The Wa people constitute a long-dwelling ethnic group mainly in southwestern Yunnan with a unique culture and rich knowledge of traditional vegetables. Homegardens are in situ conservation sources of germplasm diversity for overcoming homogenous germplasm problems in industrial agricultural systems. However, farmers can benefit from enhancing features containing diverse plant species that support non-bee and bee species proven to deliver measurable crop pollination services. The native bee Lasioglossum sordidum delivered more pollination at garden and native-planting features than at other features, drone flies (Eristalis tenax) contributed the majority of pollination service at effluent-ponds and bare fence-lines, while calliphorid flies contributed most pollination at conifer hedgerows.Ĭonclusions: Conversion of functional features to bare fence-lines negatively affects on-farm pollinator diversity and its service to crop plants. Taxa delivering the service also differed across features. Results: Pollinators at gardens, native-plantings, and effluent-ponds delivered significantly more pollination service than at bare fence-lines, with flies being more effective pollinators than bees at all features assessed. We also measured pollination service delivery to potted pak choi (Brassica rapa) plots near features 1-5 on six farms. Methods: Using window traps in a highly simplified agroecosystem, we surveyed pollinator abundances and diversity associated with: 1) bare fence-lines separating pastures (control), 2) conifer hedgerows 3) farm gardens of diverse exotic plant species 4) effluent-ponds, 5) newly established native-plantings, 6) gorse (Ulex europaeus) hedgerows and 7) open water channels across six to twelve dairy farms. Objectives: Here, we studied whether different pollinator groups based on life-history are differentially associated to landscape features, and how this affects crop pollination service delivery. Changes in functional features in simplified agroecosystems may impact the abundance of wild pollinators.
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Migrants, upon their return bring new ideas and plants that might transform the rural landscape.Ĭontext: Landscape simplification is a main driver of insect decline, threatening crop pollination services.
For economic reasons, the inhabitants of Candelaria Loxicha are increasingly engaging in international migration. Participate in the establishment, care and management of home gardens, but they are responsible for different plants and home Increase the resilience of their farming system in changing climatic, demographic and economic conditions. Seed storage, and the dispersion of seeds and plants in different land uses, farmers encourage plant diversity and consequently Younger home gardens and in home gardens where owners actively exchange plant material with other people. Which are maintained and enriched by farmers’ practices, particularly plant and seed exchange.
Our findings suggest that home gardens harbour high levels of biodiversity, Practices and how these influence biodiversity. Using a combination of qualitative and quantitative methods, we investigated how home gardens are integrated into local farming Home gardens are land use units embedded in a larger land use system, in this case in Candelaria Loxicha, Oaxaca, Mexico.
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