A5051636855- Avian ecology and behavior
- Wildlife Ecology and Conservation
- Animal Behavior and Reproduction
- Fish Ecology and Management Studies
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- French Urban and Social Studies
- Environmental Conservation and Management
- Economic and Environmental Valuation
- Mediterranean and Iberian flora and fauna
- Agriculture and Rural Development Research
- Bird parasitology and diseases
- Turtle Biology and Conservation
- Fish Biology and Ecology Studies
- Plant and animal studies
- Amphibian and Reptile Biology
- Genetic and phenotypic traits in livestock
- Environmental Philosophy and Ethics
- Rangeland and Wildlife Management
- Heavy metals in environment
- Land Use and Ecosystem Services
- Mercury impact and mitigation studies
- Marine and fisheries research
- Marine animal studies overview
- Animal Ecology and Behavior Studies
Tour du Valat
2015-2024
Université du Québec à Montréal
2000-2010
Centre Hospitalier Métropole Savoie
2008
Centre d'Écologie Fonctionnelle et Évolutive
1998-2000
Centre National de la Recherche Scientifique
1998-2000
Abstract The North American greater snow goose population has increased dramatically during the last 40 years. We evaluated whether refuge creation, changes in land use on wintering and staging grounds, climate warming have contributed to this expansion by affecting distribution, habitat use, body condition, migration phenology of birds. also reviewed effects increasing marshes along migratory routes tundra summer. Refuges established before 1970 may initial demographic increase. most...
Summary For many species, human‐induced disturbances can severely influence an individual's pay‐off; however, energy‐cost variations from different disturbance types have rarely been reported. We evaluated the dynamic behavioural responses of staging greater snow geese Anser caerulescens atlanticus to in southern Quebec, Canada, between 1997 and 2000. specifically considered impact a unique measure, spring conservation hunt implemented agricultural habitats 1999. tracked 237 radio‐tagged...
Summary Human‐induced disturbance such as hunting may influence the migratory behaviour of long‐distance migrants. In 1999 and 2000 a spring hunt greater snow geese Anser caerulescens atlanticus occurred for first time in North America since 1916, aimed at stopping population growth to protect natural habitats. We evaluated impact this on staging movements along 600‐km stretch St Lawrence River southern Quebec, Canada. tracked radio‐tagged female three contiguous regions area from south‐west...
Summary 1. The balance between costs and benefits of migration under different environmental, density‐dependent individual conditions may promote a broad range migratory behaviours. We studied the factors influencing first‐year subsequent fidelity or dispersal among wintering areas, survival behaviours in greater flamingo ( Phoenicopterus roseus ). 2. analysed by multievent capture–recapture modelling among‐site dispersal/fidelity site‐dependent probabilities from 22 671 flamingos ringed...
Capsule Counts with precision comparable to those of an expert observer can be achieved automatically. Aims To develop open-source freeware program that automatically extracts and counts the number birds in aerial images dense aggregations. Methods Software was developed validated using photographs Greater Flamingo colonies from France, Turkey Mauritania. We used a stochastic approach based on object processes. The objects representing flamingos were defined as ellipses, software detected...
High dispersal rates are known to homogenize host's population genetic structure in panmictic species and disrupt host local adaptation the environment. Long-distance might also spread micro-organisms across large geographical areas. However, so far, which extent selection mechanisms that shape genetics mirrored of enteric microbiome remains unclear. horizontal parental transfer may bacterial communities between breeding sites (homogeneous hypothesis). Alternatively, strong from environment...
Understanding the trade-off between current reproductive effort, future survival and breeding attempts is crucial for demographic analyses life history studies. We investigated this in a population of king penguins (Aptenodytes patagonicus) marked individually with transponders using multistate capture-recapture models. This colonial seabird species has low annual proportion non-breeders (13%), despite cycle which lasts over 1 year. To draw inferences about consequences non-breeding, we...
Abstract This article documents the addition of 411 microsatellite marker loci and 15 pairs Single Nucleotide Polymorphism (SNP) sequencing primers to Molecular Ecology Resources Database. Loci were developed for following species: Acanthopagrus schlegeli, Anopheles lesteri, Aspergillus clavatus, flavus, fumigatus, oryzae, terreus, Branchiostoma japonicum, belcheri, Colias behrii, Coryphopterus personatus, Cynogolssus semilaevis, Cynoglossus Dendrobium officinale, Dysoxylum malabaricum,...
The conservation of biodiversity poses an exceptionally difficult problem in that it needs to be effective a context double uncertainty: scientific (i.e., how conserve biodiversity) and normative which why). Although adaptive management offers promising approach overcome uncertainty, uncertainty is seldom tackled by science. We expanded on the proposed adaptive-management theorists devising integrative iterative encompasses both types uncertainty. Inspired environmental pragmatism, we...
