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A new conservation strategy for arable plant vegetation in Germany – the project / Stefan Meyer in Plant Breeding and Seed Science, 61 (2010)
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Titre : A new conservation strategy for arable plant vegetation in Germany – the project Type de document : Imprimé Auteurs : Stefan Meyer ; Karsten Wesche ; Christoph Leuschner (1956-) ; Thomas van Elsen (1959-) ; Jürgen Metzner (1941-) Année de publication : 2010 Article en page(s) : 25-34 Catégories : [CBNPMP-Thèmes] Messicole
[CBNPMP-Thèmes] Biodiversité
[CBNPMP-Thèmes] Conservation et gestion des espèces
[CBNPMP-Géographique] AllemagneRésumé : t is prudent to conserve communities which are as species-rich as possible. This is the only means of ensuring that species diversity but also gene diversity is high enough to allow for the necessary adaptations to changed environmental conditions. Arable plant communities are a special case here because losses in the last 5 decades have been particularly severe. Numerous studies from Central Europe reported dramatic declines of the segetal flora.In most of the federal states of Germany, successful measures for protecting the segetal flora, such as the establishment of field flora reserves and field margin strip programmes have often unfortunately come to a halt due to changes in funding, lack of regional support or high levels of bureaucracy. The new project "100 fields for biodiversity", which has been funded by the Deutsche Bundesstiftung Umwelt (DBU) since 2007, aims to establish a network of protected areas for the preservation of endangered segetal species in Germany. Management aimed at preserving and fostering arable wild plants is to be guaranteed in the long term on at least 100 particularly suitable arable sites... Lien pérenne : DOI : 10.2478/v10129-010-0009-3 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148440
in Plant Breeding and Seed Science > 61 (2010) . - 25-34Meyer, S., Wesche, K., Leuschner, C., Elsen, T.v., Metzner, J. 2010. A new conservation strategy for arable plant vegetation in Germany – the project. Plant Breeding and Seed Science, 61: 25-34.Documents numériques
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Article (2010)URL
Titre : New priorities for arable plant conservation Type de document : Électronique Auteurs : Kate Still, Auteur ; Andrew Byfield, Auteur Editeur : Salisbury : Plantlife International – The Wild Plant Conservation Charity Année de publication : 2007 Importance : 20 p. ISBN/ISSN/EAN : 978-1-904749-71-4 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Messicole Résumé : Arable flora is the most threatened group of plants in Britain today. From being a commonplace element of the farmed landscape, and indeed the bane of farmers’ lives in past decades, modern agricultural techniques have brought many species to the verge of extinction. Fifty-four species are considered rare or threatened, whilst seven species are extinct in the arable setting. Far from being opportunistic weeds, cropping up wherever ploughed land exists, increasingly, the complexity of arable plant communities is being recognised. For example, no fewer than 48 different arable communities have been identified, reflecting subtle variations in soil, aspect and climate, whilst many rarer arable plant species show a high fidelity to certain historic areas. Late in the day, conservationists have focused conservation attention on the arable landscape, recognising the precarious state of many characteristic farmland plants, insects and birds. From the plant perspective, it is encouraging to note that even the rarest of arable species often respond well to sympathetic management. Over ten thousand plants each of Cotswold Pennycress and Broad-leaved Cudweed appeared in Worcestershire and Kent respectively, within just a few months of sympathetic farming without herbicides: these are amongst our rarest arable species, confined to a handful of UK sites and both fully protected by law. Nature conservation policies now potentially provide the mechanisms through which effective arable plant conservation could be achieved. The UK Government’s Arable Field Margin Habitat Action Plan (HAP) seeks to expand the area of cultivated, unsprayed field margin in England by an additional 4,619 hectares to 10,000 hectares by 2010. On the ground, the new Entry Level Stewardship (ELS) scheme offers farmers a range of management options that could provide a sustainable future for our most valued arable plant communities and species. Plantlife’s Arable Plants Project has been monitoring the effectiveness of arable