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Assessing the effects of mowing machinery on seed dispersal pattern: a test of two methods of seed tracking / Clémence Chaudron in Botany letters, vol. 164, n°4 (Année 2017)

Public [article]  inBotany letters > vol. 164, n°4 (Année 2017) . - pp. 413-423 Titre : Assessing the effects of mowing machinery on seed dispersal pattern: a test of two methods of seed tracking Type de document : texte imprimé Auteurs : Clémence Chaudron, Auteur ; Francis Isselin-Nondedeu, Auteur Année de publication : 2017 Article en page(s) : pp. 413-423 Langues : Anglais (eng) Mots-clés : dispersion des graines   mower   road verges   field margins   seed shadows   seed traits Résumé : "Seed dispersal is a key process that humans can influence in various ways. However, this type of interaction is less studied than dispersal by other animals. In addition, tracking seeds to determine dispersal pattern is a complicated task. We explored the effects of mowing machinery on seed dispersal in roadsides by testing two methods, (i) by marking fruits and diaspore of plants within the standing vegetation (ii) by making fake plants containing estimated quantities of marked seeds. We measured the pattern of dispersal by considering each seed and the centre of seed shadows of each species calculated by two means (i.e. the centroids and the gravity centres). We estimated the distance of dispersal from roadsides, and the deviation angle from the direction of the mowing. We then analysed the variation in dispersal patterns among species, seed mass and width/length ratio by using correlation tests. Seeds coloured within the standing vegetation were detected from 0.5 to 15.51 metres away from roadsides, with deviation angles from the mowing machinery ranging from –153.43° to 161.57°. With the other method we found a mean distance of dispersal ranging from 0.5 to 13.01 metres and deviation angle from –168.69° to 180°. We did not find strong variation in dispersal patterns among species and seed traits, but we demonstrated however that mowing machinery influenced both dispersal distance and deviation angles." Type de publication : périodique Référence biblio : Chaudron C., Isselin-Nondedeu F., 2017 - Assessing the effects of mowing machinery on seed dispersal pattern: a test of two methods of seed tracking. Botany letters, 164 (4) : 413-423. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=67306 [article]

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Cote	Localisation	Disponibilité
P0177-6	Brest	Exclu du prêt

Effects of connectivity on seed dispersal patterns in hedgerows / Cendrine Mony in Journal of Vegetation Science, vol. 33, n°1 (Année 2023)

Public [article]  inJournal of Vegetation Science > vol. 33, n°1 (Année 2023) . - e13113 Titre : Effects of connectivity on seed dispersal patterns in hedgerows Type de document : texte imprimé Auteurs : Cendrine Mony, Auteur ; Quentin Landais, Auteur ; Romain Georges, Auteur ; Alain Butet, Auteur ; Françoise Burel, Auteur ; Olivier Jambon, Auteur ; Valérie Gouesbet, Auteur ; Aude Ernoult, Auteur Année de publication : 2023 Article en page(s) : e13113 Langues : Anglais (eng) Catégories : [habitats/milieux] 84.2 - BORDURES DE HAIES [Thèmes] Corridor écologique Mots-clés : corridor écologique  fragment forestier  haie  connectivité du paysage  communauté végétale  dispersion des graines  prédation des graines Résumé : "Results = Our results revealed no difference in the number of trapped seeds in connected and unconnected pathways, but did reveal a difference in the number and richness of viable seeds, with corridors having a positive impact. In the predation experiment, the rate of removal of small seeds was higher in connected pathways than in unconnected pathways. Conclusion : Connectivity enhanced the dispersal of viable forest plant species but also the predation of small seeds, which possibly played a role in their subsequent dispersal. This work highlighted the effect of connectivity on seed dynamics within hedgerows and improves our understanding of the role of hedgerows as stepping-stones for seed dispersal among forest patches." (source : auteurs) Type de publication : périodique Référence biblio : Mony C., Landais Q., Georges R., Butet A., Burel F., Jambon O., Gouesbet V., Ernoult A., 2023 - Effects of connectivity on seed dispersal patterns in hedgerows. Journal of Vegetation Science, 33 (1) : e13113. ID PMB : 70976 DOI : 10.1111/jvs.13113 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=70976 [article]

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Spatial analysis of genetic diversity as a tool for plant conservation / Adrián Escudero in Biological conservation, vol. 113, n°3 (Année 2003)

Public [article]  inBiological conservation > vol. 113, n°3 (Année 2003) . - pp. 351-365 Titre : Spatial analysis of genetic diversity as a tool for plant conservation Auteurs : Adrián Escudero, Auteur ; José M. Iriondo, Auteur ; M. Elena Torres, Auteur Année de publication : 2003 Article en page(s) : pp. 351-365 Langues : Anglais (eng) Catégories : [Thèmes] Conservation [Thèmes] Plante à forte valeur patrimoniale [Thèmes] Pollinisation, pollen, nectar [Thèmes] Reproduction Mots-clés : diversité génétique  contexte spatial  dispersion des graines  système de reproduction  hétérogénéité de l'habitat  dynamique des populations Résumé : "Development of suitable approaches to the analysis of genetic diversity in a spatial context, where factors such as pollination, seed dispersal, breeding system, habitat heterogeneity and human influence are appropriately integrated, can provide new insights in the understanding of the mechanisms of maintenance and dynamics of populations. In this sense, it is important to recognise that patterns and processes may take place at different scales at the same time, and that the scales of a study must be chosen in accordance with the objectives pursued. Apart from conventional approaches to genetic structure, spatial autocorrelation and related techniques, such as Mantel test, correlograms, Mantel correlograms, join-counts, variograms and point pattern analysis, can detect and characterise the existence of spatial genetic structures and lead the way to discussing the environmental and biological factors responsible for them. An alternative way of including spatial variability in modelling approaches that deal with genetic patterns or processes is through the use of constrained ordinations. Although scarcely used at present, these methodologies have great applicability in conservation biology and can lead a way to an effective integration of genetic, demographic and ecological perspectives." (source : auteurs) Type de publication : périodique Référence biblio : Escudero A., Iriondo J., Torres M.-E., 2003 - Spatial analysis of genetic diversity as a tool for plant conservation. Biological conservation, 113 (3) : 351-365. ID PMB : 72253 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=72253 [article]

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