Nurse Trees

Assisted Natural Regeneration: Methods, Results and Issues Relevant to Sustained Participation by Communities

Background

This article describes forest restoration in Kandis village on Palawan Island, Philippines, an  assisted natural regeneration (ANR) project, and focuses on the social issues that affect success of ANR projects.

research goals & methods

The ANR approached used includes fire prevention, ring-weeding, and flattening of grasses.

Open access copy available

Helping Forests to Help Themselves—Accelerating Natural Regeneration

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This chapter walks through the basic techniques of accelerated (or assisted) natural regeneration (ANR), describing when it is appropriate, when it should be combined with other techniques, how to increase the seed rain, and areas of needed research.

Open access copy available

Catalyzing native forest regeneration on degraded tropical lands

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Forest clearing, forest degradation, and the deterioration of land productivity due to inappropriate management is a major problem in the tropics. While traditionally, restoration of forest lands abandoned from human use has relied on natural forest regeneration, this paper explores the potential of plantations to catalyze forest regeneration in the tropics.

Open access copy available

Forest Regeneration in a Chronosequence of Tropical Abandoned Pastures: Implications for Restoration Ecology

Background

During the mid‐1900s, most of the island of Puerto Rico was deforested, but a shift in the economy from agriculture to small industry beginning in the 1950s resulted in the abandonment of agricultural lands and recovery of secondary forest. This research examines the natural regeneration patterns on these abandoned agricultural lands in four different regions of Puerto Rico.

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Native Trees and Shrubs for the Productive Rehabilitation of Tropical Cattleranching Lands

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The authors of this study examined strategies to improve cattle ranching in Colombia and Mexico through the use of intensive silvopastoral systems. Silvopastoral systems transform extensive cattle ranching with intensively managed systems with high densities of trees and shrubs to improve yields and environmental impacts.

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The Effect of a Teak (Tectona grandis) Plantation on the Establishment of Native Species in an Abandoned Pasture in Costa Rica

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This study compares native tree species recruitment in the understory of a 10-year-old teak plantation in premontane wet forest in Costa Rica to the native tree species recruitment on nearby abandoned agricultural land.

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Release from Root Competition Promotes Tree Seedling Survival and Growth Following Transplantation into Human-Induced Grasslands in Sri Lanka

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This study evaluates the growth and survival of four native tree species planted as seedlings in grasslands situated in previously abandoned tea plantations.

Research Goals & Methods

Each seedling underwent one of eight different treatments based the various combinations of: with or without root competition, shoot competition, and vertebrate herbivory. Seedlings that died within the first month were replaced. Growth and survival was evaluated at 18 and 28 months.

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Effects of fire on the recruitment of rain forest vegetation beneath Pinus caribaea plantations, Sri Lanka

Background

Groundstory fires burn forest understories and can impact advance regeneration, contributing to conversion of forests to fire-sustained grasslands or fernlands. While plantations of fire-tolerant trees have been successfully established on these sites, managing fire in the newly developing understory remains an issue of concern.

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Reforestation Experiences with Dipterocarp Species on Grassland

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Experimental Tree Assemblages on the Ecological Rehabilitation of a Cloud Forest in Veracruz, Mexico

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This research evaluates the survival of 10 native tree species planted in a heavily degraded montane forest in Veracruz, Mexico.

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