Environmental Monitoring on Research Centres and Large Farms Using Spatial Data Management Tools.

End of Project ReportThe objective of project 4480 was to build an environmental management system by using a visual or map based approach to develop new ways to manage environmental data on a large farm or an estate of several farms. Geographic information system (GIS) techniques are extremely powerful, but they tend to be complex, and often require a high degree of skill and training in order to use them. Using systems analysis, the fundamental environmental management data were identified and a simplified spatial approach was developed to manage these environmental data. Johnstown Castle Research Centre consists of three farms, ornamental grounds, forests, lakes and streams. A set of database tables was generated to hold farm environmental data on these farms. These included: annual management summary data giving the average number of different types of animals, the amount of organic manure and N, P and K nutrients produced by them, fertiliser purchases, organic and chemical nutrient usage on the farm, achievement of nutrient management planning targets, etc. monthly livestock information recording the numbers of livestock of different types for the three farms, together with management comments on the changes and transfer that take place over the month, detailed land use and nutrient use information for each field or plot on the estate, recent soil analyses information for the experimental plots, analysis results of recent water samples which are taken regularly at sampling points throughout the estate. The topographical, soil and site features were digitised, in order to collect information on the overall and individual farm boundaries. This included roads, hedges and ditches, streams, rivers and lakes, the buildings and most particularly, the boundaries of all field and experimental plots. When the digitisation was complete, a set of bespoke programs was built, using the GIS system, ArcView. To make the system "user friendly", the menu system was customised by removing complex features; retaining only those buttons and menu options that served a purpose useful to the application. The programs were unified into a PC system called Johnstown Castle Environmental Monitoring System or JCEMS. For the future, it is envisaged that the maps and spatial techniques will be embodied into an Access database system and developed for use by other research stations and farms.European Union Structural Funding (EAGGF

Estudio de necesidades de residencialización de la margen izquierda de la ría del Nervión

El presente estudio está contenido en una comunicación presentada en las I Jornadas de Gerontología Psicosocial del País Vasco, celebradas en Bergara, los días 23 y 24 de Junio de 1995.En él se pretende localizar las necesidades de residencialización de la Margen Izquierda de la Ría del Nervión. Las conclusiones son expuestas por colectivos atendidos: tercera edad, minusválidos físicos, enfermos convalecientes, infancia, juventud y sin techo

Multiple causes of interannual sea surface temperature variability in the equatorial Atlantic Ocean

The eastern equatorial Atlantic Ocean is subject to interannual fluctuations of sea surface temperatures, with climatic impacts on the surrounding continents. The dynamic mechanism underlying Atlantic temperature variability is thought to be similar to that of the El Nino/Southern Oscillation (ENSO) in the equatorial Pacific, where air-sea coupling leads to a positive feedback between surface winds in the western basin, sea surface temperature in the eastern basin, and equatorial oceanic heat content. Here we use a suite of observational data, climate reanalysis products, and general circulation model simulations to reassess the factors driving the interannual variability. We show that some of the warm events can not be explained by previously identified equatorial wind stress forcing and ENSO-like dynamics. Instead, these events are driven by a mechanism in which surface wind forcing just north of the equator induces warm ocean temperature anomalies that are subsequently advected toward the equator. We find the surface wind patterns are associated with long-lived subtropical sea surface temperature anomalies and suggest they therefore reflect a link between equatorial and subtropical Atlantic variability

Ribosome rearrangements at the onset of translational bypassing.

Bypassing is a recoding event that leads to the translation of two distal open reading frames into a single polypeptide chain. We present the structure of a translating ribosome stalled at the bypassing take-off site of gene 60 of bacteriophage T4. The nascent peptide in the exit tunnel anchors the P-site peptidyl-tRNAGly to the ribosome and locks an inactive conformation of the peptidyl transferase center (PTC). The mRNA forms a short dynamic hairpin in the decoding site. The ribosomal subunits adopt a rolling conformation in which the rotation of the small subunit around its long axis causes the opening of the A-site region. Together, PTC conformation and mRNA structure safeguard against premature termination and read-through of the stop codon and reconfigure the ribosome to a state poised for take-off and sliding along the noncoding mRNA gap

The Effect of Agricultural Practices on a Dairy Farm on Nitrate Leaching to 1m

Dairy farms, in Ireland, carry the highest stock densities and use the highest rates of fertiliser nitrogen (N). They constitute the highest risk of nitrate leaching, especially where soils are thin or free-draining. The effect of 4 grass managements on leaching was studied on a dairy farm having free-draining soils overlying Karst limestone. This was a new, farm-comprehensive approach to nitrate leaching which had not been carried out previously

Nitrogen Response of Spring and Winter Wheat to Biosolids Compared to Chemical Fertiliser

Irish sewage sludge production was over 30,000 t/year in the 1990s (EPA, Ireland, 2003). Application to agricultural land is a management option for this organic material as it results in the recycling of the nutrients they contain for crop production. The EU Directive (91/271/EEC) encourages the recycling of sewage sludge as biosolids to agriculture. However, up to 1999, only about 5 % of biosolids produced was applied to agricultural land. In this study, several biosolids and a chemical fertiliser were used to assess N availability for spring and winter wheat (Triticum aestivum,) production in a pot experiment

Pathways for nutrient loss to water with emphasis on phosphorus

Teagasc wishes to acknowledge the support of the Environmental Research Technological Development and Innovation (ERTDI) Programme under the Productive Sector Operational Programme which was financed by the Irish Government under the National Development Plan 2000-2006.End of project reportThe main objective of this project was to study phosphorus (P) loss from agricultural land under a range of conditions in Ireland, to quantify the main factors influencing losses and make recommendations on ways to reduce these losses. This report is a synthesis of the main conclusions and recommendations from the results of the studies. The final reports from the individual sub-projects in this project are available from the EPA (www.epa.ie).Environmental Protection Agenc

The role of curvature in modifying frontal instabilities. Part II: Application of the criterion to curved density fronts at low Richardson numbers

We continue our study of the role of curvature in modifying frontal stability. In Part 1, we obtained an instability criterion valid for curved fronts and vortices in gradient wind balance (GWB): Φ′ = L′q′ < 0, where L′ and q′ are the non-dimensional absolute angular momentum and Ertel potential vorticity (PV), respectively. In Part 2, we investigate this criterion in a parameter space representative of low-Richardson number fronts and vortices in GWB. An interesting outcome is that, for Richardson numbers near one, anticyclonic flows increase in q′, while cyclonic flows decrease in q′, tending to stabilize anticyclonic and de-stabilize cyclonic flow. Although stability is marginal or weak for anticyclonic flow (owing to multiplication by L′), the de-stabilization of cyclonic flow is pronounced, and may help to explain an observed asymmetry in the distribution of small-scale, coherent vortices in the ocean interior. We are referring mid-latitude submesoscale and polar mesoscale vortices that are generated by friction and/or buoyancy forcing within boundary layers but that are often documented outside these layers. A comparison is made between several documented vortices and predicted stability maps, providing support for the proposed mechanism. Finally, a simple expression, which is a root of the stability discriminant, Φ′, explains the observed asymmetry in the distribution of vorticity. In conclusion, the generalized criterion is consistent with theory, observations and recent modeling studies, and demonstrates that curvature in low-stratified environments can de-stabilize cyclonic and stabilize anticyclonic fronts and vortices to symmetric instability. The results may have implications for Earth system models