Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Europe: the paradox of landscape change : A case-study based contribution to the understanding of landscape transitions
Sluis, Theo van der - \ 2017
University. Promotor(en): Bas Arts, co-promotor(en): Bas Pedroli. - Wageningen : Wageningen University - ISBN 9789463438094 - 227
europe - case studies - landscape - change - landscape conservation - land use dynamics - cultural landscape - regions - urbanization - rural areas - policy - ecosystem services - agri-environment schemes - europa - gevalsanalyse - landschap - verandering - landschapsbescherming - dynamiek van het ruimtegebruik - cultuurlandschap - regio's - urbanisatie - platteland - beleid - ecosysteemdiensten - agrarisch natuurbeheer

This thesis explores the processes of change in European rural landscapes. Landscapes have evolved over millennia as a result of human influence on the physical environment. Europe has a wide variety of landscapes that can alter within a relatively short distance, and which often form part of the national cultural identity of a European country. Central to this thesis, however, are insights into the processes of landscape change.

In this context, the overall objective of this thesis is: To assess the dynamics of landscape change and increase the scientific understanding of the underlying processes and policies that have shaped the rural landscapes of Europe after establishment of the EU.

The focus is on the period following the establishment of the European Economic Community in 1965, which is hypothesised as the main driver of landscape change. European policies have an important direct impact on national and regional policies. The way that European policy transposition took place, existing governance structures and policy cultures also defined how ‘European policy’ influenced countries and regions. The object of this study is in particular the changing rural landscape, including the role of European agricultural policies, such as the Common Agricultural Policy (CAP) and conservation policies (for example Natura2000) in these changes.

The thesis uses an integrated approach to assess the various processes of landscape change: land use transitions, urbanisation of the countryside, land use intensification, extensification or abandonment. These processes are linked to drivers of landscape changes, the role of policies, and how these affect the landscape processes.

Research questions

The research objective requires unravelling the correlations between land-related policies and landscape change in the EU, the drivers of landscape change and in particular how policies affect the European landscape. To operationalise this objective, the following research questions are addressed:

What are the major landscape change processes occurring in different regions of Europe?

What are the drivers of landscape change in different regions of Europe, and what is the role of EU-policies in particular?

How do landscape changes affect the provision of landscape services?

How does the implementation of conservation policies affect processes of landscape change?

Which effective strategies and future pathways can be followed to conserve valuable cultural landscapes?

The thesis consists of an introductory chapter, five chapters each addressing one of the research questions, and a concluding synthesis: putting the findings together and indicating their potential significance for research and policy. The first chapter introduces the theoretical framework, which focusses on the benefits (goods and services) that landscapes provide, satisfying human demands directly or indirectly. The framework recognises the institutions, the policies (indirect drivers), as well as natural and anthropogenic drivers of landscape change. The five central chapters have each been submitted to international peer reviewed scientific journals, three of which have been accepted, and one has been revised and resubmitted.

Research question Q1, ‘What are major landscape changes occurring in different regions of Europe?’ is addressed by interviewing 437 farmers in six selected study areas in Denmark, the Netherlands, Austria, Greece and Romania (Chapter 2). The aim of this survey was to acquire a better understanding of farmer’s decision making, the environmental conditions and the landscape change processes taking place. The focus is on intensification and extensification processes in the case-study areas and regional similarities and differences. A statistical analysis of land use intensity was carried out on the basis of the interviews.

Research question Q2, ‘What are the drivers of landscape change in different regions of Europe, and what particularly are the role of EU-policies?’, discusses the factors and drivers of change in a meta-study of six countries (Chapter 3). This study is based on stakeholder’s interpretations of change processes, using Fuzzy Cognitive Mapping. Groups of landscape experts participated in five workshops to jointly construct a cognitive map of landscape change processes over the past 25 years. The study examines in particular the storylines of the processes of landscape change. Two cases of Mediterranean and Boreal landscapes, are detailed.

Question Q3, ‘How do landscape changes affect the provision of landscape services?’ is addressed in Chapter 4, and discusses five European case studies with regard to changes in landscape services. The analysis is based on observed landscape changes by comparing maps for periods of up to 25 years. The changes were interpreted in terms of the consequences for landscape services, and related to European policies of landscape change.

Question Q4: ‘How does the implementation of conservation policies affect processes of landscape change?’ is discussed in Chapter 5 through focus on landscape governance. The transposition of European policy is assessed using the case of the Habitats Directive in four countries: Denmark, Greece, The Netherlands and Romania. It is assessed how legislation is locally translated and how this ‘fits’ the national governance system.

The last Question, Q5: ‘Which effective strategies and future pathways can be followed to conserve valuable cultural landscapes?’ is addressed in Chapter 6 on Mediterranean landscape change. Two ‘iconic’ Greek and Italian cultural olive yard landscapes were compared. Both landscapes have a centuries-old farming system. Long-term data sets on landscape change (exceeding 100 years) were combined with map data, interviews and literature, to discuss the characteristics of cultural landscape management, opportunities and potential risks for the future of these cultural landscapes.

The final chapter, Chapter 7, reflects on the results and presents the conclusions of the previous chapters, and on the scientific and societal significance of the thesis as a whole. It is concluded that the landscape in Europe is permanently changing as a result of complex interacting drivers. Policy has been one of the important drivers, but the landscape changes that have taken place are the outcome of various economic drivers and policies. The paradox is that the intentions of different European and regional spatial policies have been ambitious with regard to rural development, environmental quality, conservation of natural habitats and cultural heritage. In the end however, the complex interactions among direct and indirect drivers led to unintentional changes negatively affecting landscape value, resulting in land degradation, loss of cultural values and biodiversity. In other words, dominant drivers of landscape change (global economy, European policies) resulted in an outcome of landscapes that are preferred by the majority of the agricultural and forest sector, but otherwise no specific stakeholders were targeted, an outcome which was not envisaged by the policies.

