• Home
  • Benjamin Allegrini
Benjamin Allegrini

Benjamin Allegrini

Engineer

About

54
Publications
18,044
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
487
Citations

Publications

Publications (54)
Article
Full-text available
We used an integrative approach combining cranio-dental characters, mitochondrial and nuclear data and acoustic data to show the presence in the genus Miniopterus of a cryptic species from the Maghreb region. This species was previously recognised as Miniopterus schreibersii (Kuhl, 1817). Miniopterus maghrebensis sp. nov. can be differentiated from...
Article
Full-text available
Animals employ an array of signals (i.e. visual, acoustic, olfactory) for communication. Natural selection favours signals, receptors, and signalling behaviour that optimise the received signal relative to background noise. When the signal is used for more than one function, antagonisms amongst the different signalling functions may constrain the o...
Article
Despite many studies illustrating the perils of utilising mitochondrial DNA in phylogenetic studies, it remains one of the most widely used genetic markers for this purpose. Over the last decade, nuclear introns have been proposed as alternative markers for phylogenetic reconstruction. However, the resolution capabilities of mtDNA and nuclear intro...
Article
Roads have a multitude of negative effects on wildlife, including bat casualties. Most bat species rely on life history traits characterised by high adult survival (associated with greater longevity) and low reproduction rates (hence slow population growth rates). Therefore, road kills are expected to negatively affect local abundance and bat popul...
Article
Arid environments are characterized by resource fluctuations that lead to spatial and temporal variability in species abundance, resulting in low species diversity. This study aimed to determine the activity patterns and habitat use by bats in an arid environment in western Algeria (Bechar region). In 2016, six sites were studied using acoustic bat...
Article
Full-text available
is a cave-dwelling bat species with a wide distribution in the western Palearctic spanning southern and central Europe, North Africa, Anatolia, the Middle East, and the Caucasus. We investigated the social structure and its effects on the genetic makeup of this species, using 10 nuclear microsatellite markers and a partial fragment of the mitochond...
Article
The development of transportation infrastructure has been identified as one of the main pressures on biodiversity. The effects of transport infrastructure are more documented for terrestrial mammals, birds and amphibians than for bats. To assess the impacts of roads on bat activity, we carried out full-night acoustic recordings of bat calls at 306...
Data
Appendix A: Additional information about material and method; Appendix B: Error risk modelling for bat species identification; Appendix C: Additional information about results
Article
Roads have a multitude of negative effects on wildlife, including their prominent role in habitat fragmentation. Habitat fragmentation particularly affects bats during their nightly movements between roosts and foraging areas. Bat overpasses are among the proposed improvements intended to reduce the fragmentation impact of roads, but they have rare...
Data
The appendix A describes the additional material and methods; the appendix B, the additional results; the appendix C, the known bat activity in the study area. They may be found in the online version of this article.
Article
1. Roads have many negative effects on wildlife, including their role in habitat fragmentation. Habitat fragmentation affects bats during their daily movements between roosts and foraging areas. As bats are protected in Europe, developers must implement specific mitigation measures that are hierarchically structured to achieve a null net impact. Ho...
Data
Appendix 1: Additional information about the study sites; Appendix 2: Scripts used for the AFPR; Appendix 3: Detailed information on bat activities for each species, site and points; Appendix 4: Bat crossings; Appendix 5: Bat crossings adjusted for bat activity and comparison of full models to a null model; Appendix 6: Bat crossings for P. pip...
Presentation
Full-text available
Biodiversity is being lost at an increased rate as a result of human activities. One of the major threats to biodiversity is infrastructural development. Although the measures taken in environmental impact assessments can limit this loss, the mitigation hierarchy to "Avoid, Reduce and Offset" impacts on biodiversity is not fully functional. Indeed,...
Presentation
Full-text available
In addition to animal mortality, roads have an important impact on habitat loss and fragmentation. In the case of bats, fragmentation could lead to loss of connectivity between colonies (i.e. potential decrease in gene flow) or between roosts and foraging areas (i.e. potential impact on breeding success). However, highways are strong economic drive...
Article
The greater mouse-tailed bat (Rhinopoma micro-phyllum Brunnich 1782) is reported for the first time in Algeria from two caves of the Boukaïs region (Bechar). Noseleaf shape, forearm and tail lengths clearly identified this species. The frequency of maximal energy of echolo-cation calls varied from 28.2 to 31.2 kHz for hand released individuals.
Poster
Over the 70 bat species of the Western Palearctic only 12 partly or mainly range within the Saharan desert boundaries. These bats may support harsh conditions of temperature (very hot in summer days, cold in winter nights), low hygrometry inducing water evaporation loss, reduced water and food availability. As a consequence, most of these species a...
Poster
Full-text available
Poster presenting my research themes (in French) - Poster présentant mes thèmes de recherches
Article
Full-text available
