Conference Presentations by Dario Domeneghetti
INTRODUZIONE La riduzione e lo shift degli areali di distribuzione, osservati per moltissime spec... more INTRODUZIONE La riduzione e lo shift degli areali di distribuzione, osservati per moltissime specie negli ultimi decenni, sono verosimilmente imputabili in gran parte al cambiamento climatico in atto (Parmesan 2006). Le farfalle rappresentano uno tra i migliori indicatori del cambiamento climatico: hanno, infatti, un ciclo vitale breve ed esigenze ecologiche relativamente ristrette. Obiettivo del presente lavoro è stata la realizzazione di modelli predittivi delle modificazioni future dell'areale potenziale in sei specie di Ropaloceri (tutte le specie, presenti in Italia centrale, inserite negli allegati II e IV della Direttiva 92/43/CEE: Maculinea arion, Melanargia arge, Euphydryas provincialis, Parnassius apollo, P. mnemosyne, Zerynthia cassandra). Si è inoltre valutata la capacità di tutela delle specie in esame da parte delle aree protette presenti in Italia centrale.
Papers by Dario Domeneghetti
New tools are available for biogeographic researches such as the modelistic approach called "... more New tools are available for biogeographic researches such as the modelistic approach called " species distribution modeling " (SDMs). is kind of approach is very useful to investigate several issues in biogeography and conservation biology and in human introduced species too. In this research we applied this methodology to two case study among the Italian Reptiles fauna (Mediodactylus kotschyi and Zamenis situla) to study how ecological constraints may have influenced the distribution of the two species. Bioclimate variables were not adequate to describe the narrow distribution of the species, as models predict high potential suitable area in central and southern Italy where species were never recorded. e Italian distribution of Z. situla is probably constrained by the congeneric Z. lineatus, whereas about the distribution of M. kotschyi, with current knowledge, wasn't possible to discriminate among a recent introduction or competitive exclusion. Riassunto. La ricerca ...
Rendiconti Lincei, 2015
ABSTRACT The Castelporziano estate, a former game reserve along the Tyrrhenian coast near Rome, i... more ABSTRACT The Castelporziano estate, a former game reserve along the Tyrrhenian coast near Rome, is a conserved patch of pristine woodland, in which several species of the Odonates breed in numerous small ponds and a few rivulets. The odonate species of Castelporziano have been recorded since the 1930s, with an in-depth survey carried out in 1997-1998. The present, additional survey on the odonate species of Castelporziano aims at contributing to long-term ecological research, by assessing variations in odonate fauna up to the present, and linking them to environmental changes. The presence of adult Odonata species was assessed in the field by two observers at 20 water bodies (ponds and other sites) from mid-March to early November 2012. The presence of shade, riparian and submerged vegetation, fish and the number of drying-up events during the past decade were also recorded. Results showed a small reduction in the number of odonate species for the entire estate, with several qualitative changes in comparison with previous data. On the contrary, a site-specific analysis of changes from 1997-1998 to 2012 revealed a significant considerable reduction in the average number of species. This was linked to a decrease in riparian and submerged vegetation. Drying-up events did not appear to be a crucial factor, and fish and shade were essentially unchanged. In conclusion, the Castelporziano water environment seems to have deteriorated, probably as a consequence of the trampling by wild ungulates in woodland ponds.
Allochthonous water frogs (gen. Pelophylax) have been repeatedly introduced in several European c... more Allochthonous water frogs (gen. Pelophylax) have been repeatedly introduced in several European countries, causing dramatic consequences for the conservation of indigenous taxa. In Italy, invasive populations are known for northern regions, where they were introduced mainly for edible and scientific purposes. Here, we report the first detection of an alien population of water frogs in Central Italy, along the Resina valley (Umbria). Genetic analysis of the mitochondrial ND3 gene polymorphism assigned some specimens to two different Pelophylax ridibundus clades widespread in Central and Eastern Europe. By contrast, two samples matched the mitochondrial DNA (mtDNA) sequence of Pelophylax lessonae bergeri, an autochthonous taxon widespread in Central Italy, suggesting possible hybridization between alien and indigenous frogs. Finally, the specific haplotype of Pelophylax shqipericus, the Albanian Pool Frog, was also identified according to mtDNA polymorphism. This record, firstly reported for Italy, poses concerns for the conservation of this cryptic taxon, suggesting that international water frog trade may involve also particularly endangered species.
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Conference Presentations by Dario Domeneghetti
Papers by Dario Domeneghetti