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Seed Dispersal Distances and Plant Migration Potential in Tropical East Asia

Background

Most predictions of vegetation responses to anthropogenic climate change over the next century are based on plant physiological tolerances and do not account for the ability of plant species to migrate over the distances required in the time available, or the impact of habitat fragmentation on this ability. This review assesses the maximum routine dispersal distances achievable in tropical East Asia and their vulnerability to human impacts.

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Carbon sequestration in tropical agroforestry systems

Background

Agricultural lands are considered to be a major potential carbon sink, especially if trees are re-integrated with crops and/or animal agriculture. However, agroforestry systems are very diverse and are frequently used in small-scale settings, presenting challenges to carbon sequestration estimates.

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Performance of an Improved Fallow System in the Peruvian Amazon—Modelling Approach

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This research compares the ecological and economic potential of an improved leguminous tree fallow (using Inga edulis) to the traditional grass fallow (dominated by Imperata brasiliensis) in central Peru.

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Impacts of Native Trees on Tropical Soils: A Study in the Atlantic Lowlands of Costa Rica

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This article describes the results of a study in Costa Rica that compared the soil fertility in a 2.5 year-old plantation of 6 native tree species, grass pasture, and 20 year-old secondary forest.

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Coffee yields and soil nutrients under the shades of Inga sp. vs. multiple species in Chiapas, Mexico

Background

The type of canopy structure that provides shade to shade-grown coffee may make a difference in production. While Mexican coffee producers have often sought to replace a natural diverse canopy with Inga latibracteata alone, the benefits of either method for yield and for ease of management have not been adequately studied.

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Effects of Inga densiflora on the Microclimate of Coffee (Coffea arabica L.) and Overall Biomass under Optimal Growing Conditions in Costa Rica

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This article compares a coffee agroforestry system shaded with Inga densiflora to a coffee monoculture in optimal coffee growing conditions in Costa Rica. The two systems were investigated to determine differences in microclimate, coffee yield, and vegetative development of the coffee plants.

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Ecological Interactions, Management Lessons and Design Tools in Tropical Agroforestry Systems

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This article discusses efforts to model and predict the outcomes of competition between tree and crop species in agroforestry systems. It provides an overview of the positive and negative effects of intra- and inter-specific competition and describes narious methods for quantifying the net effects of tree-crop interactions.

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Tree biodiversity in farmer cooperatives of a shade coffee landscape in western El Salvador

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Conservation of tropical biodiversity in agricultural landscapes has become more important as the area covered by natural ecosystems decreases. Understanding the types of biodiversity common in agriculturally managed lands, and involving farmers in conservation planning, is important for regional conservation goals.

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Coffee Agroforestry Systems in Central America: II. Development of a Simple Process-Based Model and Preliminary Results

Background

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Shade management in coffee and cacao plantations

Background

Shade trees reduce the stress of coffee (Coffea spp.) and cacao (Theobroma cacao) by ameliorating adverse climatic conditions and nutritional imbalances and increase the biodiversity of coffee farms, but they may also compete for growth resources. This review summarizes the literature on ecological aspects of shade-grown coffee and cacao and on management of shade trees, but does not address economic and social aspects of shade-grown coffee and cacao.

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Arboles de Centroamerica: un Manual para Extensionistas (Trees of Central America: a Manual for Extentionists)

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Antecedentes

Los agricultores de Centro América afrontan una compleja realidad que usualmente no es considerada en las iniciativas de manejo sostenible, lo que repercute en la falta de éxito de estas. En un esfuerzo por insertar las necesidades reales de los agricultores a estas actividades, este manual busca cubrir la brecha de información relacionada a especies arbóreas nativas de América Central.

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Ecological Significance of Crown Functional Traits Across Size Classes and Disturbance Environments in Eight Pioneer Species in a Sri Lankan Rain Forest

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This article evaluates the tree crown characteristics of eight pioneer tree species in the Shorea-Mesua vegetation type (an aseasonal, mixed dipterocarp forest) around the Sinharaja World Heritage Forest Reserve in southwest Sri Lanka.

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Rehabilitation of Degraded Tropical Forest Lands

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This article discusses the options for the rehabilitation of degraded land on high rainfall areas. It suggests that it is both environmentally and economically disadvantageous to let the degraded land remain in an unproductive and rapidly eroding state.

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High Diversity Forest Restoration in Degraded Areas: Methods and Projects in Brazil

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This book addresses different approaches to the restoration of degraded, high diversity tropical and subtropical forests, including methods and empirical results.

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A Review of the Agroforestry Systems of Costa Rica

Background

This literature review provides a historical overview of agroforestry systems in Costa Rica from the 1970s to the present.

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A Survey of Small-Scale Farmers Using Trees in Pastures in Herrera Province, Panama

background

The Herrera Province on the Azuero Peninsula of Panamá has experienced significant deforestation for the purpose of cattle ranching.

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Contextual Analysis of Agroforestry Adoption in the Buffer Zone of Podocarpus National Park, Ecuador

Background

Promoting sustainable agriculture and community development has been an important strategy both to alleviate resource pressures on Ecuador’s Podocarpus National Park (PNP) and surrounding forested areas in its buffer zone, and to aid local communities. However, many contextual factors drive neighboring rural and agricultural communities to put pressure on PNP and the surrounding landscape.

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Contribution to the Restoration of Mixed Forests in Central Vietnam

Background

This article examines reforestation approaches for degraded forests in Central Vietnam and explores a forest management plan in Phong My.

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Indigenous Woody Species Diversity in Eucalyptus globulus Labill spp. globulus Plantations in the Ethiopian Highlands

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This study evaluates the regeneration of native woody species in eucalyptus plantations in the central highlands of Ethiopia.

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Restoration of a Coastal Swamp Forest in Southeast Brazil

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This study evaluates the potential for nine native tree and shrub species for use in the revegetation of degraded swamps in Rio de Janeiro, Brazil.

Research Goals & Methods

Invasive grasses and other vegetation, including the exotic tree Casuarina equisetifolia were removed from the site.

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