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Registros recuperados: 5
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Effect of low-input habitats on biodiversity in Swiss agricultural landscapes Organic Eprints
Herzog, F.; Buholzer, S.; Derron, J.; Dreier, S.; Hofer, G.; Jeanneret, Ph.; Luka, H.; Marfurt, C.; Pfiffner, L.; Pozzi, S.; Schüpbach, B.; Spiess, M.; Walter, Th..
Effect of low-input habitats on biodiversity in Swiss agricultural landscapes.
Tipo: Conference paper, poster, etc. Palavras-chave: Biodiversity and ecosystem services.
Ano: 2003 URL: http://orgprints.org/2761/1/no%2Ddocument%2Drft.rtf
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Farm-SAFE: the process of developing a plot- and farmscale model of arable, forestry, and silvoarable economics Inra
Graves, A.R.; Burgess, P.J.; Liagre, F.; Terreaux, J.P.; Borrel, T.; Dupraz, C.; Palma, J.; Herzog, F..
Financial feasibility and financial return are two key issues that farmers and land owners consider when deciding between alternative land uses such as arable farming, forestry and agroforestry. Moreover regional variations in yields, prices and government grants mean that the relative revenue and cost of such systems can vary substantially within Europe. To aid our understanding of these variations, the European Commission sponsored a research project called ‘‘Silvoarable Agroforestry For Europe’’ (SAFE). This paper describes the process of developing a new economic model within that project. The initial stages included establishing criteria for the model with end-users and reviewing the literature and existing models. This indicated that the economic...
Tipo: Journal Article Palavras-chave: ANALYSE DES COUTS; MODELE ECONOMIQUE COST-BENEFIT ANALYSIS; NET PRESENT VALUE; ECONOMIC ANALYSIS; ECONOMIC MODEL; EQUIVALENT ANNUAL VALUE.
Ano: 2011 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20113ec3367b&uri=/notices/prodinra1/2011/06/
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Implementation and calibration of the parameter-sparse Yield-SAFE model to predict production and land equivalent ratio in mixed tree and crop systems under two contrasting production situations in Europe Inra
Graves, A.R.,; Burgess, P.J.; Palma, J.; Keesman, K.J.; van der Werf, W.; Dupraz, C.; van Keulen, H.; Herzog, F.; Mayus, M..
Silvoarable agroforestry, the integration of trees and arable crops on the same area, has the potential to offer production, ecological, and societal benefits. However, the uptake of such systems in Europe has been limited by a combination of unsupportive policies and uncertainty concerning their productivity, profitability, and environmental impact. Faced with a lack of experimental data, the parameter-sparse Yield-SAFE model offers one method for generating plausible yield data and improving understanding of production in mixed tree-crop systems under European conditions. The applicability of the model was examined by: (i) selecting two contrasting sites in France and the UK with measured agricultural, silvoarable and/or forestry data, (ii) implementing...
Tipo: Journal Article Palavras-chave: CULTURE ASSOCIEE; SYSTEME SYLVO-ARABLE.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010d7bd8ddc&uri=/notices/prodinra1/2011/02/
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Monitoring effects of GM crops on butterflies : the use of multiscale approaches for general surveillance Inra
Aviron, S.; Sanvido, O.; Herzog, F.; Baudry, J.; Romeis, J.; Bigler, F..
According to EU Directive 2001/18/EC, a general surveillance monitoring must be implemented to detect possible unexpected effects of genetically modified (GM) crops on the environment. Butterflies have been proposed to be suitable indicators for monitoring environmental changes in agricultural landscapes. Using such mobile organisms as indicators for general surveillance is a challenge as their populations vary according to many environmental factors acting at the field, landscape and regional scales. They might thus not be appropriate to detect unexpected effects of GM crops, unless the sources of variation in their populations can be identified and accounted for. In the present study we use a multiscale approach to describe the interactions between...
Tipo: Journal Article Palavras-chave: PAPILLON HIERARCHY; LANDSCAPE.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200769120cbd&uri=/notices/prodinra1/2011/04/
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Silvoarable systems in Europe - past, present and future prospects Inra
Eichhorn, M.P.; Paris, P.; Herzog, F.; Incoll, L.D.; Liagre, F.; Mantzanas, K.; Mayus, M.; Moreno, G.; Papanastasi, V.P.; Pilbeam, D.J.; Pisanelli, A.; Dupraz, C..
Mixed systems of agriculture incorporating combinations of trees and crops have formed key elements of the landscape of Europe throughout historical times, and many such systems continue to function in the present day. In many cases they represent formerly widespread traditional systems in decline and a number have already become extinct or exist only in a threatened state. The causes are both practical and economic. The agricultural subsidy regime within the European Union is presently unfavourable towards silvoarable practices, which has been a major factor in their recent decline. The silvoarable systems of Europe can be split into two classes according to location – northern Europe and the Mediterranean. The latter contains not only a greater area of...
Tipo: Journal Article Palavras-chave: AGRICULTURE TRADITIONNELLE DEHESA; HAUBERG; INTERCROPPING; ORCHARDS; PRE-VERGERS; STREUOBST; TIMBER.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008c6fdd5d2&uri=/notices/prodinra1/2011/05/
Registros recuperados: 5
Primeira ... 1 ... Última
 

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