Seasonal Tropical Wet, Moist, and Monsoonal Forest

Regeneration Status and Role of Traditional Ecological Knowledge for Cloud Forest Ecosystem Restoration in Ecuador

Background

Forests are a crucial component of global biodiversity. Ecuador has a long history of deforestation and forest degradation. Historical contexts such as colonization and governmental initiatives have shaped and will continue to shape the way people and forests interact. Emerging evidence supports the integration of traditional ecological knowledge (TEK) into ecological restoration practices in order to more effectively manage natural resources while incorporating the needs of local communities. The authors use this study to evaluate human disturbance impacts on cloud forest species and what TEK in the area can provide to aid in restoration.

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Pollinator recognition by a keystone tropical plant

Background

The evolution of flowering plants is complex and has resulted in a great amount of diversity in species both genetically and structurally. Pollination is the key to providing this variability and is responsible for evolutionary patterns and trends in flowering plant species. Some flowering plants are generalists, allowing for many types of pollinators to visit, while others are highly specified. The mechanism for this specialization is not well understood.

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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.

Open access copy available

Edaphic factors and initial conditions influence successional trajectories of early regenerating tropical dry forests

Background

Edaphic factors include soil characteristics and topography of a landscape. These factors are thought to have strong impacts on forest communities and can predict the trajectory of forest regeneration. Differing soil conditions and slopes result in varying species assemblages, growth rates, and overall tree cover.

Open access copy available

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.

Open access copy available

Suppression of seed production as a long-term strategy in weed biological control: The combined impact of two biocontrol agents on Acacia mearnsii in South Africa

Background

Acacia mearnsii is a woody plant native to Southeastern Australia and Tasmania. Introduced into South Africa in the mid-1800s for timber, the species has become invasive to the region. Reducing the amount of precipitation reaching the ground, hindering agriculture and lowering biodiversity are just a few of the detrimental impacts. Though there has been pushback to controlling this species for commercial interests, two biological control agents, a seed-feeding weevil and a flower-galling midge are known to control species spread and are introduced to the region.

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Seed removal, seed dispersers, and the allocation of tissues in Myrtaceae seeds

Background

Plants allocate resources to protective seed tissues in order to avoid seed death and ensure successful reproduction. Myrtaceae is an abundant plant family in the Brazilian Atlantic forest with many species producing fleshy fruits that are attractive to birds, rodents, and other mammals. Myrtaceae species may adapt seed characteristics to avoid predation.

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Forest structure predicts species richness and functional diversity in Amazonian mixed-species bird flocks

Background

Secondary forests between forest fragments are valuable sources of biodiversity during the regeneration process. In the Brazilian Amazon, understory birds are often an indicator of forest regeneration and overall health. Functional diversity is an important component of ecosystem health and services, yet little is known about the role it plays in the return of mixed-species bird flocks.

Open access copy available

Old timber plantations and secondary forests attain levels of plant diversity and structure similar to primary forests in the West African humid tropics

Background

There is a high rate of biodiversity loss and deforestation in tropical ecosystems. In order to maintain global biodiversity, it is necessary to conserve plant diversity in alternative forest landscapes such as secondary forests and plantations. Comparing conservation values and tradeoffs of different forest landscapes is important for sustainable forest management and conservation practices.

Open access copy available

Overcoming biotic homogenization in ecological restoration

Background

Regional, or gamma, diversity is often lower in restored landscapes compared to reference landscapes due to the selection of few desirable species for planting. Lowered diversity in restored landscapes is leading to overall biotic homogenization which puts ecosystems and humans in a more vulnerable position for adapting to environmental changes.

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