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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Meer biodiversiteit met brede groene dijken? : een verkenning van de vegetatie op de Waddenzeedijken
Loon-Steensma, Jantsje M. van; Huiskes, Rik - \ 2017
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2802) - 129
dijken - breedte - vegetatie - biodiversiteit - nederlandse waddeneilanden - nederland - duitsland - denemarken - dykes - width - vegetation - biodiversity - dutch wadden islands - netherlands - germany - denmark
In dit rapport worden de vegetaties op het buitentalud van de brede groene Waddenzeedijken in Duitsland en Denemarken vergeleken met de vegetaties op het buitentalud van de gangbare Waddenzeedijken in Nederland, met als doel om inzicht te krijgen in de mogelijke meerwaarde van het Brede Groene Dijk-concept voor biodiversiteit, en voor vegetatie in het bijzonder.
Gesellschaftliche Beteiligung in Natura 2000-Gebieten : Erfahrungen in Dänemark, England und Deutschland
Kamphorst, D.A. ; Bouwma, I.M. ; Selnes, T. - \ 2015
Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-paper 41) - 12 p.
natura 2000 - nature conservation - nature conservation policy - denmark - england - germany - natuurbescherming - natuurbeleid - denemarken - engeland - duitsland
Seit 2013 ist das Engagement der Gesellschaft für den
Erhalt der Natur ein ausdrückliches Anliegen der niederländischen
Regierung. Da Nachbarländer der Niederlande ähnliche
Bestrebungen haben, wurden mit der vorliegenden Untersuchung
deren Konzepte sowie die gewonnenen Erkenntnisse in den
folgenden drei Untersuchungsgebieten betrachtet: Exmoor
National Park (England), Naturpark Aukrug (Schleswig-Holstein,
Deutschland) und Lille Vildmose (Dänemark). Wichtige Elemente
eines erfolgreichen Projekts, dessen Zweck die Einbeziehung
der Gesellschaft ist, sind laut der Untersuchung die frühzeitige
Beteiligung örtlicher Interessenvertreter (sogenannte
Stakeholder), spannende Erzählperspektiven, gleichberechtigte
Kooperationen, der flexible Einsatz von Fördermitteln sowie die
Anwesenheit örtlicher Vermittler (Broker).
Societal involvement in Natura 2000 areas : Experiences in Denmark, England and Germany
Kamphorst, D.A. ; Bouwma, I.M. ; Selnes, T. - \ 2015
Wettelijke Onderzoekstaken Natuur & Milieu (WOt-paper 41) - 10 p.
natura 2000 - nature conservation - environmental policy - germany - denmark - england - natuurbescherming - milieubeleid - duitsland - denemarken - engeland
Since 2013, involving society in nature conservation has become an explicit ambition of the Dutch government. As neighbouring countries of the Netherlands have similar ambitions, this research reviewed the policies in these countries and the experiences gained in three study areas: Exmoor National Park (England); Naturpark Aukrug (Schleswig-Holstein, Germany) and Lille Vildmose (Denmark). The research shows that early engagement of local stakeholders, a motivating narrative, equality in cooperation, flexibility of subsidies and presence of local brokers are important elements of successful governance aimed at involving society.
Mainstream zoekt maatschappij : maatschappelijke waardering voor toekomstbestendige agrifoodsector : lessen uit Denemarken en Engeland
Bakker, H.C.M. de; Lauwere, C.C. de; Dagevos, H. ; Beekman, V. ; Meeusen, M.J.G. - \ 2015
Den Haag : LEI Wageningen UR (Report / LEI 2015-071) - ISBN 9789086157112 - 40
landbouwindustrie - landbouwsector - voedsel - voedingsmiddelen - samenleving - maatschappelijk verantwoord ondernemen - denemarken - verenigd koninkrijk - agribusiness - agricultural sector - food - foods - society - corporate social responsibility - denmark - uk
Societal appreciation is important for a future-proof agri-food sector. Connecting, communication, offering insights and activation are key to the Implementation Plan ‘Market and Society’. In this way, the top sector Agri&Food wants to arrive at a stronger public support for the food sector. This report looks beyond our borders at how societal appreciation and connection are shaped.
