Crop-Livestock Management in Slopeland areas of the Philippines

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In the Philippines, cropland makes up a third of the total land area – nearly 2/3s of the land area is upland and erosion prone. These croplands have been trditionally monocrops of rice, corn, sugarcane and coconut. Approximately 60% of the land is considered eroded and the country continues losing soil at the rate of […]

Planting trees for the sustainable management of marginal lands: the case of eucalyptus in Ethiopia

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In northern Ethiopia, eucalyptus is the most commonly observed tree species in community and household woodlots. In an environment suffering from biomass and water shortages, erosion and land degradation, fast growing and resilient eucalyptus perform better than most indigenous tree species. Smallholders show a clear preference for eucalyptus poles, which are useful for farm implements […]

Functional diversity in Mango Orchards on Reunion

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The knowledge of factors implicated in agroecosystem diversity is necessary to better evaluate their role. The study aims to link within-field plant diversity, cultural practices, and landscape context with terrestrial predatory arthropods in mango orchards on Reunion. Twenty-four plots distributed within the mango production area have been studied. Arthropods were sampled with pitfall traps. The […]

Productivity higher in species mixtures on tropical plantations

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At the La Selva Biological Station in Costa Rica, some species demonstrated signficantly faster growth in mixtures than as monocultures. For instance, Jacaranda copaia, Vochysia guatemalensis and Calophyllum brasiliense produced 21% more merchantable volume as a mixture than a sole monoculture of J. copaia, the fastest growing of the three species. Similarly, Dipteryx panamensis, Virola koschnyi and Terminalia amazonia mixtures demonstrated growth […]

Higher productivity in mixed-species forest plantations

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The vast majority of the world’s forest plantations are monocultures, many consisting of just a few common and widespread genera such as Eucalyptus, Pinus, Acacia, Tectona, Picea, Pseudotsuga, Swietenia, Gmelina the most important. There are potential advantages to using species mixtures rather than the more conventional monoculture approach in forest plantations, provided they are carefully designed […]

Diversified tree plantations less vulnerable to insect pests than monocultures

Interventions

While crop monocultures have been linked with pest outbreaks, less is known about the relationship between plantations and pests. Some have argued that pests in forest plantations are related more to age structure or silvicultural practices than stand composition. Furthermore, plantation forests grown in exotic species can be remarkably pest free, until colonized by introduced […]

Enhancing adaptive capacity of plantation forests

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Frost damage accounts for the 14% of mortality in reforestations in the Mexican western State of Michoacán.  Near Morelia, capital of the State of Michoacán, western México, the species occurs between 1600 m to 2450 m of altitude on the Neovolcanic Axis slopes, mixing with P. oocarpa at the lower limit of the altitudinal distribution […]

Silvics as a strategy to maintain and enhance adaptive capacity of forest trees

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Enhancing the adaptive capacity of natural and planted forests is important to decrease the vulnerability of those whose livelihoods depend on forest goods and services. Management for adaptation also helps to reinforce the role of tropical forests in climate change mitigation through sequestration, whereas large scale die-offs of poorly adapted forest trees could actually shift […]

Supporting adaptation by maintaining effective population sizes in agroforestry species

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In smallholder’s farms, evidence has suggested that effective population sizes are lower than they are in natural stands as a result of narrow sampling in seed collection, and ongoing reliance upon the same genetic material for future cultivation, as well as low individual densities, which reduces connectivity and associated pollination and seed dispersal. These effects […]

Germplasm Transfers of Agroforestry Trees for Climate Change Adaptation

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Prosopis africana  is very important for farming and pastoralist communities in the West African Sahel. The species extends from the relatively humid Sudanian and Guinean ecozones in the south to the drier Sahelian ecozone in the north, but it is disappearing in many regions due to overexploitation and the increasingly hotter and drier climate in the region. In the semi-arid West […]