A5006607270- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Census and Population Estimation
- Animal Ecology and Behavior Studies
- Fish Ecology and Management Studies
- Animal Behavior and Reproduction
- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Zoonotic diseases and public health
- Plant and animal studies
- Evolution and Genetic Dynamics
- Viral Infections and Vectors
- Vector-borne infectious diseases
- Bird parasitology and diseases
- Survey Sampling and Estimation Techniques
- Seed Germination and Physiology
- Genetic and phenotypic traits in livestock
- Mycobacterium research and diagnosis
- Rangeland Management and Livestock Ecology
- Mosquito-borne diseases and control
- Primate Behavior and Ecology
- Statistical Methods and Inference
- Insurance, Mortality, Demography, Risk Management
- Marine animal studies overview
- Cancer-related molecular mechanisms research
Centre d'Écologie Fonctionnelle et Évolutive
2014-2024
Université de Montpellier
2014-2024
Centre National de la Recherche Scientifique
2014-2024
École Pratique des Hautes Études
2014-2024
Institut de Recherche pour le Développement
2018-2024
Université Paris Sciences et Lettres
2024
Université Paul-Valéry Montpellier
2014-2023
Netherlands Institute of Ecology
2012
Mediterranean Institute for Advanced Studies
2008
Université de Rennes
2006
Abstract Assessing the quality of fit a statistical model to data is necessary step for conducting safe inference. We introduce R2ucare , an r package perform goodness‐of‐fit tests open single‐ and multi‐state capture–recapture models. also has various functions manipulate data. remind basics provide guidelines navigate towards testing demonstrate functionality through its application real
M-SURGE (along with its companion program U-CARE) has been written specifically to handle multistate capture-recapture models and alleviate their inherent difficulties (model specification, quality of convergence, flexibility parameterization, assessment fit). In domain, covers a broader range than general like MARK (White & Burnham, 1999), while being more user-friendly MS-SURVIV (Hines, 1994). Among the main features is wide class variety parameterizations: (1) conditional probability...
Abstract: Assessing conservation strategies requires reliable estimates of abundance. Because detecting all individuals is most often impossible in free‐ranging populations, estimation procedures have to account for a <1 detection probability. Capture–recapture methods allow biologists cope with this issue detectability. Nevertheless, capture–recapture models open populations are built on the assumption that share same probability, although heterogeneity among has led underestimating...
In conservation and evolutionary ecology, quantifying accounting for individual heterogeneity in vital rates of open populations is particular interest. Individual random effects have been used capture–recapture models, adopting a Bayesian framework with Markov chain Monte Carlo (MCMC) to carry out estimation inference. As an alternative, we show how numerical integration via the Gauss‐Hermite quadrature (GHQ) can be efficiently approximate model likelihood effects. We compare performance...
Summary In a rapidly changing world, understanding and predicting population change is central aim of applied ecologists, this involves studying the links between environmental variation vital rates (survival, fecundity, etc.). Demographic analysis modelling can be daunting for practicing here we provide an overview some most important issues methods. Collection demographic data should follow standardized protocols statistical power to detect with environment critically dependent on long...
Ongoing global changes apply drastic environmental forcing onto Arctic marine ecosystems, particularly through ocean warming, sea-ice shrinkage and enhanced pollution. To test impacts on arctic ecological functioning, we used a 12-year integrative study of little auks (Alle alle), the most abundant seabird in Atlantic Arctic. We monitored foraging ecology, reproduction, survival body condition breeding birds, tested linkages between these biological variables set parameters including...
Abstract Multistate capture‐recapture models are a powerful tool to address variety of biological questions concerning dispersal and/or individual variability in wild animal populations. However, biologically meaningful often over‐parameterized and consequently some parameters cannot be estimated separately. Identifying which quantities separately estimable is crucial for proper model selection based upon likelihood tests or information criteria the interpretation estimates obtained. We show...
Detecting senescence in wild populations and estimating its strength raise three challenges. First, the presence of individual heterogeneity survival probability, proportion high-survival individuals increases with age. This increase can mask a senescence-related decrease probability when is estimated at population level. To accommodate we use mixture model structure (discrete classes individuals). Second, study elude observers field, their detection rate be heterogeneous. account for...
