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agricultural land; sewage sludge; land application; heavy metals; groundwater contamination; soil pH; buffering capacity; risk; Scotland
Abstract:
... The projected increase in sewage sludge used on land within many countries in the European Community will provide a major source of entry for several heavy metals into the soil. Although the application rate of sewage sludge to agricultural land is constrained by maximum annual additions of heavy metals, there is a need to know the sensitivity of those soils to heavy metal inputs which are physica ...
agricultural land; watersheds; phosphorus; losses from soil; land use; soil types; streams; eutrophication; Scotland
Abstract:
... Phosphorus concentrations and outputs have been compared and contrasted in six small agricultural catchments in the west and northeast of Scotland. The loss of P from soils to stream waters was more from catchments with intensive dairy cattle farming in the west than from the less intensively stocked/arable catchments in the northeast, with striking differences being seen between the two regions. ...
... A suggested increase in the growth of macrophytic algae within the Ythan estuary (N.E. Scotland) over recent years has been linked to the increased amounts of nitrogen in the form of NO3-N entering the estuary from the river. The increased NO3 concentration in the river has been associated with recent changes in farming practices in this predominantly agricultural catchment. Terrestrially derived ...
... Nitrous oxide (N2O) flux simulations by four models were compared with year-round field measurements from five temperate agricultural sites in three countries. The field sites included an unfertilized, semi-arid rangeland with low N2O fluxes in eastern Colorado, USA; two fertilizer treatments (urea and nitrate) on a fertilized grass ley cut for silage in Scotland; and two fertilized, cultivated cr ...
Anser albifrons; adults; agricultural land; census data; extinction; flocks; geese; latitude; laws and regulations; multivariate analysis; nestlings; population growth; spring; surveys; survival rate; wintering grounds; Greenland; Ireland; Scotland
Abstract:
... After protection from hunting on the wintering range in 1982/83, complete surveys of Greenland white‐fronted geese at all known Irish and British wintering resorts have been carried out annually. These showed that this population increased by 5.0% per annum from 16,541 in spring 1983 to 30,459 in spring 1995, characterised by a 6.6% annual increase during 1982/83–1991/92, followed by a less rapid ...
... Field-scale predictions of nitrate (NO₃) leaching from farmland are needed to enable zones vulnerable to ground or surface water pollution with NO₃ to be identified. Use of simple water, solute transport, and N dynamics models is one way of making these predictions. In this paper, linked water and solute transport models (WATBAL/TRANSOL) are calibrated for two important arable soil types in Scotla ...
... Farm nutrient budgets related to 1994 were calculated for seven farm types, accounting for approximately 90% of the agricultural land in the River Ythan catchment, NE Scotland. The magnitude of fluxes of nitrogen (N) and phosphorus (P) at the catchment scale in relation to these farm types was also assessed. Positive budgets were calculated for all farm types, with the largest surpluses estimated ...
... The Permian sandstone and breccia aquifer of Dumfries has an important role in supplying water to the principal town in southwest Scotland. The area comprises mainly pastoral farmland with some industry and fish farming. Ongoing development of the aquifer has revealed the existence of complex groundwater flow through fractures and increasing nitrate concentrations. To further investigate these iss ...
Bryopsida; agricultural land; arable soils; environmental factors; grasslands; highlands; information management; land use change; linear models; livestock; multivariate analysis; prediction; species diversity; surveys; sward; vascular plants; weeds; Scotland
Abstract:
... Surveys of 87 sites within nine locations on Scottish agricultural land, during 1995-1997, recorded 335 species of vascular plants and 95 bryophyte species, within 31 recognisable plant communities. Multivariate analysis placed the vegetation into five main vegetation types, with differing plant species richness (S: number of species per 100 m2). These were upland grassland (mean S=37); mesotrophi ...
