Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2016
Authors
Thiago Castro Samuel Roggia Vitalis Wekesa Rafael de Andrade Moral Clarice GB Demétrio Italo Jr. Delalibera Ingeborg KlingenAbstract
Background. The beneficial fungus Neozygites floridana kills the two-spotted spider mite Tetranychus urticae, which is a serious polyphagous plant pest worldwide. Outbreaks of spider mites in strawberry and soybean have been associated with pesticide applications. Pesticides may affect N. floridana and consequently the natural control of T. urticae. N. floridana is a fungus difficult to grow in artificial media, and for this reason, very few studies have been conducted with this fungus, especially regarding the impact of pesticides. The aim of this study was to conduct a laboratory experiment to evaluate the effect of pesticides used in strawberry and soybean crops on N. floridana. Results. Among the pesticides used in strawberry, the fungicides sulfur and cyprodinil + fludioxonil completely inhibited both the sporulation and conidial germination of N. floridana. The fungicide fluazinam affected N. floridana drastically. The application of the fungicide tebuconazole and the insecticides fenpropathrin and abamectin resulted in a less pronounced negative effect on N. floridana. Except for epoxiconazole and cyproconazole, all tested fungicides used in soybean resulted in a complete inhibition of N. floridana. Among the three insecticides used in soybean, lambda-cyhalothrin and deltamethrin resulted in a significant inhibition of N. floridana. Conclusion. The insecticides/ acaricides abamectin and lambda-cyhalothrin at half concentrations and fenpropathrin and permethrin and the fungicide tebuconazole at the recommended concentrations resulted in the lowest impact on N. floridana. The fungicides with the active ingredients sulfur, cyprodinil + fludioxonil, azoxystrobin, azoxystrobin + cyproconazole, trifloxystrobin + tebuconazole and pyraclostrobin + epoxiconazole negatively affected N. floridana. © 2015 Society of Chemical Industry
Abstract
No abstract has been registered
Authors
Marina Dolbeth Per Stålnacke Fátima L. Alves Lisa P. Sousa Geoffrey D. Gooch Valeriy Khokhlov Yurii Tuchkovenko Javier Lloret Małgorzata Bielecka Grzegorz Różyński João A. Soares Susan Baggett Piotr Margonski Boris V. Chubarenko Ana I. LillebøAbstract
A decision support framework for the management of lagoon ecosystems was tested using four European Lagoons: Ria de Aveiro (Portugal), Mar Menor (Spain), Tyligulskyi Liman (Ukraine) and Vistula Lagoon (Poland/Russia). Our aim was to formulate integrated management recommendations for European lagoons. To achieve this we followed a DPSIR (Drivers-Pressures-State Change-Impacts- Responses) approach, with focus on integrating aspects of human wellbeing, welfare and ecosystem sustainability. The most important drivers in each lagoon were identified, based on information gathered from the lagoons’ stakeholders, complemented by scientic knowledge on each lagoon as seen from a land-sea perspective. The DPSIR cycles for each driver were combined into a mosaic-DPSIR conceptual model to examine the interdependency between the multiple and interacting uses of the lagoon. This framework emphasizes the common links, but also the specificities of responses to drivers and the ecosystem services provided. The information collected was used to formulate recommendations for the sustainable management of lagoons within a Pan-European context. Several common management recommendations were proposed, but specificities were also identified. The study synthesizes the present conditions for the management of lagoons, thus analysing and examining the activities that might be developed in different scenarios, scenarios which facilitate ecosystem protection without compromising future generations.
Abstract
No abstract has been registered
Abstract
Accessibility is a central issue for human activity, particularly in mountain areas. We investigate changes in physical accessibility in a Western Norwegian mountain area during the past 40–60 years and identify driving forces of changes. Changes in accessibility were measured as changes in travel time between permanently and seasonally inhabited farmsteads. Additionally, travel time from new access points in the mountains was calculated. C.75% of the investigated access routes to seasonal farmsteads have remained unchanged due to continued use or maintenance work, or been slightly improved due to development of paths into roads. In addition, new access routes have emerged as a result of road construction. Regrowth of paths due to abandonment of seasonal farming has reduced accessibility. Changes in accessibility have led to a concentration of activities in more easily accessibly parts of the study area. Documented changes in accessibility result from a complex interaction of driving forces that initiate or influence change. Important drivers interacting with road construction and abandonment of seasonal farming can be categorized as socio-economic, political and technological. However, the importance of culturally rooted commitment of local people or a small number of enthusiasts must not be underestimated.
Abstract
In a landscape of fragmented private ownership, the need to coordinate game management across large areas presents challenges for landowners and public agencies alike. This paper describes how a recent reorganization of moose management in Norway achieves landscape-level planning while maintaining a tradition of local management by hunting teams. These two seemingly contradictory imperatives – coordinating wildlife management across large areas while keeping benefits and control in the hands of local resource users – are resolved through a nesting of management institutions, wherein the state serves a regulatory function and mid-level government (the county) serves to facilitate inter-local cooperation. This paper documents how the system is structured and describes the balance of incentives that enable the system to work. Information was gathered via interviews with staff at the Norwegian Directorate for Nature Management (now called the Norwegian Environment Agency), with wildlife management officials at the municipal level, with hunters, and from the most recent regulatory documents.
