J. F. COSSON results 13
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Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic accuracy of the records, as well as the metadata. Moreover, we now provide an R packag...
Frag SAD : A database of diversity and species abundance distributions from habitat fragmentsNARA Subscribed
Habitat destruction is the single greatest anthropogenic threat to biodiversity. Decades of research on this issue have led to the accumulation of hundreds of data sets comparing species assemblages in larger, intact, habitats to smaller, more fragmented, habitats. Despite this, little synthesis or consensus has been achieved, primarily because of non‐standardized sampling methodology and analyses of notoriously scale‐dependen...
Gene flow in natural populations may be strongly influenced by landscape features. The integration of landscape characteristics in population genetic studies may thus improve our understanding of population functioning. In this study, we investigated the population genetic structure and gene flow pattern for the common vole, Microtus arvalis , in a heterogeneous landscape characterised by strong spatial and temporal variation....
Density‐related changes in selection pattern for major histocompatibility complex genes in fluctuating populations of volesNARA Subscribed
Host–pathogen interactions are of particular interest in studies of the interplay between population dynamics and natural selection. The major histocompatibility complex (MHC) genes of demographically fluctuating species are highly suitable markers for such studies, because they are involved in initiating the immune response against pathogens and display a high level of adaptive genetic variation. We investigated whether two M...
An earlier study revealed the strong phylogeographical structure of the lesser white‐toothed shrew ( Crocidura suaveolens group) within the northern Palaearctic. Here, we aim to reconstruct the colonization history of Mediterranean islands and to clarify the biogeography and phylogeographical relationships of the poorly documented Middle East region with the northern Palaearctic. We performed analyses on 998‐bp‐long haplotypes...
Characterization of sperm motility in sea bass: the effect of heavy metals and physicochemical variables on sperm motilityNARA Subscribed
Computer assisted sperm analysis (CASA) was used to characterize the motility of sea bass Dicentrarchus labrax spermatozoa and to study the effect of several physicochemical variables and heavy metals on sperm swimming performance. Duration of sperm motility in sea bass was very short ( 2+ and Pb 2+ , did not affect sperm motility when the activating media contained up to 100 ppm of the metal salts. In contrast, Hg 2+ modified...
Migration and recovery of the genetic diversity during the increasing density phase in cyclic vole populationsNARA Subscribed
In cyclic populations, high genetic diversity is currently reported despite the periodic low numbers experienced by the populations during the low phases. Here, we report spatio‐temporal monitoring at a very fine scale of cyclic populations of the fossorial water vole ( Arvicola terrestris ) during the increasing density phase. This phase marks the transition from a patchy structure (demes) during low density to a continuous p...
Genetic structure is influenced by landscape features: empirical evidence from a roe deer populationNARA Subscribed
The delimitation of population units is of primary importance in population management and conservation biology. Moreover, when coupled with landscape data, the description of population genetic structure can provide valuable knowledge about the permeability of landscape features, which is often difficult to assess by direct methods (e.g. telemetry). In this study, we investigated the genetic structuring of a roe deer populati...
Genetic structure of the cyclic fossorial water vole ( Arvicola terrestris ): landscape and demographic influencesNARA Subscribed
Genetic structure can be strongly affected by landscape features and variation through time and space of demographic parameters such as population size and migration rate. The fossorial water vole ( Arvicola terrestris ) is a cyclic species characterized by large demographic fluctuations over short periods of time. The outbreaks do not occur everywhere at the same time but spread as a wave at a regional scale. This leads to a...
Landscape connectivity influences gene flow in a roe deer population inhabiting a fragmented landscape: an individual–based approachNARA Subscribed
Changes in agricultural practices and forest fragmentation can have a dramatic effect on landscape connectivity and the dispersal of animals, potentially reducing gene flow within populations. In this study, we assessed the influence of woodland connectivity on gene flow in a traditionally forest‐dwelling species — the European roe deer — in a fragmented landscape. From a sample of 648 roe deer spatially referenced within a st...
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