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- Hertel, Ole, et al.
(författare)
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Assessing atmospheric nitrogen deposition to natural and semi-natural ecosystems - Experience from Danish studies using the DAMOS
- 2013
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Ingår i: Atmospheric Environment. - : Elsevier BV. - 1352-2310. ; 66, s. 151-160
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Tidskriftsartikel (refereegranskat)abstract
- Local agricultural emissions contribute significantly to the atmospheric reactive nitrogen loads of Danish terrestrial ecosystems. In the vicinity of the sources this may be up to 6-8 kg N ha(-1) yr(-1) depending on location and ecosystem type. This contribution arises from dry deposition of gas phase ammonia derived from local livestock production. Long-range transport, however, often constitutes the largest contribution to the overall atmospheric terrestrial reactive nitrogen loadings in Denmark. This is often in the range 10-15 kg N ha(-1) yr(-1) and consists mainly of aerosol phase nitrate and ammonium (reaction products of nitrogen oxides and ammonia), but also dry deposition of other reactive nitrogen compounds (mainly nitrogen oxides in the form of gas phase nitric acid and nitrogen dioxide). In Denmark's environmental management of the sensitive terrestrial ecosystems modelling tools are required that account for both the local and the long-range transported contributions. This motivated development of the Danish Ammonia MOdelling System (DAMOS) that has been successfully applied to the assessment of atmospheric nitrogen loadings to sensitive Danish ecosystems. We present here three different examples of such assessments. Our results show that ecosystems located in Western Denmark (Case 1) receive the highest loads of atmospheric nitrogen depositions which generally exceed the critical load. This part of the country has the highest livestock density. In the Eastern part of the country, the atmospheric loadings are often below or close to the lower end of the interval for critical load values. These lower loads in Eastern Denmark (Case 2) are due to lower density of agricultural activities, as well as, lower precipitation rates, which leads to less wet deposition of reactive nitrogen. In general there is a gradient in atmospheric deposition over the country, with the highest depositions in the South-Western part of Denmark (Case 3) due to long-range transport contributions from North-Western Europe, but also due to local ammonia deposition associated with the high local emission from the high density livestock farming in this area. (c) 2012 Elsevier Ltd. All rights reserved.
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| 2. |
- O'connell, Malene Barfod, et al.
(författare)
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Stuck in tradition-A qualitative study on barriers for implementation of evidence-based nutritional care perceived by nursing staff
- 2018
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Ingår i: Journal of Clinical Nursing. - : Wiley. - 0962-1067 .- 1365-2702. ; 27:43163, s. 705-714
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Tidskriftsartikel (refereegranskat)abstract
- Aims and objectives: To explore the barriers for nutritional care as perceived by nursing staff at an acute orthopaedic ward, aiming to implement evidence-based nutritional care. Background: Previous studies indicate that nurses recognise nutritional care as important, but interventions are often lacking. These studies show that a range of barriers influence the attempt to optimise nutritional care. Before the implementation of evidence-based nutritional care, we examined barriers for nutritional care among the nursing staff. Design: Qualitative study. Methods: Four focus groups with thirteen members of the nursing staff were interviewed between October 2013-June 2014. The interview guide was designed according to the Theoretical Domains Framework. The interviews were analysed using qualitative content analysis. Results: Three main categories emerged: lacking common practice, failing to initiate treatment and struggling with existing resources. The nursing staff was lacking both knowledge and common practice regarding nutritional care. They felt they protected patient autonomy by accepting patient's reluctance to eat or getting a feeding tube. The lack of nutritional focus from doctors decreased the nursing staffs focus leading to nonoptimal nutritional treatment. Competing priorities, physical setting and limited nutritional supplements were believed to hinder nutritional care. Conclusion: The results suggest that nutritional care is in a transitional state from experience- to evidence-based practice. Barriers for nutritional care are grounded in lack of knowledge among nursing staff and insufficient collaboration between nursing staff and the doctors. There is a need for nutritional education for the nursing staff and better support from the organisation to help nursing staff provide evidence-based nutritional care. Relevance to clinical practice: This study contributes with valuable knowledge before the implementation of evidence-based nutritional care. The study provides an understanding of barriers for nutritional care and presents explanations to why nutritional care has failed to become an integrated part of the daily treatment and care.
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