ZECCA G.

Previous studies have indicated that several plant species had shown remarkable resistance to Pleistocene climate changes and survived the Last Glacial Maximum in scattered ice-free refugia within the European Alps and peripheral areas nearby. The 'Expansion–Contraction' model has been proposed to describe the responses of organisms to...

Primula allionii is endemic to a tiny area of the Maritime Alps and has one of the narrowest distribution ranges in this hotspot of biodiversity. Phylogeographical patterns in P. allionii were studied using plastid DNA markers and dominantly inherited markers (AFLP and ISSR) to verify any admixture between P. allionii and the sympatric P....

Three main hypotheses may explain the distribution of alpine and arctic endemic plants: a) distribution reduction follewed by a post-glacial expansion; b) distribution expansion follewed by a post-glacial reduction; c) stable distribution with ocal bufferig from extreme environmental effects. The theree hypotheses were tested in recent years on...

Brassica rupestris Raf. is a chasmophyte species that includes two subspecies both endemic to Central-Western Sicily (Italy). ISSR were used to detect the genetic diversity within and among eight populations representative of the species' distribution range. High levels of genetic diversity were revealed both at population (PPB = 53.88%, HS =...

Primi risultati sulla fologeografia di due specie endemiche silicicole delle Alpi Marittime

I semi, che sono immagazzinati nelle banche dei semi per fini conservativi, quanto effetivamente rispecchiano la diversità genetica delle popolazioni e della specie? Sono qui proposti alcuni quesiti che mettono in dubbio l'efficacio di tali interventi