Without efficient allocation of land resources and failing to regulate sustainable use, the landscape services are declining One approach to meet the diverse demands for landscape services is to focus on the provision of multiple benefits, using a multifunctional land use approach. The assumption thereby is that a multifunctional landscape has all aspects of a sustainable, liveable and biodiverse landscape.

The case studies landscapes in this thesis are characterised by different approaches that differ in multifunctionality: the marginal areas in southern Europe are less embedded in the global economy, and demonstrate high multifunctionality. Denmark and The Netherlands show typical ‘lowland agriculture’, that are weakly multifunctional. The Eastern European landscape cases in Romania and Estonia have higher multifunctionality, but the opportunities for change towards multifunctionality are less than in Western Europe. The opportunities are mostly dictated by environmental conditions, in particular the marginality of land, and the economy. Farming in these regions may have been profitable in the past, but abandonment is looming if no measures are taken to counteract economic driving forces.

The cultural landscapes such as in Lesvos and Portofino are particularly highly multifunctional. These old social systems are in decline: landscapes have deteriorated and changed since they have not been well maintained. The discontinuance of traditional management has occurred due to ageing populations, a lack of labour, skills and high costs. If iconic cultural landscapes are to be preserved for the future, deterioration must be halted. Traditional knowledge, skills and techniques are key for maintaining valuable cultural landscapes, such as in Italy and Greece, but also cultural landscapes in Western Europe like England or France, or traditional landscapes in Hungary or Poland. Solutions must be found to preserve the knowledge and traditions of landscape management, but also funds and labour are required to maintain these landscapes.

European landscapes have been permanently changing as a result of complex interacting drivers. Policy is one of the important drivers, but the landscape changes that take place are not the outcome of ‘a’ policy which steers the landscape development, but as the outcome of globalisation, economic drivers and policies; mostly the CAP, Rural Development Plan (RDP) and national forest policies which affect to a large measure the landscapes. There is no European policy for landscapes: landscape is not a prerogative of the EU.

Therefore, a tailor-made approach is essential for European policies implemented in each member state, taking into account the structure and functioning of existing national institutions, without losing sight of the overall aims of the policy. This requires input from the recipient countries in designing regulations, adapting them to existent institutions and modifying historical and current practices.

Holmes’ framework for changing modes of occupancy (use of rural space) has been used, whereby landscape transitions are considered the result of a changing balance between societal consumption, conservation and production. Landscapes where (agricultural or forestry) production is less dominant, may allow for more multifunctional policies that counterbalance the dominant position of production. Most countries do not have policies that fill the ‘gap’ of multifunctional landscape management. Gaps exist for landscapes not subject to Natura 2000, high nature value farming areas, outside urban zones, locations not affected by the Water Framework Directive or national forest policies, or those insufficiently covered at present by effective planning for multifunctional land use.

Existing (sectoral) schemes need to be re-examined with respect to multifunctionality. Potential multifunctional impacts should be considered in policymaking, e.g. payment schemes in the CAP or in Natura 2000, and about appropriate target areas for measures. Making more funds from CAP and RDP available for multifunctional land use could lead to more land sharing.

Landscapes, particularly iconic cultural landscapes, can benefit from mechanisms that allow the costs incurred by lower agricultural production to be covered. Payments for regulating and cultural services could be integrated in funding programs, e.g. through better targeting of Agri-Environment Schemes (AES) at smaller farmers in these valuable landscapes. Funding schemes should ensure that small, multifunctional farmers particularly in need support benefit. Better use must also be made of the added value potential of multifunctional effects. Increased multifunctionality would benefit the attractiveness of the countryside for residence, recreation and tourism.

Countries implement policies differently, but key success factors for multifunctional landscapes are the existence of locally- appropriate institutions that implement multifunctional policies. Building of new institutions can be time consuming and requires staff development.

Policy instruments on their own may be insufficient to harmonise the different aims of multifunctionality. Despite the AES, biodiversity and landscape quality is declining. The domination of some functions requires interventions and choices about trade-offs to be made (Arts et al. 2017). Given the dominant power of globalisation and European markets, payment for landscape services alone is ineffective, requiring additional incentives for the valorisation of these services, and to stimulate multifunctionality. Regional integrative approaches could be supported, with positive examples provided in the cases of alternative funding schemes, and how obstructions for such experiments can be tackled.

Finally, stakeholder involvement in landscape governance appears promising as a way to better meet the socio-ecological context within a landscape, provided that stakeholders address different scale levels. This requires a dynamic process to mobilise stakeholders, and flexibility of the government towards negotiations and conflict management at the landscape level. In particular, these last issues can be decisive for successful landscape governance. Different landscape governance arrangements are currently being tested in Europe which demonstrate new avenues. Notwithstanding some successful stakeholder involvement in landscape management, there are also challenges: in all such processes, there is a risk that collaboration results in power inequalities that affect the outcome, or may give certain groups more benefits than others, which may make the process unsustainable. It remains, therefore, important that the concept of multifunctional landscapes is integrated in existing legislation and regulations, and further integrated into land-related policies.

On the role of soil organic matter for crop production in European arable farming
Hijbeek, Renske - \ 2017
University. Promotor(en): Martin van Ittersum, co-promotor(en): Hein ten Berge. - Wageningen : Wageningen University - ISBN 9789463436632 - 211
soil fertility - soil fertility management - soil management - soil conservation - organic matter - soil organic matter - nitrogen - nitrogen fertilizers - green manures - manures - straw - soil carbon sequestration - cover crops - crop yield - yields - meta-analysis - food security - europe - drivers - barriers - bodemvruchtbaarheid - bodemvruchtbaarheidsbeheer - bodembeheer - bodembescherming - organische stof - organisch bodemmateriaal - stikstof - stikstofmeststoffen - groenbemesters - mest - stro - koolstofvastlegging in de bodem - dekgewassen - gewasopbrengst - opbrengsten - meta-analyse - voedselzekerheid - europa - chauffeurs - barrières

The aim of this thesis was to improve understanding of the role of organic inputs and soil organic matter (SOM) for crop production in contemporary arable farming in Europe. For this purpose, long-term experiments were analysed on the additional yield effect of organic inputs and savings in mineral fertiliser. In addition, a farm survey was conducted to find drivers and barriers for the use of organic inputs and to assess if arable farmers in Europe perceive a deficiency of SOM.