We report on the first modern records of Acanthodactylus spinicauda Doumergue 1901, a species until now only kown from museum specimens collected before 1899. The only known localities are in north-western Algeria in the arid zone at the transition between the northern Sahara and the southern High Plateaus. We rediscovered the species 50 km away fr...
Conference Paper
Full-text available
In ecological impact assessments, wildlife habitats sensibility is determined by experts, and is often difficult to be demonstrated from an objective point of view. However, standardized methods are lacking for producing spatial analyses compiling various ecological sensibilities on site. By linking the European protection classifications to local...
Article
Full-text available
Characterization of environmental and structural factors influencing the occurrence of bats in french Mediterranean Forest of Holm Oak - Nowadays issues of forests’ conservation are wellknown and included in ecosystem services. However in the Mediterranean Holm oak forests, knowledge about the impact of management pressure on biodiversity is notice...
Article
Full-text available
209 soMMaire Caractéristiques acoustiques des cris d'écholocation de 16 espèces de chiroptères (Mammalia, Chiroptera) du Maroc Disca et al. 2014 -caractéristiques acoustiques des cris d'écholocation de 16 espèces de chiroptères (Mammalia, Chiroptera) du Maroc
Article
Full-text available
While bats echolocation is well studied in Europe nowadays, allowing making reliable surveys with ultrasound detectors, North African data remain incomplete and even species shared by Europe and North Africa may have different sonar characteristics from either side of the Mediterranean Sea. We here present the results obtained for Moroccan bats dur...
Conference Paper
Full-text available
The isolation of populations in the Iberian, the Italian and the Balkan peninsulas during the ice ages define four main paradigms that explain the distribution of intraspecific genetic diversity in Europe, though not without exceptions. In this study we investigated the phylogeography of a wide-spread bat species, the bent-winged bat,Miniopterus sc...
Article
Full-text available
We hereby report on examinations of specimens held at the Muséum d’histoire naturelle de Nîmes (France) and conclude that Vespertilio (Myotis) latipennis (Crespon,1844) is not a synonym of Myotis myotis (Borkhausen, 1797) as currently recognised but can be identified as either Myotis emarginatus (E. Geoffroy, 1806) or Myotis cf. nattereri (Kuhl, 18...
Article
In recent years, new cryptic mammalian species have been discovered in Europe, many of which belong to the order Chiroptera. Within this order, some species such as Myotis nattereri contain several cryptic lineages/species, especially in the Mediterranean region. Here we present genetic, phylogenetic and morphological analysis on the Myotis nattere...
Article
Full-text available
New records of 18 bat species from Tunisia are reported; these include Rhinolophus ferrum-equinum, Myotis capaccinii, M. emarginatus, and M. punicus. For at least five species, our records represent the first records in nearly last 30 years and we report for the first time on the possible presence of Nyctalus leisleri in northern Tunisia. We provid...
Article
Full-text available
Mauritania is one of the countries of Africa where bat diversity is the most unrecognized (PADIAL and IBÁÑEZ, 2005). Only thirteen species are listed in the country against a potential of more than thirty (NICKEL, 2001; MICKLEBURGH, et al. 2002). In the framework of a naturalist expedition undertaken from March 24 to March 28, 2008, we surveyed a p...
Article
Here, we present a study of the Pipistrellus pipistrellus species complex, a highly diversified bat group with a radiation centre in the Mediterranean biodiversity hotspot. The study sample comprised 583 animals from 118 localities representatively covering the bats' range in the western Palearctic. We used fast-evolving markers (the mitochondrial...
Article
Full-text available
This paper deals with the observation of Striated Heron Butorides striata (Linnaeus, 1758) in Tassili n’Ajjer, Algerian Sahara. This data constitutes the first documented mention in Maghreb.
Conference Paper
Full-text available
Europe is probably the continent in which the glacial phylogeography of species have been investigated the most thoroughly. Until now, three main refugia have been identified in Europe, one in the Iberian Peninsula, one in Italy and the third one in the Balkans. In this study, we investigated the phylogeographic history of Miniopterus schreibersii...
Conference Paper
Full-text available
We present a study of the Pipistrellus pipistrellus species complex, a bat group from a very speciose genus, radiated into the mosaic of lineages in different stages of diversification and secondary contacts in the rugged environment of the Mediterranean biodiversity hotspot. We use fast-evolving markers (mitochondrial D-loop sequence and 11 nuclea...
Article
Full-text available
Contribution to the knowledge of the bats in Bou Hedma National Park (Tunisia). In May 2008, a bat survey was realised in Bou Hedma National Park (Tunisia). Two methods were used: captures and sound recording with an ultrasound detector. During this survey, only six of the eight species previously known were recovered: Pipistrellus kuhlii, Eptesicu...
Article
Full-text available
Located in the middle of the Vaucluse department, the Nesque canyon and its surroundings appear to be one of the most remarkable Natura 2000 sites in Provence, with seventeen species of Chiroptera surveyed. The Little Horseshoe Bat Rhinolophus hipposideros is well represented with two new colonies discovered. The Greater Horseshoe Bat Rhinolophus f...
Article
Full-text available
Recent data about Aredea cinerea in France (Gard)
Article
Full-text available
First data of Glareola pratincola in Vaucluse (France)

