Guillaume Péron
University of Lyon
Publications 52
Kernel density estimation (KDE) is a major tool in the movement ecologist toolbox that is used to delineate where geo-tracked animals spend their time. Because KDE bandwidth optimizers are sensitive to temporal autocorrelation, statistically-robust alternatives have been advocated, first, data-thinning procedures, and more recently, autocorrelated kernel density estimation (AKDE). These yield asymptotically consistent, but very smoothed distributions, which may feature biologically unrealistic a...
2 CitationsSource
1 CitationsSource
Abstract To facilitate the use of population counts as an index of population change, we describe a generalization of the distance sampling methodology to analyze, in addition to distance to the observer, two other ways to estimate imperfect detection probability: multiple observers and time-to-detection, in a flexible manner, meaning that not all sites or years need to have distance information or be surveyed in the same way every year. We also account for the effect of partially-observed indiv...
#1Guillaume Péron (Lyon College)H-Index: 14
#2Christophe Bonenfant (Lyon College)H-Index: 1
Last.Cheryl Tinashe MabikaH-Index: 1
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The two Buphagus oxpecker species are specialized passerines that forage for ticks and other food particles on the body of ungulates in the African savannahs. One of their intriguing features is th...
#1Guillaume Péron (University of Lyon)H-Index: 14
#2Jean-François Lemaître (University of Lyon)H-Index: 17
Last.Jean-Michel Gaillard (University of Lyon)H-Index: 70
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The concept of actuarial senescence (defined here as the increase in mortality hazards with age) is often confounded with life span duration, which obscures the relative role of age-dependent and age-independent processes in shaping the variation in life span. We use the opportunity afforded by the Species360 database, a collection of individual life span records in captivity, to analyze age-specific mortality patterns in relation to variation in life span. We report evidence of actuarial senesc...
#1Guillaume Péron (Lyon College)H-Index: 14
#2Justin M. Calabrese (UMD: University of Maryland, College Park)H-Index: 21
Last.Emily L. C. Shepard (Swansea University)H-Index: 23
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Abstract Background Global positioning systems (GPS) and altimeters are increasingly used to monitor vertical space use by aerial species, a key aspect of their niche that we need to know to understand their ecology and conservation needs, and to manage our own use of the airspace. However, there are various sources of error in flight height data (“height” above ground, as opposed to “altitude” above a reference like the sea level): vertical error from the devices themselves, error in the ground...
#1Guillaume Péron (Lyon College)H-Index: 14
#2Christophe Bonenfant (Lyon College)H-Index: 1
Last.Jean-Michel Gaillard (Lyon College)H-Index: 70
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1 CitationsSource
#1Olivier Duriez (University of Montpellier)H-Index: 18
#2Guillaume Péron (CNRS: Centre national de la recherche scientifique)H-Index: 14
Last.Flavio Monti (UNISI: University of Siena)H-Index: 1
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Most large raptors on migration avoid crossing the sea because of the lack of atmospheric convection over temperate seas. The osprey Pandion haliaetus is an exception among raptors, since it can fl...
4 CitationsSource
#1Pierrick Blanchard (University of Toulouse)H-Index: 16
#2Christine Lauzeral (University of Toulouse)H-Index: 3
Last.Dominique Pontier (University of Lyon)H-Index: 47
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Our picture of behavioral management of risk by prey remains fragmentary. This partly stems from a lack of studies jointly analyzing different behavioral responses developed by prey, such as habitat use and fine-scale behavior, although they are expected to complement each other. We took advantage of a simple system on the Kerguelen archipelago, made of a prey species, European rabbit Oryctolagus cuniculus, a predator, feral cat Felis catus, and a mosaic of closed and open foraging patches, allo...
1 CitationsSource
#1Olivier DuriezH-Index: 18
#2Guillaume PéronH-Index: 14
Last.Flavio MontiH-Index: 5
view all 5 authors...
Most large raptors on migration avoid crossing the sea because of the lack of atmospheric convection over temperate seas. The osprey Pandion haliaetus is an exception among raptors, since it can fly over several hundred kilometres of open water. We equipped five juvenile ospreys with GPS-Accelerometer-Magnetometer loggers. All birds were able to find and use thermal uplift while crossing the Mediterranean Sea, on average 7.5 times per 100 km, and could reach altitudes of 900 m above the sea surf...