Environmental and biodiversity impacts of organic farming in the hills and uplands of Wales

1. Organic farming is based on principles of co-existence with natural systems, the minimisation of pollution and damage to the environment, and the promotion of the health of soil, plant and animal to produce healthy food with high standards of animal welfare and respect for the wider social and ecological impacts of the agricultural system. 2. Organic Farming has become an important aspect of EU agri-environment policy. Since the implementation of EC Reg. 2078/92 the EU promotes organic farming explicitly on its positive effects on the environment. 3. The environmental and biodiversity benefits of organic systems in the lowlands for mixed farming is generally accepted (Shepherd, 2003) but similar benefits for upland systems have not been identified. This report has been produced by OCW with funding from CCW to address this gap. Where relevant, means to ensure the beneficial impacts through changes to agri-environment schemes, organic standards, and education and dissemination are identified. 4. Hill and uplands are characterised as areas over 200m above sea level where the physical landscape results in production constraints. 5. Biodiversity losses linked to changes in hill and upland agriculture include the erosion of genetic diversity in farmed livestock and crops as well as in wildlife and flora, a reduction in habitat, soil and wildlife diversity and the loss of local knowledge and farming culture. 6. The organic approach to sustainable agriculture in hill or upland systems is through the use of multi species swards and mixed stocking. 7. The report identifies potential points of difference between organic and conventional management practices with regard to hill and upland farming and highlights research requirements to confirm or explore those potentials. 8. Conventional farms can adopt any or all of the practices of the organic farming system, but the engagement with the entire system and annual inspections are specific to the organic farmer. 9. The impacts are not just determined by the system of organic regulations and but also by the management ability and technical skills of the farmer and workers. 10. The practices on organic livestock farms identified that may differ from conventional and have direct biodiversity or environmental impacts are: lower stocking rates (overall manure loading maximum of 170kg/N/ha/yr); an adjustment of the stocking balance (increasing ratio of cattle to sheep); keeping indigenous breeds and strains adapted to the environmental conditions on the farm; limitation on products to control external parasites; reduction and restriction on the use of prophylactic veterinary medicines; the use of foragebased diets; storage and use of slurries, manures and composts, and constraints on the import and export of nutrients. 11. Organic practices in management of grassland and crops identified that may differ from conventional and have direct biodiversity or environmental impacts are: cessation of N fertiliser use; restriction on P & K use; use of lime to maintain pH; use of clovers and herbs in grass leys; cessation of use of chemical pesticides and all herbicides; mechanical and manual weed control and sensitive and timely cultivations; the use of mixed farm systems and rotations on in-bye land; the use of cover crops and undersowing; the use of green manures. 12. Organic regulations do not require habitat creation, but standards state, “that concern for the environment should manifest”…“in high standards of conservation management throughout the organic holding”. Discussion 13. Apart from practices that impact directly on biodiversity or the environment, each management decision on the farm will have knock-on effects that have their own consequences, for example welfare standards for livestock require bedding materials and greater housing space. 14. Organic farms operating solely in the hills and uplands can only be part of a system. Use of in-bye land or having a relationship with lowland holdings to provide winter-feed and forage is necessary to comply with regulations. This will increase the amount of lowland managed organically, bringing widely recognised environmental benefits. 15. Organic agriculture is, by legal definition, a system of production and is based on principles and uses practices adopted to optimise the health of the system. Any farmer may adopt individual practices, and the Tir Gofal scheme provides an opportunity for farmers to provide positive conservation measures, whether conventional or organic. Farming under the EU Regulation defining Organic farming provides assurance to the end consumer that the system used to produce or process the food product was according to that system. This provides a reliable means for consumers to support a system of agriculture that fits more closely with their expectations than intensive systems. 16. Any advantages of lower stocking rates and mixed stocking will only be maintained while organic farms are viable. Organic labelling provides an opportunity for consumers to make a positive choice for high welfare, environmentally benign systems; however the difficulties of marketing, the lack of consumer awareness of food production issues and unwillingness to pay are barriers to access to premium markets for many producers. Conclusions: 17. The potential benefits of individual practices outlined in the document are often clear, but there are currently few data to confirm the extent of some of the practices that may have most beneficial impact. The need for data on actual practices of the organic farmers in the hills and uplands is therefore highlighted. 18. Few Standards changes are recommended, however the monitoring of derogations to standards and use of restricted veterinary inputs is recommended. 19. Research and development needs, technical, education and dissemination, and agri-environment policy issues which may establish, ensure, or enhance the environmental and biodiversity impacts of organic farming in the hills and uplands are outlined. 20. Infrastructure work to integrate hill and upland and lowland systems is necessary to facilitate organic farming in the uplands; this may assist the viability of lowland organic holdings: the environmental benefits of which are established

