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Diaspore removal and potential dispersers of the rare and protected Paeonia officinalis L. in an heterogeneous landscape / Émilie Andrieu in Botanical journal of the Linnean Society, 154 (2007) 

Public Citation [article]  inBotanical journal of the Linnean Society > 154 (2007) . - 13-25 Titre : Diaspore removal and potential dispersers of the rare and protected Paeonia officinalis L. in an heterogeneous landscape Type de document : Électronique Auteurs : Émilie Andrieu (1979-) ; Max Debussche (1948-) Année de publication : 2007 Article en page(s) : 13-25 Langues : Anglais (eng) Mots-clés : Paeonia officinalis L., 1753 Résumé : Paeonia officinalis L., a rare and protected species, mostly occurs in open and semi-open habitats and is often threatened by forest and shrubland spread. To explore the still undocumented dispersal features of this species, we address the following questions. What are the relative roles of ants, small rodents, and birds as diaspore removers in open habitat and woodland? Which animal groups constitute the potential disperser assemblage and how do they shape the spatial patterns of seed dispersal? Do diaspores fit the ornithochory syndrome or do they only mimic fleshy fruits? Two experiments were performed to quantify diaspore fall and diaspore removal by animal groups, above ground and on the ground. Ants did not contribute to dispersal. In open habitats, no seed removal was detected, either on follicles or once diaspores had fallen to the ground. In woodland, diaspores were weakly removed by vertebrates on follicles and were mainly removed by rodents on the ground. As a consequence, we suggest that long-distance dispersal events are very rare, weakening the possible escape into space of populations subject to forest spread. Several traits indicate that diaspores fit the ornithochory syndrome, but other traits are strongly reminiscent of mimetic diaspores deceiving bird dispersers. Lien pérenne : DOI : 10.1111/j.1095-8339.2007.00636.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=143453 Andrieu, Émilie (1979-), Debussche, Max (1948-) 2007 Diaspore removal and potential dispersers of the rare and protected Paeonia officinalis L. in an heterogeneous landscape. Botanical journal of the Linnean Society, 154: 13-25.

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