References of "Libois, Roland"
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See detailAnalyse des potentialités d'accueil du lynx boréal (Lynx lynx) dans l'est de la province de Liège (Belgique)
Thiry, Violaine; Schockert, Vincianne ULiege; Libois, Roland ULiege et al

in Rosoux, René; de Bellefroid, Marie des Neiges; Baillon, Jacques (Eds.) et al Lynx... le grand retour ? (2011)

The fist lynx were seen in eastern Belgium at the end of the 1990s. Since then, both sightings and tracks have been recorded there and in the Ardenne (south east Belgium). Whether this presence indicates ... [more ▼]

The fist lynx were seen in eastern Belgium at the end of the 1990s. Since then, both sightings and tracks have been recorded there and in the Ardenne (south east Belgium). Whether this presence indicates a spontaneous return of individuals deriving from the population reintroduced in Germany or results from illicit releases, it raises the question of the suitability and the carrying capacity of habitats in an area of dense human occupation. Using two software programs, a mapping model to assess habitat characterization, drawn from relevant criteria for this species, was tested to estimate the potential host of the study area, via the determination of areas of suitable habitats, and the dispersion potential of the species, through the identification of the most viable dispersal corridors. The findings of the study (multi criteria analysis of potential host of habitats, identification of corridors of lowest cost, estimation of the potential population...), compiled on the basis mapping model and simulations, suggest that a return of the lynx in Wallonia may be sustainable if supported and managed wisly by the regional administrative services. [less ▲]

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See detail19. Oiseaux
Lougbegnon, Toussaint; Libois, Roland ULiege

in Neuenschwander, Peter; Sinsin, Brice; Goergen, Georg (Eds.) Protection de la nature en Afrique de l'Ouest: une liste rouge pour le Bénin (2011)

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See detailPremière approche du choix des proies et de la stratégie alimentaire chez le balbuzard pêcheur en France continentale
Rosoux, René; Libois, Roland ULiege; Schweyer, Jean Baptiste et al

in Recherches Naturalistes en Région Centre (2010), 18

La population nicheuse de balbuzards pêcheurs en région Centre, principalement établie en forêt d'Orléans et en Sologne, a fait l'objet d'une prémière étude sur le choix des proies et la stratégie ... [more ▼]

La population nicheuse de balbuzards pêcheurs en région Centre, principalement établie en forêt d'Orléans et en Sologne, a fait l'objet d'une prémière étude sur le choix des proies et la stratégie alimentaire. L'analyse a été menée sur un échantillon d'une quinzaine de couples. Les premiers résultats montrent que les rapaces consomment une large gamme de poissons, évaluéenà plus de 20 espèces. Quels que soient la méthode utilisée et le nid étudié, ce sont les cyprinidés qui constituent la grande majorité des proies. En période d'étiage, les espèces de poisson de fond viennent également enrichir le régime alimentaire en raison de la faible profondeur de l'eau. [less ▲]

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See detailBase de données mortalité et étude du régime alimentaire (Balbuzard)
Rosoux, René; Libois, Roland ULiege; Schweyer, Jean Baptiste

Learning material (2010)

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See detailÉtude du régime et de la sélectivité alimentaire du grand cormoran (Phalacrocorax carbo) sur le lac Kivu (R.D. Congo)
Musema Bahizire, Altor; Libois, Roland ULiege

in Annales des Sciences et Sciences Appliquées de l'Université Officielle de Bukavu (2010), 2

This contribution intends to give a preliminary view of the diet of the Cormorant on the lake Kivu. Fifty pellets were collected from August to October 2004 in a colony situated in Bukavu and analysed. A ... [more ▼]