Meerwaarde voor vis
Zaalmink, W. ; Verweij, M. - \ 2015
Den Haag : LEI Wageningen UR (LEI publicatie 2015-035 ) - 47
visserij - nederland - belgië - denemarken - circuits - duurzaamheid (sustainability) - agro-industriële ketens - bedrijfsresultaten in de landbouw - coöperaties - elektronische handel - winkels - consumenten - handel - fisheries - netherlands - belgium - denmark - sustainability - agro-industrial chains - farm results - cooperatives - electronic commerce - shops - consumers - trade
Deze brochure beschrijft inspirerende voorbeelden van enkele niet-alledaagse afzetmogelijkheden van vis, Het doel is visserijondernemers te stimuleren tot het ontwikkelen van economisch en ecologisch rendabele visketens.
High rates of anaerobic oxidation of methane, ethane and propane coupled to thiosulphate reduction
Suarez Zuluaga, D.A. ; Weijma, J. ; Timmers, P.H.A. ; Buisman, C.J.N. - \ 2015
Environmental Science and Pollution Research 22 (2015)5. - ISSN 0944-1344 - p. 3697 - 3704.
sulfate-reducing bacteria - marine-sediments - electron-donor - sulfur cycle - aarhus bay - consumption - denmark - disproportionation - bioreactor - enrichment
Anaerobic methane oxidation coupled to sulphate reduction and the use of ethane and propane as electron donors by sulphate-reducing bacteria represent new opportunities for the treatment of streams contaminated with sulphur oxyanions. However, growth of microbial sulphate-reducing populations with methane, propane or butane is extremely slow, which hampers research and development of bioprocesses based on these conversions. Thermodynamic calculations indicate that the growth rate with possible alternative terminal electron acceptors such as thiosulphate and elemental sulphur may be higher, which would facilitate future research. Here, we investigate the use of these electron acceptors for oxidation of methane, ethane and propane, with marine sediment as inoculum. Mixed marine sediments originating from Aarhus Bay (Denmark) and Eckernförde Bay (Germany) were cultivated anaerobically at a pH between 7.2 and 7.8 and a temperature of 15 °C in the presence of methane, ethane and propane and various sulphur electron acceptors. The sulphide production rates in the conditions with methane, ethane and propane with sulphate were respectively 2.3, 2.2 and 1.8 µmol S L-1 day-1. For sulphur, no reduction was demonstrated. For thiosulphate, the sulphide production rates were up to 50 times higher compared to those of sulphate, with 86.2, 90.7 and 108.1 µmol S L-1 day-1 for methane, ethane and propane respectively. This sulphide production was partly due to disproportionation, 50 % for ethane but only 7 and 14 % for methane and propane respectively. The oxidation of the alkanes in the presence of thiosulphate was confirmed by carbon dioxide production. This is, to our knowledge, the first report of thiosulphate use as electron acceptor with ethane and propane as electron donors. Additionally, these results indicate that thiosulphate is a promising electron acceptor to increase start-up rates for sulphate-reducing bioprocesses coupled to short-chain alkane oxidation.
Changes in Pig Production in China and Their Effects on Nitrogen and Phosphorus Use and Losses
Bai, Z.H. ; Ma, L. ; Qin, W. ; Chen, Q. ; Oenema, O. ; Zhang, F.S. - \ 2014
Environmental Science and Technology 48 (2014)21. - ISSN 0013-936X - p. 12742 - 12749.
