GUERRINA M.

Climate change seriously threatens biodiversity, particularly in mountain ecosystems. However, studies on climate change effects rarely consider endemic species and their niche properties. Using species distribution models, we assessed the impact of climate change on the endemic flora of the richest centre of endemism in the Alps: the...

Sebbene attualmente disabitata l'isola di Bergeggi mostra tracce di presenza umana fin dall'epoca Romana, ma anche gli uliveti impiantati dai monaci in epoca medioevale. Da sempre frequentata da botanici, la piccola isola è stata oggetto di varie ricerche floristiche che permettono oggi di individuare un trend di decremento della ricchezza...

The Maritime Alps are one of the ten biodiversity hotspots in the Mediterranean and a relevant biogeographical areas in Europe because of the concentration of endemism and their possible role as long-persistence area of species. One of the most famous species of the Maritime Alps is Saxifraga florulenta Moretti, a monocarpic paleoendemic...

Analysis on the efficience of the protected areas belonginig to the European Natura2000 network for the conservation of endemic plants in a changing world climate

Understanding the breeding system, the reproductive success and long‐term demographic patterns of endemic species is fundamental to improve strategies for their conservation. Santolina ligustica Arrigoni (Asteraceae) is an endemic perennial shrub limited to a few localities in Eastern Liguria (NW Italy), and it grows on ophiolitic substratum....

Understanding the breeding system, the reproductive success and long‐term demographic patterns of endemic species is fundamental to improve strategies for their conservation. Santolina ligustica Arrigoni (Asteraceae) is an endemic perennial shrub limited to a few localities in Eastern Liguria (NW Italy), and it grows on ophiolitic substratum....

Future climate change may lead to a substantial loss of biodiversity. Endemic plants are exposed at an increased extinction risk because they are likely more dispersal-limited, less genetically variable, thus less able to rapidly adapt to climate change than species with broader distribution. In plants, global warming can lead to changes in...

Endemic species are of pivotal importance in biogeography and conservation biology, because they are exclusively distributed in a given area. The regions where several endemic species occur are called centres of endemism and are expected to be characterised by stable and often singular climatic conditions that have enable divergence to...

The genus Santolina L. (Asteraceae, Anthemidae) is distributed in the western part of the Mediterranean basin. The taxonomic history is long and complex: currently the whole genus comprises 29 taxa, most of which are divided in two complexes: the S. rosmarinifolia one, which includes eleven taxa endemic to Iberian Peninsula and North Africa and...

Within the Mediterranean basin thousands of islets show exceptionally high levels of plant diversity, playing a key role in this important global biodiversity hotspot. In this study, long‐term changes in the flora of Bergeggi, a small islet in the northern Tyrrhenian Sea, were empirically assessed. Species were assigned to two abundance classes...

Santolina ligustica, appartenente alla famiglia delle Asteraceae, è una piccola camefita che vive in ambiente strettamente mediterraneo, in zone soleggiate e ad alta rocciosità su suolo acido, solitamente caratterizzato da rocce ofiolitiche. La specie è di particolare interesse perché il suo areale è molto piccolo, è endemica della sola...

The results of the traits associated with the interaction plant-insect reveled that in Lilium pomponium the separation of sexual organs varied between individuals and populations. Neverttheless, the proportion of flower showing this separation was significantly higher in sothern groups. This suggests that populations occurring under different...

To asses the impact of seabirds on the vegetation of a Mediterranean islet, we compared the plant community of Bergeggi islet, harbouring the largest colony of yellow-legged gulls od Liguria (NW Italy)

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...

In this study we compared plant community and phenotypic variation in climatically marginal populations of Lilium pomponium L., a plantendemic to the Maritime and Ligurian Alps, spanning from the Mediterranean to Alpine habitats.

Rapid divergence, introgressive hybridisation and polyploidization often result in taxonomically and evolutionary complex groups with weakly geographically and/or morphologically defined species. In these groups, the difficulty to classify species in stable and coherent taxa strongly affects the implementation of conservation measures for...