The findings in this thesis suggest that at least on the shorter term, on average, there seems to be no immediate threat from a deficiency of SOM to crop production in arable farming in Europe. The long-term experiments showed that with sufficient use of only mineral fertilisers, on average, similar yields could be attained over multiple years as with the combined use of organic inputs and mineral fertiliser. This was reflected in the farm survey, in which a large majority of farmers indicated not to perceive a deficiency of SOM. Analysis of long-term experiments also showed that more mineral fertiliser N was saved when using farmyard manure at high N rates (with mineral fertiliser application) than at low N rates (without mineral fertiliser application), based on comparisons at equal yield.

Specific crops and environments did benefit from organic inputs and more SOM in terms of crop production. Long-term experiments showed that organic inputs give benefit to crop production in wet climates and on sandy soils. In addition, farmers perceived a higher deficiency of SOM on steep slopes, sandy soils, wet and very dry climates. The additional yield effect of organic inputs was significant for potatoes. More in general, farmers who cultivated larger shares of their land with specialized crops (including potatoes, sugar beets, onions and other vegetables) than cereals perceived a higher deficiency of SOM. It seems that while the functions of SOM can be replaced with technical means to a large extent (e.g. tillage, use of mineral fertilisers), there are limits to this technical potential when environmental conditions are more extreme and crops are more demanding.

The farm survey revealed that farmers perceive a trade-off between improved soil quality on the one hand and increased pressures from weeds, pests and diseases and financial consequences on the other hand when using organic inputs. If policies aim to stimulate the maintenance or increase of SOM, more insight is needed into the conditions that regulate the pressures of weeds, pests and diseases in response to organic inputs. Financial consequences (at least on the short term) should also be accounted for. More importantly however, benefits from SOM for crop production cannot be taken for granted. Only in specific situations such benefits will exist. If European policies on SOM aim to include benefits for crop production, focus should be on areas with more extreme environmental conditions (very dry or wet climates, steep slopes, sandy soils), or cropping systems with more specialized or horticultural crops rather than cereals.

The role of Culex pipiens mosquitoes in transmission of West Nile virus in Europe
Vogels, Chantal B.F. - \ 2017
University. Promotor(en): Marcel Dicke, co-promotor(en): Sander Koenraadt. - Wageningen : Wageningen University - ISBN 9789463436151 - 211
culex pipiens - mosquito-borne diseases - west nile virus - disease transmission - disease vectors - vector-borne diseases - europe - ziekten overgebracht door muskieten - west-nijlvirus - ziekteoverdracht - vectoren, ziekten - ziekten overgebracht door vectoren - europa

West Nile virus (WNV) is maintained in a natural transmission cycle between mosquito vectors and bird hosts. However, mosquitoes can also transmit WNV to mammals, such as humans and horses, which may result in disease. In Europe, such cases of WNV disease are yearly recurring in southern and central Europe, but have not been detected in northern Europe. The absence of WNV outbreaks in northern Europe may be explained by lowered vector competence of the main vector for WNV: the northern house mosquito, Culex (Cx.) pipiens. The aim of this thesis was, therefore, to investigate the role of Cx. pipiens mosquitoes in transmission of WNV in Europe, in order to understand differences in WNV circulation between northern and southern Europe.

The species Cx. pipiens consists of two biotypes, pipiens and molestus, which can form hybrids. Both biotypes and their hybrids are morphologically identical but differ in their behaviour, which may have consequences for WNV transmission. In this thesis, the Cx. pipiens biotype composition was investigated in The Netherlands, and more broadly at the European scale. These studies revealed that both biotypes and their hybrids are present throughout The Netherlands, and that there is a shift towards relatively more biotype pipiens mosquitoes at northern latitudes in Europe. The next step was to assess vector competence of these northern European biotypes and their hybrids, and to make a direct comparison with vector competence of a southern European population. Both biotypes and their hybrids originating from The Netherlands are competent vectors for WNV. Interestingly, no differences in vector competence were found between a Dutch and Italian biotype pipiens population. However, both studies revealed that low temperatures of 18 °C are an important limiting factor for WNV transmission. A more in-depth study on the effects of WNV on the host-seeking behaviour of biotype pipiens mosquitoes revealed that WNV infection reduces the host-seeking response towards host odour, but that other fitness parameters (e.g. flight activity, blood-feeding, and survival) are not affected. When results from the biotype composition and vector competence studies were included in a newly developed R0 model, it becomes clear that biotype pipiens is the main contributor to WNV transmission.

The results presented in this thesis show that the Cx. pipiens biotypes and their hybrids are present throughout The Netherlands, and that they can transmit WNV under favourable climatic conditions. The absence of WNV outbreaks in northern Europe can most likely be explained by low temperature which has a negative effect on mosquito abundance, vector competence, and the duration of the infectious period. When considering the outcomes of this thesis in the light of climate change, northern European countries such as The Netherlands should be prepared for future WNV transmission.

Adding value through health claims: an empirical analysis of the Italian yogurt market
Bimbo, Francesco - \ 2017
University. Promotor(en): Alfons Oude Lansink, co-promotor(en): Alessandro Bonanno. - Wageningen : Wageningen University - ISBN 9789463434508 - 130
milk products - yoghurt - food products - health foods - business economics - consumer preferences - nutrition labeling - italy - europe - melkproducten - voedselproducten - gezondheidsvoedsel - bedrijfseconomie - consumentenvoorkeuren - etiketteren van voedingsmiddelen - italië - europa

In recent years policymakers have aimed to increase the general awareness regarding the link between diet and health, providing food companies with an opportunity to add health-enhancing features in order to differentiate their products. The European market of these products, referred to here as functional foods, is regulated according to the European regulation 1924/2006 on nutrition and health claims on foods.

