Portail documentaire

Effect of water stress on the relative competitive abilities of Charlock (Sinapis arvensis) and spring wheat / Edward Jon Marshall (1996)

Public Citation est un extrait de Xéme colloque international sur la biologie des mauvaises herbes / Association nationale pour la protection des plantes (France) (1996) Titre : Effect of water stress on the relative competitive abilities of Charlock (Sinapis arvensis) and spring wheat Type de document : Extrait d'ouvrage Auteurs : Edward Jon Marshall (1952-) ; Seavers ; Wright Année de publication : 1996 Importance : p. 121-126 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Malherbologie [CBNPMP-Thématique] Interactions interspécifiques Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=85171 Marshall, Edward Jon (1952-), Seavers, Wright 1996 Effect of water stress on the relative competitive abilities of Charlock (Sinapis arvensis) and spring wheat. In: Xéme colloque international sur la biologie des mauvaises herbes. ANPP, Paris: 121-126.

Field margins in northern Europe : their functions and interactions with agriculture / Edward Jon Marshall (2002)

Public Citation est un tiré à part de 89 - 2002 (Agriculture, ecosystems & environment) Titre : Field margins in northern Europe : their functions and interactions with agriculture Type de document : Tiré à part de revue Auteurs : Edward Jon Marshall (1952-) ; AC Moonen Année de publication : 2002 Importance : 5-21 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Messicole Résumé : Most agricultural landscapes are a mosaic of farmers’ fields, semi-natural habitats, human infrastructures (e.g. roads) and occasional natural habitats. Within such landscapes, linear semi-natural habitats often define the edges of agricultural fields. This paper reviews the role and interactions within and between the flora of these elements. In temperate, intensive agriculture, such field margin habitats, which historically had true agricultural functions, now are important refugia for biodiversity. As manmade habitats, field margins may also have important cultural roles as part of our landscape heritage, e.g. hedges in Britain. Whilst field margins are not usually specific habitat types, they contain a variety of plant communities in a variety of structures. These may range from aquatic elements to ruderal and woodland communities. Lien pérenne : DOI : 10.1016/S0167-8809(01)00315-2 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=134090 Marshall, Edward Jon (1952-), Moonen, AC 2002 Field margins in northern Europe : their functions and interactions with agriculture. Agriculture, ecosystems & environment, 89 : 5-21.

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21438	JC	Tiré à part	Bureaux	Conservation	Consultable

Introducing field margin ecology in Europe / Edward Jon Marshall (2002)

Public Citation est un tiré à part de 89 - 2002 (Agriculture, ecosystems & environment) Titre : Introducing field margin ecology in Europe Type de document : Tiré à part de revue Auteurs : Edward Jon Marshall (1952-) Année de publication : 2002 Importance : 1-4 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Messicole Résumé : In most intensively-managed European farming systems, the uncultivated elements present are linear features in the landscape, typically field margins, verges and watercourses. These elements are important for biological diversity in farming landscapes, but also are viewed as sources of weeds, pests and diseases. An understanding of the origins, functions and ecology of these semi-natural elements is required, if these man-made structures are to survive. Increasingly, their agricultural functions are declining in importance, while cultural and environmental roles are increasing. Significant research effort is in progress to understand the ecology of field margins at a range of spatial scales. This issue presents a number of papers addressing different aspects of the studies in hand in Europe. Lien pérenne : DOI : 10.1016/S0167-8809(01)00314-0 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=134084 Marshall, Edward Jon (1952-) 2002 Introducing field margin ecology in Europe. Agriculture, ecosystems & environment, 89 : 1-4.