... Questions: Can seed addition enhance the success of establishing species-rich grassland on former arable land? Are sowing date and cutting regime important in determining success?Location: Aberdeen and Elgin, northeast Scotland, United Kingdom. Methods: A field experiment was conducted at two sites to assess the effect of seed addition, sowing date and cutting regime on the vegetation developing o ...
land use change; agroecosystems; agricultural land; landscapes; honors and awards; cost benefit analysis; environmental policy; woodlands; biodiversity; Scotland
Abstract:
... GIS-based spatial targeting is increasingly recognised as a potentially useful tool to design more efficient policy interventions. The use of this tool has also been advocated in the context of incentive-based agri-environmental schemes, but there has been little work to date to estimate the level of efficiency gains which it may help to achieve. This paper investigates the requirements to arrive ...
afforestation; agricultural land; biodiversity; case studies; developed countries; farms; landscapes; planting; public policy; recreation; socioeconomics; stakeholders; woodlands; Scotland
Abstract:
... Many conservation and restoration efforts in developed countries are increasingly based on the premise of recognising and stimulating more 'multi-functionality' in agricultural landscapes. Public policy making is often a pragmatic process that involves efforts to negotiate trade-offs between the potentially conflicting demands of various stakeholders. Conservationists' efforts to influence policy ...
... Optically stimulated luminescence (OSL) dating of sand has been used to identify periods of enhanced aeolian activity at two coastal archaeological sites in Orkney that coincide with periods of Holocene climatic deterioration recorded elsewhere in both Scotland and W Europe. Areas of Tofts Ness, Sanday were settled from the Neolithic, abandoned in the late Neolithic/early Bronze Age, reoccupied an ...
agricultural land; agroecosystems; ponds; drainage channels; streams; rivers; lakes; species diversity; aquatic invertebrates; macrophytes; geographical variation; water flow; pesticides; spatial variation; acid soils; agrochemicals; England; Scotland; Wales
Abstract:
... This study analysed information from national and regional datasets gathered in Great Britain describing the occurrence of aquatic macroinvertebrates and macrophytes in ponds, ditches, streams, rivers and lakes, across 12 agricultural landscape classes and a 13th class comprising non-agricultural land. The study found major differences in the composition of the invertebrate faunas of running and s ...
... The influence of predators on the distribution, density and dynamics of their prey species has long been of interest to ecologists and wildlife managers. Where the prey population is also utilized by humans, conflicts may arise through competition for a limited resource. Because gamebird shooting in the UK provides employment, recreation and income, the impact of birds of prey on gamebird populati ...
... Bumblebees (Bombus spp.) play a key role within agricultural systems as pollinators of crops and wild flowers. However, this taxon has suffered severe declines as a result of agricultural intensification. Conservation efforts largely focus on providing forage resources for bumblebees through the summer, but providing suitable habitat during the period of nest foundation in early spring could be a ...
... Extensification of grassland management has been put forward as a method of redressing the biodiversity losses seen in agricultural landscapes as a result of increases in production. However, there is little evidence for its success, particularly in upland areas. Two long-term (16 year) experiments at different sites compared extensive grazing, abandonment and continued intensive grazing, assessin ...
... The diversity and abundance of the within-field seedbank and emerged weed flora, were measured in over 100 fields from conventional, integrated and organic farms across the arable east of Scotland. Both seedbank and emerged flora showed significant responses to a management intensity gradient from farms with high agrochemical inputs and winter cropping to those with no inorganic inputs, spring cro ...
Sitophilus; agricultural land; biodiversity; birds; case studies; corn; farmers; farms; food availability; grasslands; issues and policy; monitoring; mowing; population growth; subsidies; Scotland
Abstract:
... 1. Agri-environment schemes (AES) are the main European policy response to biodiversity loss caused by agricultural intensification. Maximizing their effectiveness is a key policy challenge. Monitoring is essential to inform adaptation and improvement of schemes over time, and to understand how measures may need to vary across a species' range. 2. We measured changes in breeding abundance of a sev ...