Giacomo Rosa

Giacomo Rosa
Università degli Studi di Genova | UNIGE · Dipartimento di Scienze della terra, dell'ambiente e della vita (DISTAV)

Master of Science

About

21
Publications
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28
Citations

Publications

Publications (21)
Article
Full-text available
In order to correctly plan conservation and management of animal populations, it is fundamental to obtain reliable information on population abundance using cost-effective monitoring methods. In the case of small terrestrial vertebrates, capture-mark-recapture, removal sampling and counts of unmarked individuals have proven to be reliable technique...
Article
Full-text available
Habitat anthropization is a major driver of global biodiversity decline. Although most species are negatively affected, some benefit from anthropogenic habitat modifications by showing intriguing life-history responses. For instance, increased recruitment through higher allocation to reproduction or improved performance during early-life stages cou...
Article
Full-text available
Context - Disentangling the effect of environment and biological interaction on community composition with observational data, within the environmental filtering framework, is challenging because the two processes produce non independent results. Objectives - Adopting community N-mixture models with symmetric interactions, we aimed at estimating...
Article
Amphibians are small ectothermic vertebrates with high permeable skins that are highly constrained by environmental conditions, such as humidity and temperature. Therefore, terrestrial salamanders regulate their surface activity, including foraging, to minimize evaporative water loss. The influence of local micro-climatic factors on the foraging su...
Article
Full-text available
Spatial distribution of animals is affected by environmental and social factors, acting both at inter- and intraspecific levels, and generating patterns of segregation or aggregation. Several studies investigated age-class segregation of the European Cave Salamander Speleomantes strinatii, in underground environments, showing a clear spatial segreg...
Article
Full-text available
Reptile populations are relevant components of biodiversity in both temperate and tropical forests. However, in forest habitats reptiles are secretive and the complex structure of the environment makes it difficult to assess with confidence their abundance and density. In general, capture-mark-recapture (CMR) or distance sampling (DS) are used to e...
Article
Full-text available
Capture-mark-recapture studies that track individual amphibians are important for conservation, population dynamics, and ecological studies. One of the most widely used methods in wildlife marking is tagging with Passive Integrated Transponders (PIT). Tagging can adversely affect amphibians, however, and tag loss can affect the estimation of the de...
Article
Full-text available
The emerging amphibian disease, Batrachochytrium dendrobatidis (Bd), is driving population declines worldwide and even species extinctions in Australia, South and Central America. In order to mitigate effects of Bd on amphibian populations, high-exposed areas should be identified at the local scale and effective conservation measures should be plan...
Article
Full-text available
In vertebrates, the main tissue devoted to energy storage is the adipose tissue. In salamanders, energy reserves can also be stored in the adipose tissues of the tail. Therefore, we evaluated if energy storage in salamanders' tails is related to individual body condition, life cycle and environmental constraints. We calculated a scaled measure of t...
Article
Ecological networks, usually depicting interactions among species, have been recently down‐scaled to the individual level, permitting description of patterns of inter‐individual resource variation, that are usually hindered at the species level. Optimal diet theory (ODT) models, applied to prey‐predator systems, predict different patterns of nested...
Article
Full-text available
Context : In recent years, multiple computer algorithms, which allow us to perform photographic capture-recapture analysis, have been developed. Their massive application, also in wildlife demographic and ecological studies, is largely due to the fact that these tools are non-invasive and non-expensive. To maximise the performance of these program...
Presentation
Full-text available
We investigated the scientific literature in order to analysis and synthesis of existing knowledge of the relationships between Trachemys species and native freshwater turtles. This review should allow provide objective information to guide future conservation actions and strategic choices of environmental organizations.
Article
Full-text available
In amphibians, the study of trophic niche is important to better understand the species ecological adaptation, in particular along gradients or in heterogeneous habitats. In this framework, we analysed the trophic strategies of two populations of the endemic Corsican brook newt Euproctus montanus, one living in a Mediterranean lowland and the other...
Conference Paper
Full-text available
thanks to the Erasmus + trainsheep's project and the ''Mapping and distribution'' SEH grant, we carried out a research concerning eco-morphological and conservation aspects of the Corsican brook newt, Euproctus montanus. The present study consists in a comparison between two populations, one in the Campitellu-Bigorno Mediterranean area in the north...

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Projects

Projects (2)
Project
Evaluate the effectiveness of hierarchical models (Occupancy and N-mixture) in herpetology: - To study the ecology of amphibians and reptiles - To estimate population abundance - To inform practitioners and drive conservation plans
Project
The objective of this project is to better understand the ecological role of salamanders both as predators and as prey. In particular, the habitat selection, population abundance and the feeding ecology of terrestrial salamanders will be analysed in different species and in different conspecific populations. Moreover, by using realistic clay models the predation pressure acting upon salamanders living in different habitats will also be assessed.