food-chain - integrated assessment - ammonia emission - nutrient flows - agriculture - consumption - management - performance - excretion - denmark
China's pig production has increased manifold in the past 50 years, and this has greatly affected the nitrogen and phosphorus use and losses in the pig production sector. However, the magnitude of these changes are not well-known. Here, we provide an in-depth account of the changes in pig production-N and P use and total N and P losses in the whole pig production chain during the period 1960-2010-through simulation modeling and using data from national statistics and farm surveys. For the period of 2010-2030, we explored possible effects of technological and managerial measures aimed at improving the performances of pig production via scenario analysis. We used and further developed the NUtrient flows in Food Chains, Environment and Resources use (NUFER) model to calculate the feed requirement and consumption, and N and P losses in different pig production systems for all the years Between 1960 and 2010, pig production has largely shifted from the so-called backyard system to landless systems. The N use efficiencies at fattener level increased from 18 to 28%, due to the increased animal productivity. However, the N use efficiencies at the Whole system level decreased from 46 to 11% during this period, mainly due to the increase of landless pig farms, which rely on imported feed and have no land-base for manure disposal. The total N and P losses were 5289 and 829 Gg in 2010, which is 30 and 95 times higher than in 1960. In the business as usual scenario, the total N and P losses were projected to increase by 25 and 55% between 2010 and 2030, respectively. Analyses of other scenarios indicate that packages of technological and managerial measures can decrease total N and P losses by 64 and 95% respectively. Such improvements require major transition in the pig production sector, notably, in manure management, herd management, and feeding practices.
Trilateral Wadden Sea World Heritage Foundation, Exploring added value, strategy and organisation
During, R. ; Coninx, I. ; Simeonova, V. - \ 2014
Wageningen : Alterra, Wageningen-UR (Alterra-rapport 2505) - 71
waddenzee - cultuurlandschap - natuurbescherming - governance - nederland - duitsland - denemarken - wadden sea - cultural landscape - nature conservation - netherlands - germany - denmark
Once the Danish part of the Wadden Sea has been accepted for the UNESCO World Heritage List (expected in 2014), the whole of the Wadden Sea will then be enlisted and this offers new opportunities and obligations for integrative and integral management to safeguard its Outstanding Universal Value. Actually a new transnational foundation is discussed that can promote and support the conservation of the Wadden Sea World Heritage Property and promoting its brand. This research explores the potential added values of such a foundation, by referencing it against the actual institutional landscape of Wadden Sea governance. Six added value components have been designated. Using World Heritage as an asset for sustainable socio-economic development. Achieving consistency in branding and deploying the rights of the UNESCO and Wadden Sea World Heritage logo’s. Involving private investors from the tourist industry, and the local and regional industry. Adequate involvement of NGO’s that play an important role in the development of collaborative structures that address the needs and obligations of the management of the world heritage site. Acquiring and redistributing funds to ensure that the Wadden Sea becomes an integral entity. The foundation could use European provisions and could apply for European projects to enhance the level of trans national cooperation. These added value component have been put together in a strategic framework that focuses on financial independency, high governance performance and participative democracy regarding the world heritage site.
Appraising fertilisers: origins of current regulations and standards for contaminants in fertilisers : background of quality standards in the Netherlands, Denmark, Germany, United Kingdom and Flanders
Ehlert, P.A.I. ; Posthuma, L. ; Römkens, P.F.A.M. ; Rietra, R.P.J.J. ; Wintersen, A.M. ; Wijnen, H. van; Dijk, T.A. van; Schöll, L. van; Groenenberg, J.E. - \ 2013
Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-werkdocument 336) - 128
rioolslib - compost - bemesting - kwaliteitsnormen - verontreiniging - overheidsbeleid - vergelijkingen - nederland - denemarken - duitsland - verenigd koninkrijk - vlaanderen - sewage sludge - composts - fertilizer application - quality standards - pollution - government policy - comparisons - netherlands - denmark - germany - uk - flanders