Even though the European functional foods’ market has grown steadily over the last 20 years, more than 3 out of 4 new functional products are withdrawn from the market within two years from launch. Indeed, firms have to overcome three main obstacles to market health-enhancing products successfully. First, consumer-related factors, such as the heterogeneity of consumer acceptance of, and preferences for, new functional products; second, firms' difficulties in selecting the optimal attribute profiles to meet consumer demand for health features and; third, firms' difficulties to target consumers with a high enough willingness to pay to ensure the profitability of those investments needed to develop and market functional products.

The general objective of this thesis is to assess quantitatively the implicit price of health claims as well as to generate new knowledge that will inform firms on how to target consumers with higher WTP for functional products.

This thesis uses the Italian yogurt market as a case study for three reasons. First, yogurt is considered intrinsically healthy and it is one of the most credible carriers of functional ingredients: the category of fermented functional dairy accounts for nearly 43 per cent of the total functional products’ market. Second, among European countries, Italy saw the launch of the highest number (592) of new healthy products in the period 2005-2009; the majority of the new products introduced were functional yogurts benefiting digestive health (336), the immune system (99) and cardiovascular health (65). Third, the Italian yogurt market is characterized by a high level of differentiation with respect of health attributes, with manufacturers offering a variety of products carrying health claims, appearing suitable to analyze the problem at hand.

The results of this thesis show that in the Italian yogurt market the implicit prices of “risk reduction” claim is higher than that of “general function” ones (respectively, +222.6% vs +85.5% of the baseline alternative’s price in the case of cholesterol reduction health claim), and in three out of four cases, health claims supported by familiar brands have higher implicit price than those supported by less-familiar ones. Those results confirm findings collected in the systematic literature review which highlights a consensus that claims supported by familiar brands as well as “risk reduction” (vis-à-vis “general function”) ones increase consumers’ acceptance of functional dairy products. The results also point out that “natural” and “organic” claims lead to implicit prices which are (approximately) +46.6% and +102.0% over the price of the baseline alternative, comparable to those of some of the health claims. Other results indicate that manufacturers operating in the Italian yogurt market investing in credence attributes (health claims, organic and natural) gain the ability to target consumers with higher WTP by including two or more products carrying credence attribute in their portfolio. Lastly, the findings of this thesis reveal that consumers’ body image dissatisfaction, along with not reading food labels and lower knowledge about leading functional yogurt brands, are associated with lower number of functional yogurt packages purchased by Italian yogurt consumers using a virtual shelf setting.

National Reference Laboratories RIKILT Wageningen University & Research : annual report 2016
Leeuwen, S.P.J. van; Mol, J.G.J. ; Lee, M.K. van der; Gerssen, A. ; Lasaroms, J.J.P. ; Sterk, S.S. ; Raamsdonk, L.W.D. van; Jong, J. de; Scholtens-Toma, I.M.J. ; Alewijn, M. ; Weesepoel, Y.J.A. ; Ginkel, L.A. van; Meijer, Nathan ; Noordam, M.Y. - \ 2017
Wageningen : RIKILT Wageningen University & Research (RIKILT Report 2017.007) - 49 p.
reference standards - laboratories - food legislation - europe - annual reports - food safety - food quality - feeding standards - referentienormen - laboratoria - voedingsmiddelenwetgeving - europa - jaarverslagen - voedselveiligheid - voedselkwaliteit - voedingsnormen
National Reference Laboratories (NRLs) are part of the system responsible for the control and enforcement of EU food and feed law. RIKILT Wageningen University & Research has been designated as the NRL for twelve subjects. The tasks of a NRL depend on its research field. This report gives an overview of the activities performed by all of RIKILT's NRLs in 2016.
Sustaining dairy
Villarreal Herrera, Georgina - \ 2017
University. Promotor(en): Han Wiskerke, co-promotor(en): Jan Willem van der Schans. - Wageningen : Wageningen University - ISBN 9789463431545 - 331
dairy farming - dairy farms - agricultural society - economic sectors - agricultural sector - sustainable agriculture - sustainability - netherlands - great britain - western europe - europe - melkveehouderij - melkveebedrijven - agrarische samenleving - economische sectoren - landbouwsector - duurzame landbouw - duurzaamheid (sustainability) - nederland - groot-brittannië - west-europa - europa

Dairy in Europe has undergone many changes in the last few years—the abolition of milk production quotas being a fundamental one. This study explores these changes in relation to the sustained social and environmental viability of the sector and how dairy processors' sustainability programs are a part of that.

Regime change as outlined in transition theory enhanced through a sociological approach on actors informed this research. More specifically, the notion of obligatory passage points was used to explore the mechanisms through which dominant actors make certain actions mandatory and reify their status as indispensable. The thesis consists of three case studies: the dairy sectors in the Netherlands, Ireland and the United Kingdom. The cases trace the evolution of all sectors since the post-war era, outlining the dominant logic that has guided its development. The sustainability programs of three dairy processors—located in each of the case countries—are also part of the analysis. Data was collected through document analysis and semi-structured interviews.

The analysis shows that the post-war logic based on the increase of scale and intensification of dairying has continued to shape the development of the sector through today. While the visible impacts of intensive dairy have led to adaptations to the dominant rules and practices, these changes have not been fundamental in nature. The analysis of dairy processors and their sustainability programs revealed that these programs can be an additional tool for compliance to legal standards and the alleviation of pressing societal concerns. However, processors address social and environmentally relevant dairy-related challenges when an effective link to profit can be established. These programs have been unable to ensure that the dairy sector operates within established environmental limits and societal expectations, while providing a stable livelihood for farmers.

This research contributes to the understanding of sustainability (agri-food) transitions by identifying the mechanisms through which the regime adapts to the shifting environment and dominant actors strive for their own continuity. It also adds to the debate about the role that incumbent actors can have in sustainability transitions—their involvement is important but they are unable to guide such processes. This study advances the empirical ground in sustainability transition studies by focusing on systems in which change is less likely to be technologically driven and where social change plays a larger role. Finally, this thesis connects past development, current challenges, and present engagement in a discussion about the future development of the dairy sector; this adds to the further conceptualization of the complexity and co-evolutionary nature of sustainability transitions.