This contribution intends to give a preliminary view of the diet of the Cormorant on the lake Kivu. Fifty pellets were collected from August to October 2004 in a colony situated in Bukavu and analysed. A reference collection of fish skull bones was also prepared and correlations between the length of some characteristic bones and the total length of the fish were computed, allowing the assessment of the length of each prey identified in the pellets. The cormorants eat mainly Haplochromis species (either in relative abundance or occurrences) but the biomass intake is dominated by the genera Tilapia and Oreochromis (together: 65 %). The importance of catfish (Clarias sp.) or barbels (Barbus sp.) is very small (< 4%, whatever the expression of the results). The sardine Limnothrissa miodon appears in 1 out of 5 pellets but its contribution in terms of biomass is negligible. Comparing the diet with the available resources, it appears that the cormorant is an opportunistic predator, taking almost all the available taxa (except Raiamas moorii) without selecting a particular one, except the big cichlids (genus Tilapia and Oreochromis). However, more than 90% of its preys are small fish measuring less than 10 cm. [less ▲]

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See detailEtat de la biodiversité: les mammifères
Schockert, Vincianne ULiege; Libois, Roland ULiege

Learning material (2010)

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See detailMartin pêcheur d'Europe, Alcedo atthis
Dehem, Christophe; Hallet, Catherine; Libois, Roland ULiege

in Jacob, Jean Paul; Dehem, Christophe; Burnel, André (Eds.) et al Atlas des oiseaux nicheurs de Wallonie 2001/ 2007 (2010)

The kingfisher is widespread in Wallonia but is missing locally in middle Belgium and in higher Ardenne. The field prospection for the atlas took place in a favorable climatic context; the current ... [more ▼]

The kingfisher is widespread in Wallonia but is missing locally in middle Belgium and in higher Ardenne. The field prospection for the atlas took place in a favorable climatic context; the current population, estimated at 450 650 pairs, reflects probably the saturation of the habitat. The highest densities are found along large rivers, with important fishing ressources and numerous nesting sites (Lesse, Ourthe, Semois, Viroin). The limiting fator seems to be the lack of nesting sites. [less ▲]

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See detailEtude de la statégie alimentaire du balbuzard pêcheur
Rosoux, René; Libois, Roland ULiege; Schweyer, Jean Baptiste

Learning material (2010)

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See detailDe la cerise au sanglier: contribution à l'étude du régime alimentaire de la fouine, Martes foina (Erxleben 1777) en Belgique
Lambinet, Clotilde ULiege; Libois, Roland ULiege

in Naturalistes Belges (Les) (2010), 91

The study of the diet of an animal contributes to a better knowledge of its ecology. The present study consists of the analysis of five faeces samples collected in various environments as well as 26 ... [more ▼]

The study of the diet of an animal contributes to a better knowledge of its ecology. The present study consists of the analysis of five faeces samples collected in various environments as well as 26 stomach contents, to underline the various food resources consumed by the stone marten. The results obtained overlap rather well the data of the literature. Therefore, it allows to strenghten the researches carried out in the bordering countries. The conclusions of the present study are the following ones: the stone marten is an animal polyphagous and non-specialized. Its food spectrum covers as well the animal kingdom as the vegetable one. Furthermore, samples allowed to point out seasonal variations in the diet. Also, net differences are observed between urban and rural environments. Finally, the variety and the relative occurrence of the various elements gathered show how much the stone marten is an opportunistic animal which adapts itself to the environmental resources [less ▲]

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See detailLes commaunautés d'oiseaux locales dans les mosaïques de végétation du sud du Bénin
Lougbégnon, Olou Toussaint; Codjia, J.T.C; Libois, Roland ULiege

in Annales des Sciences Agronomiques du Bénin (2009), 12(1), 85-114

We analysed the spatial frequencies of birds and their distributions across three types of habitats (forests, plantations and various fallows) in the vegetation mosaic in the south of Benin from a total ... [more ▼]

We analysed the spatial frequencies of birds and their distributions across three types of habitats (forests, plantations and various fallows) in the vegetation mosaic in the south of Benin from a total of 45 monitoring stations. 167 species belonging to 40 families were inventoried, the forest having 153 species and fallows and plantations having each 99 species. The similarity index of Jaccard showed 44.0% affinity between forests and flantations, 43.1% between forest and fallows, and 75.5% between forest and fallows. The analysis in main composent and ascending hierachical classification identified three local bird communities, namely for forests, plantations and fallows, ubiquitous in three areas and, respectively, aligned according to their need for intact forest or their propensity to tolerate changes in vegetation/ deforstation. [less ▲]