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21432	JC	Tiré à part	Bureaux	Conservation	Consultable

The horizontal movement of seeds in arable soil by differnet soil cultivation methods / Edward Jon Marshall in Journal of applied ecology, 36 ([01/01/1999]) 

Public Citation [article]  inJournal of applied ecology > 36 [01/01/1999] . - 443-454 Titre : The horizontal movement of seeds in arable soil by differnet soil cultivation methods Type de document : Électronique Auteurs : Edward Jon Marshall (1952-), Auteur Année de publication : 1999 Article en page(s) : 443-454 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Malherbologie Résumé : To assess the impact of soil cultivation on the horizontal movement of seeds in arable soil, plastic beads and barley or triticale seeds were used as seed models. Different coloured beads were introduced in the field immediately before each of five cultivations: ploughing, two tine cultivations, harrowing and seed drilling. Beads were recovered from 20-cm soil cores divided into four 5-cm deep soil horizons. After a typical cultivation sequence of five operations, beads were found up to 15m from their source, although most beads were found within 2m. Most beads were recovered from the surface 5cm of the soil profile, except for those introduced onto the surface or at 20cm depth before ploughing, which were concentrated below 10cm. Regression analysis was used to determine the pattern of bead movement by seed drilling. A novel analysis using Fast Fourier Transforms established the probability distribution functions of the remaining cultivation operations for horizontal movement. Using the final seed distributions, the effects of each cultivation were sequentially deconvoluted and the probability distribution functions smoothed. The proportions of beads moved were also calculated. Ploughing and seed drilling moved seed the least distance compared with other cultivations. The mean distances moved were 0·36m and 0·26m, respectively. Tine cultivations moved beads 0·71m and 1·21m, while harrowing moved seed a mean distance of 1·58m. Cultivation sequences based on ploughing are likely to limit seed movement in soil. The Fourier deconvolution approach has potential for predicting future seed distributions and thus the spatial behaviour of weed patches within fields. Lien pérenne : DOI : 10.1046/j.1365-2664.1999.00412.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=144360 Marshall, Edward Jon (1952-) 1999 The horizontal movement of seeds in arable soil by differnet soil cultivation methods. Journal of applied ecology, 36: 443-454.

Documents numériques

Consultable Article (1999) URL

The role of weeds in supporting biological diversity within crop fields / Edward Jon Marshall (2003)

Public Citation est un tiré à part de 43 (2) - April 2003 (Weed Research) Titre : The role of weeds in supporting biological diversity within crop fields Type de document : Tiré à part de revue Auteurs : Edward Jon Marshall (1952-) ; Valerie K. Brown ; Nigel Boatman ; P. J. W. Lutman ; Geoffrey R. Squire ; L. K. Ward Année de publication : 2003 Importance : 77-89 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Messicole Résumé : Weeds are major constraints on crop production, yet as part of the primary producers within farming systems, they may be important components of the agroecosystem. Using published literature, the role of weeds in arable systems for other above-ground trophic levels are examined. In the UK, there is evidence that weed flora have changed over the past century, with some species declining in abundance, whereas others have increased. There is also some evidence for a decline in the size of arable weed seedbanks. Some of these changes reflect improved agricultural efficiency, changes to more winter-sown crops in arable rotations and the use of more broad-spectrum herbicide combinations. Interrogation of a database of records of phytophagous insects associated with plant species in the UK reveals that many arable weed species support a high diversity of insect species. Reductions in abundances of host plants may affect associated insects and other taxa. A number of insect groups and farmland birds have shown marked population declines over the past 30 years. Correlational studies indicate that many of these declines are associated with changes in agricultural practices. Certainly reductions in food availability in winter and for nestling birds in spring are implicated in the declines of several bird species, notably the grey partridge, Perdix perdix. Thus weeds have a role within agroecosystems in supporting biodiversity more generally. An understanding of weed competitivity and the importance of weeds for insects and birds may allow the identification of the most important weed species. This may form the first step in balancing the needs for weed control with the requirements for biodiversity and more sustainable production methods. Lien pérenne : DOI : 10.1046/j.1365-3180.2003.00326.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=134138 Marshall, Edward Jon (1952-), Brown, Valerie K., Boatman, Nigel, Lutman, P. J. W., Squire, Geoffrey R., Ward, L. K. 2003 The role of weeds in supporting biological diversity within crop fields. Weed Research, 43(2) : 77-89.

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21740	JC	Tiré à part	Bureaux	Conservation	Consultable