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Seed Dispersal and Potential Forest Succession in Abandoned Agriculture in Tropical Africa

Background

Forest succession on disturbed and post-agrarian lands is often slow because the resources necessary for succession – such as soil nutrients, seeds, and moisture – are depleted. In such areas, succession may depend on bat- and bird-dispersed seeds arriving from distant forest patches.

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Evidence of Incipient Forest Transition in Southern Mexico

background

This study uses satelite images (Landsat) to analyze land cover change in southern Mexico from 1990 to 2006.

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Approaches to Classifying and Restoring Degraded Tropical Forests for the Anticipated REDD+ Climate Change Mitigation Mechanism

background

Forest degradation from logging and fires has impacted millions of acres of tropical forest around the globe, reducing the ability of these forests to provide ecosystem services, sequester carbon, and provide habitat to endangered species. This report focuses on the UN’s REDD + initiative (reducing emissions from deforestation and forest degradation) and calls for more attention to the potential for restoration initiatives of degraded forests to act as carbon sinks.

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Seeing the fruit for the trees in Borneo

Background

Lowland dipterocarp tropical rainforests reproduce during infrequent community-wide events known as ‘general flowering.’ These unpredictable cycles, thought to be influenced by El Niño cycles, are the primary reproductive driver across this forest type. During a time of rapid deforestation across the highly diverse, but highly sensitive, dipterocarp-dominated landscape of Borneo, capitalizing on general flowering is critical for seed collection for restoration efforts and for species preservation.

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Trees and regeneration in rubber agroforests and other forest-derived vegetation in Jambi (Sumatra, Indonesia)

background

Rubber agroforests (RAF) in Sumatra, introduced in the early 1900s, represent a managed forest type that is an intermediate ecosystem between natural forest and agricultural land. While understory vegetation and some trees are allowed to remain in RAF, as agriculturally managed forests, they may differ from unmanaged forests. This study compares forest regeneration in RAF and secondary forests.

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Seed inputs to microsite patch recovery on two tropandean landslides in Ecuador

Background

Regeneration of landslides is typically initiated by seed rain. This study reports on seed rain, seed pool, and plant cover on two Ecuadorian landslides.

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Responses of Transplanted Native Tree Species to Invasive Alien Grass Removals in an Abandoned Cattle Pasture in the Lacandon Region, Mexico

background

This study measures the response of 16 native tree species to manual invasive grass removal treatments, for cost-effective regeneration of tropical forest on abandoned cattle pasture in the Lacandon region of Chiapas, southeast Mexico.

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Impacts of Early- and Late-seral Mycorrhizae during Restoration in Seasonal Tropical Forest, Mexico

background

This study examines the degree to which arbuscular mycorrhizal fungi (AMF) are associated with early vs. late successional forests in Quintana Roo, Mexico. It considers how such fungi aid seedling growth of six native early-, mid- or late-successional tree species. The researchers hypothesize that the application of mycorrizae associated with a tree species' associated successional sere will better promote that species' seedling growth and that associated AMF are therefore key for forest restoration success in degraded or disturbed areas.

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Effect of Adult Density on Regeneration Success of Woody Plants in Natural and Restored Tropical Dry Evergreen Forest Fragments in Puducherry Region, India

Background

This study tested variables contributing to successful regeneration of Tropical Dry Evergreen Forest (TDEF) species in southern India, a forest type that is highly biodiverse but fragmented and commonly designated as “sacred groves”.

Conclusions & Takeaways

The researchers found that whether in longstanding “groves” or in reforested areas, adult tree density more strongly enhances the regeneration of any given species than do other factors such as the species’ dispersal mode or life form (e.g. tree, shrub, or liana).

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Smallholder plantations in the tropics – local people between outgrower schemes and reforestation programmes

Background

As part of a book on plantation forestry, this chapter focuses on smallholders and plantation forestry. The authors combine studies from Asia, Africa, and South America with their own experience and data from Brazil. The authors outline the different systems of plantation forestry for smallholders including those initiated by commericial entities such as outgrower schemes. Governments and non-profits inititate programs for ecosystem services or income generation through agroforestry. They also emphasize that smallholders intitiate their own efforts of production forests, agroforestry systems, and homegardens.

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