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See detailQuatre siphonaptères (Siphonaptera) nouveaux pour la faune de Belgique
Libois, Roland ULiege

in Bulletin de la Société royale belge d'Entomologie (2009), 145

This short note reports the circumstances where four fleas species, not yet publishid in Belgium, where recorded

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See detailA relict bank vole lineage highlights the biogeographic history of the Pyrenean region in Europe
Deffontaine Deurbroeck, Valérie ULiege; Ledevin, Ronan; Fontaine, Michaël ULiege et al

in Molecular Ecology (2009)

The Pyrenean region exhibits high levels of endemism suggesting a major contribution to the phylogeography of European species. But, to date, the role of the Pyrenees and surrounding areas as a glacial ... [more ▼]

The Pyrenean region exhibits high levels of endemism suggesting a major contribution to the phylogeography of European species. But, to date, the role of the Pyrenees and surrounding areas as a glacial refugium for temperate species remains poorly explored. In the current study, we investigated the biogeographic role of the Pyrenean region through the analyses of genetic polymorphism and morphology of a typical forest-dwelling small mammal, the bank vole (Myodes glareolus). Analyses of the mitochondrial cytochrome b gene and the third upper molar (M(3)) show a complex phylogeographic structure in the Pyrenean region with at least three distinct lineages: the Western European, Spanish and Basque lineages. The Basque lineage in the northwestern (NW) Pyrenees was identified as a new clearly differentiated and geographically localized bank vole lineage in Europe. The average M(3) shape of Basque bank voles suggests morphological differentiation but also restricted genetic exchanges with other populations. Our genetic and morphological results as well as palaeo-environmental and fossils records support the hypothesis of a new glacial refugium in Europe situated in the NW Pyrenees. The permissive microclimatic conditions that prevailed for a long time in this region may have allowed the survival of temperate species, including humans. Moreover, local differentiation around the Pyrenees is favoured by the opportunity for populations to track the shift of the vegetation belt in altitude rather than in latitude. The finding of the Basque lineage is in agreement with the high level of endemic taxa reported in the NW Pyrenees. [less ▲]

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See detailLes mammifères non volants de la commune de Fernelmont
Libois, Roland ULiege; Le Proux de la Rivière, Bettina

in Saintenoy Simon, Jacqueline (Ed.) Le patrimoine d'une commune rurale: Fernelmont (2008, March)

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See detailRôle bioindicateur de l'avifaune dans la dynamique ecologique des mosaïques des milieux naturels terrestres du sud Bénin
Lougbegnon, Olou; Codjia, J T C; Libois, Roland ULiege

in Revue des sciences de l'environnement Univ. de Lomé (2008), 4

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See detailDiet and food preference of the waterbuck (Kobus ellipsiprymnus defassa) in the Pendjari National Park, Benin
Kassa, Barthélemy; Libois, Roland ULiege; Sinsin, Brice

in African Journal of Ecology (2008), 46(3), 303-310

This study investigated composition and selectivity in diet for waterbuck in the Pendjari National Park in northwestern Benin, through the use of micrographic analysis of faecal samples. Three plant ... [more ▼]

This study investigated composition and selectivity in diet for waterbuck in the Pendjari National Park in northwestern Benin, through the use of micrographic analysis of faecal samples. Three plant species (Panicum anabaptistum, Echinochloa stagnina and Andropogon gayanus) were regularly consumed all year round. Meanwhile, three other species (i.e., Hyparrhenia involucrata, Acroceras amplectens and Oryza barthii) are mostly found in its diet during the beginning of the rainy season. During the dry season, long life grasses (>40%) and tree forage (about 35%) were the most dominant life form in the diet. On the contrary at the beginning of the rainy season, annual species (> 50%) were dominant. In conclusion, the waterbuck has a grazer regime when plant species are abundant and a mixed diet during the dry season. Waterbuck’s food niche breath, defined by Hespenheide [Ecology and Evolution of communities. Harvard Univ. Press, 1975], was lower than 1, implying this antelope does not eat all food categories in a proportional way. Shannon diversity index showed that the diet was more diversified during the rainy season and less diversified at the end of the dry season. Based on [Ecology, 64 (1983), 1297] diet selectivity index, waterbuck exerted a positive selection on the major graminaceous species. [less ▲]

