South Asia

Tree density, basal area and species diversity in a disturbed dry tropicalforest of northern India: implications for conservation

Background

Dry tropical forest communities are among the world’s most threatened systems. Rapid measures are required to protect and restore them in degraded landscapes. For planning conservation strategies, there is a need to determine the essential measurable properties, such as number of species and basal area, that best describe the dry forest vegetation and its environment, and to document quantitative relationships among them.

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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

background

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.

Research Goals & Methods

The crown surface area, crown volume, and live crown ratio were measured as well as evaluated for their correlation with tree size classes and disturbance causes.

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The Ecophysiology of Pioneer Tree Species in Relation to their Disturbance Ecology in a Wet Lowland Rainforest, Sri Lanka

Background

This dissertation evaluates pioneers species and their response to light availability and disturbance characteristics 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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Experiments on Ecological Restoration of Coal Mine Spoil using Native Trees in a Dry Tropical Environment, India: A Synthesis

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This article outlines a series of experiments on the growth performance of 17 native tree species, as well the suitability of select species for use in plantations and to restore soil fertility on an abandoned coal mine in India. All 17 species grew in degraded mine soil, with A. catechu, B. racemosa, D. strictus, L. coromandelica and T. arjuna showing the highest biomass accumulation in mine soil; certain species showed higher biomass accumulation in mine soil fertilized with full or half doses of NPK.

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Restoration of a Sri-Lankan rainforest: Using Caribbean Pine Pinus caribaea as a nurse for establishing late-successional tree species

Background

In the moist tropics, studies have demonstrated poor seedling establishment of late-successional trees on lands cleared of forest. This study examines the potential for establishing late-successional tree species that dominate the canopy of rainforest by planting within and adjacent to experimental openings that were created within a Pinus caribaea plantation.

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Ecology of Tree Seed and Seedlings: Implications for Tropical Forest Conservation and Restoration

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This article reviews literature concerning germination and seedling growth pertinent to tropical forest conservation and restoration, examining the various processes and factors that seeds are exposed to.

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Role of Legumes in Release of Successionally Arrested Grasslands inthe Central Hills of Sri Lanka

Background

Many cleared and abandoned forest areas have changed to successionally arrested grasslands, shrublands, or fernlands maintained by frequent fires and high herbivore populations. Many studies have shown that herbaceous legumes can protect soil surfaces, retain soil moisture, improve soil fertility, and retard ground fires. This study evaluates whether some of these species can satisfactorily establish in these arrested grassland areas to aid in the trajectory towards reforestation. 

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Releasing Rain Forest Succession: A Case Study in the Dicranopteris linearis Fernlands of Sri Lanka

background

This study evaluates the effectiveness of different site treatments for controlling the invasive fern Dicranopteris linearis which has arrested forest succession in areas of the Sinharaja Man and Biosphere (MAB) reserve in lowland Sri Lanka. The fernlands, which had existed in the reserve for 10-20 years before this study, are favored by forest clearance for swidden agriculture and periodic fires. 

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Rainforest Restoration: A Guide to Principles and Practice

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This document provides an introduction to tropical forest restoration with applications and a detailed description of reforestation experiences in the Whestern Ghats of India.

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

background

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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