Overview of the international fishing activities on the Dogger Bank : update with Dutch, British, Danish, German, Belgian, Swedish and French data for 2010-2015
Hamon, Katell G. ; Hintzen, Niels T. ; Oostenbrugge, Hans J.A.E. - \ 2017
Wageningen : Wageningen Economic Research (Wageningen Economic Research memorandum 2017-050) - 35
fisheries - marine animals - fishery management - north sea - population dynamics - europe - cost benefit analysis - visserij - zeedieren - visserijbeheer - noordzee - populatiedynamica - europa - kosten-batenanalyse
This report is an update of the data and analysis on the value of the fishing activities of the Dutch, British, Danish, German, Belgian, Swedish and French fishing fleets on the proposed closed areas on the Dogger Bank. The effort, value and landings are presented for a five-year period (2010-2015) and show large variations over the last years, driven mainly by fishing opportunities for plaice for the Dutch and British fleets and sandeel for the Danish and German fleets.
Feiten en cijfers vergroening GLB
Doorn, Anne van; Smidt, Rob - \ 2017
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2795) - 19
landbouwbeleid - monitoring - ecologie - europa - agricultural policy - ecology - europe
The greening of the European common agricultural policy has started in 2015. This report
present facts and figures about two years of greening.
Knowledge production at boundaries : an inquiry into collaborations to make management plans for European fisheries
Stange, Kari - \ 2017
University. Promotor(en): Jan van Tatenhove, co-promotor(en): Judith van Leeuwen. - Wageningen : Wageningen University - ISBN 9789463430623 - 160
fishery management - european union - stakeholders - european union countries - fishery policy - multi-stakeholder processes - knowledge - knowledge transfer - environmental policy - fisheries - companies - europe - visserijbeheer - europese unie - landen van de europese unie - visserijbeleid - multi-stakeholder processen - kennis - kennisoverdracht - milieubeleid - visserij - kapitaalvennootschappen - europa

This thesis addresses how knowledge is used and produced in stakeholder-led collaborations to make long-term management plans for European fishery management. Boundary object theory is applied and developed to explain how stakeholders from the fishing industry interact with each other, and with fishery scientists and managers, in initiatives to produce management plans. Using a qualitative case study approach, two initiatives were investigated in-depth: the North Sea Advisory Council’s development of a long-term management plan for North Sea Nephrops fisheries, and the Pelagic Advisory Council’s development of a long-term management plan for a new boarfish fishery in the Northeast Atlantic. A conceptual framework with emphasis on boundary spaces was developed to analyse knowledge exchange and the interaction between actors, objects and activities. The findings point to the importance of entry points for actors to become directly involved in knowledge-production processes. Direct stakeholder engagement in management plan production created a sense of ownership of the problems identified and triggered solution-oriented ways of working. The findings highlight the multiple roles played by fishery scientists in the diverse settings where management plans for European fisheries are produced, and draw attention to the need for clear procedures to ensure that different roles are acted out transparently.

From harmful to useful algae
Blaas, Harry - \ 2017
University. Promotor(en): Carolien Kroeze. - Wageningen : Wageningen University - ISBN 9789463430357 - 117
algae - algae culture - adverse effects - nitrogen - phosphorus - rivers - eutrophication - waste water treatment - europe - algen - algenteelt - nadelige gevolgen - stikstof - fosfor - rivieren - eutrofiëring - afvalwaterbehandeling - europa

Eutrophication of coastal waters is a worldwide phenomenon. This study focuses on eutrophication in the coastal waters of Europe. Eutrophication is mainly a result of the increased transport of nutrients from watersheds by rivers to the coastal waters. Nutrient losses from watersheds are generally from agriculture, sewage, atmospheric deposition and from natural sources. In case of an overload of nutrients in the coastal waters, algal blooms may develop which increase the risk of hypoxia, fish mortality, and loss of biodiversity.

Algae can also be useful. They are increasingly considered an interesting product. For instance, micro-algae can be grow on land to produce proteins, lipids and fatty acids. Some studies indicate that micro-algae can be an important feedstock in the future for, for instance, the production of biodiesel. Moreover, macro-algae can be produced in seawater in sea farms. Macro-algae can be edible, or be used as a feedstock. By yielding macro-algae, nutrients are removed from the water, reducing coastal eutrophication.

The objective of this study is to analyse past and future trends in nutrient export by rivers to European seas with a focus on the role of algae. Three types of algae will be distinguished: (1) harmful algal blooms in coastal seas, (2) cultivation of micro-algae on land for the production of proteins, lipids and fatty acids, and (3) cultivation of multi cellular algae in seaweed farms for human consumption or other products.

To meet the objective the following research questions are addressed:

RQ1 To what extent do N and P loads exceed levels that minimize the risk of harmful algal blooms, and what are the relative shares of sources of N and P in rivers of the European Union?

RQ2 What are the potential consequences of large-scale land-based production of biodiesel from cultivated micro-algae in Europe for coastal eutrophication?

RQ3 Would it possible to cultivate and process micro-algae in a factory, and what is the environmental performance?

RQ4 To what extent can seaweed farming in combination with nutrient management in agriculture and waste water treatment reduce the potential for coastal eutrophication?

These questions are answered through model analyses. The Global NEWS (Nutrient Export from WaterSheds) model simulates river export of nutrients as function of human activities on land. It includes more than 6000 rivers worldwide. It can be used to quantify nutrient flows from land to sea for the years 1970, 2000, 2030 and 2050. For future years four scenarios have been implemented. One of these scenarios is named Global Orchestration and mostly used as a reference in this thesis. This scenario assumes a globalised world, with a reactive approach towards environmental problems. The model was released in 2010, has been validated for the years 1970 and 2000. The nutrients considered in the model are nitrogen (N) and phosphorus (P). In this thesis Global NEWS is used to calculate transport of nutrients to the coastal waters of Europe. The model uses ICEP (Indicator for Coastal Eutrophication Potential) values at the river mouths as an indicator for potentially harmful effects of nutrient enrichment. These ICEP values reflect the ratio of nitrogen and phosphorus to silica in coastal seas. A positive ICEP value indicates that nitrogen or phosphorus levels are too high, favouring conditions for potentially harmful algae to bloom.