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See detailThe diet of the serotine bat: A Comparison between rural and urban environments
Kervyn, Thierry; Libois, Roland ULiege

in Belgian Journal of Zoology (2008), 138(1), 41-49

The diet of four maternity colonies of serotine bats in Southern Belgium was investigated by analysing faecal pellets collected from beneath the roost throughout the activity season. Their diet is ... [more ▼]

The diet of four maternity colonies of serotine bats in Southern Belgium was investigated by analysing faecal pellets collected from beneath the roost throughout the activity season. Their diet is composed of Coleoptera Melolonthidae (Melolontha sp., Amphimallon sp., Rhizotrogus sp., Serica brunnea), Coleoptera Scarabaeidae (Aphodius sp., Geotrupes sp.), Coleoptera Carabidae, Diptera Tipulidae, Diptera Chironomidae, Lepidoptera, Hemiptera Pentatomidae, Hymenoptera Ichneumonoidea Ophionidae, Trichoptera and Arachnida. <br />The diet of an urban colony of serotine bats was broadly the same as the diets of three rural colonies. Though some qualitative and quantitative variations were observed between study sites, the main source of variation in the diet was the seasonal availability of potential prey. <br />The prominence of agriculture-dependant prey (chafers in mid summer and Aphodius beetles in late summer and autumn) was observed at all study sites. Consequently, dietary breadth and diversity is smaller during these periods. [less ▲]

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See detailA Critical Study of Primate Reintroduction Projects in the Mesoamerican Region.
Martin, Sarah ULiege; Huynen, Marie-Claude ULiege; Libois, Roland ULiege

Poster (2008)

Very little is known about primate reintroduction projects in Mesoamerica. The aim of this study was to focus on existing projects concerning primate re-introductions, conservation-introduction ... [more ▼]

Very little is known about primate reintroduction projects in Mesoamerica. The aim of this study was to focus on existing projects concerning primate re-introductions, conservation-introduction, translocation, as well as on reinforcement-supplementation of parallel initiatives. In order to create a database, a survey was sent to a panel of scientists in Mexico, Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica and Panama, and we visited five projects in Costa Rica from March to August 2006. A total of 19 projects were found: Costa Rica hosted the higher number (7) while Salvador and Nicaragua did not host any. Fourteen out of those 19 projects concerned confiscated animals. Six of the 7 Costa Rican projects used confiscated primates; the other ones came from wild populations or were born in captivity. Alouatta palliata and Ateles geoffroyi are the most common species subject to reintroduction effort in the Mesoamerican region. A wide range of factors seem to influence reintroduction success such as: the project’s budget, the release site, the mode of transportation, the caging setting, the support from local communities, the presence of environmental education programs, but also the age of primates, etc. Each project seems to work as a completely separated entity, with its own definition of reintroduction success and its own policy. There’s no communication between the projects, no matter if they are based in the same country or work on the same species. A reintroduction guideline for this region should be established as well as a regional network coordinating the information. [less ▲]

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See detailEvidence of a highly complex phylogeographic structure on a specialist river bird species, the dipper (Cinclus cinclus).
Hourlay, F.; Libois, Roland ULiege; D'Amico, F. et al

in Molecular Phylogenetics & Evolution (2008), 49(2), 435-44

This study details the phylogeographic pattern of the white-throated dipper (Cinclus cinclus), a Palearctic, temperate, passerine bird that is exclusively associated with flowing water. Our results reveal ... [more ▼]