The standards for contaminants in fertilisers in Denmark, Germany, Flanders, the Netherlands and United Kingdom, are given in the context of the proposals for new European fertiliser legislation. This EU legislation might result in generic limit values for contaminants and input lists of materials, and importantly specific waste materials, per categories of fertiliser. With the national and European targets of recycling and energy recovery, the sustainable use of waste materials as fertilisers is becoming more and more important. A revision of the fertiliser legislation is therefore not only relevant for agriculture but also for the waste and energy sector. Compared to the surrounding countries the limit values in the Netherlands are low for heavy metals and high for organic contaminants. The origin of the limit values, the basic protection policies and the risk analysis have been traced especially for the Netherlands, and roughly for the surrounding countries. The limits for heavy metals in fertilisers in the Netherlands are based on the protection of the soil, on practice, and in case of organic contaminants, also on a risk analysis. Also in the surrounding countries, the limit values have been derived using the same basic concepts of protection and risk analysis. The differences and similarities between the basic concepts to derive limit values between the countries give a starting point for a revaluation and new limit values for fertilisers
Beleid voor ecosysteemdiensten : een vergelijking tussen verschillende EU-staten
Verburg, R.W. ; Bogaardt, M.J. ; Harms, B. ; Selnes, T. ; Oliemans, W.J. - \ 2013
Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-werkdocument 322) - 86
ecosysteemdiensten - landen van de europese unie - monitoring - projectimplementatie - overheidsbeleid - biodiversiteit - nederland - vlaanderen - duitsland - denemarken - verenigd koninkrijk - spanje - ecosystem services - european union countries - project implementation - government policy - biodiversity - netherlands - flanders - germany - denmark - uk - spain
In dit werkdocument is een verkenning uitgevoerd naar de beleidsvoorbereiding, -uitvoering en –monitoring over ecosysteemdiensten door nationale overheden in verschillende EU-lidstaten, te weten Nederland, Vlaanderen, Duitsland, Denemarken, Verenigd Koninkrijk en Spanje. Uit de verkenning blijkt dat veel landen nog bezig zijn met de beleidsvoorbereiding en dat de uitvoering vaak in gebiedsprocessen plaatsvindt. De beleidsmonitoring vindt op dit moment in geen van de onderzochte lidstaten plaats. De voornaamste lessen die Nederland mogelijk uit het buitenland kan trekken, zijn strategisch van aard. Operationele lessen zijn wel te trekken, maar zijn sterk afhankelijk van de nationale beleidsculturen. Landen zetten sterk in op het toepasbaar maken van ecosysteemdiensten, zodat het concept niet alleen een academische discussie blijft. Mainstraiming van het concept over verschillende (sectorale) beleidsvelden, verschillende overheidslagen en naar private partners is daarbij een noodzakelijke stap. Hierbij zal het nieuw te ontwikkelen beleid transparant moeten zijn, zodat duidelijk wordt wie met welke diensten wat wil bereiken
Management, regulation and environmental impacts of nitrogen fertilization in northwestern Europe under the Nitrates Directive; a benchmark study
Grinsven, H.J.M. van; Berge, H.F.M. ten; Dalgaard, T. ; Fraters, B. ; Durand, P. ; Hart, A. ; Hofman, G. ; Jacobsen, B.H. ; Lalor, S.T.J. ; Lesschen, J.P. ; Osterburg, B. ; Richards, K.G. ; Techen, A.K. ; Vertes, F. ; Webb, J. ; Willems, W.J. - \ 2012
Biogeosciences 9 (2012)12. - ISSN 1726-4170 - p. 5143 - 5160.
agriculture - losses - groundwater - balances - denmark
Implementation of the Nitrates Directive (NiD) and its environmental impacts were compared for member states in the northwest of the European Union (Ireland, United Kingdom, Denmark, the Netherlands, Belgium, Northern France and Germany). The main sources of data were national reports for the third reporting period for the NiD (2004-2007) and results of the MITERRA-EUROPE model. Implementation of the NiD in the considered member states is fairly comparable regarding restrictions for where and when to apply fertilizer and manure, but very different regarding application limits for N fertilization. Issues of concern and improvement of the implementation of the NiD are accounting for the fertilizer value of nitrogen in manure, and relating application limits for total nitrogen (N) to potential crop yield and N removal. The most significant environmental effect of the implementation of the NiD since 1995 is a major contribution to the decrease of the soil N balance (N surplus), particularly in Belgium, Denmark, Ireland, the Netherlands and the United Kingdom. This decrease is accompanied by a modest decrease of nitrate concentrations since 2000 in fresh surface waters in most countries. This decrease is less prominent for groundwater in view of delayed response of nitrate in deep aquifers. In spite of improved fertilization practices, the southeast of the Netherlands, the Flemish Region and Brittany remain to be regions of major concern in view of a combination of a high nitrogen surplus, high leaching fractions to groundwater and tenacious exceedance of the water quality standards. On average the gross N balance in 2008 for the seven member states in EUROSTAT and in national reports was about 20 kg N ha(-1) yr(-1) lower than by MITERRA. The major cause is higher estimates of N removal in national reports which can amount to more than 50 kg N ha(-1) yr(-1). Differences between procedures in member states to assess nitrogen balances and water quality and a lack of cross-boundary policy evaluations are handicaps when benchmarking the effectiveness of the NiD. This provides a challenge for the European Commission and its member states, as the NiD remains an important piece of legislation for protecting drinking water quality in regions with many private or small public production facilities and controlling aquatic eutrophication from agricultural sources.