The BAR Domain Superfamily: Membrane-Molding Macromolecules

Membrane-shaping proteins of the BAR domain superfamily are determinants of organelle biogenesis, membrane trafficking, cell division, and cell migration. An upsurge of research now reveals new principles of BAR domain-mediated membrane remodeling, enhancing our understanding of membrane curvature-mediated information processing

Targeting sexual health services in primary care: a systematic review of the psychosocial correlates of adverse sexual health outcomes reported in probability surveys of women of reproductive age

BACKGROUND: Women using primary care vary in need for sexually transmitted infections (STIs) testing and contraception. Psychosocial correlates of these needs may be useful for targeting services. We undertook a systematic review to identify psychosocial correlates of STI acquisition, unplanned pregnancy (UP), abortion and risky sexual behaviours in general population samples of women of reproductive age. METHODS: We searched bibliographic databases for probability surveys of women aged 16-44years in the European Union, USA, Canada, Australia, UK or New Zealand undertaken January 1994-January 2014. RESULTS: Eleven papers were included. Unplanned pregnancy was associated with smoking, depression, being single and sexual debut <16years. Abortion was associated with lack of closeness to parents, leaving home at an early age, and relationship break-up. Multiple partnerships were associated with intensity of marijuana and alcohol use, and smoking. STI diagnosis was associated with relationship break-up and younger partners. Non-use of contraception was associated with smoking, obesity, relationship status, sedentary lifestyles, fatalistic pregnancy attitudes and lower alcohol use. Condom non-use was higher (at first sex) with partners 5+years older and lower (at last sex) in less stable partnerships. CONCLUSION: Psychosocial variables, particularly relationship status and smoking, may help identify women in primary care for STI testing and contraception advice and supply

Optimization of electric vehicle charging in a fully (nearly) electric campus energy system

The goal of this work is to build a set of computational tools to aid decision making for the modelling and operations of integrated urban energy systems that actively interact with the power grid of the future. District heating and cooling networks incorporating heat recovery and large-scale thermal storage, such as the Stanford campus system, dramatically reduce energy waste and greenhouse gas emissions. They have historically played a small, but important role at a local level. Here we explore the potential for other co-benefits, including the provision of load following services to the electrical grid, carbon emissions reductions or demand charge management. We formulate and solve the problem of optimally scheduling daily operations for different energy assets under a demand-charge-based tariff, given available historical data. We also explore the interaction and interdependence of an electrified thermal energy network with actively managed power sources and sinks that concurrently draw from the same electrical distribution feeder. At Stanford University, large-scale electric vehicle charging, on-site photovoltaic generation and controllable building loads could each separately represent up to 5 MW, or 15% of the aggregate annual peak power consumption in the very near future. We cooptimize financial savings from peak power reductions and shifting consumption to lower price periods and assess the flexibility of both the different components and the integrated energy system as a whole. We find that thermal storage, especially complemented with electric vehicle charging, can play the role that is often proposed for electrochemical storage for demand charge management applications and quantitatively evaluate potential revenue generators for an integrated urban energy system. Although there is little value to smart charging strategies for low penetrations of electric vehicles, they are needed to avoid significant increases in costs once penetration reaches a certain threshold – in the Stanford case, 750-1,000 vehicles, or 25% of the vehicle commuter population

Review: Non-transecting bulbar urethroplasty using buccal mucosa

Augmentation urethroplasty using oral mucosal graft has become the standard surgical treatment of long bulbar strictures. In very tight strictures the urethral plate is narrowed to the extent that an almost circumferential substitution with oral graft is necessary, with suboptimal results. If the obliterative segment within a longer stricture is short it is possible, through a dorsal stricturotomy, to excise it in a non-transecting manner, leaving the ventral spongiosum intact and anastomose the mucosal edges to reconstitute the urethral plate to an adequate calibre. The stricturotomy is subsequently augmented with an oral mucosal graft. We describe this technique as the augmented non-transecting anastomotic bulbar urethroplasty. It also allows for use of a narrower and shorter graft. In our hands this procedure is associated with a 100% radiological success rate and a 95% patient satisfaction rate at a mean follow-up of 14.8 months (5.7–52.6 months).Keywords: Urethral stricture; Bulbar urethroplasty; Non-transecting;Buccal mucosal graf

New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars

We present the results of the continuation of our magnetic survey with FORS1 at the VLT of a sample of B-type stars consisting of confirmed or candidate beta Cephei stars and Slowly Pulsating B stars. Roughly one third of the studied beta Cephei stars have detected magnetic fields. The fraction of magnetic Slowly Pulsating B and candidate Slowly Pulsating B stars is found to be higher, up to 50%. We find that the domains of magnetic and non-magnetic pulsating stars in the H-R diagram largely overlap, and no clear picture emerges as to the possible evolution of the magnetic field across the main sequence.Comment: 2 pages, 1 figure, to appear in Proceedings of IAU Symposium 259 "Cosmic Magnetic Fields: from Planets, to Stars and Galaxies", Tenerife, Spain, November 3-7, 200