Developing a methodology for a species-based and spatially explicit indicator for biodiversity on agricultural land in the EU
Overmars, K.P. ; Schulp, C.J.E. ; Alkemade, R. ; Verburg, P.H. ; Temme, A.J.A.M. ; Omtzigt, N. ; Schaminee, J.H.J. - \ 2014
Ecological Indicators 37 (2014)Part A. - ISSN 1470-160X - p. 186 - 198.
farmland bird populations - use intensity - europe - landscapes - intensification - diversity - nitrogen - impacts - policy - consequences
In Europe agricultural areas are of great importance to biodiversity conservation. One of the aims of the Common Agricultural Policy (CAP) after 2013 is to avoid additional loss of agriculture-related biodiversity. Farmland biodiversity is a public good that provides ecosystem services necessary for the sustainability of agriculture itself as well as for a sustainable environment as a whole. To evaluate policies such as the CAP and to monitor the development of biodiversity in agricultural areas, specifically designed indicators are needed. Current EU-level indicators of agricultural biodiversity are often limited to a specific species group, for example the group of farmland birds, and are not designed for evaluation of future policies. This study presents a methodology for a new indicator that is targeted specifically at biodiversity in agricultural areas, considering a large variety of species and focussing on policy. The methodology combines maps of the potential occurrence of 132 relevant species (plants and vertebrates) on a 50 km grid, with detailed information (1 km grid) on the influence of environmental pressures on these species. A first indicator map on a 1 km grid for the EU is provided, based on available data. This map shows great variety in the state of the biodiversity of agricultural areas in the EU. Generally speaking, biodiversity in agricultural areas in the south and east of the EU is in a better state than in the west and north. However, spatial variability is high between and even within regions. The presented indicator may be used to explore the dynamics of biodiversity following policy interventions, using the biodiversity map or by modelling the effect of policies on the environmental pressures that form the basis of the indicator.
De actualiteit van F.W. Raiffeisen
Dijk, G. van - \ 2010
In: Voorbij de crisis / ten Hooven, Marcel, van Dijk, Jan-Jacob, Omtzigt, Pieter, Prij, Jan, Pieper, Hein, Amsterdam : Boom - ISBN 9789085069171 - p. 231 - 238.
Do biodiversity patterns in Dutch wetland complexes relate to variation in urbanisation, intensity of agricultural land use of fragmentation
Vermaat, J.E. ; Goosen, H. ; Omtzigt, N. - \ 2007
Biodiversity and Conservation 16 (2007)12. - ISSN 0960-3115 - p. 3585 - 3595.
plant-species richness - habitat fragmentation - conservation - netherlands - vegetation - decline - management - level - area - frog
Red list species densities of birds (maximally 22 km¿2), and angiosperms (maximally 39 km¿2) were used as biodiversity indicators in 21 larger complexes of wetlands across the Netherlands. Their covariability with a range of indicators of human land use was assessed, including population, road and visitor density, area covered by agriculture, open water, forest and residential housing. Data were collected on the wetland complexes as well as for a perimeter with 10 km radius. In a principal components analysis (PCA) with all land use variables, it was found that the population-density-related complex of urbanisation, fragmentation (by roads), and intensity of fertilizer use together explained most of the variability present (i.e. the first PCA axis explained 50%), whilst land use within these complexes was second with an additional 19% and waterside recreation third with 12%. Red list bird species density did not correlate with that of angiosperms, nor with any of the indicators used. For the 13 complexes on organic peatland, we observed an increase in maximum red list angiosperm species density with the proportion of open marshland (P <0.01, r 2 > 0.55), which, in turn, was negatively and closely correlated with the first PCA axis reflecting an urbanisation gradient across the Netherlands
A simple mediation and negotiation support tool for water management in the Netherlands
Janssen, R.H.H. ; Goosen, H. ; Omtzigt, N. - \ 2006
Landscape and Urban Planning 78 (2006)1-2. - ISSN 0169-2046 - p. 71 - 84.
decision-support - resource-management - dispute resolution - collective action - gis - systems - information - design
When the stakes of stakeholders are not properly incorporated during early phases of a planning process, it may later give rise to severe conflicts. The issue of how to deal with stakeholders in regional water management has been a subject of ongoing debate in the Netherlands. This paper promotes a `platform¿ approach where stakeholders collectively attempt to develop plans for regional water management. Ideas for this platform approach are based on a review of research on groups governing common-pool resources. We argue that simple negotiation and mediation support tools can offer useful support and can serve to facilitate platform negotiations. We present a simple mediation and negotiation tool to support the early phases of such a land use planning process. The tool translates stakeholder preferences on the use of the landscape into spatially explicit value maps. Proposed plans can be evaluated and potential conflicts can be identified. The use of such a tool enables stakeholders and mediators to formulate explicitly the problems that need to be addressed in the decision-making process
Snuffelen aan Open Source
Rip, F.I. ; Omtzigt, N. - \ 2004
Agro Informatica 17 (2004)3. - ISSN 0925-4455 - p. 15 - 19.
informatietechnologie - computer software - gebruikswaarde - landbouwsector - informatica - information technology - computer software - use value - agricultural sector - informatics
Via de verschillende toepassingsgebieden in de praktijk (ontwikkelingshulp, verkoop van producten door Californische boeren, biotechnologie, geoinformatie, kantoorautomatisering, webserver, databases, besturingssysteem, webbrouwser en beleid) trachten de auteurs achter de toepasbaarheid van open source software in de agro-informatica te komen
|GIPSY Helpdesk, een digitale kennisbron ter ondersteuning van GIS-onderwijs
Kooistra, L. ; Lammeren, R.J.A. van; Rip, F.I. ; Omtzigt, N. ; Wunderink, R. ; Molendijk, M. ; Heuvel, P. van de - \ 2004
Wageningen : WUR (GIPSY-rapport 2004-4) - 35
geografische informatiesystemen - onderwijsvernieuwing - computerondersteund onderwijs - computertechnieken - onderzoeksondersteuning - computer software - kaarten - kennis - geographical information systems - educational innovation - computer assisted instruction - computer techniques - research support - computer software - maps - knowledge
|Influence of flumequine on in vivo lymphocyte proliferation in rainbow trout.
Tanck, M.W.T. ; Heijden, M.H.T. van der; Omtzigt, D.U.W. ; Boon, J.H. - \ 1995
In: Abstract 7th Int. Conf. on Diseases of Fish and Shellfish, Palma de Mallorca, Spain
|Wood gnawing in mice is not associated with open field behaviour.
Omtzigt, C.M. ; Broek, F.A.R. van den; Beynen, A.C. - \ 1992
Scandinavian journal of laboratory animal science 19 (1992). - ISSN 0901-3393 - p. 141 - 143.