Authors
Z. Kruma L. Tomsone R. Galoburda E. Straumite A. Kronberga Mauritz ÅssveenAbstract
Grain products are the main source of carbohydrates but they also contain other bioactive substances such as phenolic compounds. Content of phenolic compounds differ among cereal types, varieties, and farming methods. The aim of the current study was to assess total phenolic content and radical scavenging activity in different oats and barley varieties compared to hulled ones. In the experiment hull-less varieties / lines were analysed: three barley (line ‘GN 03386’, from Norway and ‘Kornelija’, ‘Irbe’ from Latvia) and three oats varieties (‘Bikini’, ‘Nudist’, from Norway and ‘Stendes Emilija,’ from Latvia). One hulled variety of barley and oats from each country was included in the experiment for comparison. For the isolation of phenolic compounds ultrasound assisted extraction was used. For all extracts the total phenol content and DPPH, ABTS+ radical scavenging activity were determined spectrophotometrically. Overall, the highest content of total phenols was detected in hull-less barley samples. The barley variety with the highest content was line ‘GN 03386,’ followed by varieties ‘Kornelija’, ‘Irbe,’ and hulled Norwegian barley variety ‘Tyra’. High DPPH and ABTS+ radical scavenging activity was recorded in barley line ‘GN 03386’. Generally, there was strong correlation between total phenol content and ABTS˙+radical scavenging activity and moderate correlation between total phenol content and DPPH radical scavenging activity. In conclusion, the barley varieties had generally higher content of bioactive substances than oats and the barley line ‘GN 03386’ seems to be one of the best.
Authors
Callum Aidan Stephen Hill Janka DibdiakovaAbstract
No abstract has been registered
Authors
Juliet Biira Jens Leth Hougaard Mogens LundAbstract
Denmark is one of the EU countries with a highly recognised agricultural sector, a high level of animal health and one of the lowest medication usages. In this article we aim to provide an overview of both private and public animal health incentives nested in the cattle and pig production industry that influence the decisions and behaviours of farmers in prevention of livestock disease epidemics. Not only do individual Danish pig and cattle farmers aim at highly efficient animal production, they are also involved in collective marketing and contracting which can enhance social capital, peer pressure and instill a greater sense of ownership of disease control prevention. Public incentives including rules on how animals should be transported within Denmark, SPF certification requirements and rules on farm biosecurity further improve farmer incentives to prevent animal diseases. However, Danish pig and cattle farmers’ incentives could be further improved by specifying consequences for not following requirements such as failure to make a compulsory biosecurity plan. The relatively high compensation in case of a disease outbreak provides a safety net for farmers, encourages them to quickly report suspected notifiable diseases but it could also reduce incentives for disease prevention due to the relatively high amounts of compensation.
Authors
Johanna Gottschamel Andreas G. Lössl Stephanie Ruf Yanliang Wang Morten Skaugen Ralph Bock Jihong Liu ClarkeAbstract
Abstract Dengue fever is a disease in many parts of the tropics and subtropics and about half the world’s popula- tion is at risk of infection according to the World Health Organization. Dengue is caused by any of the four related dengue virus serotypes DEN-1, -2, -3 and -4, which are transmitted to people by Aedes aegypti mosquitoes. Cur- rently there is only one vaccine (DengvaxiaÒ) available (limited to a few countries) on the market since 2015 after half a century’s intensive efforts. Affordable and accessible vaccines against dengue are hence still urgently needed. The dengue envelop protein domain III (EDIII), which is capable of eliciting serotype-specific neutralizing antibod- ies, has become the focus for subunit vaccine development. To contribute to the development of an accessible and affordable dengue vaccine, in the current study we have used plant-based vaccine production systems to generate a dengue subunit vaccine candidate in tobacco. Chloroplast genome engineering was applied to express serotype- specific recombinant EDIII proteins in tobacco chloroplasts using both constitutive and ethanol-inducible expression systems. Expression of a tetravalent antigen fusion con- struct combining EDIII polypeptides from all four ser- otypes was also attempted. Transplastomic EDIII- expressing tobacco lines were obtained and homoplasmy was verified by Southern blot analysis. Northern blot analyses showed expression of EDIII antigen-encoding genes. EDIII protein accumulation levels varied for the different recombinant EDIII proteins and the different expression systems, and reached between 0.8 and 1.6 % of total cellular protein. Our study demonstrates the suitability of the chloroplast compartment as a production site for an EDIII-based vaccine candidate against dengue fever and presents a GatewayÒ plastid transformation vector for inducible transgene expression.