In an other hand, some species, initially "resistant" show a marked 

 sensibility to underground actual pollution and consequent ly, large populations 

 may decline or even die ( cf. Juncus maritimus Lam.). 



Finally, these processes, acting in simultaneous or successive manners, 

 will lead to varied recovery sequences, to transitory (?) stages characterized 

 by a spatial species redistribution which may be quite different from the origi- 

 nal pattern. 



MOTS-CLES: Retabli ssement, regeneration, restauration, successions secon- 



daire et primaire, pollution par les hydrocarbures, nettoiement, 

 vegetation de marais maritimes. 



KEY WORDS: Recovery, regeneration, restoration, secondary and primary 



succession^ hydrocarbons pollution, cleaning up, salt marsh 

 vegetation. 



330 