PLEASE: een instrument om de fosfaatlekkage van een perceel naar het oppervlaktewater vast te stellen
Salm, C. van der; Schoumans, O.F. - \ 2011
Wageningen : Alterra (Informatieblad Mineralen en Milieukwaliteit 31) - 2
bodemchemie - uitspoelen - bodemtypen - fosfor - emissie - modellen - waterkwaliteit - nederland - denemarken - soil chemistry - leaching - soil types - phosphorus - emission - models - water quality - netherlands - denmark
PLEASE (Phosphorus LEAching from Soils to the Environment) berekent de fosfaatvracht van een perceel naar de perceelsloot op basis van het verloop van de fosfaatconcentratie in de bodem en de waterafvoer over het perceel en uit de verschillende bodemlagen van het perceel naar het oppervlaktewater. PLEASE is het afgelopen jaar getoetst op 14 Nederlandse en 17 Deense locaties (Dupas en van der Salm, 2010; van der Salm et al.,2011). Op deze 31 locaties waren metingen beschikbaar van de fosforfluxen naar het oppervlaktewater of van concentraties in het grondwater, de drains of het bodemvocht voor een periode van enkele jaren. De Deense locaties zijn goed vergelijkbaar met de Nederlandse percelen, maar hebben gemiddeld genomen een iets lagere fosfaattoestand in de ondergrond en zijn wat dieper gedraineerd
Evaluation of Eight Different Cephalosporins for Detection of Cephalosporin Resistance in Salmonella enterica and Escherichia coli
Aarestrup, F.M. ; Hasman, H. ; Veldman, K.T. ; Mevius, D.J. - \ 2010
Microbial Drug Resistance-Mechanisms Epidemiology and Disease 16 (2010)4. - ISSN 1076-6294 - p. 253 - 261.
spectrum beta-lactamases - molecular characterization - antimicrobial resistance - klebsiella-pneumoniae - typhimurium - animals - denmark
This study evaluates the efficacy of eight different cephalosporins for detection of cephalosporin resistance mediated by extended spectrum beta-lactamases (ESBL) and plasmidic AmpC beta-lactamases in Salmonella and Escherichia coli. A total of 138 E. coli and 86 Salmonella isolates with known beta-lactamase genes were tested for susceptibility toward cefoperazone, cefotaxime, cefpodoxime, cefquinome, ceftazidime, ceftiofur, ceftriaxone, and cefuroxime using minimum inhibitory concentration determinations and disc diffusion. The collection consisted of 84 ampicillin-susceptible, 57 ampicillin-resistant but cephalosporin-susceptible, 56 ESBL isolates and 19 isolates with plasmidic AmpC, as well as 10 ampC hyper-producing E. coli. The minimum inhibitory concentration distributions and zone inhibitions varied with the tested compound. Ampicillin-resistant isolates showed reduced susceptibility to the cephalosporins compared to ampicillin-susceptible isolates. Cefoperazone, cefquinome, and cefuroxime were not useful in detecting isolates with ESBL or plasmidic AmpC. The best substances for detection were cefotaxime, cefpodoxime, and ceftriaxone, whereas ceftazidime and ceftiofur were not as efficient. Ceftriaxone may be the recommended substance for monitoring because of some ability in separating ampC hyper-producing E. coli from ESBL and plasmidic AmpC isolates
Effects of farmers' decisions on the landscape structure of a Dutch rural region: An agent-based approach
Valbuena, D.F. ; Verburg, P.H. ; Veldkamp, A. ; Bregt, A.K. ; Ligtenberg, A. - \ 2010
Landscape and Urban Planning 97 (2010)2. - ISSN 0169-2046 - p. 98 - 110.