In chapter 2 Global NEWS is used to calculate the transport of nutrients and ICEP values for 48 European rivers for the years 2000 and 2050. The model calculates a positive ICEP for 38 rivers in the year 2000, and for 34 rivers in the year 2050. This indicates that current policies are not so effective in reducing the river transport of nutrients. For polluted rivers the anthropogenic sources of the nutrients are investigated. For most rivers the dominant polluting sources are agriculture or sewage. The results indicate that a basin-specific policy is needed to reduce the risks of coastal eutrophication.

In chapter 3 the focus is on useful algae: micro-algae cultivation on land for, for instance, biodiesel production. The consequences of large-scale production of biodiesel on nutrient export by rivers to the European coastal waters are investigated. A scenario is developed assuming that a production of 0.4 billion m3 diesel from cultivated micro-algae. The cultivation is assumed to be in the open air, for instance in ponds or in closed tube systems. Such production levels would need a land surface area as large as Portugal. The Global NEWS model is used to calculate the amount of waste water from micro-algae production that will be transported to the coastal waters in this scenario. The results indicate that large-scale cultivation of micro-algae on land can become a source of nutrient pollution in rivers. In the scenario with large-scale micro-algae cultivation the future transport of nitrogen and phosphorus is considerably higher than in the reference scenario. To ensure sustainable production of biodiesel from micro-algae it is important to develop cultivation systems with low nutrient losses to the environment.

Chapter 4 presents a design of a factory for the cultivation and processing of micro-algae in an environmentally sound way. The factory does not use fossil fuels and applies maximum recycling of water and nutrients. In this factory it is possible to produce lipids, carbohydrates, proteins and minerals. The factory can be built on any piece of land, so there is no need to use arable land. The factory is independent of weather and climate. Energy can be delivered by wind mills. In this chapter an example of producing diesel in the factory is shown. In the 12 stories factory with a cultivation area of 1 hectare, 810 ton micro-algae can be cultivated per year. This is enough for the production of 386 ton diesel per year.

Chapter 5 focuses on mitigation of eutrophication in European coastal waters. A scenario is presented assuming different types of measures. The scenario first assumes that nutrient use efficiencies in agriculture are higher than today, and that waste water treatment in sewage systems is improved. In addition, it assumes that all excess N and P in coastal waters is harvested in seaweed farms producing edible macro-algae. In our scenario for 2050 there is seaweed farming in the coastal waters of 34 rivers mouths in Europe .NEWS The areas needed to ensure that ICEP values remain below 0 (low potential for coastal eutrophication) range between 0 and 952 km2 per river mouth.

This thesis shows that algae can be both harmful and useful. River export of nutrients can lead to coastal eutrophication increasing the risks of harmful algal blooms. On the other hand, micro-algae can be produced without environmental harm on land, and macro-algae can be useful in reducing pollution levels in coastal seas. This thesis could serve as a basis for environmental policies to stimulate the production of these useful algae. The methods to mitigate algal blooms and to use algae in a sustainable way in this thesis are also useful for other parts of the world.

Opportunity identification competence : explaining individual and exploring team opportunity identification by employees
Baggen, Yvette - \ 2017
University. Promotor(en): Martin Mulder, co-promotor(en): Harm Biemans; Thomas Lans. - Wageningen : Wageningen University - ISBN 9789462579682 - 182
entrepreneurship - professional competence - competences - education - businesses - small businesses - medium sized businesses - employment opportunities - netherlands - portugal - europe - ondernemerschap - vakbekwaamheid - bevoegdheden - onderwijs - bedrijven - kleine bedrijven - middelgrote bedrijven - kansen op werk - nederland - europa

Opportunities and their identification are of significant importance for competitiveness in today’s complex and turbulent business environment because they serve as a key influencing factor for new value-creation. Opportunity identification (OI) is interesting not only from the perspective of new business start-ups, but also from the perspective of employees in existing organisations. Each entrepreneurial process starts with an imagined, rudimentary idea in the mind of an individual. The further exploration and development of such opportunities by employees can lead to the realisation of all kinds of corporate entrepreneurship outcomes, such as innovation, strategic renewal, and internal or external venturing.

This dissertation reports on the capability of employees to identify opportunities, referred to as opportunity identification competence (OIC). The importance of OI by employees is widely recognised in practice, and scholars have contributed significantly to understanding what opportunities are, how opportunities come into being, and how OIC can be measured. Nevertheless, substantial research challenges still need to be addressed. More specifically, based on both entrepreneurship literature and literature on organisational learning and entrepreneurship education, three overarching research issues have been identified:

The OI process has not been fully mapped out, including the role of individuals and teams.

Defining and explaining OIC is problematic because scholars tend not to agree whether opportunities are discovered in the economic environment or created by individuals.

Existing measurements of OIC have been criticised, because most of them include self-perceptions or the recall of earlier identified opportunities.

The main goal of this thesis was to contribute to the literature by addressing these three overarching research issues. Accordingly, the central research question was: What characterises opportunity identification by employees on the individual and team level?

In the dissertation, OIC is both conceptually mapped and empirically explored. A performance instrument to measure OIC is developed and tested in higher education. As well, 12 businesses, including 234 employees in 51 teams, participated in this research project. Most companies were in the category known as small and medium-sized enterprise (SME). The participating companies have in common that they felt an urgent need for entrepreneurship as a driver of competitiveness. Furthermore, they aimed to commit and stimulate their employees to contribute to the entrepreneurial process, without having formal mechanisms or structures for doing so.

