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Auteur David Kleijn |
Documents disponibles écrits par cet auteur (5)
Affiner la rechercheFactors affecting the species composition of arable field boundary vegetation / David Kleijn in Journal of applied ecology, 37 ([01/01/2000])
Titre : Factors affecting the species composition of arable field boundary vegetation Type de document : Électronique Auteurs : David Kleijn, Auteur ; Marein Verbeek, Auteur Année de publication : 2000 Article en page(s) : 256-266 Langues : Anglais (eng) Lien pérenne : DOI : 10.1046/j.1365-2664.2000.00486.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=144359
in Journal of applied ecology > 37 [01/01/2000] . - 256-266Kleijn, David, Verbeek, Marein 2000 Factors affecting the species composition of arable field boundary vegetation. Journal of applied ecology, 37: 256-266.Documents numériques
Consultable
Article (2000)URL
Titre : How effective are European agri-environment schemes in conserving and promoting biodiversity ? Type de document : Imprimé Auteurs : David Kleijn ; Willliam J. Sutherland (1956-) Année de publication : 2003 Article en page(s) : 947-969 Langues : Français (fre) Résumé : Increasing concern over the environmental impact of agriculture in Europe has led to the introduction of agri-environment schemes. These schemes compensate farmers financially for any loss of income associated with measures that aim to benefit the environment or biodiversity. There are currently agri-environment schemes in 26 out of 44 European countries. Agri-environment schemes vary markedly between countries even within the European Union. The main objectives include reducing nutrient and pesticide emissions, protecting biodiversity, restoring landscapes and preventing rural depopulation. In virtually all countries the uptake of schemes is highest in areas of extensive agriculture where biodiversity is still relatively high and lowest in intensively farmed areas where biodiversity is low. Approximately $24·3 billion has been spent on agri-environment schemes in the European Union (EU) since 1994, an unknown proportion of it on schemes with biodiversity conservation aims. We carried out a comprehensive search for studies that test the effectiveness of agri-environment schemes in published papers or reports. Only 62 evaluation studies were found originating from just five EU countries and Switzerland (5). Indeed 76% of the studies were from the Netherlands and the United Kingdom, where until In the majority of studies, the research design was inadequate to assess reliably the effectiveness of the schemes. Thirty-one percent did not contain a statistical analysis. Where an experimental approach was used, designs were usually weak and biased towards giving a favourable result. The commonest experimental design (37% of the studies) was a comparison of biodiversity in agri-environment schemes and control areas. However, there is a risk of bias if either farmers or scheme co-ordinators select the sites for agri-environment schemes. In such cases the sites are likely to have a higher biodiversity at the outset compared to the controls. This problem may be addressed by collecting baseline data (34% of studies), comparing trends (32%) or changes (26%) in biodiversity between areas with and without schemes or by pairing scheme and control sites that experience similar environmental conditions (16%). 5. Overall, 54% of the examined species (groups) demonstrated increases and 6% decreases in species richness or abundance compared with controls. Seventeen percent showed increases for some species and decreases for other species, while 23% showed no change at all in response to agri-environment schemes. The response varied between taxa. Of 19 studies examining the response of birds that included a statistical analysis, four showed significant increases in species richness or abundance, two showed decreases and nine showed both increases and decreases. Comparative figures for 20 arthropod studies yielded 11 studies that showed an increase in species richness or abundance, no study showed a decrease and three showed both increases and decreases. Fourteen plant studies yielded six studies that showed increases in species richness or abundance, two showed decreases and no study showed both increases and decreases. Synthesis and applications. The lack of robust evaluation studies does not allow a general judgement of the effectiveness of European agri-environment schemes. We suggest that in the future, ecological evaluations must become an integral part of any scheme, including the collection of baseline data, the random placement of scheme and control sites in areas with similar initial conditions, and sufficient replication. Results of these studies should be collected and disseminated more widely, in order to identify the approaches and prescriptions that best deliver biodiversity enhancement and value for money from community support." Lien pérenne : DOI : 10.1111/j.1365-2664.2003.00868.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=147261
in Journal of applied ecology > 40 [01/01/2003] . - 947-969Kleijn, David, Sutherland, Willliam J. (1956-) 2003 How effective are European agri-environment schemes in conserving and promoting biodiversity ? Journal of applied ecology, 40: 947-969.Documents numériques
Article (2003)URLPlant distribution across arable field ecotones in the Netherlands / Wouter Joenje (1994)
Titre : Plant distribution across arable field ecotones in the Netherlands Type de document : Extrait d'ouvrage Auteurs : Wouter Joenje ; David Kleijn Année de publication : 1994 Importance : p. 323-328 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149248 Joenje, Wouter, Kleijn, David 1994 Plant distribution across arable field ecotones in the Netherlands. In: Field margins : integrating agriculture and conservation. British Crop Protection Council, Farnham: 323-328.
