connectivity & dispersal

River networks are particular objects regarding the movements of animals. Owing to their hierarchical structure, caused by the successive branching of rivers, classical spatial models are not fully appropriate to approximate dispersal or other movements. In addition, semi-aquatic species with a terrestrial phase can disperse out of the network from one branch to the other using step over habitats.  The project aims at assessing the characteristics of dispersal and colonization in river networks, as well as the consequences for management of populations either of conservation interest or invasive. 


Related publications

  • Chaput-Bardy A., Alcala N., Secondi J., Vuilleumier S. 2017. Network analysis for species management in rivers networks: application to the loire river. Biological Conservation 210: 26-36
  • Fourcade Y., Chaput-Bardy A., Secondi J., Fleurant C., Lemaire C. 2013 Is local selection so widespread in river organisms? Fractal geometry of river networks leads to high bias in outlier detection. Molecular Ecology 22, 2065-2073.
  • Chaput-Bardy A., Gregoire A., Baguette M., Pagano A., Secondi J. 2010 Condition and phenotype-dependent dispersal in a damselfly, Calopteryx splendens. Plos One 5(5).
  • Chaput-Bardy A., Fleurant C., Lemaire C., Secondi J. 2009 Modelling the effect of in-stream and overland dispersal on gene flow in river networks. Ecological Modelling 220, 3589-3598.
  • Chaput-Bardy A., Lemaire C., Picard D., Secondi J. 2008 In-stream and overland dispersal across a river network influences gene flow in a freshwater insect, Calopteryx splendens. Molecular Ecology 17, 3496-3505.
  • Chaput-Bardy A., Pays O., Lode T., Secondi J. 2007 Morphological clines in dendritic landscapes. Freshwater Biology 52, 1677-1688.