land-cover change - agricultural abandonment - europe - models - policy - intensification - consequences - strategies - denmark - systems
The development of rural regions is a result of multiple (spatial) interactions between socio-economic and biophysical processes. These interactions differ largely between rural regions as processes within the region are different and they also respond differently to the pressures the region is facing from outside. In particular, the diversity of farmers’ decision-making in rural regions may have an important influence on how the region responds to endogenous and exogenous processes. This response can affect the use and the structure of the landscape. The aim of this paper is to explore how future responses of farmers’ decision-making to endogenous and exogenous processes can affect the regional landscape structure. This is achieved by implementing different future scenarios in an agent-based modelling approach for a rural region in the Netherlands. The results show how the response of farming to global or regional processes either polarise or interconnect agriculture and semi-nature areas in the rural region. The results also demonstrate how different types of decision-making can influence passively or actively the structure of the landscape. The added value of including the diversity of farmers’ decision-making in regional LUCC research is discussed
How to reduce nutrient emissions from agriculture? : international workshop summary report Utrecht, 19-20 November, 2009
Berge, H.F.M. ten; Dijk, W. van - \ 2010
Wageningen : Plant Research International (Note / Plant Research International 653) - 96
landbouw - voedingsstoffen - nitraten - denemarken - duitsland - nederland - bemesting - mestbeleid - vlaanderen - agriculture - nutrients - nitrates - denmark - germany - netherlands - fertilizer application - manure policy - flanders
Aan de workshop namen vertegenwoordigers deel uit Denemarken, Vlaanderen, Duitsland, het Verenigd Koninkrijk en Nederland. Genodigden uit Frankrijk meldden zich af. Deze landen werden door de VROM en LNV aangewezen wegens de gelijkenis tussen de landbouw in (delen van) deze landen en die in Nederland; en wegens het daarmee samenhangende relatief sterk ontwikkelde mestbeleid in deze landen. Aanscherping van wetgeving zal voor bedrijven in gevoelige gebieden leiden tot inkomensderving. Vooral op een deel van de zandgronden (o.a. in Nederland, Vlaanderen, Denemarken) en scheurende kleigronden (Verenigd Koninkrijk) kan de gewenste milieukwaliteit mogelijk niet worden gehaald bij een rendabele bedrijfsvoering.
NOVANA: permanent natuur monitoren voor Deens natuurbeleid [over de grens]
Smits, M.J.W. ; Bogaardt, M.J. ; Selnes, T. - \ 2010
Landwerk 11 (2010)1. - ISSN 1567-1844 - p. 16 - 19.
natuurbescherming - monitoring - waterbeheer - overheidsbeleid - denemarken - natuurontwikkeling - nature conservation - water management - government policy - denmark - nature development
Sinds 2004 werkt de Deense overheid aan een monitoringsysteem voor het natuurbeleid en het waterbeleid. Er is zelfs een speciale organisatie voor opgezet: NOVANNA. Dit artikel biedt inzicht in het Deense natuurbeleid en hun monitoringprogramma DEVANO
Natuurgericht milieubeleid voor Natura 2000-gebieden in Europees perspectief: een verkenning
Doorn, A.M. van; Paulissen, M.P.C.P. - \ 2009
Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-werkdocument 163) - 52
luchtkwaliteit - ammoniak - bodemwater - verdroging - milieubeleid - vergelijkingen - denemarken - engeland - nederland - natuurgebieden - air quality - ammonia - soil water - desiccation - environmental policy - comparisons - denmark - england - netherlands - natural areas
In dit werkdocument is verkend in hoeverre de (milieu)druk op natuur in andere gebieden binnen de EU overeenkomt met die in Nederland. Met name verdroging en ammoniak zijn onder de loep genomen. Voor twee casusgebieden met vergelijkbare milieudruk als in Nederland is het bestaande of te ontwikkelen beleid om milieucondities voor natuur te verbeteren onderzocht. Wat betreft ammoniak is de beleidscontext in Denemarken verkend; voor verdroging richt de analyse zich op Zuidoost- Engeland.