Events happening in one season can affect life‐history traits at (the) subsequent season(s) by carry‐over effects. Wintering conditions are known to breeding success, but few studies have investigated effects on survival. The Eurasian oystercatcher Haematopus ostralegus is a coastal wader with sedentary populations temperate sites and migratory northern grounds of Europe. We pooled continental European ringing‐recovery datasets from 1975 2000 estimate winter summer survival rates migrant...
While large carnivores are recovering in Europe, assessing their distributions can help to predict and mitigate conflicts with human activities. Because they highly mobile, elusive live at very low density, modeling presents several challenges due 1) imperfect detectability, 2) dynamic ranges over time 3) monitoring scales consisting mainly of opportunistic data without a formal measure the sampling effort. Here, we focused on wolves Canis lupus that have been recolonizing France since early...
Abstract The heterogeneity of catchability (HC) among the individuals encountered during a capture–recapture study has long been regarded as liability. However, heterogeneous capture probabilities may reflect interesting but hidden features population, such social status. difficulty is to distinguish between this intrinsic and extrinsic induced by itself. So far, population ecologists have not able these two sources variation in because, presence data, they frequently used too simple...
Whether different sources of mortality are additive, compensatory, or depensatory is a key question in population biology. A way to test for additivity calculate the correlation between cause‐specific rates obtained from marked animals. However, existing methods estimate this raise several methodological issues. One difficulty existence an intrinsic bias parameter. Although can be formally expressed, it requires knowledge about natural survival without any competing source, which difficult...
The desire to predict the consequences of global environmental change has been driver towards more realistic models embracing variability and uncertainties inherent in ecology. Statistical ecology gelled over past decade as a discipline that moves away from describing patterns modelling ecological processes generate these patterns. Following fourth International Ecology Conference (1–4 July 2014) Montpellier, France, we analyse current trends statistical Important advances analysis...
The canalization hypothesis postulates that the rate at which trait variation generates in average individual fitness a population determines how buffered traits are against environmental and genetic factors. ranking of species on slow‐fast continuum – covariation among life‐history describing species‐specific life cycles along gradient going from long life, slow maturity, low annual reproductive output, to short fast high output strongly correlates with relative impact given amount adult...
Recent increases in emergent infectious diseases have raised concerns about the sustainability of some marine species. The complexity and expense studying systems often dictate that conservation management decisions are made without quantitative data on population-level impacts disease. Mark-recapture is a powerful, underutilized, tool for calculating disease population size structure, even absence etiological information. We applied logistic regression models to mark-recapture obtain...
Abstract Many animal taxa exhibit sex‐specific variation in ecological traits, such as foraging and distribution. These differences could result responses to change, but demographic effects are poorly understood. Here, we test for the demography of northern (NGP, Macronectes halli ) southern (SGP, M. giganteus giant petrels – strongly sexually size‐dimorphic birds that breed sympatrically at South Georgia, Atlantic Ocean. Both species feed sea or on carrion land, larger males (30% heavier)...
Urbanisation is a world-wide phenomenon converting natural habitats into new artificial ones. Environmental conditions associated with urbanisation represent great challenges for wildlife. Behaviour and stress tolerance are considered of major importance in the adaptation to novel urban numerous studies already reported behavioural response phenotypes urbanisation, often suggesting they represented adaptations, while rarely demonstrating it. The main goal this study was test adaptive nature...
Distance sampling is widely used to estimate the abundance or density of wildlife populations. Methods mortality rates have developed largely independently from distance sampling, despite conceptual similarities between estimation cumulative and population living animals. Conventional analyses rely on assumption that animals are distributed uniformly with respect transects thus require randomized placement during survey design. Because events rare, however, it often not possible obtain...
1. Despite a growing interest in wildlife disease ecology, there is surprising lack of knowledge about the exposure dynamics individual animals to naturally circulating infectious agents and impact such on host life-history traits. 2. The exploration these questions requires detailed longitudinal data that can be captured multiple times during their life but also being able account for several sources uncertainty, notably partial observation or recapture individuals at each sampling...