-Coffee Plantations in Northern Chiapas, Mexico


This article presents research on coffee stand structure and diversity, with data collected from 61 coffee plots in Chiapas, Mexico.

Research Goals & Methods

The following variables were measured: coffee density, slope, plot aspect, the number of individuals of each shade species (divided into 9 diametric classes), number of strata, species use, and presence of woody plant species.

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