Impacts of Disturbance

The role of land-use history in driving successional pathways and its implications for the restoration of tropical forests

Background

Across tropical landscapes, large portions of forest have been removed or degraded. Regenerating or secondary forests are becoming increasingly valuable to maintaining and restoring the biodiversity and ecosystem services in the tropics. However, it is apparent that succession does not always happen at the same rate or in the same patterns/quality. It is thought that the history of the land and its usage heavily impact the regeneration patterns of a forest landscape.

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The association between rainforest disturbance and recovery, tree community composition, and community traits in the Yangambi area in the Democratic Republic of the Congo

Background

Forests in the Congo Basin are becoming increasingly threatened by human disturbances. These forests play a crucial role in global biodiversity, though understanding the full impact of forest degradation has been difficult due to the intact canopy cover. It is important to assess the extent that human activities have impacted these forests to make decisions on the forests’ conservation and management practices.

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The Effects of Prescribed Dry Season Burning on Woody Species Composition, Mole National Park, Ghana

Background

Savannas are valuable ecological communities that support many species and are known to be heavily shaped by fire disturbances. Fire is a recognized tool for controlling excess fuel and improving habitat. However, it is thought that the timing and frequency of fire prescriptions may impact characteristics of savanna growth and composition.

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Drought reduces the growth and health of tropical rainforest understory plants

Background

Plant responses to drought are important to understand for agricultural practices and environmental stress. Susceptibility to drought varies among and between plant species. Most field studies on plant responses to drought in tropical rainforests ignore understory plant species such as saplings and shrubs. These species are important to understand because they are often more vulnerable to environmental stressors, and they contribute greatly to forest biodiversity.

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Linking disturbance history to current forest structure to assess the impact of disturbances in tropical dry forests

Background

Tropical dry forests are given less attention in studies compared to tropical humid forests, but they still experience high levels of disturbance, both natural and human-made. These disturbances heavily alter the characteristics of valuable remaining forest structures. There are gaps in knowledge about how the timing and type of disturbance affects forest structure in seasonally dry tropical forests.

Open access copy available

Out of steady state: Tracking canopy gap dynamics across Brazilian Amazon

Background

Canopy gaps are a regular characteristic of natural or anthropogenic disturbance in forested landscapes. Gap-creating disturbances often result in a forest mosaic with patches of varying successional stages. Many species in tropical forests depend on these canopy gaps for regeneration. Field monitoring of canopy gaps can be difficult due to time constraints and plot size, making tropical gap dynamics an understudied topic.

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Legacy effects of canopy gaps on liana abundance 25 years later in a seasonal tropical evergreen forest in northeastern Thailand

Background

Lianas or woody vine species are abundant in tropical forests. They depend on trees for stability to grow and climb to the canopy. While lianas depend on trees for growth, they also require canopy gaps at early growing stages to satisfy their high demand for sunlight. At times, lianas occupy new treefall gaps densely enough to prevent tree regeneration. Tree host ability may influence the abundance of lianas in Southeast Asian seasonally dry tropical forests.

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Carbon-focused conservation may fail to protect the most biodiverse tropical forests

Introduction

The authors examine the relationship between carbon and biodiversity at the landscape-level across four gradients of disturbances and offer insight on optimizing carbon conservation projects with biodiversity conservation.

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Anthropogenic disturbance in tropical forests can double biodiversity loss from deforestation

Background

The authors examined the impacts of anthropogenic disturbances within a forest on the ability of the forest to conserve biodiversity and provide ecosytem services. The research used large data sets of plants, birds, and dung beetles and used them as indicators of biodiversity change in the forest.

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Floristic composition, structure and natural regeneration in a moist semideciduous forest following anthropogenic disturbances and plant invasion

Background

This research examined the floristic composition, struture and natural regeneration in three different forests: undisturbed (UF), disturbed-invaded (DIF) and disturbed (DF) within a forest reserve in Ghana.

Open access copy available
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