ABSTRACT Only a few studies have shown positive impacts of ecological compensation on species dynamics affected by human activities. We argue that this is due to inappropriate methods used forecast required in environmental impact assessments. These assessments are mostly descriptive and only valid at limited spatial temporal scales. However, habitat suitability models developed predict the changes potential species' distributions should provide rigorous science‐based tools for planning....
Abstract Environmental trace element composition can have an important impact on ecosystem and population health as well individual fitness. Therefore, carefully assessing bioaccumulation of elements is central to studies investigating the ecological pollution. Colonial birds are bioindicators since non‐invasive sampling easily be achieved through chick feathers, which controls for some confounding factors variability (age environmental heterogeneity). However, additional factor, external...
Summary 1. Although the influence of water availability and precipitation regimes on amphibians has been studied at large scales, whether how interannual rainfall hydrological variations affect dynamics a local scale have rarely addressed. In this respect, accounting for in species detectability space time also overlooked. 2. We assessed effects breeding three amphibian taxa: Pelodytes punctatus , Hyla meridionalis Pelophylax spp. 20 ponds Camargue region (southern France) over 7‐year study...
1. Contrary to the generally high level of natal philopatry (i.e. likelihood that individuals breed at their colony) found in first-breeding colonial birds, little is known later life. Most hypotheses advanced explain are valid all ages. However, for young and inexperienced benefits may be counterbalanced by costs intraspecific competition colony making dispersal temporarily advantageous. In turn, experience increase competitive ability make advantageous again. 2. We evaluated this...
A spring conservation hunt (15 Apr-31 May) to control the exponential population growth of greater snow geese (Chen caerulescens atlantica) was introduced in 1999 during their staging southern Quebec, Canada. We tested hypothesis that disturbance by hunting negatively affected nutrient storage spring. compared amount fat and protein stored (1999 2000) similar data obtained sporadically between 1979 1998 (no hunt). collected adult females at 3 sites along St. Lawrence River years with (n =...
Predicting how bird populations may respond to climate change is a major challenge which could be addressed by understanding past environmental processes have driven the variations of breeding population size and productivity. In inhabited regions, this issue complicated interference associated with heterogeneous levels habitat management. Here, we explored several hydrological variables influenced Greater Flamingo Phoenicopterus roseus in Camargue (Rhone delta, southern France) over 28‐year...
The conservation of many species depends on sustainable economic activities that shape their habitats. use these anthropogenic habitats may change quickly owing to world trade globalization, market reorientations, price volatility or shifts in subsidy policies. recent financial crisis has produced a global impact the economy. How this have affected beneficial biodiversity not yet been documented. However, consequences could be particularly acute for sensitive climate change, jeopardizing...
The greater flamingo Phoenicopterus roseus is a long‐lived colonial waterbird species, characterized by large range encompassing three continents, very limited number of breeding sites, and high dispersal abilities. We investigated both the phylogeographic history contemporary extent genetic differentiation between eight different Mediterranean colonies flamingos sampled 1995 2009, using mitochondrial DNA microsatellite markers. found no significant differences in allelic richness or private...
Most studies analyzing the effects of global warming on wild populations focus gradual temperature changes, yet it is also important to understand impact extreme climatic events. Here we studied effect two cold spells (January 1985 and February 2012) energetics greater flamingos (Phoenicopterus roseus) in Camargue (southern France). To cause observed flamingo mass mortalities, first assessed energy stores found dead 2012, compared them with those other bird species exposed and/or fasting....
Abstract The long-lived greater flamingo ( Phoenicopterus roseus ) is famous for performing conspicuous group displays during which adults try to acquire a new mate each year with varying success. We examined variation in the sexual display complexity (SDC) of wild flamingos aged between 4 and 37 yrs. SDC was defined as product richness (the number different movements) versatility transitions within 5 min behavioral sequence. In both sexes, date pairing season had linear positive effect on...
It is now well admitted by ecologists that the conservation of biodiversity should imply preserving evolutionary processes will permit its adaptation to ongoing and future environmental changes. This attested ever-growing reference
The filtering of gut microbial datasets to retain high prevalence taxa is often performed identify a common core microbiome that may be important for host biological functions. However, thresholds used are highly variable, and it remains unclear how they affect diversity estimates whether insights stemming from microbiomes comparable across studies. We hypothesized if macroecological patterns in abundance similar species, then we would expect increasing yield changes alpha beta dissimilarity...
Abstract Following several decades of unsuccessful attempts at locating breeding colonies the Greater Flamingo Phoenicopterus roseus in Algeria, was recorded on a natural islet Garaet Ezzemoul, seasonal salt lake near town Aïn M'lila Hauts Plateaux. This successful mass event by least 5 379 pairs followed two failed due to human disturbance same site during preceding years. Egg-laying started relatively late (mid-May) with precocious nesting middle and higher nest density. Estimated success...