trié(s) par (Pertinence décroissant(e), Titre croissant(e)) 

Phenological and genetic characterization of Sedum hispanicum (Crassulaceae) in the Italian peninsula at the western margin of its distribution / Giovanna Pezzi in Plant Ecology and Evolution, vol. 150, n°3 (Année 2017)

Public [article]  inPlant Ecology and Evolution > vol. 150, n°3 (Année 2017) . - pp. 293-303 Titre : Phenological and genetic characterization of Sedum hispanicum (Crassulaceae) in the Italian peninsula at the western margin of its distribution Type de document : texte imprimé Auteurs : Giovanna Pezzi, Auteur ; Fabrizio Buldrini, Auteur ; Antonio Mandolfo, Auteur ; Giovanna Puppi, Auteur ; Andrea Velli, Auteur ; Lucia Conte, Auteur Année de publication : 2017 Article en page(s) : pp. 293-303 Langues : Anglais (eng) Mots-clés : phénologie florale  genetic variation  gypsum vein  ISSR markers  Natura 2000  northern apennine  stonecrop  synchrony Résumé : "Background and aims – Sedum hispanicum acts as a pioneer species on the gypsum outcrops of Emilia Romagna region (Northern Italy). The species was studied in two Sites of Community Importance through a comparative phenological and genetic diversity analysis to provide insights into strategies adopted by the species for successful reproduction in the harsh conditions of these rocky outcrops. Methods – Phenology was examined in individuals from four sampling sites chosen in one study area (Gessi Bolognesi e Calanchi dell’Abbadessa, GB) from March to June in two years (2013 and 2015) with different spring temperatures. Reproductive and vegetative phenophases were compared among sites and over years. ISSR-based molecular analysis was performed to obtain genetic diversity measures on individuals collected at the same four GB sites and, for comparison, in a second area (Gessi di Monte Rocca, Monte Capra e Tizzano). Key results – Individuals at the four GB sites showed inter-annual differences in full flowering and leaf senescence, but intra-annual synchrony of all monitored phenophases. Moderate amounts of genetic diversity were observed in the two areas (P% = 79.67, 67.48; I = 0.209, 0.205; He = 0.118, 0.122). Low genetic structure (Φst = 0.05; Gst = 0.06) and high gene flow (Nm = 3.92) resulted within the GB area. Genetic differentiation was higher between the two areas (Φst = 0.37, Gst = 0.22). Evidence of inbreeding (s = 0.61) was found in the GB area. Conclusions – Inter-annual differences in timing of full flowering phenophase seem to be related chiefly to spring temperatures. The estimates of genetic diversity in S. hispanicum are comparable to those of autogamous and clonal species, while the partitioning of genetic diversity reflects the low structure typical of outcrossing species. Intra-annual flowering synchrony is likely to promote sexual reproduction. Sedum hispanicum seems to adopt multiple reproductive modes to overcome environmental extremes of gypsum outcrops. © 2017 Botanic Garden Meise and Royal Botanical Society of Belgium." Type de publication : périodique Référence biblio : Pezzi G., Buldrini F., Mandolfo A., Puppi G., Velli A., Conte L., 2017 - Phenological and genetic characterization of Sedum hispanicum (Crassulaceae) in the Italian peninsula at the western margin of its distribution. Plant Ecology and Evolution, 150 (3) : 293-303. DOI : 10.5091/plecevo.2017.1309 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66842 [article]

Exemplaires(1)

Cote	Localisation	Disponibilité
P0179-2	Brest	Exclu du prêt

Ten years of citizen science data collection of wetland plants in an urban protected area / Fabrizio Buldrini in Acta botanica gallica, vol. 162, n°4 (Année 2015)

Public [article]  inActa botanica gallica > vol. 162, n°4 (Année 2015) . - pp. 365-373 Titre : Ten years of citizen science data collection of wetland plants in an urban protected area Type de document : texte imprimé Auteurs : Fabrizio Buldrini, Auteur ; Antinisca Simoncelli, Auteur ; Stefania Accordi, Auteur ; Giovanna Pezzi, Auteur ; Daniele Dallai, Auteur Année de publication : 2015 Article en page(s) : pp. 365-373 Langues : Anglais (eng) Catégories : [habitats/milieux] 8 - Terres agricoles et paysages artificiels [habitats/milieux] ZH - Zones humides [Espèces (in biblio)] Nelumbo nucifera Gaertn. [Espèces (in biblio)] Nymphaea alba L. [Espèces (in biblio)] Trapa natans L. Mots-clés : plante invasive  conservation  plante menacée  aire protégée  science participative  suivi à long terme Résumé : "Floodplain landscape is the result of man’s presence over a long period of time. This has caused the degradation, or even loss, of several habitats, especially wetlands, which frequently preserve rare biodiversity, even though they are subjected to intense human presence. Human activities can be of value, but can also cause problems in species preservation. The protected area “Ansa e Valli del Mincio” (northern Italy) is an outstanding case study in this respect: it is located in a densely urbanized context, but has great value from a conservation standpoint. This paper presents the results of 10 years of monitoring (2003–2012) of the spatial distribution of two native species (and Nymphaea alba) and the invasive Nelumbo nucifera. Data collected by volunteers from the protected area were processed in GIS and analysed using a number of configurational landscape metrics. Nymphaea alba and N. nucifera became more widespread; T. natans underwent a serious decline, mostly due to the interference of N. nucifera. An oscillating trend of this species is visible until 2008, followed by substantial stability. Furthermore, the potential area of each species was calculated. On the whole, citizen science is a valuable tool to enhance biodiversity knowledge and safeguarding, especially in wetlands that are used for tourism and surrounded by residential areas. As in other contexts, the volunteer contribution was particularly helpful in data collection on a local scale, over a considerable time span." (source : auteurs) Type de publication : périodique Référence biblio : Buldrini F., Simoncelli A., Accordi S., Pezzi G., Dallai D., 2015 - Ten years of citizen science data collection of wetland plants in an urban protected area. Acta botanica gallica, 162 (4) : 365-373. ID PMB : 62047 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=62047 [article]

Exemplaires(1)

Cote	Localisation	Disponibilité
P0177-6	Brest	Exclu du prêt

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