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Notas sobre el genero Rhinanthus L. (Scrophulariaceae) en la Peninsula Iberica / Llorenç Sáez (2000)
Titre : Notas sobre el genero Rhinanthus L. (Scrophulariaceae) en la Peninsula Iberica Type de document : Tiré à part de revue Auteurs : Llorenç Sáez ; José Luis Benito Alonso Année de publication : 2000 Importance : 129-143 Langues : Espagnol (spa) Catégories : [CBNPMP-Thèmes] Systématique, diagnose, description variétale, flore, détermination, nouvelle espèce, révision taxonomique
[CBNPMP-Géographique] Péninsule IbériqueMots-clés : Rhinanthus Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=130650 Sáez, L., Benito Alonso, J.L. 2000. Notas sobre el genero Rhinanthus L. (Scrophulariaceae) en la Peninsula Iberica. Acta Botanica Barcinonensia, 46 : 129-143.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 10730 Benito Alonso J.L. Tiré à part Centre de documentation Tirés à part Consultable Documents numériques
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Article (2000)URL Enhancing diversity of species-poor grasslands: an experimental assessment of multiple constraints / Richard F. Pywell in Journal of applied ecology, 44 (2007)
[article]
Titre : Enhancing diversity of species-poor grasslands: an experimental assessment of multiple constraints Type de document : Imprimé Auteurs : Richard F. Pywell ; James Bullock ; Jerry B. Tallowin ; Kevin John Walker ; Liz Warman ; Greg Masters Année de publication : 2007 Article en page(s) : 81-94 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Restauration des écosystèmes
[CBNPMP-Thèmes] RevégétalisationMots-clés : Rhinanthus Résumé : 1 Many grasslands in north-west Europe are productive but species-poor communities resulting from intensive agriculture. Reducing the intensity of management under agri-environment schemes has often failed to increase botanical diversity. We investigated biotic and abiotic constraints on diversification by manipulating seed and microsite availability, soil fertility, resource competition, herbivory and deficiencies in the soil microbial community. 2 The effectiveness of 13 restoration treatments was investigated over 4 years in a randomized block experiment established in two productive grasslands in central-east and south-west England. 3 Severe disturbance involving turf removal followed by seed addition was the most effective and reliable means of increasing grassland diversity. Disturbance by multiple harrowing was moderately effective but was enhanced by molluscicide application to reduce seedling herbivory and by sowing the hemiparasite Rhinanthus to reduce competition from grasses. 4 Low-level disturbance by grazing or slot-seeding was ineffective in increasing diversity. Inoculation with soil microbial communities from species-rich grasslands had no effect on botanical diversity. Nitrogen and potassium fertilizer addition accelerated off-take of phosphorus in cut herbage but did not cause a reduction in soil phosphorus or increase botanical diversity. 5 Different grazing management regimes had little impact on diversity. This may reflect the constraining effect of the July hay cut on species dispersal and colonization. 6 Synthesis and applications. Three alternative approaches to grassland diversification, with different outcomes, are recommended. (i) High intervention deturfing, which would create patches with low competitive conditions for rapid and reliable establishment of the target community. For reasons of cost and practicality this can only be done over small areas but will form source populations for subsequent spread. (ii) Moderate intervention (harrowing or slot-seeding) over large areas, which would establish a limited number of desirable, generalist species that perform well in restoration. This method is low cost and rapid but the increases in biodiversity are less predictable. (iii) Phased restoration, which would complement the above approaches. Productivity and competition are reduced over 3–5 years using Rhinanthus or fertilizers to accelerate phosphorus off-take. After this time harrowing and seeding should allow a wide range of more specialist species to establish. However, further research is required to determine the long-term effectiveness of these approaches.
Lien pérenne : DOI : 10.1111/j.1365-2664.2006.01260.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148809
in Journal of applied ecology > 44 (2007) . - 81-94Pywell, RF., Bullock, J., Tallowin, JB., Walker, K.J., Warman, L., Masters, G. 2007. Enhancing diversity of species-poor grasslands: an experimental assessment of multiple constraints. Journal of applied ecology, 44: 81-94.Documents numériques
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Article (2007)URL Présentation et résultats des séances de travail d'Isatis 31 / Lionel Belhacène in Isatis, 4 (2004)
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Titre : Présentation et résultats des séances de travail d'Isatis 31 Type de document : Imprimé Auteurs : Lionel Belhacène Année de publication : 2004 Article en page(s) : 45-75 Langues : Français (fre) Mots-clés : Centaurea gr. nigra L. Euphrasia Koeleria Rhinanthus Galeopsis Polygonum Fumana Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=139042
in Isatis > 4 (2004) . - 45-75Belhacène, L. 2004. Présentation et résultats des séances de travail d'Isatis 31. Isatis, 4: 45-75.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité R2386 P-643 Revue Centre de documentation Revues Consultable