This study details the phylogeographic pattern of the white-throated dipper (Cinclus cinclus), a Palearctic, temperate, passerine bird that is exclusively associated with flowing water. Our results reveal a complex phylogeographic structure with at least five distinct lineages for the Western Palearctic region. As for many species of the Western Palearctic fauna and flora, this genetic structure is probably linked to the isolation of populations in different southern refuges during glacial periods. Furthermore, the isolation of populations in Scandinavia and/or Eastern regions, but also in Morocco and probably in Corsica, was accentuated by ecological and biogeographic barriers during Quaternary interglacial periods. During glacial periods, Italy, Sicily and the Balkano-Carpathian region acted as major refuge zones for the dipper. At the end of the last ice age, Western Europe was repopulated by dippers from an Italian refuge, while Eastern Europe was recolonised by Balkano-Carpathian birds. A large contact zone between these two lineages was evidenced and extends from Luxembourg to Hungary. Finally, our results indicate the need to clarify the taxonomic status of the dipper, especially concerning the European subspecies whose validity appears uncertain. [less ▲]

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See detailGeography and host biogeography matter for understanding the phylogeography of a parasite.
Nieberding, Caroline M. ULiege; Durette-Desset, Marie-Claude; Vanderpoorten, Alain ULiege et al

in Molecular Phylogenetics & Evolution (2008), 47(2), 538-54

The co-evolution between hosts and parasites has long been recognized as a fundamental driver of macro-evolutionary patterns of diversification. The effect of co-differentiation on parasite ... [more ▼]

The co-evolution between hosts and parasites has long been recognized as a fundamental driver of macro-evolutionary patterns of diversification. The effect of co-differentiation on parasite diversification is, however, often confounded by underlying geographic patterns of host distribution. In order to disentangle the confounding effects of allopatric versus host speciation, the mitochondrial cytochrome b (cyt b) gene was sequenced in seventy individuals of the parasitic nematode genus Heligmosomoides sampled in the six Apodemus mice species common in the western Palearctic region. The nuclear internal transcribed spacers (ITS) 1 and 2 were also sequenced in fifteen parasites to confirm the mitochondrial data. All lineages differentiated according to a geographic pattern and independently from the sampled host species. This suggests that host speciation did not involve concurrent parasite speciation. However, the geographic distribution range of some parasite lineages mirrors that of A. sylvaticus lineages in SW Europe, and that of A. flavicollis lineages in the Balkans and in the Middle East. Thus, regional co-differentiation likely occurred between the parasite and the two sister Apodemus hosts in different parts of their distribution range. We suggest that differences in regional abundances of A. sylvaticus and A. flavicollis are responsible for generating this pattern of regional co-differentiation. This study highlights the importance of integrating both geography and biogeographic information from potential hosts to better understand their parasite phylogeography. [less ▲]

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See detailGenetic pattern of the recent recovery of European otters in southern France
Janssens, Xavier; Fontaine, Michael C; Michaux, Johan ULiege et al

in Ecography (2008), 31(2), 176-186

We investigated how landscape affects the population genetic structure and the dispersal of the elusive European otter Lutra lutra in a contemporary colonization context, over several generations and at ... [more ▼]

We investigated how landscape affects the population genetic structure and the dispersal of the elusive European otter Lutra lutra in a contemporary colonization context, over several generations and at the level of hydrographic basins. Our study area included 10 basins located in the Cevennes National Park (CNP), at the southern front of the natural otter recovery in France. Each basin comprised 50 to 300 km of permanent rivers that were surveyed for otter presence from 1991 to 2005. Faecal samples collected in 2004 and 2005 in this area were genotyped at 9 microsatellite loci, resulting in the identification of 70 genetically distinct individuals. Bayesian clustering methods were used to infer genetic structure of the populations and to compare recent gene flow to the observed colonization. At the regional level, we identified 2 distinct genetic clusters (NE and SW; FST=0.102) partially separated by ridges, suggesting that the CNP was recolonized by 2 genetically distinct otter populations. At the basin level, the genetic distance between groups of individuals in different basins was positively correlated to the mean slope separating these basins. The probable origins and directions of individual movements (i.e. migration between clusters and basin colonization inside clusters) were inferred from assignment tests. This approach shows that steep and dry lands can stop, impede or divert the dispersal of a mobile carnivore such as the otter. [less ▲]

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