I have found this: A) An efficient conservation planning of rare plants is often obliterate by the lack of a comprehensive integration of ecological, biological and demographic data. This observation is particularly true if we consider the paucity of informations concerning threatened Mediterranean plants. The aims of our study are to examine through two rare geophytes: (i) microhabitats differences among and within populations, (ii) their influences on demography and on reproductive success, and (iii) their importance in relation to clonal versus sexual reproduction. Leucojum nicaeense Ardoino and Leucojum fabrei Quézel & Girerd are respectively endemic from the Maritimes Alps and the Mont Ventoux (south-east France). These two endemics exhibit contrasted patterns of rarity and threats: L. fabrei comprises only 3 populations, whereas the about 20 known populations of L. nicaeense are seriously threatened by the tremendous urbanization and landscape fragmentation existing on the Côte d’Azur. Floristic and environmental data indicate that the two taxa mainly grow on xerophytic and rocky grasslands, but an higher ecological amplitude exists for L. nicaeense, which is found along a short geographical gradient but a strong ecological one. Demography of L. nicaeense seems to be influenced by the closed presence of a low ligneous stratum but L. fabrei shows no interference with regard to growth forms. Furthermore, reproductive success was positively correlated with population density for L. fabrei and with the total number individuals for L. nicaeense. Our results indicate that the importance of microhabitat-specific differences imply to consider the effects of a local scale variability. These data should allow to develop an adequate conservation planning in order to surmount the hugeness of the actual land-use changes characterizing this region. B) http://perso.club-internet.fr/v_pascal/… Ciao. Alberto Grossi Italy ---------- Initial Header ----------- From : pbs-bounces@lists.ibiblio.org To : "Pacific Bulb Society" pbs@lists.ibiblio.org Cc : Date : Tue, 16 Nov 2004 07:44:26 -0800 Subject : Re: [pbs] Leucojum fabrei > At 08:29 PM 10/24/04 +0200, you wrote: > >Hello Bulbfriends , > >Has anybody informations , pictures , sources for Leucojum fabrei ? > >Best wishes > >Hans > No one has responded to Hans request for information about Leucojum fabrei > some time ago. It isn't listed in any of my books. I looked it up in IPNI > and this is what I found. Do any of our European list members know anything > about it. Lauw, have you seen it? Does anyone grow it? > > Amaryllidaceae Leucojum fabrei Quézel & Girerd > Bull. Soc. Bot. France, Lett. Bot. 137(1): 78. 1990 > > France, Southwestern Europe, Europe > > remarks: Published as "Leucoium" > Links > > basionym of: Amaryllidaceae Acis fabrei (Quézel & Girerd)Lledó, A.P.Davis & > M.B.Crespo Pl. Syst. Evol. 246(3-4): 241. 2004 [27 July 2004] > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://www.pacificbulbsociety.org/list.php > Alberto Grossi Italy ____________________________________________________________ Libero ADSL: navighi gratis a 1.2 Mega, senza canone e costi di attivazione. Abbonati subito su http://www.libero.it/