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Frédéric Blanc

Frédéric Blanc
CEN Occitanie, France, Toulouse

About

29
Publications
7,074
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256
Citations
Introduction
Frédéric Blanc currently works at CEN Midi Pyrénées, France, Toulouse. Frédéric does research in Evolutionary Biology, Ecology and Zoology. Their most recent publication is 'Novel insights into the diet of the Pyrenean desman (Galemys pyrenaicus) using next-generation sequencing molecular analyses'.

Publications

Publications (29)
Conference Paper
Full-text available
Référence à citer: Prud'homme F. (coord.), 2025. Compte-rendu des premières rencontres internationales biodiversité des lacs des Pyrénées. Loudenvielle, Hautes-Pyrénées, France. 13 et 14 mai 2024. Conservatoire botanique national des Pyrénées et de Midi-Pyrénées et GIS Lacs des Pyrénées. 29 pages. ---------------------------------------------------...
Article
Les faibles connaissances sur le comportement du Desman des Pyrénées Galemys pyrenaicus (É. Geoffroy Saint Hilaire, 1811) en réponse aux variations hydrauliques nous ont amenés à mettre en œuvre trois opérations de radiopistage sur deux tronçons court-circuités de cours d’eau ariégeois. Les opérations ont eu lieu en octobre 2014 et mai 2015 sur l’A...
Article
Full-text available
Assessing protected areas (PA) effectiveness for aquatic species is essential, as they are frequently recognised ineffective for freshwater ecosystems. By using spatially correlated replicates, the occupancy model with Markovian spatial dependence is well-suited to network-constrained environments. We applied this model to a semi-aquatic mammal, Ga...
Article
Full-text available
Espèce protégée et en régression sur l’ensemble de son aire de répartition, le Desman des Pyrénées Galemys pyrenaicus (É. Geoffroy Saint-Hilaire, 1811) reste une espèce mal connue malgré les programmes d’actions en faveur de sa conservation mis en œuvre en France depuis 2010. Le manque de connaissance sur la densité des populations et les déplaceme...
Article
Full-text available
À l’heure où la prise en compte du Desman des Pyrénées, Galemys pyrenaicus É. Geoffroy Saint-Hilaire, 1811 dans toutes les procédures environnementales devient la norme, il convient de proposer des protocoles efficaces pour permettre le suivi de l’espèce. Outre la recherche de fèces, d’autres techniques ont été testées en France ces dernières année...
Article
Full-text available
Pyrenean lakes are home to a specific yet poorly known biodiversity, particularly because of the access conditions (approach walk and aquatic environment). Investigations were necessary so that conservation and/or management programmes on the fauna and flora of the lakes could be envisaged on the basis of more complete, robust and shared knowledge....
Article
Full-text available
The Pyrenean desman, a threatened, semiaquatic mammal, is considered a specialist predator feeding on aquatic benthic invertebrates. This categorization comes from visual identification of prey in scat or gut contents, often based on a limited number of samples and locations. We combined diet analyses using next-generation sequencing methods with a...
Article
Full-text available
The implementation of effective and appropriate protection actions is frequently hindered by lack of thorough knowledge on species ecology especially in the case of endemic, vulnerable and elusive species. Using a recently updated and unpublished dataset describing the spatial distribution of the Pyrenean desman ( Galemys pyrenaicus ) in its northe...
Article
Full-text available
Species distribution models (SDMs) are the main tool to predict global change impacts on species ranges. Climate change alone is frequently considered, but in freshwater ecosystems, hydrology is a key driver of the ecology of aquatic species. At large scale, hydrology is however rarely accounted for, owing to the lack of detailed stream flow data....
Data
a. Histograms of the selected variables for the sites sampled in the historical (white; 637 sites) and current (grey; 1222 sites) surveys. b. Mean (± standard deviation) values of environmental variables in historical and current periods at sampling sites. (DOCX)
Data
Environmental variables for the historical period and percentage of change between the historical and current periods. (DOCX)
Data
Default and calibrated values of snow parameters used to calibration SWAT simulations. (DOCX)
Data
Observed presence and absence of the Pyrenean desman for the historical and current surveys. (DOCX)
Data
Location of the gauging stations used to calibrate and validate the SWAT simulations. (DOCX)
Data
Comparison of the values of the environmental variables between the historical and current periods. (DOCX)
Poster
Full-text available
The Pyrenean desman (Galemys pyrenaicus) is a small-endangered semi-aquatic mammal endemic to the Pyrenean Mountains and to the northern half of the Iberian Peninsula whose ecology and biology are still poorly known. Its ecological relationships with other semi aquatic mammals like the aquatic shrew (Neomys fodiens) or the European otter (Lutra lut...
Article
The Pyrenean desman (Galemys pyrenaicus) is a small semi-aquatic mammal endemic to the Pyrenean Mountains and the northern half of the Iberian Peninsula. This species is currently considered as vulnerable in the IUCN Red List and has been suffering from habitat loss and fragmentation for decades but little is known about the impact of water flow mo...
Article
The Pyrenean desman (Galemys pyrenaicus) is a small, semiaquatic mammal endemic to the Pyrenean Mountains and the northern half of the Iberian Peninsula where it lives in cold and well-oxygenated flowing mountain streams. This species is currently classified as vulnerable on the IUCN Red List and has been undergoing habitat loss and fragmentation f...
Article
The Pyrenean desman (Galemys pyrenaicus) is a small endangered semi-aquatic mammal endemic to the Pyrenean Mountains and to the northern half of the Iberian Peninsula whose ecology and biology are still poorly known. The aim of this study was to identify Pyrenean desman faeces and to analyze its diet from this material using next-generation sequenc...
Article
Full-text available
The Pyrenean desman is a vulnerable mammal species endemic to Pyrenees and the northern Ibe-rian Peninsula. The presence of this elusive species can be most easily detected by sampling its faeces. However, these faecal samples can be confused with those of other vertebrate species living in the same habitats. This study provides two easy and reliab...
Article
Full-text available
Occupancy estimates can inform biodiversity managers about the distribution of elusive species, such as the Pyrenean desman Galemys pyrenaicus, a small semi-aquatic mammal that lives along streams. Occupancy models rely on replication within a sampling site and provide estimates of the probability of detection. However, we still do not know how occ...
Article
Full-text available
Environment in general, and even more so Wildlife management, are fields in which the need and the claim for expertise are both very strong and distributed. This is partly due to the intricate issues resulting from various scientific disciplines. The temptation to seek in science for an objective guaranty for the rightfulness of a public policy thu...

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