plant conservation over the past two years, and through a scheme run in partnership with the Farming and Wildlife Advisory Group (FWAG) has been implementing a programme to conserve key sites in five counties. But increasingly the project has been concerned that conservation effort is not being directed most cost effectively. This report highlights a number of issues of current concern to Plantlife, of which the key areas are: Poor uptake of options: For financial reasons, Entry Level Stewardship is proving popular amongst the farming community, and uptake has generally been good. However, each applicant is free to choose the most appropriate management options, often opting for boundary options (such as hedgerow and ditch management), whilst uptake for key infield arable plant options has been low. Relatively low payment levels compared with the management input required for key uncropped cultivated margins has further discouraged widespread uptake. Poor awareness about arable plants: Rare arable plants continue to suffer from poor awareness amongst landowners, industry professionals and policy makers, and accordingly this low profile means that farmers are often unwilling to manage their land for ‘weed’ conservation. Matters are exacerbated by perceptions about less desirable, pernicious weed species that can ‘infest’ land managed for the conservation of rarer, more delicate growing species. Use of sown conservation mixes: Farmland birds have been chosen as a biodiversity indicator for the health of the arable environment but the widespread and popular use of sown birdseed and pollen and nectar mixes – often utilising non-native species – has ‘artificially’ favoured bird populations yet without necessarily improving the overall biodiversity of the farmed landscape. There is an urgent need to focus attention on arable plants in the landscape, in part to reflect their continued rarity in Britain, but also to reflect the key role that they play towards the viability of rarer insects and birds, in their position at the base of the food chain. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=144395 Still, K., Byfield, A. 2007. New priorities for arable plant conservation. Plantlife International – The Wild Plant Conservation Charity, Salisbury. 20 pp.Documents numériques
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Rapport (2007)Adobe Acrobat PDFLa notion de messicole tentative de définition et de classification / Philippe Jauzein in Le Monde des plantes, 458 (1997)
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Titre : La notion de messicole tentative de définition et de classification Type de document : Imprimé Auteurs : Philippe Jauzein (1953-) Année de publication : 1997 Article en page(s) : 19-23 Langues : Français (fre) Catégories : [CBNPMP-Thèmes] Coadaptation, coévolution, symbiose (dissémination, pollinisation)
[CBNPMP-Thèmes] Mauvaises herbes
[CBNPMP-Thèmes] MessicoleMots-clés : Vaccaria hispanica Agrostemma githago Camelina sativa Lolium temulentum Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=136448
in Le Monde des plantes > 458 (1997) . - 19-23Jauzein, P. 1997. La notion de messicole tentative de définition et de classification. Le Monde des plantes, 458: 19-23.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité R1547 P-58 Revue Centre de documentation Revues Consultable Organic farming enhances the recovery of ancient crops and segetal weeds in Catalonia (NE of Spain) / Lourdes Chamorro (2014)
est un extrait de Proceedings of the 4th ISOFAR Scientific Conference. ‘Building Organic Bridges’, at the Organic World Congress 2014, 13-15 Oct., Istanbul, Turkey (2014)
Titre : Organic farming enhances the recovery of ancient crops and segetal weeds in Catalonia (NE of Spain) Type de document : Extrait d'ouvrage Auteurs : Lourdes Chamorro, Auteur ; Laura Armengot, Auteur ; Laura José-María, Auteur ; Francesc Xavier Sans, Auteur Année de publication : 2014 Importance : 979-981 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Messicole Résumé : The Area of Natural Interest of Gallecs is nowadays one of the largest areas of arable land organically managed in Catalonia. In 2005 a project was launched to convert fields to organic farming and recuperate traditional crop varieties. The aim of this work is to analyse the changes in weed diversity, including both segetal and rare species, and of crops in 20 fields (ca. 46 ha) after the conversion to organic farming during 5 cropping periods (2005-2010). The number of cultivated crops increased from 1 to 17, including ancient and local varieties of cereal and legumes. Weed biodiversity at regional scale doubled in 5 years, whereas the presence of segetal and rare species increased by 75 % and 136 % respectively. Thus, organic farming contributes to the increase and the conservation of weed diversity in arable agroecosystems, including segetal species which are currently rare or have even disappeared from most of the conventional arable fields. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=144414 Chamorro, L., Armengot, L., José-María, L., Sans, F.X. 2014. Organic farming enhances the recovery of ancient crops and segetal weeds in Catalonia (NE of Spain). In: Proceedings of the 4th ISOFAR Scientific Conference. ‘Building Organic Bridges’, at the Organic World Congress 2014, 13-15 Oct., Istanbul, Turkey. Rahmann G., [S.l.]: 979-981.Overcoming limitations of modelling rare species by using ensembles of smallmodels / Frank T. Breiner in Methods in ecology and evolution, 6 (2015)
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Titre : Overcoming limitations of modelling rare species by using ensembles of smallmodels Type de document : Imprimé Auteurs : Frank T. Breiner ; Antoine Guisan (1966-) ; Ariel Bergamini ; Michael P. Nobis Année de publication : 2015 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Messicole Note de contenu : 1- Species distribution models (SDMs) have become a standard tool in ecology and applied conservation biology. Modelling rare and threatened species is particularly important for conservation purposes. However, modelling rare species is difficult because the combination of few occurrences and many predictor variables easily leads to model overfitting. A new strategy using ensembles of small models was recently developed in an attempt to overcome this limitation of rare species modelling and has been tested successfully for only a single species so far. Here, we aim to test the approach more comprehensively on a large number of species including a transferability assessment. 2- For each species, numerous small (here bivariate) models were calibrated, evaluated and averaged to an ensemble weighted by AUC scores. These ‘ensembles of small models’ (ESMs) were compared to standard SDMs using three commonly used modelling techniques (GLM, GBM and Maxent) and their ensemble prediction. We tested 107 rare and under-sampled plant species of conservation concern in Switzerland. 3- We show that ESMs performed significantly better than standard SDMs. The rarer the species, the more pronounced the effects were. ESMs were also superior to standard SDMs and their ensemble when they were evaluated using a transferability assessment. 4- By averaging simple small models to an ensemble, ESMs avoid overfitting without losing explanatory power through reducing the number of predictor variables. They further improve the reliability of species distribution models, especially for rare species, and thus help to overcome limitations of modelling rare species.
Lien pérenne : DOI : 10.1111/2041-210X.12403 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148446
in Methods in ecology and evolution > 6 (2015)Breiner, FT., Guisan, A., Bergamini, A., Nobis, MP. 2015. Overcoming limitations of modelling rare species by using ensembles of smallmodels. Methods in ecology and evolution, 6.Documents numériques
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Article (2015)URLDes parcelles plus propres avec moins d’herbicides grâce à des systèmes de culture intégrés fondés sur l'agronomie / Pierre Mischler (2007)
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PermalinkPatterns of co-occurrence of rare and threatened species in winter arable plant communities of Italy / Emanuele Fanfarillo in Diversity, 12 (5) (May 2020)
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PermalinkPermalinkPermalinkPlant reproductive susceptibility to habitat fragmentation: Review and synthesis through a meta-analysis / Ramiro Aguilar in Ecology Letters, 9 (8) (2006)
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PermalinkPlant traits and population characteristics predict extinctions in a long‑term survey of Mediterranean annual plants / Arne Saatkamp in Biodiversity and conservation, 27 (2018)
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PermalinkPlantes compagnes des moissons, une longue histoire... / Pierre Sellenet (2009)
PermalinkPermalinkLes plantes messicoles en Languedoc-Roussillon / Conservatoire des espaces naturels (CEN) (Languedoc-Roussillon) (2005)
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PermalinkLes plantes messicoles du Parc naturel des Grands Causses / Christian Bernard in Patrimoni : journal du patrimoine aveyronnais, 104 (2023)
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