Titre : The effectiveness of flower strips and hedgerows on pest control, pollination services and crop yield: a quantitative synthesis Type de document : Électronique Auteurs : Matthias Albrecht ; David Kleijn ; Neal M. Williams ; Matthias Tschumi (1986-) ; Brett R. Blaauw ; Riccardo Bommarco ; Alistair J. Campbell ; Matteo Dainese ; Francis A. Drummond ; Martin H. Entling ; Dominik Ganser ; G. Arjen de Groot ; Dave Goulson ; Heather Grab ; Hannah Hamilton ; Félix Herzog ; Rufus Isaacs ; Katja Jacot (1971-) ; Philippe Jeanneret ; Mattias Jonsson ; Eva Knop ; Claire Kremen ; Douglas A. Landis ; Gregory M. Loeb ; Lorenzo Marini ; Megan McKerchar ; Lora Morandin ; Sonja C. Pfister ; Simon G. Potts ; Maj Rundölf ; Hillary Sardiñas ; Amber Sciligo ; Carsten Thies ; Teja Tscharntke (1952-) ; Eric Venturini ; Eve Veromann ; Ines M. G. Vollhardt ; Félix Wäckers ; Kimiora Ward ; Duncan B. Westbury ; Andrew Wilby ; Megan Woltz ; Steve Wratten ; Louis Sutter Année de publication : 2020 Article en page(s) : 1-11 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Agroécologie
[CBNPMP-Thématique] Coadaptation, coévolution, symbiose (dissémination, pollinisation)Résumé : Floral plantings are promoted to foster ecological intensification of agriculture through provisioning of ecosystem services. However, a comprehensive assessment of the effectiveness of different floral plantings, their characteristics and consequences for crop yield is lacking. Here we quantified the impacts of flower strips and hedgerows on pest control (18 studies) and pollination services (17 studies) in adjacent crops in North America, Europe and New Zealand. Flower strips, but not hedgerows, enhanced pest control services in adjacent fields by 16% on average. However, effects on crop pollination and yield were more variable. Our synthesis identifies several important drivers of variability in effectiveness of plantings: pollination services declined exponentially with distance from plantings, and perennial and older flower strips with higher flowering plant diversity enhanced pollination more effectively. These findings provide promising pathways to optimise floral plantings to more effectively contribute to ecosystem service delivery and ecological intensification of agriculture in the future. Lien pérenne : DOI : 10.1111/ele.13576 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=143465
in Ecology Letters > 23 (10) (2020) . - 1-11Albrecht, Matthias, Kleijn, David, Williams, Neal M., Tschumi, Matthias (1986-), Blaauw, Brett R., Bommarco, Riccardo, Campbell, Alistair J., Dainese, Matteo, Drummond, Francis A., Entling, Martin H., Ganser, Dominik, Arjen de Groot, G., Goulson, Dave, Grab, Heather, Hamilton, Hannah, Herzog, Félix, Isaacs, Rufus, Jacot, Katja (1971-), Jeanneret, Philippe, Jonsson, Mattias, Knop, Eva, Kremen, Claire, Landis, Douglas A., Loeb, Gregory M., Marini, Lorenzo, McKerchar, Megan, Morandin, Lora, Pfister, Sonja C., Potts, Simon G., Rundölf, Maj, Sardiñas, Hillary, Sciligo, Amber, Thies, Carsten, Tscharntke, Teja (1952-), Venturini, Eric, Veromann, Eve, Vollhardt, Ines M. G., Wäckers, Félix, Ward, Kimiora, Westbury, Duncan B., Wilby, Andrew, Woltz, Megan, Wratten, Steve, Sutter, Louis 2020 The effectiveness of flower strips and hedgerows on pest control, pollination services and crop yield: a quantitative synthesis. Ecology Letters, 23(10): 1-11.Documents numériques
Article (2009)URL
Titre : The role of agri-environment schemes in conservation and environmental management Type de document : Imprimé Auteurs : Péter Batáry ; Lynn V. Dicks ; David Kleijn ; Willliam J. Sutherland (1956-) Année de publication : 2015 Article en page(s) : 1-11 Langues : Anglais (eng) Résumé : Over half of the European landscape is under agricultural management and has been formillennia. Many species and ecosystems of conservation concern in Europe depend on agricultural management and are showing ongoing declines. Agri-environment schemes (AES) are designed partly to address this. They are a major source of nature conservation funding within the European Union (EU) and the highest conservation expenditure in Europe.We reviewed the structure of current AES across Europe. Since a 2003 review questioned the overall effectiveness of AES for biodiversity, there has been a plethora of case studies and meta-analyses examining their effectiveness. Most syntheses demonstrate general increases in farmland biodiversity in response to AES, with the size of the effect depending on the structure and management of the surrounding landscape. This is important in the light of successive EU enlargement and ongoing reforms of AES. We examined the change in effect size over time by merging the data sets of 3 recent meta-analyses and found that schemes implemented after revision of the EU’s agri-environmental programs in 2007 were not more effective than schemes implemented before revision. Furthermore, schemes aimed at areas out of production (such as field margins and hedgerows) are more effective at enhancing species richness than those aimed at productive areas (such as arable crops or grasslands). Outstanding research questions include whether AES enhance ecosystem services, whether they are more effective in agriculturally marginal areas than in intensively farmed areas, whether they are more or less cost-effective for farmland biodiversity than protected areas, and how much their effectiveness is influenced by farmer training and advice? The general lesson from the European experience is that AES can be effective for conserving wildlife on farmland, but they are expensive and need to be carefully designed and targeted.
Lien pérenne : DOI : 10.1111/cobi.12536 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=145978
in Conservation Biology > (2015) . - 1-11Batáry, Péter, Dicks, Lynn V., Kleijn, David, Sutherland, Willliam J. (1956-) 2015 The role of agri-environment schemes in conservation and environmental management. Conservation Biology: 1-11.Documents numériques
Article (2015)URL
