Tarek Hattab
University of Picardie Jules Verne
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Tarek Hattab.
PLOS ONE | 2013
Tarek Hattab; Frida Ben Rais Lasram; Camille Albouy; Chérif Sammari; Mohamed Salah Romdhane; Philippe Cury; Fabien Leprieur; François Le Loc’h
Bottom trawl survey data are commonly used as a sampling technique to assess the spatial distribution of commercial species. However, this sampling technique does not always correctly detect a species even when it is present, and this can create significant limitations when fitting species distribution models. In this study, we aim to test the relevance of a mixed methodological approach that combines presence-only and presence-absence distribution models. We illustrate this approach using bottom trawl survey data to model the spatial distributions of 27 commercially targeted marine species. We use an environmentally- and geographically-weighted method to simulate pseudo-absence data. The species distributions are modelled using regression kriging, a technique that explicitly incorporates spatial dependence into predictions. Model outputs are then used to identify areas that met the conservation targets for the deployment of artificial anti-trawling reefs. To achieve this, we propose the use of a fuzzy logic framework that accounts for the uncertainty associated with different model predictions. For each species, the predictive accuracy of the model is classified as ‘high’. A better result is observed when a large number of occurrences are used to develop the model. The map resulting from the fuzzy overlay shows that three main areas have a high level of agreement with the conservation criteria. These results align with expert opinion, confirming the relevance of the proposed methodology in this study.
PLOS ONE | 2015
Frida Ben Rais Lasram; Tarek Hattab; Ghassen Halouani; Mohamed Salah Romdhane; François Le Loc'h
Spatial patterns of beta diversity are a major focus of ecology. They can be especially valuable in conservation planning. In this study, we used a generalized dissimilarity modeling approach to analyze and predict the spatial patterns of beta diversity for commercially exploited, demersal marine species assemblages along the Tunisian coasts. For this study, we used a presence/absence dataset which included information on 174 species (invertebrates and fishes) and 9 environmental variables. We first performed the modeling analyses and assessed beta diversity using the turnover component of the Jaccard’s dissimilarity index. We then performed nonmetric multidimensional scaling to map predicted beta diversity. To delineate the biogeographical regions, we used fuzzy cluster analysis. Finally, we also identified a set of indicator species which characterized the species assemblages in each identified biogeographical region. The predicted beta diversity map revealed two patterns: an inshore-offshore gradient and a south-north latitudinal gradient. Three biogeographical regions were identified and 14 indicator species. These results constitute a first contribution of the bioregionalisation of the Tunisian waters and highlight the issues associated with current fisheries management zones and conservation strategies. Results could be useful to follow an Ecosystem Based Management approach by proposing an objective spatial partitioning of the Tunisian waters. This partitioning could be used to prioritize the adjustment of the actual fisheries management entities, identify current data gaps, inform future scientific surveys and improve current MPA network.
PLOS ONE | 2017
Ahmed Ben Abdelkrim; Tarek Hattab; H. Fakhfakh; Mohamed Sadok Belkadhi; Faten Gorsane
Combining landscape ecology and genetics provides an excellent framework to appreciate pest population dynamics and dispersal. The genetic architectures of many species are always shaped by environmental constraints. Because little is known about the ecological and genetic traits of Tunisian whitefly populations, the main objective of this work is to highlight patterns of biodiversity, genetic structure and migration routes of this pest. We used nuclear microsatellite loci to analyze B. tabaci populations collected from various agricultural areas across the country and we determine their biotype status. Molecular data were subsequently interpreted in an ecological context supplied from a species distribution model to infer habitat suitability and hereafter the potential connection paths between sampling localities. An analysis of landscape resistance to B. tabaci genetic flow was thus applied to take into account habitat suitability, genetic relatedness and functional connectivity of habitats within a varied landscape matrix. We shed light on the occurrence of three geographically delineated genetic groups with high levels of genetic differentiation within each of them. Potential migration corridors of this pest were then established providing significant advances toward the understanding of genetic features and the dynamic dispersal of this pest. This study supports the hypothesis of a long-distance dispersal of B. tabaci followed by infrequent long-term isolations. The Inference of population sources and colonization routes is critical for the design and implementation of accurate management strategies against this pest.
Journal of Marine Systems | 2013
Tarek Hattab; Frida Ben Rais Lasram; Camille Albouy; Mohamed Salah Romdhane; Othman Jarboui; Ghassen Halouani; Philippe Cury; François Le Loc'h
Ecography | 2017
Jonathan Lenoir; Tarek Hattab; Guillaume Pierre
Frontiers in Plant Science | 2017
Raf Aerts; Michael Ewald; Manuel Nicolas; Jérôme Piat; Sandra Skowronek; Jonathan Lenoir; Tarek Hattab; Carol X. Garzon-Lopez; Hannes Feilhauer; Sebastian Schmidtlein; Duccio Rocchini; Guillaume Decocq; Ben Somers; Ruben Van De Kerchove; Karolien Denef; Olivier Honnay
Global Ecology and Biogeography | 2014
Tarek Hattab; Camille Albouy; Frida Ben Rais Lasram; Samuel Somot; François Le Loc'h; Fabien Leprieur
Biological Invasions | 2017
Sandra Skowronek; Michael Ewald; Maike Isermann; Ruben Van De Kerchove; Jonathan Lenoir; Raf Aerts; Jens Warrie; Tarek Hattab; Olivier Honnay; Sebastian Schmidtlein; Duccio Rocchini; Ben Somers; Hannes Feilhauer
Diversity and Distributions | 2017
Tarek Hattab; Carol X. Garzon-Lopez; Michael Ewald; Sandra Skowronek; Raf Aerts; Hélène Horen; Boris Brasseur; Emilie Gallet‐Moron; Fabien Spicher; Guillaume Decocq; Hannes Feilhauer; Olivier Honnay; Pieter Kempeneers; Sebastian Schmidtlein; Ben Somers; Ruben Van De Kerchove; Duccio Rocchini; Jonathan Lenoir
Journal of Biogeography | 2015
Tarek Hattab; Camille Albouy; Frida Ben Rais Lasram; François Le Loc'h; François Guilhaumon; Fabien Leprieur