Main conclusions

In light of the central research question of this dissertation, What characterises opportunity identification by employees on the individual and team level?, the results suggest that OI deserves attention in existing businesses, both as a meaningful process leading towards new value-creation and as a relevant capability of employees. OIC is a multi-phased phenomenon consisting of two main competencies, namely business idea generation and business idea evaluation. In business idea generation, individuals generate all kinds of (business) ideas that may have the potential to become a real opportunity. In business idea evaluation, those ideas are selected that actually have potential success. Employees can have one of the competencies (business idea generation or business idea evaluation) to a greater extent, or both of them. Organisations need employees that are able to generate business ideas and employees that are able to evaluate the potential success of business ideas. The results of this thesis suggest that, just like independent entrepreneurs, employees mainly acquire such competencies by a process of learning by doing; this means that employees should become involved in entrepreneurial activities on the shop floor. Creating teams can be a solution, bringing together the competencies needed for the successful identification of opportunities. Moreover, the results suggest that the commitment of teams in the early stages of the entrepreneurial process is highly relevant, because the team cognitive framework for identifying opportunities seems more effective than the individual cognitive framework.

Taken together, at the defining, initial stage of the entrepreneurial process opportunities are identified by individuals or, preferably, by teams – in a process by which business ideas are generated and evaluated for their potential success. When studying opportunities and their identification, scholars should take into account the differences in OIC between SMEs, employees, and even within OIC itself (i.e., between business idea generation and business idea evaluation). In practice as well, these differences should be considered in the selection and management of employees, in assessing OIC and in composing teams, because teams need both business idea generators and business idea evaluators.

