Enhancing tilapia polycultures through better farm scale integration in Bangladesh

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Linkages between the fish ponds and surrounding land for horticulture are a distinctive feature of farming households in Bangladesh. It was hypothesised that integration of fish ponds in integrated farming system enhances livelihoods and reduces poverty. The effects of introducing tilapia into existing integrated farming systems on the broader pond-dike system and associated livelihoods in […]

Fish farming and food security in Central Cameroon

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Over 5 years of participatory on-farm research, market access, profitability, farming systems productivity and economic sustainability were compared on 100 small-scale farms in Central Cameroon. Integration technology based on the use of agricultural by-products as fishpond inputs was the driver for intensification. Over all farms, fishpond productivity increased from 498 kg to 1609 kg fish/ha […]

The impact of native versus introduced livestock in the Chimborazo Faunal Production Reserve, Ecuador

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Ecuador’s Chimborazo Faunal Production Reserve is a protected area that encourages the use of indigenous domestication animals by local populations within its boundaries. Domesticated Llamas have lived in the Ecuadorian highlands for at least 1500 yearswhile remnant populations have survived in the region, Alpacas were extirpated by the introduction of European cattle horses, sheep and […]

Adaptions by Andean Camelids to tropical highland systems

World Region

Camelids are adapted to the Andean region; the “altitude sickness” that strikes many introduced species (such as cattle) does not affect them (Branchero et al., 1971, and Sillao et al., 1972, as quoted in JUNAC, 1990). They cause less damage to the grasslands since they bite off their forage (Wheeler, 1982, as quoted in JUNAC, […]

Genetic resources of Neuquen criollo goats in Patagonia

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Neuquén are small, hardy goats raised by small-scale herders in a transhumance system under cold, semi-arid conditions. Their area is contiguous with Chile which, until border closure, was a source of genetic exchange as well as a major market for goat products. Herder families are now settled while herds continue to migrate on their transhumance […]

Drought and grazing intensities affect state changes in Savannas

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Savannas are dynamic environments that are characterized by fluctuations in grass and woody plant biomass as a result of variable rainfall. Herbivores are often insufficient to regulate accumulation of grasses during wet periods, leading to periodic fire regimes that maintain savanna rangelands in open, grassy states. Changes from a grassy to woody state come about […]

Reduction in diversity lowers resilience of coral reef fisheries

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Threat

Overfishing of herbivores in the Caribbean has contributed to the expansion of sea urchin populations. Urchins still maintained the coral-dominated state as grazers by keeping invading algae populations in control. However, high densities of sea urchin populations exhibited low resilience, and were susceptible to disease outbreak that reduced their populations by two orders of magnitude, […]

High levels of genetic diversity in African poultry

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Threat

Chickens represent an important animal genetic resource for improving farmers’ income in Africa. A comparative analysis of the genetic diversity of 472 village chickens across a subset of African countries (Cameroon, Benin, Ghana, Cote d’Ivoire and Morocco, and characterization along 22 markers revealed high heterozygosity for all local populations (0.51 to 0.67) Human settlements, migrations […]

System of Rice Intensification increases output while reducing inputs

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The System of Rice Intensification (SRI) is becoming widely adopted in many African and Asian countries because, compared with standard rice management (SRM), it consistently achieves increases in output alongside reductions in inputs of seeds, agrochemicals, water, energy and labour. SRI uses specific crop and water management practices that favour aerobic soil environment, root growth […]

Rotations for sustainable production in Bedfordshire, UK

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The Colworth Farm Project in Bedfordshire, UK, is part of the Sustainable Agriculture Initiative of the consumer goods company Unilever. From 1999 to 2006, a 60-ha section of the farm was used as an experimental station. The aim of the project was to develop sustainable production systems for peas and oilseed rape within a six-year […]