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Displaying 56 - 60 of 661Conserving landraces and improving livelihoods: how to assess the success of on-farm conservation projects?
Smallholder farmers who grow diverse landraces in centres of crop diversity contribute to sustaining the capacity of agricultural and food systems to adapt to change by maintaining crop evolution in their fields today, thus enabling humanity to continue to have the broad genetic variation needed to adapt crops to changes tomorrow. Given this fact, the last 20 years have witnessed an ever-growing interest in on-farm conservation of crop infra-specific diversity.
Land-use/land cover changes and their driving forces around wetlands in Shangri-La County, Yunnan Province, China
The Shangri-La County of the Yunnan Province, SW China, is an economically and ecologically important area. This is especially true for Jiantang that is famous for the Napahai, Bitahai and Shudu Lake wetlands. However, continuing development has threatened the wetland ecosystems and the associated biodiversity in these areas. To better document such changes in land use and their effect on the ecosystem, land use was mapped using a time series of satellite images acquired in 1974, 1993, 2000 and 2012. The results of this survey suggest that forest cover first decreased and then increased.
Cost-benefit analysis blueprint for regional weed management: Nassella neesiana (Chilean needle grass) as a case study
We describe a bio-economic model for Nassella neesiana (Chilean needle grass) that estimates the net benefit of a containment programme for the weed in Canterbury as the difference between the cost of containment and the costs incurred over time should the weed spread within sheep and beef pastoral systems. Logistic spread is assumed with the maximum area that could be invaded (772,080 ha) determined by constraining a climate niche model for the weed to susceptible farm system types within productive land use capability classes.
Human impact on avian diversity in rural Mediterranean areas
Human activities influence the biodiversity of Mediterranean ecosystems and are involved in the transformation of natural habitats into farmland. We surveyed birds using the point count method on 288 plots at a 50-m radius in three altitudinal landscapes with different rural character in spring and autumn. The results showed that bird species richness in the study area was high (74 species). High total species richness was found in the upland rural landscape characterized by mixed land use and high landscape diversity.
Community’s forest dependency and its effects towards the forest resources and wildlife abundances in Sarawak, Malaysia
Forests play an important role in the community’s livelihood, and this role has created an important relationship or mutual dependence between the forest and the community. Therefore, this study was conducted to identify the types of community’s forest dependency and to identify the effects of community’s forest dependency towards forest resources and wildlife abundance. The data were collected using the self-administered questionnaire, involving 204 community members in Bau District, Sarawak.