Fungicide evaluation to rate efficacy to control leaf late blight for the EuroBlight table Results 2006-2015
Evenhuis, A. ; Bain, R. ; Hausladen, H. ; Nielsen, B.J. ; Berg, W. van den; Schepers, H.T.A.M. - \ 2016
Lelystad : Applied Plant Research - 46 p.
solanum tuberosum - potatoes - plant pathogenic fungi - oomycetes - phytophthora infestans - fungicides - protocols - field experimentation - europe - aardappelen - plantenziekteverwekkende schimmels - oömyceten - fungiciden - protocollen - experimenteel veldonderzoek - europa
D3.5 Formalized stepwise approach for implementing logistical concepts using BeWhere and LocaGIStics : S2Biom Project Grant Agreement No. 608622
Annevelink, E. ; Elbersen, B. ; Leduc, S. ; Staritsky, I.G. - \ 2016
S2Biom - 41 p.
biomassa - modellen - databanken - hulpbronnengebruik - biobased economy - duurzaamheid (sustainability) - europa - logistiek - biomass - models - databases - resource utilization - sustainability - europe - logistics
This deliverable describes a formaliz
logistical concepts in the practical
chains and for assessing thei
BeWhere and LocaGIStics. It describes
these two logistical assessment tools
interlinked so that LocaGIStics can further refine and detail the outcomes of the
BeWhere model and that the BeWhere model can use the outcome of the
LocaGIStics model to modify their calculations if needed.
The BeWhere model supports the development of EU
develop an optimal network of biomass delivery chains
techno-economic spatial model that enables the optimal design and allocation of
biomass delivery chains (at national level) based on the minimizatio
emissions of the full supply chain taking account economies of scale, in order to meet
certain demand.
LocaGIStics is a regional assessment tool for biomass delivery chains. This tool can
support the user to design optimal biomass deliver
level and analyze in a comparative way (for different biomass delivery chains) the
spatial implications and the environmental and economic performance. It will take
account of the biomass cost
options and novel logistical concepts.
formalized stepwise approach for implementing optimal
design of national and regional
their economic and GHG performance
. the functionality of and the relation between
tools. BeWhere and LocaGIStics are closely
ked EU-wide and national strategies to
chains. The basis of this tool is a
delivery chains and networks at regional
cost-supply, the conversion and pre-treatment technology
D3.4 + D3.6: Cover report Results logistical case studies : S2Biom Project Grant Agreement n°608622
Annevelink, E. ; Gabrielle, B. ; Carozzi, M. ; Garcia Galindo, D. ; Espatolero, S. ; Izquierdo, M. ; Väätäinen, K. ; Anttila, P. ; Staritsky, I.G. ; Vanmeulebrouk, B. ; Elbersen, B. ; Leduc, S. - \ 2016
S2Biom - 23 p.
biobased economy - europa - databanken - modellen - duurzaamheid (sustainability) - hulpbronnengebruik - biomassa - logistiek - europe - databases - models - sustainability - resource utilization - biomass - logistics
The S2Biom project - Delivery of sustainable supply of non-food biomass to support a “resource-efficient” Bioeconomy in Europe - supports the sustainable delivery of nonfood biomass feedstock at local, regional and pan European level through developing strategies, and roadmaps that will be informed by a “computerized and easy to use” toolset (and respective databases) with updated harmonized datasets at local, regional, national and pan European level for EU28, Western Balkans, Moldova, Turkey and Ukraine. A case based approach was followed, where optimal logistical concepts (conceptual designs) were matched with the specific regional situation. This was done in three logistical case studies that were performed: 1. Small-scale power production with straw and Miscanthus in the Burgundy region (France); 2. Large-scale power production with straw and with residual woody biomass in the Aragon region (Spain); 3. Advanced wood logistics in the Province of Central Finland.
D3.4 + D3.6: Annex 1 Results logistical case study Burgundy : S2Biom Project Grant Agreement n°608622
Annevelink, E. ; Gabrielle, B. ; Carozzi, M. ; Staritsky, I.G. ; Vanmeulebrouk, B. ; Elbersen, B. ; Leduc, S. - \ 2016
S2Biom - 48 p.
biobased economy - biomass - sustainability - resource utilization - europe - databases - models - logistics - biomassa - duurzaamheid (sustainability) - hulpbronnengebruik - europa - databanken - modellen - logistiek
The S2Biom project - Delivery of sustainable supply of non-food biomass to support a “resource-efficient” Bioeconomy in Europe - supports the sustainable delivery of nonfood biomass feedstock at local, regional and pan European level through developing strategies, and roadmaps that will be informed by a “computerized and easy to use” toolset (and respective databases) with updated harmonized datasets at local, regional, national and pan European level for EU28, Western Balkans, Moldova, Turkey and Ukraine. In the S2Biom project the logistical case study in Burgundy was the first that was performed. In this report the assessment methods for the logistical case study are described in Chapter 2. This is followed by the set-up of the Burgundy case study in Chapter 3. In Chapter 4 the type of data needed and in Chapter 5 the actual data used are described. Then the results are presented that were obtained by the BeWhere (Chapter 6) and by the LocaGIStics model (Chapter 7). Conclusions and recommendations are given in Chapter 8.
Sustainability of livestock production systems : a comparing conventional and organic livestock husbandry
Wagenberg, C.P.A. van; Haas, Y. de; Hogeveen, H. ; Krimpen, M.M. van; Meuwissen, M.P.M. ; Middelaar, C.E. van; Rodenburg, T.B. - \ 2016
Wageningen : Wageningen University & Research (Wageningen Economic Research report 2016-035) - ISBN 9789462577480 - 121
livestock - livestock farming - organic farming - europe - literature reviews - sustainable animal husbandry - farming systems - sustainability indicators - vee - veehouderij - biologische landbouw - europa - literatuuroverzichten - duurzame veehouderij - bedrijfssystemen - duurzaamheidsindicatoren
Sustainable livestock production systems are needed to feed the larger, more urban, richer and older world population in 2050. Quantitative information about the sustainability performance of existing livestock production systems can aid the debate of which actions could be developed and implemented. Strong points of conventional and organic dairy cattle, beef cattle, pig, laying hen, and broiler production systems were identified in peer-reviewed literature for a limited number of sustainability indicators within the subjects of economy, productivity, environment, animal welfare, and public health. This study aims to identify lessons learned for sustainable livestock production.
Bouwen van duurzame, biologische systemen vereist lef en energie
Meijer, Rob - \ 2016
greenhouse horticulture - organic farming - sustainable agriculture - agricultural research - vegetable growing - europe - cooperation
Effectbeoordeling van het voorstel voor een nieuwe Europese Meststoffenverordening : analyse van de aanvoer van zware metalen de landbouwbodem en gevolgen voor vrije verhandeling van nationale meststoffen
Römkens, Paul ; Rietra, René ; Ehlert, Philip - \ 2016
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2766) - 99
kunstmeststoffen - wetgeving - dierlijke meststoffen - zware metalen - effecten - milieuwetgeving - europa - fertilizers - legislation - animal manures - heavy metals - effects - environmental legislation - europe
De Europese Commissie (COM) heeft een nieuw pakket voor de circulaire economie goedgekeurd om de overgang naar een circulaire economie in Europa te stimuleren. Oogmerk is om een stimulans en een versterking te geven aan het mondiale concurrentievermogen en duurzame economische groei en nieuwe werkgelegenheid te creëren. Het pakket stelt maatregelen voor die uitgewerkt zijn in een actieplan. Deze maatregelen sturen aan op een overgang van een lineaire economie naar een circulaire economie. Tot uitvoering van het pakket heeft COM maatregelen aangewezen. Een van de maatregelen is een herziening van de Europese meststoffenverordening (CEP, 2016) om de erkenning van organische meststoffen en op afval gebaseerde meststoffen in een geharmoniseerde markt te vergemakkelijken Deze studie onderzoekt de effecten van dit voorstel en richt zich daarbij vooral op mogelijke consequenties van de door CEP 2016 voorgestelde criteria voor meststoffen, waaronder organische en anorganische reststoffen op de gewaskwaliteit en op de belasting van de bodem met contaminanten waaronder Cadmium (Cd), Chroom (Cr), Kwik (Hg), Nikkel (Ni), Lood (Pb), en Arseen (As) en micronutriënten Koper (Cu) en Zink (Zn). Daarnaast wordt via een generieke analyse in kaart gebracht of huidige nationale meststoffen kunnen voldoen aan de door de nieuwe Europese meststoffenverordening voorgestelde eisen voor waardegevende bestanddelen en contaminanten. Tevens is onderzocht of mest en producten van mestverwerking kunnen ressorteren onder de voorgestelde CEPbepalingen (2016). Ten slotte is onderzocht of de huidige afval- en reststromen die als co-vergistingsmateriaal toegelaten zijn, aangemerkt kunnen worden als bioafval conform Richtlijn 2008/98/EG.
Family systems and fertility : fertility behaviour in Europe from a network perspective
Moenkediek, Bastian - \ 2016
University. Promotor(en): Hilde Bras; J. de Kok. - Wageningen : Wageningen University - ISBN 9789462577978 - 278 p.
demography - families - human fertility - network analysis - europe - demografie - gezinnen - menselijke vruchtbaarheid - netwerkanalyse - europa
Effect afzet mestverwerkingsproducten bij wettelijke status kunstmest of EG-meststof
Luesink, H.H. ; Postma, R. ; Smits, M.J.W. ; Schöll, L. van; Koeijer, T.J. de - \ 2016
Wageningen : LEI Wageningen UR (Rapport / LEI Wageningen UR 2016-034) - ISBN 9789462577787
regelingen - agrarisch recht - mest - kunstmeststoffen - mestverwerking - nederland - europese unie - europa - regulations - agricultural law - manures - fertilizers - manure treatment - netherlands - european union - europe
Research of the LEI Wageningen UR and NMI (Nutriënten Management Instituut) how the market for reclaimed nutrients would develop if harmonised product specifications were to apply to organic fertilisers and if substitutes for artificial fertilisers made from animal manure were to be considered legally equivalent to artificial fertiliser. The influence of the scrapping of such regulations is limited. The scale of the processing of manure into mineral concentrates will increase a little, the costs of exporting manure products will be a little lower, and the gate fees for manure processers could decline by 1-2 euros per tonne of manure (5-10%).
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