Network

Cited By

Projects

Projects (3)
Project
Biodiversity is being lost at an increased rate as a result of human activities. One of the major threats to biodiversity is infrastructural development. Although the measures taken in environmental impact assessments can limit this loss, the mitigation hierarchy to "Avoid, Reduce and Offset" impacts on biodiversity is not fully functional. Indeed, the mitigation hierarchy often uses qualitative data and does not account for the biological and/or ecological processes and their different spatial and temporal scales. The impact of roads is well documented for several biological groups but not for bats whereas they are likely to be very strongly affected. Moreover, as they are strictly protected, they should be considered in the mitigation hierarchy. Therefore, through the study of bats, I investigated the effects of roads, especially major roads, and intended to measure and quantify the magnitude of their impacts. This thesis presents different methods developed to reach this objective and which may be used by stakeholders in the field. First, I intended to determine how to process data collected through passive acoustic monitoring and how to exploit these data. Then I determined what the impacts of roads on bat populations are and I proposed a method in order to assess the mitigation measures which presume to restore bat habitat connectivity. Our main results show a significant negative effect of roads on bats foraging and commuting behaviour for several species and up to at least five kilometres away from a major road. In addition, the effect of major roads also seems to have consequences on populations’ genetics. Finally, we studied bat overpasses which are structures specifically dedicated to bats and aiming at reducing the impacts of roads by improving bats’ habitat connectivity. These structures seem to be appropriate when located in narrow ecological corridors such as hedgerows.
Project
Définir la potentialité d'accueil en gîte dans les chênaies vertes méditerranéennes pour les chiroptères arboricoles et analyser le cortège d'espèces qui exploitent (chasse/transit) ce milieu forestier.
Project
Our work presents the results of a two-year study (2015-2016) of chiroptera in a few biotopes in western Algeria, based on acoustic point detection, a total of 6 biotopes were sampled according to a Transect north-south through a border area Algero-Moroccan. The analysis of the echolocation of bats was first used for inventory purposes. In this context, our work provides a practical and easy basis for approaches applied to the study of the bats of Algeria. These new technologies could make it possible to supplement the available information on the biogeography of bats from Algeria and more widely from all of North Africa where today there is an obvious lack of data, despite some recent work. The analysis of all these data will contribute to a better knowledge of the status of the chiroptera population and to increase their knowledge of Acoustic ecology.