Natuurbeheer in internationaal perspectief : blik op Nederland, Denemarken en Engeland
Smits, M.J.W. ; Bogaardt, M.J. ; Selnes, T. - \ 2009
Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-rapport 103) - 98
overheidsbeleid - regelingen - vergelijkingen - denemarken - engeland - nederland - natuurbeheer - agrarisch natuurbeheer - government policy - regulations - comparisons - denmark - england - netherlands - nature management - agri-environment schemes
In dit onderzoek is natuurbeheer zoals in Nederland georganiseerd binnen Programma Beheer, vergeleken met regelingen voor natuurbeheer in Engeland en Denemarken. We vergelijken de regelingen zelf, de ambities, het bestuurlijk proces, de kwaliteitsborging (m.n. data verzamelen en monitoring), en de wijze van evalueren. De verschillen en overeenkomsten in werkwijze tussen Nederland, Engeland en Denemarken worden geanalyseerd. Vervolgens worden lessen getrokken voor Nederland. Trefwoorden: natuurbeheer, Programma Beheer, evalueren, kwaliteitsborging
Ensemble modelling of nutrient loads and nutrient load partitioning in 17 European catchments
Kronvang, B. ; Behrendt, H. ; Andersen, H.E. ; Arheimer, B. ; Barr, A. ; Borgvang, S.A. ; Bouraoui, F. ; Granlund, K. ; Grizzetti, B. ; Groenendijk, P. ; Schwaiger, E. ; Hejzlar, J. ; Hoffmann, L. ; Johnsson, H. ; Panagopoulos, Y. ; Porto, A. Lo; Reisser, H. ; Schoumans, O.F. ; Anthony, S. ; Silgram, M. ; Venohr, M. ; Larsen, S.E. - \ 2009
Journal of Environmental Monitoring 11 (2009)3. - ISSN 1464-0325 - p. 572 - 583.
source apportionment - agricultural areas - river-basins - nitrogen - validation - denmark - losses - lakes
An ensemble of nutrient models was applied in 17 European catchments to analyse the variation that appears after simulation of net nutrient loads and partitioning of nutrient loads at catchment scale. Eight models for N and five models for P were applied in three core catchments covering European-wide gradients in climate, topography, soil types and land use (Vansjø-Hobøl (Norway), Ouse (Yorkshire, UK) and Enza (Italy)). Moreover, each of the models was applied in 3–14 other EUROHARP catchments in order to inter-compare the outcome of the nutrient load partitioning at a wider European scale. The results of the nutrient load partitioning show a variation in the computed average annual nitrogen and phosphorus loss from agricultural land within the 17 catchments between 19.1–34.6 kg N ha-1 and 0.12–1.67 kg P ha-1. All the applied nutrient models show that the catchment specific variation (range and standard deviation) in the model results is lowest when simulating the net nutrient load and becomes increasingly higher for simulation of the gross nutrient loss from agricultural land and highest for the simulations of the gross nutrient loss from other diffuse sources in the core catchments. The average coefficient of variation for the model simulations of gross P loss from agricultural land is nearly twice as high (67%) as for the model simulations of gross N loss from agricultural land (40%). The variation involved in model simulations of net nutrient load and gross nutrient losses in European catchments was due to regional factors and the presence or absence of large lakes within the catchment.
Towards the semiclosed greenhouse
Hemming, S. - \ 2009
In: Energy in focus - From Kyoto to Copenhagen Aarhus, Denmark : AgroTech, Institute for Agri Technology and Food Innovation - p. 6 - 7.
kassen - energiegebruik - denemarken - kastechniek - energiebesparing - duurzame energie - greenhouses - energy consumption - denmark - greenhouse technology - energy saving - sustainable energy
What can we do right now to reduce the consumption of fossil fuels in the greenhouse sector? What technologies should we concentrate on in the future? Researchers, consultants and technology enterprises working with the greenhouse sector have tried to answer these questions in collaboration with the sector.
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