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The state-space modeling of partially observed dynamical systems generally requires estimates of unknown parameters. The dynamic state vector together with the static parameter vector can be considered as an augmented state vector. Classical filtering methods, such as the extended Kalman filter and the bootstrap particle filter, fail to estimate the… (More)

- Olivier GIMENEZ, Vivien ROSSI, +5 authors Roger PRADEL
- 2007

21 State-space models have recently been proposed as a convenient and flexible 22 framework for specifying stochastic models for the dynamics of wild animal pop23 ulations. Here we focus on the modelling of data on marked individuals which 24 is frequently used in order to estimate demographic parameters while accounting 1 for imperfect detectability. We… (More)

In this paper a new generation of particle filters for nonlinear discrete time processes is proposed, based on convolution kernel probability density estimation. The main advantage of this approach is to be free of the limitations encountered by the current particle filters when the likelihood of the observation variable is analytically unknown or when the… (More)

- Bruno Hérault, Bénédicte Bachelot, +6 authors Christopher Baraloto
- 2011

Bruno Hérault*, Bénédicte Bachelot, Lourens Poorter, Vivien Rossi, Frans Bongers, Jérôme Chave, C. E. Timothy Paine, Fabien Wagner and Christopher Baraloto Université des Antilles et de la Guyane, UMR ‘‘Ecologie des Forêts de Guyane’’, 97387 Kourou Cedex, France; AgroParisTech, UMR ‘‘Ecologie des Forêts de Guyane’’, 97387 Kourou Cedex, France; Forest… (More)

- Holger Wernsdörfer, Henri Caron, +4 authors Sylvie Gourlet-Fleury
- Conservation Genetics
- 2009

Determining how tropical tree populations subject to selective felling (logging) pressure may be conserved is a crucial issue for forest management and studying this issue requires a comprehensive understanding of the relationships between population demography and gene flow. We used a simulation model, SELVA, to study (1) the relative impact of demographic… (More)

1. Reliable above-ground biomass (AGB) estimates are required for studies of carbon fluxes and stocks. However, there is a huge lack of knowledge concerning the precision of AGB estimates and the sources of this uncertainty. At the tree level, the tree height is predicted using the tree diameter at breast height (DBH) and a height sub-model. The… (More)

- Fabien Wagner, Vivien Rossi, Clément Stahl, Damien Bonal, Bruno Hérault
- PloS one
- 2012

• Climate models for the coming century predict rainfall reduction in the Amazonian region, including change in water availability for tropical rainforests. Here, we test the extent to which climate variables related to water regime, temperature and irradiance shape the growth trajectories of neotropical trees. • We developed a diameter growth model… (More)

- Fabien Campillo, Rivo Rakotozafy, Vivien Rossi
- Mathematics and Computers in Simulation
- 2009

In many situations it is important to be able to propose N independent realizations of a given distribution law. We propose a strategy for making N parallel Monte Carlo Markov Chains (MCMC) interact in order to get an approximation of an independent N -sample of a given target law. In this method each individual chain proposes candidates for all other… (More)

- Fabien Wagner, Vivien Rossi, +6 authors Bruno Hérault
- PloS one
- 2014

Climate models predict a range of changes in tropical forest regions, including increased average temperatures, decreased total precipitation, reduced soil moisture and alterations in seasonal climate variations. These changes are directly related to the increase in anthropogenic greenhouse gas concentrations, primarily CO2. Assessing seasonal forest growth… (More)

- Eric Marcon, Ivan Scotti, Bruno Hérault, Vivien Rossi, Gabriel Lang
- PloS one
- 2014

Traditional measures of diversity, namely the number of species as well as Simpson's and Shannon's indices, are particular cases of Tsallis entropy. Entropy decomposition, i.e. decomposing gamma entropy into alpha and beta components, has been previously derived in the literature. We propose a generalization of the additive decomposition of Shannon entropy… (More)