Le blaireau (Meles meles L.) dans le Jura suisse: succès de capture, paramètres démographiques et ectoparasites

San, Emmanuel Do Linh; Ferrari, Nicola; Jm, Weber

doi:10.5962/bhl.part.80199

Cited by 10 publications

(5 citation statements)

References 27 publications

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“…During the day, badgers rested in 46.5% of the cases in a sett, whereas 124% of the locations corresponded to animals resting on surface. Overground daybeds were generally located in rape, wheat and maize fields (Do Linh San, 2004). These results contrast with data collected in a nearby semi-rural area (Saint-Blaise-Cressier-Thielle), where no badger was found resting above ground during the day .…”

Section: And Discussioncontrasting

confidence: 89%

“…These observations are in agreement With habitat selection data of foraging badgers in the study area. The same radio-tracked individuals indeed positively selected rape, wheat and maize plantations during their feeding periods (Do Linh San, 2004). Therefore, it seems that the choice of nocturnal resting sites is largely influenced by foraging activity.…”

Section: And Discussionmentioning

confidence: 76%

“…Indeed, in summer, badgers showed a tendency to start and end their APS earlier (in average 0.50 h) than during other seasons. In addition, emergences and returns by daylight were almost exclusively registered during the dry summertime, When night length 1s shortest, food availability low (Fischer et al, 2005) and vegetation cover denser (Do Linh San, 2004).…”

Section: And Discussionmentioning

confidence: 98%

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Circadian activity patterns and nocturnal resting sites of Eurasian badgers (Meles meles L.) in a rural area of western Switzerland

San¹,

Ferrari²,

Weber³

2010

Revue Suisse De Zoologie.

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Section: And Discussioncontrasting

confidence: 89%

Section: And Discussionmentioning

confidence: 76%

Section: And Discussionmentioning

confidence: 98%

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Circadian activity patterns and nocturnal resting sites of Eurasian badgers (Meles meles L.) in a rural area of western Switzerland

San¹,

Ferrari²,

Weber³

2010

Revue Suisse De Zoologie.

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“…classified as annex, subsidiary and outlier setts [ 49 ]). Classifying these intermittently occupied setts in the field requires multiple visits and follow up, so we grouped them as ‘secondary’ setts [ 17 , 50 ].…”

Section: Methodsmentioning

confidence: 99%

Breaking down population density into different components to better understand its spatial variation

et al. 2021

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Background Population size and densities are key parameters in both fundamental and applied ecology, as they affect population resilience to density-dependent processes, habitat changes and stochastic events. Efficient management measures or species conservation programs thus require accurate estimates of local population densities across time and space, especially for continuously distributed species. For social species living in groups, population density depends on different components, namely the number of groups and the group size, for which relative variations in space may originate from different environmental factors. Whether resulting spatial variations in density are mostly triggered by one component or the other remains poorly known. Here, we aimed at determining the magnitude of the spatial variation in population densities of a social, group-living species, i.e. the European badger Meles meles, in 13 different sites of around 50 km2 across France, to decipher whether sett density, group size or proportion of occupied sett variation is the main factor explaining density variation. Besides the intrinsic factors of density variation, we also assessed whether habitat characteristics such as habitat fragmentation, urbanisation, and resource availability, drove both the spatial variation of density components and local population densities. Results We proposed a new standardised approach combining use of multiple methods, namely distance sampling for estimating the density of occupied sett clusters, i.e. group density, and camera and hair trapping for genetic identification to determine the mean social group size. The density of adult badgers was on average 3.8 per km2 (range 1.7–7.9 per km2) and was positively correlated with the density of sett clusters. The density of adult badgers per site was less related to the social group size or to the proportion of occupied sett clusters. Landscape fragmentation also explained the spatial variation of adult badger density, with highly fragmented landscapes supporting lower adult densities. Density components were linked differently to environmental variables. Conclusions These results underline the need to break down population density estimates into several components in group-living species to better understand the pattern of temporal and spatial variation in population density, as different components may vary due to different ecological factors.

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“…As a matter of fact, the spatial distribution of latrines observed in the Val-de-Ruz is different to what has been observed elsewhere (England: Roper et al, 1986;Ireland: O'Corry-Crowe et ai, 1993). As far as we know, there are only three studies describing the same pattern of distribution: Graf et al (1996) andDo Linh San (2002) in two Swiss rural areas and in a British urban habitat. According to the latter, this distribution could be due to the heterogeneity and the unpredictability of food resources in the urban habitat and the authors argue that the same situation could be observed in rural areas with low badger densities.…”

Section: Author(s)mentioning

confidence: 99%

Distribution of badger setts and latrines in an intensively cultivated landscape

Fischer¹,

Weber²

2003

Revue Suisse De Zoologie.

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Distribution of badger setts and latrines in an intensively cultivated landscape. -We made a survey of badger Mêles meles setts and latrines in a Swiss agricultural area where food resources are over-abundant and suitable den sites potentially rare. Indeed, badger main sett density was the lower ever recorded (0.07/km 2 ). Setts were located in small remaining woodlands or in the forested slopes surrounding the cultivated area. We discovered 67 latrines, which could be differentiated into two categories: 1) major latrines used for more than 4 months, 2) minor latrines used for only 1 to 4 months. Major latrines, which are generally considered as territorial marks, were located closer to the main setts than the minor ones. This distribution suggests that badger territorial boundaries are not well defined in this cultivated area.

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Le blaireau (Meles meles L.) dans le Jura suisse: succès de capture, paramètres démographiques et ectoparasites

Cited by 10 publications

References 27 publications

Circadian activity patterns and nocturnal resting sites of Eurasian badgers (Meles meles L.) in a rural area of western Switzerland

Circadian activity patterns and nocturnal resting sites of Eurasian badgers (Meles meles L.) in a rural area of western Switzerland

Breaking down population density into different components to better understand its spatial variation

Distribution of badger setts and latrines in an intensively cultivated landscape

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